How can I brighten the screen when opening an Activity in my Glass GDK immersion application?

android, google-gdk, google-glass

Solution

I was able to find a solution by acquiring a `SCREEN_BRIGHT_WAKE_LOCK` with the `ACQUIRE_CAUSES_WAKEUP` flag in `onResume`. For example:

PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "My Tag");
wl.acquire();
//..screen will stay on during this section..
wl.release();

Problem

I have a GDK immersion application, where the launcher `Activity` acquires a`SCREEN_DIM_WAKE_LOCK WakeLock`. The app also has a Service which will receive chat messages and starts an `Intent` for an `Activity` to display each one. Whenever the message `Activity` is opened, I want to brighten the screen. However, all of the methods I have found do not seem to work. For example, adding the following into `onResume` has no effect: ``` Settings.System.putInt(getContentResolver(), SCREEN_BRIGHTNESS_MODE, SCREEN_BRIGHTNESS_MODE_MANUAL); WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.screenBrightness = 1.0f; getWindow().setAttributes(lp); ``` To better illustrate the problem, here is the sequence of events in my app: - Activity A starts and acquires a SCREEN_DIM_WAKE_LOCK. Activity A dims after a short time. - Service B receives a chat message over the network and creates an Intent for Activity C - Activity C opens, sets the screen brightness as shown above, but remains dimmed How can I get the screen to brighten?

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