android : 근접 센서 문제

Question

간단한 질문이지만 필자는 몇 가지 자습서를 따랐지만 근접 센서는 작동하지 않습니다. 난 단지 프로그램이 존재한다는 사실을 얻을 수 있습니다,하지만 난 근접 센서를 통해 내 손을 넣을 때 텍스트는 변경되지 않습니다

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) { 

} 

} 

솔루션 :

여기

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) { 

} 

가 드디어 도착 방법 그것은 작업, 모든 도움들 : 감사

당신은 센서에 리스너를 연결하는 잊어 버린

Answer 1

:

sensor.registerListener(this); 

,

이상 :

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