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Merge "Persist screen brightness setting through upgrade"

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This commit is contained in:
Fiona Campbell
2020-12-08 10:07:29 +00:00
committed by Gerrit Code Review
parent e581224c6a 2e8e9d39fe
commit 2a747f002f
1 changed files with 23 additions and 2 deletions
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25
core/java/com/android/internal/BrightnessSynchronizer.java
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@@ -36,7 +36,7 @@ import java.util.Queue;
* (new) system for storing the brightness. It has methods to convert between the two and also
* observes for when one of the settings is changed and syncs this with the other.
*/
public class BrightnessSynchronizer{
public class BrightnessSynchronizer {
private static final int MSG_UPDATE_FLOAT = 1;
private static final int MSG_UPDATE_INT = 2;
@@ -78,6 +78,26 @@ public class BrightnessSynchronizer{
mContext = context;
mBrightnessSyncObserver = new BrightnessSyncObserver(mHandler);
mBrightnessSyncObserver.startObserving();
// It is possible for the system to start up with the int and float values not
// synchronized. So we force an update to the int value, since float is the source
// of truth. Fallback to int value, if float is invalid. If both are invalid, use default
// float value from config.
final float currentFloatBrightness = getScreenBrightnessFloat(context);
final int currentIntBrightness = getScreenBrightnessInt(context);
if (!Float.isNaN(currentFloatBrightness)) {
updateBrightnessIntFromFloat(currentFloatBrightness);
} else if (currentIntBrightness != -1) {
updateBrightnessFloatFromInt(currentIntBrightness);
} else {
final float defaultBrightness = mContext.getResources().getFloat(
com.android.internal.R.dimen.config_screenBrightnessSettingDefaultFloat);
Settings.System.putFloatForUser(mContext.getContentResolver(),
Settings.System.SCREEN_BRIGHTNESS_FLOAT, defaultBrightness,
UserHandle.USER_CURRENT);
}
}
/**
@@ -166,7 +186,8 @@ public class BrightnessSynchronizer{
private static int getScreenBrightnessInt(Context context) {
return Settings.System.getIntForUser(context.getContentResolver(),
Settings.System.SCREEN_BRIGHTNESS, 0, UserHandle.USER_CURRENT);
Settings.System.SCREEN_BRIGHTNESS, PowerManager.BRIGHTNESS_INVALID,
UserHandle.USER_CURRENT);
}
private float mPreferredSettingValue;