我正在制作一个闹钟应用程序。
当警报响起时,我会启动一个带有视频的活动。
如果我的屏幕未锁定,则会弹出“活动”并播放视频,但当屏幕锁定时,它只播放音频并打开屏幕。当我手动解锁屏幕时,活动将被取消。
理想情况下,它会通过锁屏显示活动,因此视频即时性弹出。
这是该活动最重要的部分(它从服务开始)
public class AlarmScreen extends Activity {
private PowerManager.WakeLock mWakeLock;
private AudioManager audio;
private static final int WAKELOCK_TIMEOUT = 60 * 1000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_alarm_screen);
btnDismiss.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
//play video
//getWindow().setFormat(PixelFormat.TRANSLUCENT);
//if you want the controls to appear
// videoHolder.setMediaController(new MediaController(this));
Uri video = Uri.parse("android.resource://" + getPackageName() + "/"
+ R.raw.video1small);
videoViewAlarm.setVideoURI(video);
videoViewAlarm.start();
//Ensure wakelock release
Runnable releaseWakelock = new Runnable() {
@Override
public void run() {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
if (mWakeLock != null && mWakeLock.isHeld()) {
mWakeLock.release();
}
}
};
new Handler().postDelayed(releaseWakelock, WAKELOCK_TIMEOUT);
}
@SuppressWarnings("deprecation")
@Override
protected void onResume() {
super.onResume();
// Set the window to keep screen on
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
// Acquire wakelock
PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
if (mWakeLock == null) {
mWakeLock = pm.newWakeLock((PowerManager.FULL_WAKE_LOCK | PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP), TAG);
}
if (!mWakeLock.isHeld()) {
mWakeLock.acquire();
Log.i(TAG, "Wakelock aquired!!");
}
}
@Override
protected void onPause() {
super.onPause();
if (mWakeLock != null && mWakeLock.isHeld()) {
mWakeLock.release();
}
finish();
}
}
我的日志:
11-02 16:27:00.430 9977-9977/be.thomascbeerten.yomommaoclock D/AlarmScreen﹕ onCreate
11-02 16:27:00.450 9977-9977/be.thomascbeerten.yomommaoclock D/AlarmScreen﹕ Starting video
11-02 16:27:00.460 9977-9977/be.thomascbeerten.yomommaoclock D/AlarmScreen﹕ onResume
11-02 16:27:00.460 9977-9977/be.thomascbeerten.yomommaoclock I/AlarmScreen﹕ Wakelock aquired!!
11-02 16:27:00.470 9977-9977/be.thomascbeerten.yomommaoclock D/AlarmScreen﹕ OnPause
11-02 16:27:00.940 9977-9977/be.thomascbeerten.yomommaoclock I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@42c1e128 time:28154499
11-02 16:27:01.000 9977-9977/be.thomascbeerten.yomommaoclock D/MediaPlayer﹕ getMetadata
11-02 16:27:13.670 9977-9989/be.thomascbeerten.yomommaoclock W/MediaPlayer﹕ info/warning (3, 0)
11-02 16:27:13.690 9977-9977/be.thomascbeerten.yomommaoclock D/AlarmScreen﹕ onResume
11-02 16:27:13.690 9977-9977/be.thomascbeerten.yomommaoclock I/AlarmScreen﹕ Wakelock aquired!!
更新
我在这里发现了一个关于同样的问题:Why the onPause method is called immediately after onCreate
我注意到onpause被调用了,所以我会在那里找到我的答案!
然而,亚伯拉罕·菲利普的回答却是一个重要的谜团!
最佳答案
你试过了吗:
KeyguardManager km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
final KeyguardManager.KeyguardLock kl = km .newKeyguardLock("MyKeyguardLock");
kl.disableKeyguard();
你想在哪里打开屏幕?
如果你是这样的话:
@SuppressWarnings("deprecation")
@Override
protected void onResume() {
super.onResume();
// Set the window to keep screen on
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
//New code
KeyguardManager km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
final KeyguardManager.KeyguardLock kl = km .newKeyguardLock("MyKeyguardLock");
kl.disableKeyguard();
// Acquire wakelock
PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
if (mWakeLock == null) {
mWakeLock = pm.newWakeLock((PowerManager.FULL_WAKE_LOCK | PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP), TAG);
}
if (!mWakeLock.isHeld()) {
mWakeLock.acquire();
Log.i(TAG, "Wakelock aquired!!");
}
}