In the code showed as below i create a process dialog for doing some long
operation (in this case waiting
4 seconds)... It runs as it should. And shows the "Starting..." and "Done"
message but when it finishes
and i click Button1 again it terminates. What am i doing wrong?
----- code -----
public class main extends Activity {
public ProgressDialog dialog = null;
final Handler handler = new Handler(){
public void handleMessage(Message msg){
dialog.dismiss();
TextView tv2 = (TextView) findViewById(R.id.TextView02);
tv2.setText("Done");
}
};
Thread runlongjob = new Thread(){
public void run(){
SystemClock.sleep(4000);
handler.sendEmptyMessage(0);
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void clickhandler(View v){
switch(v.getId()){
case (R.id.Button01):
TextView tv1 = (TextView) findViewById(R.id.TextView01);
tv1.setText("Starting...");
dialog = ProgressDialog.show(main.this, "Please wait", "Doing Job...",
true);
runlongjob.start();
break;
}
}
}
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