How to provide customized vibration on specific incoming calls

Question

The program functions like this: the user has a list of phone numbers, for which the cellphone could vibrate upon an incoming call only when no other system-wide application wou

Answer 1

You need to play with two settings in order for your phone to vibrate. The first one is the sound mode which needs to be set by using AufioManager:

AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
audioManager.setRingerMode(targetSoundMode);

The second part is not properly documented and I believe this is the missing part of your code:

String VIBRATE_IN_SILENT_SETTING_NAME = "vibrate_in_silent";
Settings.System.putInt(getContentResolver(), VIBRATE_IN_SILENT_SETTING_NAME, 1);

use 1 to turn vibrate on and 0 to turn vibrate off.

to fully understand how you should work with vibrate settings and mode take a look at the following link: http://hi-android.info/src/com/android/settings/SoundSettings.java.html