Android开屏、锁屏、解锁监听实现

实现方式

监听BroadcastReceiver

事件

• Intent.ACTION_SCREEN_ON
• Intent.ACTION_SCREEN_OFF
• Intent.ACTION_USER_PRESENT

权限

监听用户解锁须要在AndroidManifest中注册权限

<uses-permission android:name="android.permission.RECEIVE_USER_PRESENT" />
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具体实现

• 一、建立监听接口

public interface ScreenStatusListener {
    
    void onScreenOn();

    void onScreenOff();
    
    void userPresent()
}
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实现三个方法：开屏、锁屏、解锁

• 二、建立控制工具类

public class ScreenStatusController {

    private Context mContext;
    private IntentFilter mScreenStatusFilter = null;
    private ScreenStatusListener mScreenStatusListener = null;

    public ScreenStatusController(Context context) {
        mContext = context;
        mScreenStatusFilter = new IntentFilter();
        mScreenStatusFilter.addAction(Intent.ACTION_SCREEN_ON);
        mScreenStatusFilter.addAction(Intent.ACTION_SCREEN_OFF);
        mScreenStatusFilter.addAction(Intent.ACTION_USER_PRESENT);
    }
    
    private BroadcastReceiver mScreenStatusReceiver = new BroadcastReceiver(){
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (Intent.ACTION_SCREEN_ON.equals(action)) { // 开屏
                if (mScreenStatusListener != null) {
                    mScreenStatusListener.onScreenOn();
                }
            } else if (Intent.ACTION_SCREEN_OFF.equals(action)) { // 锁屏
                if (mScreenStatusListener != null) {
                    mScreenStatusListener.onScreenOff();
                }
            } else if (Intent.ACTION_USER_PRESENT.equals(action)) { //解锁
                if (mScreenStatusListener != null) {
                    mScreenStatusListener.userPresent();
                }
            }
        }
    };
    
    //设置监听
    public void setScreenStatusListener(ScreenStatusListener l) {
        mScreenStatusListener = l;
    }
    
    
     //开始监听
    public void startListen() {
        if (mContext != null) {
            mContext.registerReceiver(mScreenStatusReceiver, mScreenStatusFilter);
        }
    }

    //结束监听
    public void stopListen() {
        if (mContext != null) {
            mContext.unregisterReceiver(mScreenStatusReceiver);
        }
    }
}
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控制工具主要是实现了广播的注册和回收，并处理广播事件

• 三、在指定位置实现

public class VideoActivity extends Activity{
    private ScreenStatusController mScreenStatusController = null;
     
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
        //TODO
        
        mScreenStatusController = new ScreenStatusController(this);
        mScreenStatusController.setScreenStatusListener(new ScreenStatusController.ScreenStatusListener() {
            @Override
            public void onScreenOn() {
            }

            @Override
            public void onScreenOff() {

            }
            
            @Override
            pubic void userPresent(){
                
            }
        });
        mScreenStatusController.startListen();
        
    }
    
    @Override
    protected void onDestroy() {
    
        mScreenStatusController.stopListen();
        super.onDestroy();
        
    }
}
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在Video主要是实例化控制工具类，并设置监听，同时在onCreate和onDestroy中注册和销毁广播事件。

到此为止，开屏、锁屏、解锁的监听就实现完了。