how to press back button programmatically in android

Question

A SERVICE I HAVE NOT ANY ACTIVITY is running in forebackground and when user click on app button i want do function of hardware back button onBackPressed is not working inside service!!

Answer 1

Is it not possible to programmatically press the back button on android through a service

onBackPressed() Called when the activity has detected the user's press of the back key.

you need to just call onBackPressed() method don't forgot override onBackPressed() in your activity

@Override
    public void onBackPressed() {
        super.onBackPressed();   
        // perform your action here

    }

Answer 2

You can handle back button operation like this;

@Override
public void onBackPressed() {
// your code.
}

otherwise try below code;

@Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
    // your code
    return true;
}

return super.onKeyDown(keyCode, event);
}

Answer 3

You can handle back button operation like this;

 @Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
        //Home Button!
        case android.R.id.home:
            finish();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

Answer 4

Currently, it's not possible to press "BACK" from service. Since you don't have an activity in the foreground, you don't have the ability to programmatic to press a BACK press, due the fact the service not provide any user interface. What is the option - If you have a rooted device with an access to shell you can try to use the following command in the service Process process = Runtime.getRuntime().exec("adb shell input keyevent 4");