android 进度对话框的使用

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;

public class MyActivityTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setTitle("提示");
progressDialog.setMessage("正在加载....");
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setMax(100);
progressDialog.show();

new Thread(new Runnable() {
@Override
public void run() {
for (int i = 1; i <= 100; i++) {
progressDialog.setProgress(i);
try {
Thread.sleep(20);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
progressDialog.dismiss();
}
}).start();
}
}