ANDROID APP

วิดเจ็ตอื่นๆ: จากการใช้ปุ่มมาถึงการใช้ Seek Bar
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public class HandlerUpdateUi extends Activity {
private static ProgressBar m_progressBar; //UI reference
int percent_done = 0;
final Handler mHandler = new Handler();
// Create runnable for posting results to the UI thread
final Runnable mUpdateResults = new Runnable() {
public void run() {
m_progressBar.setProgress(percent_done);
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
m_progressBar = (ProgressBar) findViewById(R.id.ex_progress_bar);
}
Button actionButton = (Button) findViewById(R.id.action);
actionButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
do_work();
}
});
//example of a computationally intensive action with UI updates
private void do_work() {
Thread thread = new Thread(new Runnable() {
public void run() {
percent_done = 0;
mHandler.post(mUpdateResults);
computation(1);
percent_done = 50;
mHandler.post(mUpdateResults);
}
computation(2);
percent_done = 100;
mHandler.post(mUpdateResults);
}
});
thread.start();
final static int SIZE=1000; //large enough to take some time
double tmp;