Question

How do you get the current screen brightness of your activity?

Following method works fine for setting the brightness to max by calling setBrightness(100):

private void setBrightness(int brightness) {
    WindowManager.LayoutParams layoutParams = getWindow().getAttributes();
    layoutParams.screenBrightness = brightness/100.0f;
    getWindow().setAttributes(layoutParams);
}

Im trying to achieve the following:

1. Start the activity and save the current brightness value
2. Set brightness to max
3. Reset brightness to the initial value on certain events

Many thanks!

Answer 1

Try

int curBrightnessValue = android.provider.Settings.System.getInt(getContentResolver(), android.provider.Settings.System.SCREEN_BRIGHTNESS);

and then

   WindowManager.LayoutParams layoutParams = getWindow().getAttributes();
    layoutParams.screenBrightness = curBrightnessValue/100.0f;
    getWindow().setAttributes(layoutParams);