Events and the UI Thread in Android | 612

在android中系统不允許在非Main Thread更新UI。當我們在非主線程做了耗時操作後，需要去更新UI的時候，我們就需要使用Handler來執行更新操作。

利用Activity.runOnUiThread(Runnable)把更新ui的代码创建在Runnable中，然后在需要更新ui时，把这个Runnable对象传给Activity.runOnUiThread(Runnable)。

All components that run in the same process are instantiated in the UI thread, and system calls to each component are dispatched from that ...

Runs the specified action on the UI thread. If the current thread is the UI thread, then the action is executed immediately. If the current thread is not the UI ...

In this blog post, I will try to shed some light on what is actually going on inside runOnUiThread() and (hopefully) ruin the magic.

To help developers easy to communicate with the main thread from a background thread, Android offers several methods: Activity.runOnUiThread( ...

The difference between the first and the second is that if you happen to be on the main application thread when executing the code, the first one ( ...

runOnUiThread()是Activity类中的方法，它用于从子线程中切换到主线程来执行一些操作。相比于通过显示使用Handler，重写AsyncTask方法来说， ...

User Interface Thread or UI-Thread in Android is a Thread element responsible for updating the layout elements of the application implicitly or explicitly.

Fundamentally, Handlers and Loopers is the base mechanism for communication between threads in Android OS, all other async tools that post ...