AlertDialog.Builder - a simple way to create AlertDialog

eg.

package com.android.coding.HelloWorld;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class HelloWorld extends Activity {
 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.main);
  
     Button button = (Button)findViewById(R.id.button);
     button.setOnClickListener(new Button.OnClickListener(){

  @Override
  public void onClick(View v) {
   // TODO Auto-generated method stub
   new AlertDialog.Builder(HelloWorld.this)
         .setTitle("AlertDialog").setMessage("Hello!")
         .setPositiveButton("OK",
          new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int which) {
           }
           }).show();
  }});
 }
}

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