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POHow to make multi-thread code in Android?
 

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  1. POHow to make multi-thread code in Android?
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    <p>I want to make a multi-thread program, and below is my trial. But only thread2 works. And if I comment out thread2 part, then thread1 can work. How to make them work simultaneously? Thanks!</p> <pre><code>import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.app.Activity; import android.view.Menu; import android.widget.EditText; public class MainActivity extends Activity { private EditText edittext1, edittext2; volatile boolean bThreadRun = false; MyThread1 myThread1; MyThread2 myThread2; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); edittext1 = (EditText) findViewById(R.id.EditText1); edittext2 = (EditText) findViewById(R.id.EditText2); edittext1.setText("this is thread1"); edittext2.setText("this is thread2"); } @Override protected void onStart() { super.onStart(); myThread1 = new MyThread1(); myThread1.start(); myThread2 = new MyThread2(); myThread2.start(); bThreadRun = true; } @Override protected void onPause() { super.onPause(); bThreadRun = false; // myThread.stop(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } private Handler mHandler1 = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { case 1: updateEditText1(); break; } }; }; private Handler mHandler2 = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { case 2: updateEditText2(); break; } }; }; public void updateEditText1() { edittext1.append("thread1\n"); } public void updateEditText2() { edittext2.append("thread2\n"); } public class MyThread1 extends Thread { public MyThread1() { } @Override public void start() { super.start(); } @Override public void run() { while (bThreadRun) { try { sleep(500); Message message = new Message(); message.what = 1; mHandler1.sendMessage(message); } catch (InterruptedException ex) { } } } } public class MyThread2 extends Thread { public MyThread2() { } @Override public void start() { super.start(); } @Override public void run() { while (bThreadRun) { try { sleep(500); Message message = new Message(); message.what = 2; mHandler2.sendMessage(message); } catch (InterruptedException ex) { } } } } } </code></pre>
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