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簡單的問題,我跟着幾個教程,但我的接近傳感器不起作用。我只能編程方式獲得的事實,它確實存在,但是當我把我的手在接近傳感器的文本不會更改:android:接近傳感器問題
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) {
}
}
解決方案:
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) {
}
下面是我終於得到了它的工作,感謝所有幫助傢伙:)
錯誤:無法解析方法,還是應sensorManager.registerListener()?如果是,那麼參數應該是什麼? – xXJJJasonMokXx
嘗試將'SensorEventListener'更改爲'SensorListener' – Manitoba
但是我仍然無法完成'sensor.registerListener(this);' – xXJJJasonMokXx