How to test low-bit ambient and burn-in protection when making watch faces?

How to test low-bit ambient and burn-in protection when making watch faces?

By : user2955811
Date : November 22 2020, 10:48 AM
hop of those help? You will receive information about burn in protection and low ambient through WatchFaceService.Engine.onPropertiesChanged callback. For example:
code :
    public void onPropertiesChanged(Bundle properties) {
        mLowBitAmbient = properties.getBoolean(PROPERTY_LOW_BIT_AMBIENT, false);
        boolean burnInProtection = properties.getBoolean(PROPERTY_BURN_IN_PROTECTION, false);
        mHourPaint.setTypeface(burnInProtection ? NORMAL_TYPEFACE : BOLD_TYPEFACE);
        if (Log.isLoggable(TAG, Log.DEBUG)) {
            Log.d(TAG, "onPropertiesChanged: low-bit ambient = " + mLowBitAmbient);
    mLowAmbient = true;
    boolean burnInProtection = true;

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Burn in protection for android wear

Burn in protection for android wear

By : user5215553
Date : March 29 2020, 07:55 AM
this will help The watch will automatically move the image around - what you need to do is make sure the movement will be enough to prevent burn in. If you have, for example, a large hour hand, the burn in protection will kick in and move it a bit - but because of it's size, some of the pixels won't change (eg. from white to black), and therefore places burn in may be likely to occur.
Code example for android-wear watch using AlarmManager to update in ambient mode?

Code example for android-wear watch using AlarmManager to update in ambient mode?

By : Cameron Williams
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have developed an Android watch face that also needed to run a method periodically (e.g. every hour). At first a handler seemed to be a good solution, but it stops working when the Android Wear device goes to sleep. Then, I came across the article Keeping Your App Visible and the section "Update Content in Ambient Mode". However, it is not that easy to understand how it applies to watch faces. The solution described here is enabling a periodic update on the watch face, even when the Android Wear device goes to sleep.
Start by adding the following fields to your watch face:
code :
 * Action for the update in ambient mode, per our custom refresh cycle.
private static final String UPDATE_ACTION = "your.package.action.UPDATE";
 * Milliseconds between waking processor/screen for updates
private static final long UPDATE_RATE = TimeUnit.MINUTES.toMillis(30);
private AlarmManager mUpdateAlarmManager;
private PendingIntent mUpdatePendingIntent;
private BroadcastReceiver mUpdateBroadcastReceiver;
public Engine onCreateEngine() {

    /* Set an AlarmManager. The AlarmManager calls itself again in the end for a periodic update. */
    mUpdateAlarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

    Intent ambientUpdateIntent = new Intent(UPDATE_ACTION);

    mUpdatePendingIntent = PendingIntent.getBroadcast(
            getApplicationContext(), 0, ambientUpdateIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    mUpdateBroadcastReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            Log.d(this.getClass().getName(), "Broadcast received!");
    IntentFilter filter = new IntentFilter(UPDATE_ACTION);
    registerReceiver(mUpdateBroadcastReceiver, filter);


    return new Engine();
 * Schedule the next alarm that will call onReceive of the BroadcastReceiver.
private void scheduleNewAlarm() {
    // Calculate the next trigger time
    long triggerTimeMs = System.currentTimeMillis() + UPDATE_RATE;
public void onDestroy() {
    // take care of the AlarmManager periodic update
How to detect when android wear watch face is going to enter ambient mode?

How to detect when android wear watch face is going to enter ambient mode?

By : joeUS
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I am trying to trigger some actions on an Android Wear watch face right before it goes into Ambient Mode. For activities, there is the onEnterAmbient() overrideable method, but I believe this is not the case for wallpaper services. , Edited.
On the CanvasWatchFaceService:
Detect when burn-in protection has activated?

Detect when burn-in protection has activated?

By : Karthik
Date : March 29 2020, 07:55 AM
this will help In an activity, extend WearableActivity and override onEnterAmbientMode, you have in parameter a Bundle where you can retrieve the property wanted. (check this WearableActivity)
What is low bit ambient mode in watch?

What is low bit ambient mode in watch?

By : Jey
Date : March 29 2020, 07:55 AM
wish help you to fix your issue The best explanation I've seen is from the Reduced color space section of this page:
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