How to Programmatically Answer/End a Call in Android 4.1

How to programmatically answer/end a call in Android 4.1?

This works from Android 2.2 to 4.0 and now after adding the try catch to the last line it works for 4.1.2 and 4.2 Frankly speaking dont know how it works but it works for me.

Log.d(tag, "InSecond Method Ans Call");
// froyo and beyond trigger on buttonUp instead of buttonDown
Intent buttonUp = new Intent(Intent.ACTION_MEDIA_BUTTON);
buttonUp.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
sendOrderedBroadcast(buttonUp, "android.permission.CALL_PRIVILEGED");

Intent headSetUnPluggedintent = new Intent(Intent.ACTION_HEADSET_PLUG);
headSetUnPluggedintent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
headSetUnPluggedintent.putExtra("state", 0);
headSetUnPluggedintent.putExtra("name", "Headset");
try {
    sendOrderedBroadcast(headSetUnPluggedintent, null);
} catch (Exception e) { 
    e.printStackTrace();
}

This is working for me in Android 4.1.2 as well as i have tested on 4.2
This still gives an exception which is handled.

Edit for End Call

Hope this helps all the people looking for total solution for answer and end call.

/**
 * Reject button click listener will reject the incoming call.
 */
private class RejectCallOnClickListener implements OnClickListener {
    @Override
    public void onClick(View v) {
        Log.d(tag, "OnRejectButton: " + "Reject OnClick");
        ignoreCall();
        exitCleanly();
    }
}

/**
 * ignore incoming calls
 */
private void ignoreCall() {
    if (USE_ITELEPHONY)
        ignoreCallAidl();
    else
        ignoreCallPackageRestart();
}
/**
 * AIDL/ITelephony technique for ignoring calls
 */
private void ignoreCallAidl() {
    try {
        // telephonyService.silenceRinger();

        telephonyService.endCall();
    } catch (RemoteException e) {
        e.printStackTrace();
        Log.d(tag, "ignoreCall: " + "Error: " + e.getMessage());

    } catch (Exception e) {
        e.printStackTrace();
        Log.d(tag, "ignoreCall" + "Error: " + e.getMessage());

    }
}
/**
 * package restart technique for ignoring calls
 */
private void ignoreCallPackageRestart() {
    ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
    am.restartPackage("com.android.providers.telephony");
    am.restartPackage("com.android.phone");
}
/**
 * cleanup and exit routine
 */
private void exitCleanly() {
    unHookReceiver();
    this.finish();

}

end incoming call programmatically

Try this Sure it will work. It's working fine for me.

You could download the ITelephony.java file from ITelephony.java

After that you add the method to end call:

Function to Disconnect call

public void disconnectCall(){
 try {

    String serviceManagerName = "android.os.ServiceManager";
    String serviceManagerNativeName = "android.os.ServiceManagerNative";
    String telephonyName = "com.android.internal.telephony.ITelephony";
    Class<?> telephonyClass;
    Class<?> telephonyStubClass;
    Class<?> serviceManagerClass;
    Class<?> serviceManagerNativeClass;
    Method telephonyEndCall;
    Object telephonyObject;
    Object serviceManagerObject;
    telephonyClass = Class.forName(telephonyName);
    telephonyStubClass = telephonyClass.getClasses()[0];
    serviceManagerClass = Class.forName(serviceManagerName);
    serviceManagerNativeClass = Class.forName(serviceManagerNativeName);
    Method getService = // getDefaults[29];
    serviceManagerClass.getMethod("getService", String.class);
    Method tempInterfaceMethod = serviceManagerNativeClass.getMethod("asInterface", IBinder.class);
    Binder tmpBinder = new Binder();
    tmpBinder.attachInterface(null, "fake");
    serviceManagerObject = tempInterfaceMethod.invoke(null, tmpBinder);
    IBinder retbinder = (IBinder) getService.invoke(serviceManagerObject, "phone");
    Method serviceMethod = telephonyStubClass.getMethod("asInterface", IBinder.class);
    telephonyObject = serviceMethod.invoke(null, retbinder);
    telephonyEndCall = telephonyClass.getMethod("endCall");
    telephonyEndCall.invoke(telephonyObject);

  } catch (Exception e) {
    e.printStackTrace();
    Log.error(DialerActivity.this,
            "FATAL ERROR: could not connect to telephony subsystem");
    Log.error(DialerActivity.this, "Exception object: " + e); 
 }
}

How to programmatically answer a call?

It's not possible, check this thread for further information.

Answer phone call

Intercepting calls only works from 2.2 - 4.0. Google has blocked the MODIFY_PHONE_STATE permission for anyone except for phone manufacturer certificates

Google has restricted intercepting calls as a security feature. In short, you're not allowed to do this on purpose.

You can see it here in the Android developer documentation:

public static final String MODIFY_PHONE_STATE

Added in API level 1
Allows modification of the telephony state - power on, mmi, etc. Does not include placing calls.

Not for use by third-party applications.

Constant Value: "android.permission.MODIFY_PHONE_STATE"

Note the phrase Not for use by third-party applications.

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