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Since we are living in a digital age where each of us is surrounded by competing technologies you must have heard about Android. Android is a mobile operating system primarily designed for touchscreen mobile devices like smartphones. Developed by Google, it is a modified version of  Linux kernel and other open-source software. 

Why is Mobile Security Important

Today nearly every task we perform is carried out by our mobile devices. Not only our personal but even work-related professional tasks are being done using mobile devices. Therefore, protecting our smartphones are the most important things for each of the users. Since it carries all our important codes and documents today there are hundreds of malware activities are being performed. With the increasing trends and technologies cybercrime too has increased steadily. 

Android is the most used and available platform used by the majority of the public. Due to its widespread usage and open-source properties, it is the most targeted platform to hack or destroy. Therefore, the need to secure the Android app development is highly large and required, not only for large enterprises but for small and medium as well. 

Let’s take a look at some security issues developer’s face to develop completely secured Android Apps – 

Data Store 

Android having many security concerns face the common issue about storage, whether the data saved on the device is accessible to other apps or not. It has three common fundamental ways of storing data – Internal storage, External storage, and Content providers. 

Internal Storage

In Android, the files you create on internal storage are accessible only to your app. Generally, developers avoid readability and writ ability mode for IPC files because neither do they provide the ability to limit its data access nor do they provide any control of the data format. Therefore, if you want to share your data with other app processes consider using a content provider. It offers you both reading and the writing permissions to other apps. 

However, to provide additional protection for sensitive data you can encrypt local files using the key which is not accessible to the application. 

Use External Storage

Files created on external storage like SD cards are globally readable and writeable. Since external storage can be removed by the user and can also be modified by application therefore never use sensitive information using external storage. 

You should perform input validation while handling the data from external storage. Also, you should not store executables or class files on external storage prior to the dynamic loading. And if your app retrieves executable files from external storage it should be first signed and cryptographically verified before dynamic loading.

Read More: How Profitable are Android Apps to the Developer and Your Business?

Content Providers

Content providers offer a structured storage mechanism which can be limited to your application or can also be exported to allow access by other applications. However, if you do not want to provide other applications access, being a developer you can make the changes. 

You can also create single permissions specifying particular permissions for reading and writing. You should limit your permissions to those who are required to accomplish the task. It is also easier to add permissions later than to expose new functionality rather than taking it away and impacting users. Android app development provides its developers with various options to design their applications. 

Data Encryption

Encryption is a process by which the developer can convert the data transmitting into a form by which it cannot be read by anyone else without decryption. Therefore, in this case, if the data gets stolen the hackers would not be able to use it for their purposes. This is an efficient and important way to save the data even after getting stolen. Using this the hackers would not be able to use your data in malicious ways.

Therefore, if you’re building an app, make sure the data you are including in the app is very well encrypted. 

Unintended Data Leakage

Unintended Data Leakage refers to the storage of critical app data on the insecure locations of the mobile phone. Since this data is stored on the unsecured location it can be accessible by other apps or users anytime. This leads to the breach of user privacy leading to the unauthorized use of data. 

It is caused due to issues like bugs and negligence of security in the framework which is not in the control of the developer. However, you can prevent unintended data leakages by monitoring the common points like charging, logging, app backgrounding, cookie objects, etc. 

Libraries

While designing the app developers need the requirement of third-party libraries for code building. Therefore, make sure you use a secured third party library and not just trust any library for your app-building. Try to find the best library to test your code. Otherwise, the hackers can easily attack and crash your system using malicious code. 

Know More:  How Android app development has revolutionized the world?

Authorization and Authentication

While building the code of your app make sure you use authorized APIs. Poor or missing authentication allows hackers to anonymously operate the mobile app or backend server of mobile apps. Mobile internet connections are not as reliable as traditional web connections. Therefore, to keep your data secure and application-optimized you need to maintain offline optimization. This offline requirement of authentication helps you create the security loopholes which developers must consider while implementing mobile authentication. 

In offline mode apps are mostly unable to distinguish between users and therefore allows users with low permissions to execute the actions which are only allowed to the admins or super admins. To prevent sensitive information it is best to limit login in the online mode. However, if there comes a specific requirement for offline authentication you can encrypt the app data which can be opened only with specific operations. 

Conclusions

These are some best practices a mobile app developer can follow to have a fully secure application. Ensuring security importance a developer can easily control cyber crimes to a lot of extents. 

If you’re looking for an Android developer to design Android mobile application for your business, contact us. We at Nimap Infotech have all kinds of developers present to handle your queries. Hire Android developers to design the best-secured app for your company. Our developers also provide lessons for those who are keen to learn the coding and seeing their future in development. Therefore, if you want to begin your career into development join the best android development course in Mumbai. 

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In this article, we are going to cover the 5 essential steps that are involved in developing an Android app for the Google Android platform.

Let’s discuss the important steps in creating your very own Android App.

Step 1) Ideation

It often happens that we shortlist the ideas that we consider important and amazing. Even though these ideas seem to be amazing and brilliant, they may not necessarily fill a gap or even look to address a pain point. An idea can only be viewed in the form of a mobile application if it is able to solve a genuine problem of the target audience who are going to use this application to make their lives easier. Therefore, the idea used for the app has to be convenient and feasible and this can be determined by performing market research, and doing a competitor analysis and establishing well documented and defined goals and objectives that the app is set out to achieve.

A very vital part of the entire mobile application development process is going to be a thorough understanding of both the Apple App Store and Google Play Store. This is because they both offer a gold mine as far as market research is concerned. Once you have filtered down your idea and specifically outlined the target audience for your app, you can go through similar apps that provide the features, see the number of reviews, and so on. Doing this will not only boost your market research but also give you a thorough understanding of the competition. After using these apps you can analyze what’s missing in them and what will make your app stand out from the competition. You will also gain an edge over your competitors after doing this.

After determining the feasibility of your idea, the next step to accomplish is to create a timeline and the specific goals that you can set out to achieve against your milestones. Your objectives or tasks will include sorting out the budget and the scope, coming up with a universal selling point, establishing the specific features that your app requires, figuring out the recent trends of machine learning and AR/VR that can be used for the app as well as its promotions and so on.
This can be a lot clearer when you set out to develop your app in the next step.

Step 2) Designing

Now that you have identified your target group, your features, your budget, as well as your timeline is figured out, it’s time to start working on the conceptualization and visualization of the basic functionality that the app provides and its user interface. There are various ways to go about the designing phase of the mobile app development process

Storyboarding may usually involve actually chalking out the user’s journey as they navigate through the user interface as well as explore different features. Here are some things that you need to remember while you are storyboarding are:

Visualize and conceptualize every layout and design of the user interface, and placing every element including banners, text boxes, buttons as well as the icons in the right place.

It is always good to have a UI as long as you are ensuring that the users expectations are not compromised
The screens of your app should clearly align with the primary objective, your user should not feel lost while using the app.
Feel free to experiment with the layout of the screen, see if changing the size of a button or the placement of the icon can aesthetically make the user interface better.

Once you are done with finalizing the look and feel of the app the next step is to get down with the technicalities. You need to figure out what APIs do you need, whether you need push notification services, what kind of analytics tools and user engagement platforms, the databases that you will require and so on. You will also be able to determine whether you need to build the app from scratch or you can use an existing app’s architecture in order to base your app on.

The final stage of designing is the prototyping phase. This phase allows you to check whether your app is living up to the expectations from the functionalities and is also getting tested by the various stakeholders that are involved in the mobile app development process. You can use multiple tools including Marvel and InVision to build a high fidelity prototype that you can get it tested for glitches and flaws in the UI/UX. Even though the prototype is a barely minimum product, it is important that you build it with the utmost care, because the prototype will be the foundation on which the developers will build your app.

Know more: How Profitable are Android Apps to the Developer and Your Business?

Step 3) Development

While a lot of developers prefer to build the app from the ground up by themselves, there are many mobile app development platforms like GoodBarber and Shotgate that can be used to build a fully functional prototype, in order to begin with. This is the point where you start setting up a developer account on the app stores and when you plan on releasing the app. However, even before that happens the mobile app development consists of multiple phases as follows:

The Alpha Phase: This is the phase where the core functionality of the app is developed but it is not tested. At this phase, the app has a lot of bugs and glitches that need fixing.

The Beta Phase: This phase involves implementing all the major features and functionalities of the app, and the app is made to go through a round of light testing. Even though most of the bugs are fixed, a few remains. After this stage, the app can be released to a select number of users for testing and evaluation purposes.

The Release Phase: This is the final phase that comes after every bug is identified and fixed. This occurs after several rounds of testing the app can be released to the audience.

Step 4) Testing

No matter how seamless your mobile application is, that appears to you. You can never have enough rounds of testing in order to ensure that it fails proof and ready for any user. Mobile app software testing is something that you do during the development stage because it can be expensive to fix glitches and bugs later on when you are too deep in the development phase.
This is the phase where you thoroughly test the application and make sure that it conforms to the specifications that you initially set out to achieve.

You may like to know more: How Android app development has revolutionized the world?

Step 5) Launch

Once you have made sure that your app is ready for the main launch event, your next step is to launch the app on the respective app stores.

Conclusion

It is true and overwhelming that the app development process can be exhausting. It requires a heavy investment financially, as well as much amount of time, and resources are invested in. But, if you have done it right, from the start of identifying the need gap to consistently ensuring quality performance after the launch, then it is indeed a very rewarding process. A mobile app performance testing would be good way of testing the app while revealing any bugs during development.

If you’re looking to hire an Android developer for your business contact us. We at Nimap Infotech have experienced team of Android developers. Hire Android developers to receive the best Android app development solutions. For any query get in touch with us.

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There has recently been a boom in the development of mobile technologies. Over the years there has been emerged 3 different technologies that comprise of the dominant market for mobile phones. These are the Android Operating system from Google, The iOS operating system from Apple and the Windows Mobile operating system from Microsoft. In this article, we are going to have a look at the increasingly popular Android operating system that has captured millions of hearts worldwide and has become the No 1 Choice of the operating system for handset manufacturers. 

Recommended Reading:

Android Q: Everything You Need To Know

Android has become increasingly popular for the mobile market these days. Statistics prove that Android has captured 80% of the market share in the previous years. And this mobile operating system is going to continue to be popular these days. The reasons for the popularity are its open-source nature and usage in mid-range priced smartphones. These phones have become popular among the masses and its usage is increasing day by day.

Any company that wants to market or sell their products and services needs to develop an app on the Android platform. This is because most of the users prefer to use their mobile phones for performing their day to day activities. Nowadays there have been developed an app for the slightest functionality, Because it is easy to develop and market an app for the android platform it becomes essential for organizations to follow this trend to leverage and capture their target audience as well as market their products and services.

Google introduced the Android operating system on September 23, 2008. And has become the go-to operating system for many handset manufacturers. This is because it is easy to implement the android functionality and manufacturers can easily use the source code to customize and provide their own functionality over the Android operating system. What’s more, is there is an app for any kind of functionality, You do not need to pay Google for using the android operating system. The handsets that use the Android operating system drives the technology behind it. Google Does not restrict the usage of their operating system to their own handset manufacturers such as the Google Pixel Devices or the older Nexus Phones, unlike Apple. Hence this is the main reason why Android’s popularity is increasing day by day. There has been a boom in the development of Android apps in the past years compared to any other mobile platform such as iOS from Apple or Windows Mobile from Microsoft. Android has emerged as the most popular operating system for mobile devices because of its easy to use and free to access nature.

