Question

我在文本视图中显示我的温度传感器值，并在另外两个文本视图中显示来自气压传感器的气压和高度问题是第一个文本视图显示气压而不是显示温度，其他文本视图显示正确的气压和高度值，我命名文本视图ID正确，但当我运行应用程序时，dosnt显示温度在第一个文本视图在相同的活动，如果我在两个活动中分开它，它工作得很好，但我想在同一活动中删除它们，这是我的代码

  public class TemperatureActivity extends Activity
    implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor mSensor;
private boolean isSensorPresent;
private TextView mTemperatureValue;
private TextView mPressureValue;
private TextView mAltitudeValue;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mSensorManager =
            (SensorManager)this.getSystemService
                    (Context.SENSOR_SERVICE);
    mTemperatureValue =
            (TextView)findViewById(R.id.temperaturetext);
    if(mSensorManager.getDefaultSensor
            (Sensor.TYPE_AMBIENT_TEMPERATURE) != null) {
        mSensor = mSensorManager.getDefaultSensor
                (Sensor.TYPE_AMBIENT_TEMPERATURE);
        isSensorPresent = true;
    } else {
        mTemperatureValue.setText("Ambient Temperature Sensor is not available!");
        isSensorPresent = false;
    }


    mPressureValue =
            (TextView)findViewById(R.id.pressuretext);
    mAltitudeValue =
            (TextView)findViewById(R.id.altitudetext);
    mSensorManager = (SensorManager)
            this.getSystemService(Context.SENSOR_SERVICE);
    if(mSensorManager.getDefaultSensor
            (Sensor.TYPE_PRESSURE) != null) {
        mSensor = mSensorManager.getDefaultSensor
                (Sensor.TYPE_PRESSURE);
        isSensorPresent = true;
    } else {
        isSensorPresent = false;
        mPressureValue.setText("Pressure Sensor is not available!");
        mAltitudeValue.setText("Cannot calculate altitude, as pressure 
     Sensor is not available!");
    }





}
@Override
protected void onResume() {
    super.onResume();
    if(isSensorPresent) {
        mSensorManager.registerListener(this, mSensor,
                SensorManager.SENSOR_DELAY_NORMAL);
    }
}
@Override
protected void onPause() {
    super.onPause();
    if(isSensorPresent) {
        mSensorManager.unregisterListener(this);
    }
}
@Override
public void onSensorChanged(SensorEvent event) {
    mTemperatureValue.setText("Temperature in degree Celsius is " + 
   event.values[0]);

   float pressure = event.values[0];
    mPressureValue.setText("Pressure in mbar is " +
            pressure);
    float altitude = SensorManager.getAltitude
            (SensorManager.PRESSURE_STANDARD_ATMOSPHERE,
                    pressure);
    mAltitudeValue.setText("Current altitude is " +
            altitude);

}

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

  }



}

Answer 1

@Override
public void onSensorChanged(SensorEvent event) {
    mTemperatureValue.setText("Temperature in degree Celsius is " + 
   event.values[0]);

   float pressure = event.values[0];
    mPressureValue.setText("Pressure in mbar is " +
            pressure);
    float altitude = SensorManager.getAltitude
            (SensorManager.PRESSURE_STANDARD_ATMOSPHERE,
                    pressure);
    mAltitudeValue.setText("Current altitude is " +
            altitude);

}

彻底破碎了。每个传感器事件，您都将相同的值写入多个字段。每个传感器可以获得一个事件。您应该仅在发生温度事件时更新温度，仅在遇到压力事件时更新压力等

用气压和高度显示温度值

1 个答案: