[英]how to unregister multiple sensors android
I registered 3 sensors to my sensor manager: 我向传感器管理器注册了3个传感器:
if(sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER) !=null ){
accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
sensorManager.registerListener(this,accelerometer,SensorManager.SENSOR_DELAY_NORMAL);
}
if(sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE) !=null ){
gyroscope = sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
sensorManager.registerListener(this,gyroscope,SensorManager.SENSOR_DELAY_NORMAL);
}
if(sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD) !=null ){
magnetometer = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
sensorManager.registerListener(this,magnetometer,SensorManager.SENSOR_DELAY_NORMAL);
}
and my onResume method: 和我的onResume方法:
@Override
protected void onResume() {
super.onResume();
sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL);
sensorManager.registerListener(this, magnetometer, SensorManager.SENSOR_DELAY_NORMAL);
sensorManager.registerListener(this, gyroscope, SensorManager.SENSOR_DELAY_NORMAL);
}
so when I unregister the sensor manager, should I unregister 3 times, or just once? 因此,当我注销传感器管理器时,应该注销3次还是一次? Currently I use this: 目前我使用这个:
@Override
protected void onPause() {
super.onPause();
sensorManager.unregisterListener(this);
}
When you register the listeners you declarare a SensorListener
(in this case I guess is your activity that implements SensorEventListener
): 当您注册侦听器时,您将声明一个SensorListener
(在这种情况下,我想这是您implements SensorEventListener
的活动):
sensorManager.registerListener(this,accelerometer,SensorManager.SENSOR_DELAY_NORMAL);
// ↑ here
So use only once unregisterListener
because you don't unregister individual sensors, you unregister SensorListener
as you can see in method signature: 因此,仅使用一次unregisterListener
因为您没有注销单个传感器,而是注销了SensorListener
如方法签名所示:
public void unregisterListener (SensorListener listener) 公共无效的unregisterListener(SensorListener侦听器)
UPDATE: 更新:
if you need to disconnect an individual sensor just use the overloaded version of unregisterListener
如果需要断开单个传感器的连接,只需使用unregisterListener
的重载版本
public void unregisterListener (SensorEventListener listener, Sensor sensor) 公共无效的unregisterListener(SensorEventListener侦听器,Sensor传感器)
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