Do You Know:

4 Ways Hiring Android Developers Offshore Increase Productivity

There have been many Android developers in the market. If you or your organization wants to implement and use a certain idea or functionality then you can hire an Android developer very easily. The rates of development of Android apps also have been very cheap and affordable for organizations.

Developing an Android app has many listed advantages that are listed below:

• You can market your app to millions of consumers and have access to over 80% mobile users
• You can take advantage of the native features and performance offered by the Android Operating System.
• You can hire developers for cheap for developing your idea into an Android app of your choice
• You don’t need to spend extra for developing or having access to the developmental features as compared to other mobile platforms
• You don’t have upfront costs other than the development costs. That is there are no other hidden costs associated with developing Android apps.
• Any newbie or beginner can easily learn how to develop an Android app. There is nothing to pay in order to learn how to develop an app for Android mobile phones.
• Android applications have a plethora of features that any developer can take advantage of for developing their mobile apps.
• Handset manufacturers do not need to shell out extra money or pay anything for the usage of the Android platform
• New developers can take advantage of the well established, dominant and helpful community for solving any programming queries to implement certain custom functionality.

These are some of the advantages that make Android the GO-TO operating system for mobile handset manufacturers.

Conclusion: We have seen the advantages of what makes the Android operating system so popular among the masses of handset manufacturers. We have also seen why android emerged as the most popular operating system for many manufacturers. If you’re looking to hire android developers for any kind of development work for your upcoming mobile app project, then do give us a call or contact us. We have expert back end programmers and developers who are ready to onboard for your app development project. 

If you’re looking to get yourself trained for a full-fledged iOS app development course, then contact us We have expert trainers to help you with your mobile app development journey. You want to learn iOS app development or android app development it’s your choice. Looking for android app development course for beginners, well your search ends here. We have world-class trainers available to guide you for the Android course in Mumbai. We have the best iOS training company faculty ready to guide you in your endeavors. Learn from the best experts in the industry. Contact us now.  

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There is the new kid on the block, the newest Android version has entered the public beta mode, It comes with a smarter AI, more privacy and a new dark mode

Google recently unveiled its newest Android platform update, the next version of the Android operating system, Android 10 Q at its IO developer conference. Google introduced a whole new range of new features such as AI advances, gestures and Privacy advances.

Google has not yet named the new update but it marks a new shift in the way how things should function in a smartphone.

When can I get it?

Google has released the third Public beta of Android Q this month and if you own a Google Pixel phone, you can try it right now. Remember the development is still an on-going process so be prepared to not expect much stability on the new version. Be warned, not everything is complete and works perfectly.

Google has also worked with many third-party device manufacturers such as Huawei, OnePlus, LG, Xiaomi, Nokia, covering 21 devices in total.

When will it be released in final form?

Google has predicted that it will finish its development for Android Q in the third quarter of 2019, which means that it has some meantime until August. At this point, people who have Google Pixel Phones can update to the latest version, for other Phones, people will have to wait till their manufacturer releases an update for supporting their phones

What will it be called:

Up till now, Google has been using the names of sweets or desserts as the codename for the versions of Android, including KitKat, Lollipop, Marshmello, Nougat, and the recent one being Pie. What will be called for Android Q, quince may be!

How much it will cost?

The update will be free of cost. It is meant to be a free update. People having Google Pixel will update sooner. If someone asks money for the update, it is probably going to be a scam.

We have yet to see how many older devices get the Android Q update.

You may also like to read:

Top 5 Benefits of Hiring Android Developers Offshore

Gesture Navigation is Revamped:

Android Pie had introduced new features such as the new pill button, and a new swiping feature that had replaced the traditional back, home, and recently used the app, software keys. This feature was loved by all, and other manufacturers had decided to go their own route.

Android Q Beta 3 takes these features to the next level, they have embraced the back gesture that had been used by Huawei and Honor devices, swipe in from either the right or the left edge of the screen to go back: It works wonderfully.

Android Q also added an Apple-style gesture bar at the bottom of the display screen. Swipe up on it to go back to the home, hold on it to go to the recently used apps, or across it left or right to immediately go to the next or previous app in the recently used app stack.

You can also use the swipe up and over either right or left to immediately switch to the next app, this is a gesture used by OnePlus.

These gestures may change by the time Android Q has finished development, but it has been clear that the navigation buttons are out and the new gestures to control the functions are in.

Smart replies are now available for more apps:

Smart Replies have been available for a very limited number of apps that includes mainly Google Apps for a while that includes Gmail and Message. From Now on using Android Q, the number of apps will include this feature of smart replies straight from the notification shade, using on-device machine learning to predict what do you want to say using one tap feature.

The system will also identify which notifications do you want to answer and which ones can safely be ignored.

Recommended Reading:

How to develop an app for android?

A new Dark Mode:

Night or Dark modes are being used and loved by all. These modes offer to display a black background using white colored text on it. Because this mode consumes less power, it is known to save battery life. While other manufacturers have implemented their own versions, Google has lagged behind. With Android Q, a system-wide dark theme has been implemented, which can be enabled all the time or just at night.

If you like dark colored themes then this is for you. Your phone’s battery may thank you if you’re using an OLED screen, as the pixels that only light up consumes power, while the black color background, turns the pixels off.

Faster Updates While You’re Using Your Phone:

App updates can be annoying, and OS updates can be frustrating even more so. Google’s Project MainLine aims to aid software updates by taking direct responsibility for software updates and backend updates for Android, and delivering them via the Play Store instead of a full system update at it is now. Google says that this will speed up updates from third-party manufacturers and be less disruptive to users as the phone will not be needed to be rebooted to install them.

In the Meantime, the new in-App updates API will, in theory, allow the developers to update their apps while you’re using them, instead of having to quit the app, install the update, and resume where you left off.

Death of Android Beam:

Android Beam which is used to share Files, Photos and other phone data between smartphones is being killed off with Android Q, It’s possible that you may have never used it, but if you placed two phones back to back you can share files without using the Internet.

Improved Privacy:

Google has talked a lot about their privacy of user data at the Google IO. They are committed to making a series of changes to the Android System. To allow users to exhibit greater control on permissions, sensors and other bits.

The first feature to get improved is additional controls for things like location access, Following Apple’s footsteps, Android Q will limit location access to apps that are being used currently, never all the time.

Scoped storage will give controls to apps over which apps can access which files and other sensitive data. Apps shall be blocked for taking over the screen from the background. Sometimes malicious apps to steal your password or data. Access to more sensitive parts of the phone such as device identifiers will be limited too. While you will be able to disable your phone’s sensors if you’re not using them and access more apps in an incognito mode, which includes Google Maps and Browsers.

Finally, Google is taking great strides in making a stronger on-device AI, which includes voice understanding, this removes the need to transmit the voice to Google servers to interpret. This improves privacy and speeds up things tremendously.

Live Captions:

Live captions do what it says, provides in screen captioning capabilities to videos being watched, puts subtitles on audio and videos being watched in real-time. It does so using AI to transcribe the audio or video in real-time without using internet access. It also works with the things you record yourself.

Google designed the feature with the hard of hearing in mind, but given the number of people who watch videos with the sound muted, this feature can prove to be increasingly popular.

Parental Controls:

Google is heavily investing in parental controls on Android using its Family Link feature. This will now be built into the settings App on Android Q. Parents can now set up a new phone or a device for their child,  link it to their account as well as take control over the screen time limits and app installs, track their child’s usage as well as set things such as bedtime when the phone shuts off

280 Users rated 05/05, 300 people voted.

Live Data – Lifecycle Aware Component

• In 2017 Google introduced Lifecycle aware jetpack library. This library handles the memory leaks and solving common android lifecycle challenges like screen orientation, activity destroyed.
• In Android, views (Activity, Fragments, etc) can be destroyed at any time, so reference to these may lead to a memory leak or results in NullPointerException.
• In the same way LiveData is designed to communicate between the UI(Usually View Model as its a lifecycle aware component) and View Controller (Activity, Fragment) With LiveData, this communication is SAFE as the data will only be received when the View is Active.

What is LiveData?

• Similarly, Observable Data Holder => which means it observes the data and if any changes have been made or new data has been added the owner who holds this object will get notified.
• It is Lifecycle Aware => well aware about activity and fragment or you can say the owner or components lifecycle which holds this object. That means it will only notify UI which has active state of lifecycle.
• Usually works best with View Model class
• It is one of the components in Android Jetpack library.

NOTE: This document contains LiveData + RoomDatabase

Priority has been given to LiveData not to room db that much.

LiveData basic concepts have been covered

LiveData Setup

Live Data – Lifecycle Aware Component

Refer : https://codelabs.developers.google.com/codelabs/android-training-livedata-viewmodel/#0

Design Pattern to be followed – MVVM (MODEL – VIEW – VIEWMODEL)

Steps to Add Live Data Component

Add Dependencies in Gradle.

// Room components

implementation “android.arch.persistence.room:runtime:1.1.1”

annotationProcessor “android.arch.persistence.room:compiler:1.1.1”

androidTestImplementation “android.arch.persistence.room:testing:1.1.1”

// Lifecycle components

implementation “android.arch.lifecycle:extensions:1.1.1”

annotationProcessor “android.arch.lifecycle:compiler:1.1.1”

Setup the Room Database

Room Database – Another android jetpack library component , lifecycle aware

– Furthermore provides compile time verification for sql queries

– As your schema changes, you need to update the affected SQL queries manually in Sqlite. Room solves this problem.

– supports LiveData efficiently

Add a DataModel class which will define the schema of the database.

Room persistent library provide us annotation to define the database table schema

@Entity(tableName = “word_table”)  => Mention Database Name

public class WordModel {

   @PrimaryKey(autoGenerate = true) => Autogenerated primary key not null , specify column name

   @NonNull

   @ColumnInfo(name = “word_id”)

   private int id;

   @NonNull

   @ColumnInfo(name = “word_name”)

   private String word;

   public WordModel(String word)

   {

       this.word = word;

   }

   public int getId() {

       return id;

   }

   public String getWord() {

       return word;

   }

   public void setId(int id) {

       this.id = id;

   }

}

Add database DAO interface

– The DAO  be an interface or abstract class.

– Equally the room uses  DAO to create a new clean API for your code.

– By default, all queries (@Query) must be executed on a thread other than the main thread.

– For operations such as inserting or deleting, if you use the provided convenience annotations, Room takes care of thread management for you.

@Dao

public interface WordDAO {

   @Insert(onConflict = OnConflictStrategy.IGNORE)

   void insert(WordModel word);

   @Query(“DELETE FROM word_table”)

   void deleteAll();

   //ordering the words is not strictly necessary. However, by default, return order is not guaranteed, and ordering makes testing straightforward.

   @Query(“SELECT * from word_table ORDER BY word_name ASC”)

   LiveData<List<WordModel>> getAllWords();

}

Add RoomDatabase class

//Room is a database layer on top of an SQLite database.

