文件名称：Android通过距离传感器控制屏幕熄灭案例代码
文件大小：1.43MB
文件格式：RAR
更新时间：2021-05-01 10:32:07
Android
public class MainActivity extends Activity implements SensorEventListener{ public static final String TAG = "SensorTest"; private SensorManager sensorManager; private TextView tv; private PowerManager localPowerManager = null;// 电源管理对象 private WakeLock localWakeLock = null;// 电源锁 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE); tv = (TextView) findViewById(R.id.tv); localPowerManager = (PowerManager) getSystemService(POWER_SERVICE); // 获取PowerManager.WakeLock对象,后面的参数|表示同时传入两个值,最后的是LogCat里用的Tag localWakeLock = this.localPowerManager.newWakeLock(32, "hahaha");// 第一个参数为电源锁级别，第二个是日志tag } @Override protected void onResume() { sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY), SensorManager.SENSOR_DELAY_UI); super.onResume(); } @Override protected void onPause() { sensorManager.unregisterListener(this); super.onPause(); } @Override public void onSensorChanged(SensorEvent event) { // TODO Auto-generated method stub float[] values = event.values; switch (event.sensor.getType()) { case Sensor.TYPE_PROXIMITY: tv.setText(values[0] + ""); if (values[0] == 0.0) {// 贴近手机 System.out.println("hands up"); Log.d(TAG, "hands up in calling activity"); if (localWakeLock.isHeld()) { return; } else { localWakeLock.acquire();// 申请设备电源锁 } } else {// 远离手机 System.out.println("hands moved"); Log.d(TAG, "hands moved in calling activity"); if (localWakeLock.isHeld()) { return; } else { localWakeLock.setReferenceCounted(false); localWakeLock.release(); // 释放设备电源锁 } break; } } }
【文件预览】：
Android通过距离传感器控制屏幕熄灭
----5.5通过距离传感器控制屏幕熄灭()
--------bin()
--------res()
--------proguard-project.txt(781B)
--------ic_launcher-web.png(50KB)
--------assets()
--------gen()
--------.settings()
--------src()
--------.project(878B)
--------.classpath(475B)
--------project.properties(563B)
--------AndroidManifest.xml(989B)
--------libs()