1-AIII-Service实现开屏跳转到指定Activity

public class ScreenService extends Service {
    private static final String TAG = "ScreenService";
    private ScreenReceiver receiver;

    @Override
    public IBinder onBind(Intent intent) {
        Log.i(TAG, "onBind");
        return null;
    }

    @Override//当服务第一次启动的时候调用
    public void onCreate() {//在这个方法里面注册广播接收者
        receiver = new ScreenReceiver();//[1]获取ScreenReceiver实例
        IntentFilter filter = new IntentFilter(); //[2]创建IntentFilter对象
        filter.addAction("android.intent.action.SCREEN_OFF");//[3]添加注册的事件
        filter.addAction("android.intent.action.SCREEN_ON");
        registerReceiver(receiver, filter);//[4]通过代码的方式注册
        super.onCreate();
    }

    @Override//当服务销毁的时候调用
    public void onDestroy() {
        unregisterReceiver(receiver);//当actvivity销毁的时候  取消注册广播接收者
        super.onDestroy();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.i(TAG, "onStartCommand");
        return super.onStartCommand(intent, flags, startId);
    }
}

public class ScreenReceiver extends BroadcastReceiver {

    private static final String TAG = "ScreenReceiver";
    @Override
    public void onReceive(Context context, Intent intent) {
        //[1]获取到当前广播的事件类型
        String action = intent.getAction();
        //[2]对当前广播事件类型做一个判断
        if ("android.intent.action.SCREEN_OFF".equals(action)) {
            Log.i(TAG, "屏幕锁屏了");
        } else if ("android.intent.action.SCREEN_ON".equals(action)) {
            //每次开屏跳转到指定页面
            context.startActivity(new Intent(context, MainActivity.class));
            Log.i(TAG, "屏幕解锁了");
        }
    }
}

<service android:name=".base.ScreenService"/>

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        startService(new Intent(this, ScreenService.class));
    }
}