// Room takes care of tasks that you used to handle with a database helper class such as SQLiteOpenHelper.

@Database(entities = {WordModel.class} , version = 1, exportSchema = false)

//set exportschema to false, export schema keeps a history of schema versions.

//For this practical, you can disable it, since you are not migrating the database

public abstract class WordRoomDatabase extends RoomDatabase {

   //Room uses the DAO to issue queries to its database.

   //By default, to avoid poor UI performance, Room doesn’t allow you to issue database queries on the main thread.

   //LiveData applies this rule by automatically running the query asynchronously on a background thread when needed.

   //Room provides compile-time checks of SQLite statements.

   //Room class must be abstract and extend RoomDatabase.

   //Usually, only need one instance of the Room database for the whole app.

   public abstract WordDAO wordDao();

   private static WordRoomDatabase INSTANCE;

   //Create the WordRoomDatabase as a singleton to prevent having multiple instances of the database opened at the same time.

   public static WordRoomDatabase getDatabase(final Context mContext)

   {

       if(INSTANCE == null)

       {

           synchronized (WordRoomDatabase.class)

           {

               if(INSTANCE == null)

               {

                   //Create database here

                   INSTANCE = Room.databaseBuilder(mContext.getApplicationContext() ,

                           WordRoomDatabase.class ,

                           “word_database”)

                           // Wipes and rebuilds instead of migrating

                           // if no Migration object.

                           // Migration is not part of this practical.

                           .fallbackToDestructiveMigration()

                           .addCallback(sRoomDatabaseCallback) //callback to delete and insert new records in db

                           .build();

               }

           }

       }

       return INSTANCE;

   }

   @NonNull

   @Override

   protected SupportSQLiteOpenHelper createOpenHelper(DatabaseConfiguration config) {

       return null;

   }

   @NonNull

   @Override

   protected InvalidationTracker createInvalidationTracker() {

       return null;

   }

   @Override

   public void clearAllTables() {

   }

   //To delete content and repopulate the database whenever the app restarted,

   // you create a RoomDatabase.Callback and override the onOpen() method.

   // you cannot do Room database operations on the UI thread,

   // onOpen() creates and executes an AsyncTask to add content to the database

   private static RoomDatabase.Callback sRoomDatabaseCallback =

           new RoomDatabase.Callback(){

               @Override

               public void onOpen (@NonNull SupportSQLiteDatabase db){

                   super.onOpen(db);

                   new PopulateDbAsync(INSTANCE).execute();

               }

           };

   private static class PopulateDbAsync extends AsyncTask<Void ,Void, Void> {

       private WordDAO mDao;

       String[] words = {“dolphin”, “crocodile”, “cobra”};

       public PopulateDbAsync(WordRoomDatabase db) {

           mDao = db.wordDao();

       }

       @Override

       protected Void doInBackground(Void… voids) {

           // Start an app with a clean database every time.

           // Not needed if you only populate the database

           // when it is first created

           Log.d(“Delete”,“::”+mDao.getAllWords());

           mDao.deleteAll();

           for (int i = 0; i <= words.length – 1; i++) {

               WordModel word = new WordModel(words[i]);

               mDao.insert(word);

               Log.d(“Insert”,“::”+word);

           }

           return null;

       }

   }

}

Add Repository

– Repository implements the logic for deciding whether to fetch data from a network or use results cached in the local database.

public class WordRepository {

   private WordDAO wordDao;

   private LiveData<List<WordModel>> mWordList;

   //to initialize the database and member variable

   public WordRepository(Application application)

   {

       WordRoomDatabase db = WordRoomDatabase.getDatabase(application);

       wordDao = db.wordDao();

       mWordList = wordDao.getAllWords();

   }

   //A wrapper method , returns the cached words as LiveData

   //Room executes all queries on seperate thread

   //Observed LiveData notified the observer when the data changes

   public LiveData<List<WordModel>> getAllWords()

   {

       return mWordList;

   }

   //Wrapper for insert

   //Use an asynctask to call insert , on non UI thread , or your app will crash

   public void insert(WordModel wordModel)

   {

       new InsertAsynkTask(wordDao).execute(wordModel);

   }

   private static class InsertAsynkTask extends AsyncTask<WordModel , Void, Void>

   {

       private WordDAO wordDao;

       InsertAsynkTask(WordDAO wordDAO)

       {

           this.wordDao = wordDAO;

       }

       @Override

       protected Void doInBackground(WordModel… wordModels) {

           for (WordModel word : wordModels)

           wordDao.insert(word);

           return null;

       }

   }

}

Add ViewModel class to handle the UI data across the configuration change

– provide data to UI and survive configuration changes acts as mediator between repository and UI

public class WordViewModel extends AndroidViewModel {

   //Never pass context into ViewModel instances.

   //Do not store Activity, Fragment, or View instances or their Context in the ViewModel.

   private WordRepository wordRepository;

   private LiveData<List<WordModel>> mWordList;

   //to get the reference of the word repository

   //to get the list of words from word repository

   public WordViewModel(@NonNull Application application)

   {

       super(application);

       wordRepository = new WordRepository(application);

       mWordList = wordRepository.getAllWords();

   }

   //get all the list of words

   //hides the implementation from the ui

   public LiveData<List<WordModel>> getAllWords()

   {

       return mWordList;

   }

   //wrapper method that calls the repository insert()

   //hides the implementation from UI

   public void insert(WordModel wordModel)

   {

       wordRepository.insert(wordModel);

