How to get current foreground activity context in Android?

This example demonstrate about How to get current foreground activity context in Android

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 src/MyApp.java

package app.tutorialspoint.com.sample ; import android.app.Activity ; import android.app.Application ; public class MyApp extends Application {    private Activity mCurrentActivity = null;    @Override    public void onCreate () {       super .onCreate() ;    }    public Activity getCurrentActivity () {       return mCurrentActivity ;    }    public void setCurrentActivity (Activity mCurrentActivity) {       this . mCurrentActivity = mCurrentActivity ;    } }

Step 3 − Add the following code to src/MyBaseActivity.java

package app.tutorialspoint.com.sample ; import android.app.Activity ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; public class MyBaseActivity extends AppCompatActivity {    protected MyApp mMyApp ;    public void onCreate (Bundle savedInstanceState) {       super .onCreate(savedInstanceState) ;       mMyApp = (MyApp) this .getApplicationContext() ;    }    protected void onResume () {       super .onResume() ;       mMyApp .setCurrentActivity( this ) ;    }    protected void onPause () {       clearReferences() ;       super .onPause() ;    }    protected void onDestroy () {       clearReferences() ;       super .onDestroy() ;    }    private void clearReferences () {       Activity currActivity = mMyApp .getCurrentActivity() ;       if ( this .equals(currActivity))          mMyApp .setCurrentActivity( null ) ;    } }

Step 4 − Add the following code to src/MainActivity.java

package app.tutorialspoint.com.sample ; import android.app.Activity ; import android.support.v7.app.AppCompatActivity ; import android.os.Bundle ; public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate (Bundle savedInstanceState) {       super .onCreate(savedInstanceState) ;       setContentView(R.layout. activity_main ) ;       Activity currentActivity = ((MyApp)       getApplicationContext()).getCurrentActivity() ;    } }

Step 5 − Add the following code to androidManifest.xml

<? xml version= "1.0" encoding= "utf-8" ?> <manifest xmlns: android = "http://schemas.android.com/apk/res/android"    package= "app.tutorialspoint.com.sample" >    <uses-permission android :name= "android.permission.CALL_PHONE" />    <application       android :name= ".MyApp"       android :allowBackup= "true"       android :icon= "@mipmap/ic_launcher"       android :label= "@string/app_name"       android :roundIcon= "@mipmap/ic_launcher_round"       android :supportsRtl= "true"       android :theme= "@style/AppTheme" >       <activity android :name= ".MainActivity" >          <intent-filter>             <action android :name= "android.intent.action.MAIN" />             <category android :name= "android.intent.category.LAUNCHER" />          </intent-filter>       </activity>       <activity android :name= ".MyBaseActivity" />    </application> </manifest>