Android传感器的施用（方向传感器，重力传感器）

Android传感器的使用（方向传感器，重力传感器）

package cn.itcast.sensor;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 {    private TextView accelerometerView;    private TextView orientationView;    private SensorManager sensorManager;    private MySensorEventListener sensorEventListener;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                sensorEventListener = new MySensorEventListener();        accelerometerView = (TextView) this.findViewById(R.id.accelerometerView);        orientationView = (TextView) this.findViewById(R.id.orientationView);        //获取感应器管理器        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);    }	@Override	protected void onResume() {		Sensor orientationSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);		sensorManager.registerListener(sensorEventListener, orientationSensor, SensorManager.SENSOR_DELAY_NORMAL);				Sensor accelerometerSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);		sensorManager.registerListener(sensorEventListener, accelerometerSensor, SensorManager.SENSOR_DELAY_NORMAL);		super.onResume();	}	private final class MySensorEventListener implements SensorEventListener{		@Override		public void onSensorChanged(SensorEvent event) {//可以得到传感器实时测量出来的变化值			if(event.sensor.getType()==Sensor.TYPE_ORIENTATION){				float x = event.values[SensorManager.DATA_X];      				float y = event.values[SensorManager.DATA_Y];      	        	float z = event.values[SensorManager.DATA_Z];  				orientationView.setText("Orientation: " + x + ", " + y + ", " + z); 			}else if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){				float x = event.values[SensorManager.DATA_X];      				float y = event.values[SensorManager.DATA_Y];      	        	float z = event.values[SensorManager.DATA_Z]; 	        	accelerometerView.setText("Accelerometer: " + x + ", " + y + ", " + z); 			}				}		@Override		public void onAccuracyChanged(Sensor sensor, int accuracy) {		}	}		@Override	protected void onPause() {		sensorManager.unregisterListener(sensorEventListener);		super.onPause();	}    }

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