Android之传感器二

最新推荐文章于 2025-08-08 23:51:41 发布

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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();
	}

    
}

2：

  <?xml version="1.0" encoding="utf-8" ?> 
- <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="cn.itcast.sensor" android:versionCode="1" android:versionName="1.0">
- <application android:icon="@drawable/icon" android:label="@string/app_name">
- <activity android:name=".MainActivity" android:label="@string/app_name">
- <intent-filter>
  <action android:name="android.intent.action.MAIN" /> 
  <category android:name="android.intent.category.LAUNCHER" /> 
  </intent-filter>
  </activity>
  </application>
  <uses-sdk android:minSdkVersion="7" /> 
  </manifest>