Android Threading Example

Question

I want a simple example of creating threads and calling threads in android.

Answer 1

This is a good tutorial:

http://android-developers.blogspot.de/2009/05/painless-threading.html

Or this is for user interface thread:

http://developer.android.com/guide/faq/commontasks.html#threading

Or here is very practical:

http://www.androidacademy.com/1-tutorials/43-hands-on/115-threading-with-android-part1

and the other is about procceses and threads

http://developer.android.com/guide/components/processes-and-threads.html

Answer 2

One of the powerful features of Androids is the AsyncTask class.

To work with it, you must first expand it and override doInBackground (...). doInBackground automatically executed in the doInBackground , and you can add some listeners in the user interface thread to receive notification of the status update, these functions: onPreExecute() , onPostExecute() and onProgressUpdate()

You can find an example here.

Refer to the following post for other alternatives:

Handler vs AsyncTask vs Thread

Answer 3

Here is a simple thread example for Android. It is very simple, but it should help you get a perspective.

Android code - Main.java

 package test12.tt; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class Test12Activity extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); final TextView txt1 = (TextView) findViewById(R.id.sm); new Thread(new Runnable() { public void run(){ txt1.setText("Thread!!"); } }).start(); } } 

Xml android application - main.xml

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:id = "@+id/sm" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello"/> </LinearLayout>