| 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. |
// 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); Facebook Handler Apk Android 23
Facebook’s API 23 era APK (e.g., v79–v86) likely contained workarounds for these. From analyzing old Facebook APKs, common Handler -related classes include: | // Simplified from com
| Class | Purpose | |-------|---------| | BackgroundExecutor | Uses Handler + ThreadPoolExecutor | | UiThreadUtil | Ensures code runs on main thread via Handler | | FutureHandler | Cancels pending Runnable s | | PriorityExecutor | Orders tasks using Handler with priority queue | @Override public boolean sendMessageAtTime(Message msg
Example decompiled snippet (API 23 era):