Android开发实现AlertDialog中View的控件设置监听功能分析

package com.example.mydialog;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Toast;
/**
 * @author 郑明亮
 * @date 2015-11-4 下午1:57:31
 * @version 1.0
 */
public class secondActivity extends Activity implements OnClickListener {
  Button btshow,bt_emial,bt_blog;
  ImageButton btcancel;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.second);
    final AlertDialog dialog=new AlertDialog.Builder(secondActivity.this).create();
    dialog.show();
    dialog.getWindow().setContentView(R.layout.myxml);//重点看这获取弹出框内的视图view
    // btshow=(Button) findViewById(R.id.bt_show);
    btcancel = (ImageButton) dialog.findViewById(R.id.bt_cancel);//重点看这行的Dialog
    bt_blog=(Button) dialog.findViewById(R.id.bt_blog);
    bt_emial=(Button) dialog.findViewById(R.id.bt_email);
     bt_blog.setOnClickListener(this);
     bt_emial.setOnClickListener(this);
    btcancel.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View arg0) {
      dialog.dismiss();
      Toast.makeText(secondActivity.this, "clicked", 0).show();
      Log.e("log", "click");
    }
     });
  }
  @Override
  public void onClick(View arg0) {
    switch (arg0.getId()) {
    case R.id.bt_blog:
      Uri uri = Uri.parse("https://www.jb51.net");
      Intent it = new Intent(Intent.ACTION_VIEW, uri);
      startActivity(it);
      break;
    case R.id.bt_email:
      Uri uri1 = Uri.parse("https://www.jb51.net");
      Intent it1 = new Intent(Intent.ACTION_VIEW, uri1);
      startActivity(it1);
      break;
    default:
      break;
    }
  }
}