Hide notification bar when incoming call in android

Question

When phone state is ringing, I want to run an activity to show my own screen.

I'm using:

requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);

and

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

but notification bar does not hide when activity is shown.

Answer 1

Go through following code snippets:

1. Create a BroadCastReceiver Class to listen to incoming calls with the highest priority:

   Manifest.xml:

   <receiver android:name=".MyPhoneBroadcastReceiver">
       <intent-filter android:priority="99999">
           <action android:name="android.intent.action.PHONE_STATE" />
       </intent-filter>
   </receiver>
   

2. Then in class, onReceive() method opens the CustomCallsReceiver Activity with intent action is "android.intent.action.ANSWER"

   @Override
   public void onReceive(final Context context, Intent intent) {
   
   Bundle extras = intent.getExtras();
   
   if (extras != null) {
   
       String state = extras.getString(TelephonyManager.EXTRA_STATE);          
       final String incomingNumber = extras.getString("incoming_number");
   
       Handler callActionHandler = new Handler();
   
       Runnable runRingingActivity = new Runnable(){
           @Override
           public void run() {
                //Notice the intent, cos u will add intent filter for your class(CustomCallsReceiver)
               Intent intentPhoneCall = new Intent("android.intent.action.ANSWER");
               intentPhoneCall.putExtra("INCOMING_NUM", incomingNumber);
               intentPhoneCall.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
               context.startActivity(intentPhoneCall);
           }
       };
       if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
           //increase the delay amount if problem occur something like -the screen didn't show up- that's the key about this method(the delay).
           callActionHandler.postDelayed(runRingingActivity, 100);    
       }
       if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {
           callActionHandler.removeCallbacks(runRingingActivity);
       }
   
   }
   }
   

3. Add this intent filter in to manifest file for the class you will use as a Custom call receiver.

       <activity android:name="CustomCallsReceiver" android:noHistory="true" android:screenOrientation="portrait" >
       <intent-filter>
           <action android:name="android.intent.action.ANSWER" />
            <category android:name="android.intent.category.DEFAULT" />
       </intent-filter>    
   </activity>
   

4. The CustomeCallsReceiver Class:

   public class CustomCallsReceiver extends Activity {
   
    private String TAG = "CustomCallsReceiver";
    String incomingNumber, caller;
   
    @Override
      public void onCreate(Bundle savedInstanceState) {
   
   super.onCreate(savedInstanceState);
   setContentView(R.layout.custome_calls_receiver);
   
   TextView number = (TextView) findViewById(R.id.number);
   number.setGravity(Gravity.CENTER);
   
   incomingNumber = getIntent().getExtras().getString("INCOMING_NUM");
   caller = getCallerName(incomingNumber);
   
   if (caller != null) {
       number.setText(caller + "\n" + incomingNumber);  }  
           }
   

5. And finally of course don't forget to add the Theme for not title or notification bar at the manifest file

    <application
         android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
   

Hope this working for you...