Android中ProgressDialog的简单示例

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package test.zxn;

import android.app.Activity;
import android.os.Bundle;
import android.app.ProgressDialog;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class ProcessDialogActivity extends Activity {

private TextView statusTextView;
private Button beginBtn;
private ProgressDialog progressDialog;

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        setContentView(R.layout.main);
        statusTextView = (TextView)findViewById(R.id.status);
        beginBtn = (Button)findViewById(R.id.beginBtn);
        setListener();
    }

private Handler handler = new Handler(){
  public void handleMessage(Message msg)
  {
   progressDialog.dismiss();
   statusTextView.setText("Completed!");
  }
};

private void setListener(){

  beginBtn.setOnClickListener(new View.OnClickListener() {
   @Overridepackage test.zxn;

import android.app.Activity;
import android.os.Bundle;
import android.app.ProgressDialog;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class ProcessDialogActivity extends Activity {

private TextView statusTextView;
private Button beginBtn;
private ProgressDialog progressDialog;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

setContentView(R.layout.main);
statusTextView = (TextView)findViewById(R.id.status);
beginBtn = (Button)findViewById(R.id.beginBtn);
setListener();
}

private Handler handler = new Handler(){
public void handleMessage(Message msg)
{
progressDialog.dismiss();
statusTextView.setText("Completed!");
}
};

private void setListener(){

beginBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
progressDialog = ProgressDialog.show(ProcessDialogActivity.this,
"loading...", "Please wait...", true, false);

new Thread()
{
public void run()
{
Calculation.calculate(4);
handler.sendEmptyMessage(0);
}
}.start();
}
});
}
}
   public void onClick(View v) {
    // TODO Auto-generated method stub
    progressDialog = ProgressDialog.show(ProcessDialogActivity.this,
      "loading...", "Please wait...", true, false);

    new Thread()
    {
     public void run()
     {
      Calculation.calculate(4);
      handler.sendEmptyMessage(0);
     }
    }.start();
   }
  });
}
}

代码地址: ProgressDialogDemo