Android updates the UI in a non-UI thread

Android updates the UI in a non-UI thread

When updating the UI (Program Interface) in a non-UI thread, the following exception occurs:

So how can we refine the UI in a non-UI thread?

There are many methods. Here we mainly introduce two methods:

First, add logoff. prepare (); and logoff. loop (); after the code line to update the UI. For example:

New Thread () {@ Overridepublic void run () {// TODO Auto-generated method stubtxtRotation. setText ("update the UI in a non-UI Thread! "); Lorule. prepare (); lorule. loop () ;}}. start ();

Method 2: Use the following method:

new Thread(){@Overridepublic void run() {// TODO Auto-generated method stubshowToastByRunnable(MainActivity.this, "", 3000);}}.start();

/*** Use Toast * @ param context * @ param text in a non-UI thread to display the message content * @ param duration the message display time **/private void showToastByRunnable (final Context context, final CharSequence text, final int duration) {Handler handler = new Handler (logoff. getMainLooper (); handler. post (new Runnable () {@ Override public void run () {Toast. makeText (context, text, duration ). show ();}});}