Android监听按键锁屏广播

Posted 2022-05-19 zhangjin1120

目录

• java版
• kotlin版本

java版

不需要xml代码，直接java代码注册就好。

public class MainActivity extends AppCompatActivity 
    private static final String TAG = "MainActivity";
    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final IntentFilter filter = new IntentFilter();
        // 屏幕灭屏广播
        filter.addAction(Intent.ACTION_SCREEN_OFF);
        // 屏幕亮屏广播
        filter.addAction(Intent.ACTION_SCREEN_ON);

        BroadcastReceiver mScreenInfoReceiver = new BroadcastReceiver() 
            @Override
            public void onReceive(final Context context, final Intent intent) 
                Log.d(TAG, "onReceive");
                String action = intent.getAction();

                if (Intent.ACTION_SCREEN_ON.equals(action)) 
                    Log.d(TAG, "screen on");
                 else if (Intent.ACTION_SCREEN_OFF.equals(action)) 
                    Log.d(TAG, "screen off");
                
            
        ;
        registerReceiver(mScreenInfoReceiver, filter);
    

按锁屏键，测试效果：

kotlin版本

class MainActivity : AppCompatActivity() 
    companion object 
        private const val TAG = "MainActivity"
    

    class ScreenReceiver : BroadcastReceiver() 

        override fun onReceive(context: Context, intent: Intent) 
            Log.d(TAG, "onReceive: ")
            var action = intent.getAction()
            if (Intent.ACTION_SCREEN_ON.equals(action)) 
                Log.d(TAG, "screen on")
             else if (Intent.ACTION_SCREEN_OFF.equals(action)) 
                Log.d(TAG, "screen off")
            
        
    


    override fun onCreate(savedInstanceState: Bundle?) 
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val filter = IntentFilter()
        filter.addAction(Intent.ACTION_SCREEN_OFF)
        filter.addAction(Intent.ACTION_SCREEN_ON)
        var receiver = ScreenReceiver()
        registerReceiver(receiver, filter)
    

按锁屏键，测试效果：