android：接近传感器问题

简单的问题，我跟着几个教程，但我的接近传感器不起作用。我只能编程方式获得的事实，它确实存在，但是当我把我的手在接近传感器的文本不会更改：android：接近传感器问题

public class MainActivity extends Activity implements SensorEventListener { 
private SensorManager sensorManager; 
private Sensor sensor; 
private TextView textView; 

@Override 
protected void onPostCreate(Bundle savedInstanceState) { 
    super.onPostCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE); 
    sensor = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); 
    textView = (TextView) findViewById(R.id.textview); 

    if(sensor == null) { 
     textView.setText("No Proximity Sensor found"); 
    }else{ 
     textView.setText(sensor.getName() + " Found"); 
    } 
} 

@Override 
protected void onResume() { 
    super.onResume(); 
} 

@Override 
protected void onPause() { 
    super.onPause(); 
    sensorManager.unregisterListener(this); 
} 

@Override 
public void onSensorChanged(SensorEvent event) { 
    if(event.sensor.getType() == Sensor.TYPE_PROXIMITY) { 
     if(event.values[0] == 0) { 
      textView.setText("You are near: " + String.valueOf(event.values[0])); 
     }else{ 
      textView.setText("You are far: " + String.valueOf(event.values[0])); 
     } 
    } 
} 

@Override 
public void onAccuracyChanged(Sensor sensor, int accuracy) { 

} 

}

解决方案：

public class MainActivity extends Activity implements SensorEventListener { 
private SensorManager sensorManager; 
private Sensor sensor; 
private TextView textView; 

@Override 
protected void onPostCreate(Bundle savedInstanceState) { 
    super.onPostCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE); 
    sensor = sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); 
    textView = (TextView) findViewById(R.id.textview); 

    if(sensor == null) { 
     textView.setText("No Proximity Sensor found"); 
    }else{ 
     textView.setText(sensor.getName() + " Found"); 
    } 
    sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY), SensorManager.SENSOR_DELAY_NORMAL); 
} 

@Override 
protected void onResume() { 
    super.onResume(); 
    sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY), SensorManager.SENSOR_DELAY_NORMAL); 
} 

@Override 
protected void onPause() { 
    super.onPause(); 
    sensorManager.unregisterListener(this); 
} 

@Override 
public void onSensorChanged(SensorEvent event) { 
    if(event.sensor.getType() == Sensor.TYPE_PROXIMITY) { 
     if(event.values[0] == 0) { 
      textView.setText("You are near: " + String.valueOf(event.values[0])); 
     }else{ 
      textView.setText("You are far: " + String.valueOf(event.values[0])); 
     } 
    } 
} 

@Override 
public void onAccuracyChanged(Sensor sensor, int accuracy) { 

}

下面是我终于得到了它的工作，感谢所有帮助家伙:)

来源

2014-02-05 xXJJJasonMokXx

你忘了听众连接到传感器：

sensor.registerListener(this);

或者更好的是：

sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_FASTEST);

来源

2014-02-05 11:55:24 Manitoba

错误：无法解析方法，还是应sensorManager.registerListener（）？如果是，那么参数应该是什么？ – xXJJJasonMokXx

尝试将'SensorEventListener'更改为'SensorListener' – Manitoba

但是我仍然无法完成'sensor.registerListener（this）;' – xXJJJasonMokXx

android：接近传感器问题

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