效果：

java代码

package com.example.dialogdemo;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button btnShow = (Button) findViewById(R.id.btn_show);

btnShow.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// 载入xml文件的布局

LayoutInflater lf = (LayoutInflater) MainActivity.this

.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

ViewGroup vg = (ViewGroup) lf.inflate(R.layout.layout_view,

null);

final EditText etShow = (EditText) vg

.findViewById(R.id.et_show);

new AlertDialog.Builder(MainActivity.this)

.setView(vg)

.setTitle("标题")

.setPositiveButton("确定",

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog,

int which) {

String str = etShow.getText()

.toString();

System.out.println("str--->" + str);

}

}).setNeutralButton("忽略", null)

.setNegativeButton("取消", null).show();

}

});

}

@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;

}

}

需要加载的xml文件

android:layout_width="match_parent"

android:layout_height="match_parent" >

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerHorizontal="true"

android:layout_centerVertical="true" >

android:layout_margin="5dp"

android:text="姓名" />

android:id="@+id/et_show"

android:layout_width="100dp"

android:layout_margin="5dp"

android:inputType="text" />