Android Articles

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How to save an Android Activity state using save instance state?

Vrundesha Joshi
Vrundesha Joshi
Updated on 30-Jul-2019 846 Views

This example demonstrate about How to save an Android Activity state using save instance stateStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     In the above code, we have taken text view to show restore instance elements.Step 3 − Add the following code to src/MainActivity.java import android.os.Build; import android.os.Bundle; import android.os.PersistableBundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    TextView actionEvent;    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)   ...

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How to send message from firebase console after creation project?

Jennifer Nicholas
Jennifer Nicholas
Updated on 30-Jul-2019 187 Views

Open your firebase page (https://console.firebase.google.com/) as shown below –Now select your project. In our case we have tutorialspoint project. It will direct to console page of project as shown below –Now scroll down right side menu to grow as shown below –In Grow tab select Cloud messaging as shown below –Now click on new notification button. It will redirect to compose message button as shown below –Now write your message as shown below –Now click on next to go target tab. Now select project as shown below –Now click on next button to go schedule as shown below –Now click ...

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How to Use Android loader?

Nitya Raut
Nitya Raut
Updated on 30-Jul-2019 1K+ Views

This example demonstrate about How to Use Android loaderStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. ss     In the above code, we have taken listview to show contact names.Step 3 − Add the following code to src/MainActivity.java import android.Manifest; import android.content.CursorLoader; import android.content.Loader; import android.content.pm.PackageManager; import android.database.Cursor; import android.os.Bundle; import android.provider.ContactsContract; import android.support.v4.app.ActivityCompat; import android.support.v4.app.FragmentActivity; import android.support.v4.content.ContextCompat; import android.support.v4.widget.SimpleCursorAdapter; import android.widget.ListView; public class MainActivity extends FragmentActivity implements android.app.LoaderManager.LoaderCallbacks {    private ...

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How to use findViewById in Fragment?

Jennifer Nicholas
Jennifer Nicholas
Updated on 30-Jul-2019 5K+ Views

This example demonstrate about How to use findViewById in FragmentStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.                             In the above code, we have taken two fragments.Step 3 − Add the following code to src/MainActivity.java import android.os.Bundle; import android.support.v4.app.FragmentActivity; public class MainActivity extends FragmentActivity {    @Override    public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);   ...

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How to use firebase messaging in android application?

Nitya Raut
Nitya Raut
Updated on 30-Jul-2019 466 Views

This example demonstrate How to use firebase messaging in android applicationStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to src/MainActivity.java import android.os.Bundle; import android.support.v4.app.FragmentActivity; public class MainActivity extends FragmentActivity {    @Override    public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);    } }Step 3 − Add the following code to src/ MyFirebaseMessagingService.java import android.app.Notification; import android.app.NotificationChannel; import android.app.NotificationManager; import android.content.Context; import android.graphics.Color; import android.os.Build; import android.support.v4.app.NotificationCompat; import android.support.v4.content.ContextCompat; import android.util.Log; ...

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How to use handler in android?

Jennifer Nicholas
Jennifer Nicholas
Updated on 30-Jul-2019 995 Views

This example demonstrate about How to use handler in androidStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     In the above code, we have taken button.Step 3 − Add the following code to src/MainActivity.java import android.os.Bundle; import android.os.Handler; import android.support.v4.app.FragmentActivity; import android.util.DisplayMetrics; import android.widget.Button; import java.util.Random; import java.util.Timer; import java.util.TimerTask; public class MainActivity extends FragmentActivity {    Handler handler;    @Override    public void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState); ...

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How to use LocalBroadcastManager?

Vrundesha Joshi
Vrundesha Joshi
Updated on 30-Jul-2019 483 Views

This example demonstrate about How to use LocalBroadcastManagerStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     In the above code, we have taken text view to show broadcast values.Step 3 − Add the following code to src/MainActivity.java import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    TextView actionEvent;   ...

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How to use context in a fragment?

Vrundesha Joshi
Vrundesha Joshi
Updated on 30-Jul-2019 2K+ Views

This example demonstrate about How to use context in a fragmentStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.                             In the above code, we have taken two fragments.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Bundle; import android.support.v4.app.FragmentActivity; public class MainActivity extends FragmentActivity {    @Override    public void onCreate(Bundle savedInstanceState) {       ...

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Proper use cases for Android UserManager.isUserAGoat()?

Nitya Raut
Nitya Raut
Updated on 30-Jul-2019 226 Views

This example demonstrate about Proper use cases for Android UserManager.isUserAGoat()Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     In the above code, we have taken text view to show global variable.Step 3 − Add the following code to src/MainActivity.java import android.content.pm.PackageManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    TextView actionEvent;    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)    @Override    protected void onCreate(Bundle ...

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Sending message through WhatsApp in android?

Vrundesha Joshi
Vrundesha Joshi
Updated on 30-Jul-2019 1K+ Views

This example demonstrate about sending message through WhatsApp in androidStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     In the above code, we have taken text view.Step 3 − Add the following code to src/MainActivity.java import android.app.Activity; import android.content.Intent; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.os.Bundle; import android.view.View; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity {    TextView textView;    @Override    public void onCreate(Bundle savedInstanceState) {       ...

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