使用PowerManager.WakeLock類可以執(zhí)行此操作。請參見以下代碼：

import android.os.PowerManager;

public class MyActivity extends Activity {

    protected PowerManager.WakeLock mWakeLock;

    /** Called when the activity is first created. */

    @Override

    public void onCreate(final Bundle icicle) {

        setContentView(R.layout.main);

        /* This code together with the one in onDestroy() 

         * will make the screen be always on until this Activity gets destroyed. */

        final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);

        this.mWakeLock = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");

        this.mWakeLock.acquire();

    }

    @Override

    public void onDestroy() {

        this.mWakeLock.release();

        super.onDestroy();

    }

}

在清單文件中使用以下權(quán)限：

<uses-permission android:name="android.permission.WAKE_LOCK" />

希望這能解決您的問題... :)

在onCreate（）中的setContentView（）之后添加一行代碼

public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_flag);

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

}