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POHow to provide customized vibration on specific incoming calls
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copied!<p>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 would provide vibration (such as in mute mode). I know that this is somehow against the rules, for that an application should respect the users' settings, but the application is limited to some certain users with this need. I have tried two ways but neither of them are satisfying:</p> <ol> <li><p>Listen to the telephony state and directly trigger the vibration service with my own pattern (with <code>Vibrator.vibrate()</code>). This method is effective with no incoming calls yet randomly effective when the phone is in <code>CALL_STATE_RINGING</code> state and I guess it's because of the conflict with the system-wide application that actually handles the vibration upon incoming call.</p></li> <li><p>Judge whether the cellphone is vibrating upon an incoming call (with <code>AudioManager.shouldVibrate()</code>), and decide whether to change the vibrate settings (with <code>AudioManager.setRingerMode()</code> and <code>AudioManager.setVibrateSetting()</code>). If the vibrate settings are changed by my application, they are to be restored once the cellphone is back to <code>CALL_STATE_IDLE</code> state. This method, however, is still not functioning sometimes, without any sign of the reason.</p></li> </ol> <p>I hope that someone could give some advice on this issue. Comments on these two ways or other suggest are welcome.</p>

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