How to access the android UI thread from other threads

Android offers several ways to access the UI thread from other threads. You may already be familiar with some of them but here is a comprehensive list:

• Activity.runOnUiThread(Runnable)
• View.post(Runnable)
• View.postDelayed(Runnable, long)
• Handler

When using a handler, you can pass a single object as part of the Message to the Handler using msg.obj field.

Source: http://developer.android.com/resources/articles/painless-threading.html