   }

}

 Create XML , MainActivity , Adapters

=> ADAPTER

<?xml version=“1.0” encoding=“utf-8”?>

<RelativeLayout

   xmlns:android=“http://schemas.android.com/apk/res/android”

   android:layout_width=“match_parent”

   android:layout_height=“wrap_content”>

   <TextView

       android:id=“@+id/textViewWord”

       android:layout_width=“match_parent”

       android:layout_height=“wrap_content”

       android:visibility=“visible”/>

</RelativeLayout>

public class WordListAdapter extends RecyclerView.Adapter<WordListAdapter.ViewHolder> {

   private LayoutInflater mInflater = null;

   private List<WordModel> mWords; // Cached copy of words

   public WordListAdapter(Context context) { mInflater = LayoutInflater.from(context); }

   @NonNull

   @Override

   public WordListAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

       View itemView = mInflater.inflate(R.layout.recyclerview_item, viewGroup, false);

       return new ViewHolder(itemView);

   }

   @Override

   public void onBindViewHolder(@NonNull WordListAdapter.ViewHolder viewHolder, int position) {

       if (mWords != null) {

           WordModel current = mWords.get(position);

           Log.d(“Main”,“::”+current.getWord());

           viewHolder.wordItemView.setText(current.getWord());

       } else {

           // Covers the case of data not being ready yet.

           viewHolder.wordItemView.setText(“No Word”);

       }

   }

   public void setWords(List<WordModel> words){

       mWords = words;

       notifyDataSetChanged();

   }

   // getItemCount() is called many times, and when it is first called,

   // mWords has not been updated (means initially, it’s null, and we can’t return null).

   @Override

   public int getItemCount() {

       if (mWords != null)

       {

           return mWords.size();

       }

       else return 0;

   }

   class ViewHolder extends RecyclerView.ViewHolder {

       private final TextView wordItemView;

       private ViewHolder(View itemView) {

           super(itemView);

           wordItemView = itemView.findViewById(R.id.textViewWord);

       }

   }

}

MAIN ACTIVITY

<?xml version=“1.0” encoding=“utf-8”?>

<RelativeLayout

   xmlns:android=“http://schemas.android.com/apk/res/android”

   xmlns:app=“http://schemas.android.com/apk/res-auto”

   xmlns:tools=“http://schemas.android.com/tools”

   android:layout_width=“match_parent”

   android:layout_height=“wrap_content”

   tools:context=“.MainActivity”>

   <android.support.v7.widget.RecyclerView

       android:id=“@+id/recyclerview”

       android:layout_width=“match_parent”

       android:layout_height=“wrap_content”

       android:layout_marginTop=“70dp”

       app:layoutManager=“android.support.v7.widget.LinearLayoutManager”

       />

   <android.support.design.widget.FloatingActionButton

       android:id=“@+id/fab”

       android:layout_width=“wrap_content”

       android:layout_height=“wrap_content”

       android:layout_gravity=“end|bottom”

       android:src=“@drawable/ic_add_icon”

       android:layout_alignParentBottom=“true”

       android:layout_alignParentRight=“true”

       android:layout_margin=“16dp” />

</RelativeLayout>

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

   private RecyclerView recyclerView;

   //all the activity’s interactions are with the WordViewModel only.

   private WordViewModel mWordViewModel;

   private WordListAdapter adapter;

   private FloatingActionButton mAddNewWord;

   //Retrofit’

   private ApiInterface apiInterface;

   private List<CityModel> mCityList;

   public static final int NEW_WORD_ACTIVITY_REQUEST_CODE = 1;

   @Override

   protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

       loadLocalView();

       loadRecyclerView();

       callToApi();

   }

   private void callToApi() {

       apiInterface = ApiClient.getClient().create(ApiInterface.class);

       Call<List<CityModel>> call = apiInterface.getAllCities();

       call.enqueue(new Callback<List<CityModel>>() {

           @Override

           public void onResponse(Call<List<CityModel>> call, Response<List<CityModel>> response) {

               Log.e(“Response”,“::”+response.body());

           }

           @Override

           public void onFailure(Call<List<CityModel>> call, Throwable t) {

           }

       });

   }

   private void loadLocalView() {

       recyclerView = findViewById(R.id.recyclerview);

       mAddNewWord = findViewById(R.id.fab);

       //Use ViewModelProviders to associate your ViewModel with your UI controller.

       // When your app first starts, the ViewModelProviders class creates the ViewModel.

       // When the activity is destroyed, for example through a configuration change, the ViewModel persists.

       // When the activity is re-created, the ViewModelProviders return the existing ViewModel

       mWordViewModel = ViewModelProviders.of(this).get(WordViewModel.class);

       //When the observed data changes while the activity is in the foreground, the onChanged() method is invoked and updates the data cached in the adapter.

       mWordViewModel.getAllWords().observe(this, new Observer<List<WordModel>>() {

           @Override

           public void onChanged(@Nullable List<WordModel> wordModels) {

               // Update the cached copy of the words in the adapter.

                   adapter.setWords(wordModels);

           }

       });

       mAddNewWord.setOnClickListener(this);

   }

   private void loadRecyclerView() {

       adapter = new WordListAdapter(this);

       recyclerView.setAdapter(adapter);

       recyclerView.setLayoutManager(new LinearLayoutManager(this));

   }

   @Override

   public void onClick(View v) {

       switch (v.getId())

       {

           case R.id.fab:

               Intent intent = new Intent(MainActivity.this, AddWordActivity.class);

               startActivityForResult(intent, NEW_WORD_ACTIVITY_REQUEST_CODE);

               break;

       }

   }

   public void onActivityResult(int requestCode, int resultCode, Intent data) {

       super.onActivityResult(requestCode, resultCode, data);

       if (requestCode == NEW_WORD_ACTIVITY_REQUEST_CODE && resultCode == RESULT_OK) {

           WordModel word = new WordModel(data.getStringExtra(AddWordActivity.EXTRA_REPLY));

           mWordViewModel.insert(word);

       } else {

           Toast.makeText(

                   getApplicationContext(),

                   R.string.empty_not_saved,

                   Toast.LENGTH_LONG).show();

       }

   }

}

________________________________________________________________________________________________________________

Outsource Android Developer: HIRE ANDROID DEVELOPER

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While buying any smartphone the first thing that needs to get decide is which OS phone you want to buy. The two most popular choices that lie in everyone’s head is – Android and iOS. Both are equally useful and plays an important role in your life.

There is nothing like choosing the perfect among the two as both are equally perfect with their work of operations. There are many chances the first OS you use ends up liking that only.

Though both are perfectly good with their features and performs all the actions required. But if you’ll take a closer look from the business perspective you’ll end up noticing the differences between them. Devices supporting both OS are often pricey purchases. You may even decide you want to use credit to foot the bill for one; if you have a good or bad credit score it is important you find out before going ahead with your purchase.

iOS

iOS is a mobile operating system specially invented for the use of Apple manufactured products. Devices like iPhone, iPad, iPod Touch, and Apple TV everything runs on iOS. Invented in the year 2007 iOS is based upon direct manipulation. iOS interface control elements consist of sliders, switches, and buttons and interaction includes gestures like tap, pinch, swipe, and reverse pinch.

Must read: Importance Of Developing iOS Application For Your Business

Android

Android is a mobile operating system based on the modified version of the Linux kernel. Developed by Google, it is primarily designed for touchscreen mobile devices.

Do you know – Top 5 benefits of Hiring Android Developers Offshore

Difference between iOS and Android

Hardware

The first point through which we’ll show you the difference between Android and iOS is its hardware. As you all know Google’s Android software is used by nearly all the mobile phone companies like LG, Samsung, HTC, etc. However, on the other side, you’ll find iPhones are launched only by Apple. And only iPhones can make use of iOS software and hardware. It shows Apple’s restrictions, protection, and control over its operating system.

Android phones are commonly used by a large number of public because of its price, features, and quality. Providing good quality features and services they are much cheaper than iPhones. But since they are so readily available their hardware is more prone to problems.

Interface

iOS and Android both using the touch interfaces have lots of things in common. Like swiping, tapping, zooming and pinch. Just like computer desktop both iOS and Android operating systems boots to a home screen. Android using the feature of widgets auto-updates information such as weather and email. While the iOS home screen contains only rows of app icons. Both iOS and Android displays their status bar on the top of the screen showing information like time, WiFi, cell signal, and battery life.

Control

If you will compare you’ll see the App Store offers very few applications than Google’s Play Store. Also, Apple is much more strict with its apps. On the contrary Android apps are easy to install and download. It is also seen that it is easy to put any fake app in Google’s Play Store. It is a major potential security threat for users. Apple goes through all the points before putting any app in the App Store – offering complete security. Thus development costs of Apple apps are costlier than Google apps.

Affordability

Apple products in terms of pricing always run high in the market. If you’ll go and check the newest model of Apple that is iPhone X is available at Rs. 94, 845. Similarly, the starting price of the iPhone XR is Rs. 63, 699 and iPhone XS Max is Rs. 1,24,900. Buying such a high-cost mobile phone with an average income is not at all possible. Repairs can be expensive on iPhones so you should choose the best case for your iphone xr if you do decide to buy one!

On the other hand, if you’ll choose the latest model of Android smartphones that is Samsung Galaxy S10 Plus or Google’s Pixel 3 XL their prices are quite low and affordable. Even if you buy the best Android mobile phone of 2019 that is One Plus 6T is also very less in price as compared to Apple.

Thus one can clearly see the huge choice of a good and low-cost variety of Android phones as compared to Apple. And the features and services provided by them are not less in any mode of comparison. Also, the apps provided by Android are free and offers much more variety. Therefore choosing Android over Apple is always a choice of benefit in terms of cost.

Battery Life

Battery usage is another important factor which matters the most when you start using any cell phone. Since both the platforms share no common hardware it is tough to mention their differences.

If you see them together both the Apple and Android allows its users to check the amount of battery they’ve used. Also, both offer the power-saving modes which can be used to extend the life of your mobile battery.

Both Apple and Android provides you the functions of limiting performance and connectivity including many other features and options. However, if you’ll give a close look you’ll see Android has the ability to customize its power-saving modes. Many Android phones possess the power of fast-charging capabilities or even wireless charging. In that case, you’ll have to look for a fast-charging adapter which is usually already provided in the Android box. Thus after comparing both the one you can trust more in terms of battery is Android.

Here are some of the other characteristics possessed by iOS are –

• iOS is a powerful platform providing clean and up-to-date menu system.
• The interface of iOS is not a headache.
• However, it possesses a lack of optimization
• iOS provides you top-quality third-party applications.
• Provides great reliability to its users
• Works in a professional way.
• Applications on iOS cannot access the operating system. Android applications, on the other hand, can directly access its operating system. Which means if the Android application crashed it would take down the entire system of your phone.
• iOS is more secured to come into contact with viruses or malware.
• Development of an app is more easy in Android as compared to iOS.
• iOS is more easy to update with new versions as compared to Android.
• iOS provided with integrated theft prevention software helps you track your phone if lost or stolen.
• Without entering your password it is impossible to turn the GPS off.

