The imaginary of Android handler and Looper

if (looper.mylooper () = Looper.getmainlooper ()) {
If we finish marking off of the main thread, we need to
Actually do it in the main thread to ensure correct ordering.
Handler mainthread = new Handler (Looper.getmainlooper ());
Mainthread.post (New Runnable () {
@Override
public void Run () {
Meventlog.add (tag, threadId);
Meventlog.finish (This.tostring ());
}
});
Return

}

Handler inside holds a looper,looper inside holds a message queue MessageQueue

Handler will first post the message to the Looper message queue it holds,

Looper the loop is processed after it gets the message from the message queue

The imaginary of Android handler and Looper