Need help,Screen didn't turn on after I change Activity's theme
I'm making my alarm app. There is an Activity to show alarm infomation. I want turn on the screen and unlock it. I wrote these code
AlarmActivity.java:
public class AlarmActivity extends Activity {
......
void onCreate(Bundle bl) {
.....
final Window win = getWindow();
win.requestFeature(android.view.Window.FEATURE_NO_TITLE);
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
| WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
LayoutInflater inflater = LayoutInflater.from(this);
setContentView(inflater.inflate(R.layout.alarm, null));
}
......
}
AndroidManifest.xml
{activity android:name="AlarmTaskActivity"
android:excludeFromRecents="true"
android:theme="@android:style/Theme.Wallpaper.NoTitleBar"
android:launchMode="singleInstance"
android:taskAffinity=""
android:configChanges="orientation|keyboardHidden|keyboard|navigation"/}
It's ok,but when I change
android:theme="@android:style/Theme.Wallpaper.NoTitleBar" to android:theme="@android:style/Theme.Dialog" the screen did not turn on nor unlock, I am really confused....
Can you please tell me how to make the screen turn on and unlock when I use "@android:style/Theme.Dialog"?
Thanks
by the way,I have android 2.0 in my test device.
In order to activate the screen and force it to stay on, you need to use a WakeLock. See the documentation for more information. Changing the theme along won't cause the screen to wake up. You'll need to use the ACQUIRE_CAUSES_WAKEUP flag in order to do that.
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