MyWatchFace.java 文件源码

private void registerReceiver() {
    if (mRegisteredTimeZoneReceiver) {
        return;
    }
    mRegisteredTimeZoneReceiver = true;
    IntentFilter filter = new IntentFilter(Intent.ACTION_TIMEZONE_CHANGED);
    MyWatchFace.this.registerReceiver(mTimeZoneReceiver, filter);
}