我正在使用android工作室和Android 2.3模拟器。我无法找到为什么" onSensorChanged"当我改变加速度计的参数时不会调用。我通过stackoverflow搜索解决方案,但没有任何对我有用。
import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;
public class MainActivity extends Activity implements SensorEventListener {
private SensorManager sensorManager;
private Sensor sensor;
private TextView myTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myTextView = (TextView) findViewById(R.id.textView3);
sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
sensorManager.registerListener(this,
sensor,
SensorManager.SENSOR_DELAY_NORMAL);
myTextView.setText("Waiting...");
}
@Override
protected void onPause() {
super.onPause();
sensorManager.unregisterListener(this);
}
@Override
protected void onResume() {
super.onResume();
sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_GAME);
}
@Override
public void onSensorChanged(SensorEvent event) {
Sensor mySensor = event.sensor;
if (mySensor.getType() == Sensor.TYPE_ACCELEROMETER) {
float x = event.values[0];
float y = event.values[1];
float z = event.values[2];
myTextView.setText((int) x);
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}
如您所见,我正在将textView3更改为值"等待..."并且在运行应用程序之后它仍然是等待......"。即使我改变了加速计传感器的参数,但它必须显示X值。
删除" sensorManager.registerListener(this,sensor,SensorManager.SENSOR_DELAY_NORMAL);" in" onCreate"没有解决问题。我需要Android 2.3
似乎API 9不支持Accelerometer模拟器。 资料来源:https://stackoverflow.com/a/10612952/7878803