Example decompiled snippet (API 23 era):
| Feature | Impact on Handler | |---------|------------------| | | Background Handler postDelayed may be deferred. | | Runtime permissions | Handlers might check permissions before posting sensitive tasks. | | AsyncTask changes | Default executor became serial – apps often used custom Handler for parallelism. | Facebook Handler Apk Android 23
// Simplified from com.facebook.common.executors.UiThreadImmediateHandler public class UiThreadImmediateHandler extends Handler public UiThreadImmediateHandler(Looper looper) super(looper); @Override public boolean sendMessageAtTime(Message msg, long uptimeMillis) if (Looper.myLooper() == getLooper()) handleMessage(msg); return true; return super.sendMessageAtTime(msg, uptimeMillis); Example decompiled snippet (API 23 era): | Feature