Characteristics possessed by Android are –

• Android is much more flexible and easy in use.
• Android interface is much real in use. It gives you the exact look of icons and fonts as compared to iOS.
• Providing access to the operating system, Android allows you to install any app from its Play Store.
• Android provides you to use its features in more fun ways.
• Apple introduces its features in a very slow process however Apple, on the other hand, is more frequent in launching new features.
• Android smartphones provide you more hardware capabilities and features as compared to Apple.
• Home Screens of Android can not only be filled with apps but also with widgets which allows you to stay connected.
• Android smartphones are less costly than iOS.

Conclusion

After going through their differences it is very clear that both Android and iOS are equally good and important in their places. Choosing one among the two operating systems is completely based on your choice of work. Different categories are liked by different peoples. Some prefer hardware while some prefer security.

If you want your smartphone provides you good battery capacity and customization techniques choose Android. Or else if you want a more professional platform for your work then choose iOS.

Both iOS and Android are good with their features and performs their tasks very efficiently.

You can even start your e-commerce business using Android and iOS services. If you’re looking to design your website in Android and iOS contact us. Hire Android developers and dedicated iOS developers from Nimap Infotech. Our company outsources IT developers on a timely or project basis.

Our Android and iOS developers are well experienced in their work and had served more than 500 clients.

If you’re looking forward to getting iOS app development course done or getting trained in-house for iPhone app development course, then give us a call. We have world-class trainers available to guide you for the Android course in Mumbai. We have the best iOS training company faculty ready to guide you in your endeavors

Because of the growing digitalization and smartphone craze, you must be very well aware of what Android is and how it functions. Developed by Google this mobile operating system is based on the modified versions of Linux kernel and other open source software.

Initially, the software is designed for smartphones and tablets that is for the use of touchscreen mobile devices. However which further got developed with the specialized user interface. Like Android TV, Android Auto, Android wear watches, Android games and many more. For business purpose, Android App development leads to increase productivity with better ROI on business.

What Does Offshore Mean?

Offshore in simple terms is known as the process that provides or outsources digital services to overseas companies. Offshore outsourcing removing the headache of hiring simply outsources their digital services for a particular time period. Depending on the time or project when a company obtains its services from outside the country.

Thus obtaining the services to work for your company from outside the company where it is established is known as offshore outsourcing. The biggest advantage it provides is that you can hire services from low-cost region to get your work done at a very low-cost price.  

Do you know How to develop an app for android?

The process of involving or outsourcing digital services to overseas companies is known as offshore development. Using the process of offshore outsourcing business enterprises will receive custom-built software and dynamic web and mobile applications without getting any headache of hiring.

Often, the terms offshore and outsourcing appears interchangeably but there are some subtle differences that exist.

Advantages of hiring offshore developers include:

• Increased productivity
• Cost reduction
• Minimal risks
• Talent Acquisitions
• Tax savings
• Quality
• Managed services
• Time-saving
• Access to best skills and technologies
• Timely delivery of projects
• Saves time and efforts

Here’s a list of ways showing how hiring Android developers offshore can increase your mobile development team and business’ productivity.

1. Effectively Delegate Tasks

While you expand your business development it is natural to hire developers for handling your increased work. If you think multitasking can help you it can only be done to a certain extent. For handling each task properly you need to hire developers.

Effectively Task Delegation

However, if you don’t want to take risks with your budget and want to go smart with your business. You can think of hiring offshore developers.

Android app developers offshore allow you to add members in your team to evenly divide your work tasks. Hiring developers from offshore provide you more flexibility in your work. Offshore developers help you add developers to your team with different goals, knowledge, talent, and environment. It helps your teammates learn more things from them.

2) Control

If you have a big project you can even hire and make a small team of your offshore developers. The team will work according to your instructions in the way you want your project to be. Giving you complete control over your team you can plan, decide, and develop strategies to guide how your team should work. It will help you take complete control over your project operations.  

3) Enhances Productivity

With the development of Google’s latest version – KitKat, Android opened many opportunities for their customers. Combining both the search technology and data on mobile devices it introduced many new features. With the use of these Android developers can access all the information, data, contacts and other apps such as Gmail, Chrome, Search, Drive, and Maps. Also, Google’s personal virtual assistant will help you learn about many new things.

Enhance Productivity

Leveraging this technology any Android developer can create and design a good app of their choice. It makes the Android platform enhance its productivity and overall user experience.

4) Individual Services and Security

Depending on the needs of your work and projects Android developers will go the in-depth study to the needs of the application. Offshore developers will always provide you suggestions that are new to improve your application.

Safety concept: Blue Closed Padlock on digital background, 3d render; Shutterstock ID 147872255; PO: 2016-07-14

However, the only challenge one will face while hiring offshore Android developer is security. Hiring offshore developers is very common increasing the chance of frauds and threats.

Must Read Related:

What Decides The Cost Of Android App Development In India?

Therefore always be professional when it comes to working. No matter how well you know the offshore developer always signs an NDA (non-disclosure agreement) with them. It will keep your companies information safe and free from the reach of the wrong hands.

5) Exchanging Rates Difference

The difference in currency rates adds great benefit in increasing your income. Helping both the developers and owner difference in the currency rate will always serve more profit.

6) Error-free Projects

Hiring a developer offshore benefits you as they are always experienced. They work with high standards of proficiency and reliability. They will always take your work seriously to complete it as soon as possible. This guarantees you error-free submission of projects.  

Conclusion

Thus hiring an offshore developer assures you excellent project deliveries. Offshore developers are filled with different skills. Bringing different talents in one room will generate your ideas in a completely new way. You can tell and add all the extra features that you want to show up in your work. They will always work on your projects putting 100% efforts.

Hire the best Android developer to design your app in the most innovative way. If you do not have much knowledge about Android development applications hire Android developers who can guide you.

Read more about Android development services at Nimap Infotech to know more about Android solutions. Our Android developers are always ready to help you meet your needs.