Android 自定义对话框

package com.example.diydialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
    public void btn_dialog(View v){
        AlertDialog.Builder builder=new AlertDialog.Builder(this);
        builder.setTitle("用户登录");
        builder.setIcon(R.drawable.ic_launcher);
        final View view=getLayoutInflater().inflate(R.layout.login, null);
        builder.setView(view);
        
        builder.setPositiveButton("登录",new OnClickListener() {
            
            @Override
            public void onClick(DialogInterface arg0, int arg1) {
                // TODO 自动生成的方法存根
                EditText ed1= (EditText) view.findViewById(R.id.editText1);
                EditText ed2=(EditText) view.findViewById(R.id.editText2);
                String ed11=ed1.getText().toString();
                String ed22=ed2.getText().toString();
                Toast.makeText(MainActivity.this,ed11+"---"+ed22, Toast.LENGTH_SHORT).show();
            }
        });
        
        builder.setNegativeButton("取消", new OnClickListener() {
            
            @Override
            public void onClick(DialogInterface arg0, int arg1) {
                // TODO 自动生成的方法存根
                Toast.makeText(MainActivity.this,"已经取消", Toast.LENGTH_SHORT).show();
            }
        });
        builder.show();
    }
    
}