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我有方法，它集流體積，並且具有哈德勒內部檢查這改變有關設置的延遲nottification改變
用於設置流法服務：
private setStreams(Context context)
{
AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
am.setStreamVolume(AudioManager.STREAM_RING, ringerVol, 0);
am.setStreamVolume(AudioManager.STREAM_NOTIFICATION, notifVol, 0);
am.setStreamVolume(AudioManager.STREAM_MUSIC, mediaVol, 0);
am.setStreamVolume(AudioManager.STREAM_ALARM, alarmVol, 0);
am.setStreamVolume(AudioManager.STREAM_SYSTEM, systemVol, 0);
am.setStreamVolume(AudioManager.STREAM_VOICE_CALL, incallVol, 0);
am.setStreamVolume(6, btVol, 0);
//some other code
}
Serivce：
public class SystemSettingsChangeObserverService extends Service {
private ContentObserver observer;
private static Context context;
@Override
public void onCreate(){
super.onCreate();
context = this;
observer = new ContentObserver (new Handler()) {
@Override
public boolean deliverSelfNotifications() {
return super.deliverSelfNotifications();
}
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
//here I check new values of streams
}
}
...
問題是，onChange在setStreams方法的「其他代碼」之後調用，而不是在每個流的setStreamVolume之後調用。我需要這個，因爲我需要知道卷在應用程序內部還是以其他方式更改。謝謝。