setRingerMode(AudioManager.RINGER_MODE_VIBRATE)未按预期工作

Question

public class ProximityService extends Service implements SensorEventListener{

    boolean hasproximity=false;
    SensorManager mSensorManager;
    AudioManager am;
    Sensor psensor;

    public ProximityService() {

    }
    @Override
    public void onCreate() {
        super.onCreate();
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        am = (AudioManager) this.getSystemService(Context.AUDIO_SERVICE);
        if(mSensorManager.getSensorList(Sensor.TYPE_PROXIMITY).size()>0) {
            Toast.makeText(getApplicationContext(),"Proximity Sensor Detected",Toast.LENGTH_SHORT).show();
            hasproximity=true;
            psensor=mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
            Toast.makeText(getBaseContext(), "sensor event listener addded", Toast.LENGTH_SHORT).show();
            mSensorManager.registerListener(this,psensor,SensorManager.SENSOR_DELAY_UI);
        } else {
            hasproximity=false;
            Toast.makeText(getApplicationContext(),"No Proximity Sensor",Toast.LENGTH_SHORT).show();
            stopSelf();
        }
    }
    @Override

    public void onDestroy() {
        super.onDestroy();
        mSensorManager.unregisterListener(this);
        Toast.makeText(getBaseContext(), "service destroyed", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onStart(Intent intent, int startId) {
        // TODO Auto-generated method stub
        super.onStart(intent, startId);
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        // TODO Auto-generated method stub
        float vals[]=event.values;
        float x; // light value is 0.0 then it is dark
        x=vals[0];
        Toast.makeText(getBaseContext(), "light:"+x, Toast.LENGTH_SHORT).show();
        if(x == 0.0) {
            Toast.makeText(getBaseContext(), "prox closed", Toast.LENGTH_SHORT).show();
            am.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
        } else {
            Toast.makeText(getBaseContext(), "prox open", Toast.LENGTH_SHORT).show();
            am.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
        }
    }
}

此代码用于在覆盖接近感应器时将电话振铃模式从振铃改为振动，即接近感应器接收的光值变为零。

问题是，如果当我们盖上接近传感器时手机已经响起，那么手机将进入静音模式，而不是振动模式。

有人能帮我解决这个问题吗？

Answer 1

您可以使用此代码在>= Jerry Bean版本中进行更改：

Settings.System.putInt(getContentResolver(), "vibrate_when_ringing", 0); //vibrate off
Settings.System.putInt(getContentResolver(), "vibrate_when_ringing", 1); //vibrate on

记得添加权限：

 <uses-permission android:name="android.permission.WRITE_SETTINGS" />