java - Android HandlerThread 在没有 UiHandler 的情况下更新 UI

Question

此代码工作正常并更新我的“TextView”并显示“Toast”这就是我的头痛，因为我试图传递一个可运行的对象，而不包含我的 UiHandler，因为它应该是更新我的 UI 线程的桥梁，但我的 Activity 已更新，没有任何错误??????这不应该是 CustomHandlerThread 应该是一个不同的线程

为什么会发生这种情况？

My Activity

公共(public)类 TestActivity 扩展 BaseActivity {

Runnable task;
@BindView(R.id.send_test_message)
Button send_test_message;
private Handler mUiHandler = new Handler();
private MyWorkerThread mWorkerThread;

@Override
public void initViews() {

}

@Override
public void attachViewsListeners() {

}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.test_activity);
    ButterKnife.bind(this);

    task = new Runnable() { ///this is normally work I have no problem with 
                            ///that 
        @Override
        public void run() {

                mUiHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        send_test_message.setText("Change--->1");
                    }
                });

            }


    };


}


@Override
protected void onStart() {
    super.onStart();
    mWorkerThread = new MyWorkerThread("myWorkerThread");
    mWorkerThread.start();
    mWorkerThread.prepareHandler();
    mWorkerThread.postTask(task);

    mWorkerThread.postTask(new Runnable() {  /// why this task work with no 
                                            ///error  ?
        @Override
        public void run() {
            send_test_message.setText("Change--->2");
        }
    });
}

@Override
protected void onDestroy() {
    mWorkerThread.quit();
    super.onDestroy();
}

my HandlerThread

//MyWorkerThread.java
public class MyWorkerThread extends HandlerThread {

    Handler mWorkerHandler;

    public MyWorkerThread(String name) {
        super(name);
    }

    public void postTask(Runnable task) {
        mWorkerHandler.post(task);
    }

    public void prepareHandler() {

    mWorkerHandler = new Handler(getLooper());

Log.e("MyWorkerThread--->",Looper.myLooper().getThread().getName()); //-->main
Log.e("MyWorkerThread--->",getLooper().getThread().getName());//-->//myWorkerThread
Log.e("MyWorkerThread--->",Thread.currentThread().getName()); //-->main

    }
}

我关注了这个link作为引用

是我的线程运行在MainThread上还是getLooper()初始化我的 HandlerThread 和 MainThread Looper ，那些日志消息是真的

请照亮我

Answer 1

After fill day of debugging i Found out That if i post A Runnable to my mWorkerThread with sleep() as here i got " Only the original thread that created a view hierarchy can touch its views." as should be.. but until I know why it not works without it I wish it would help some one.

   try {
                        TimeUnit.SECONDS.sleep(2);
                        send_test_message.setText("Change--->");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }