AlertDialog生成的对话框可分为4个区域：图标区，标题区，内容区，按钮区 结构如图：  AlertDialog对话框的使用： 1，**创建AlertDialog.Builder对象** 2，调用Builder对象的**setTitle()设置标题，setIcon设置图标** 3，调用Builder对象的相关方法**设置内容**，AlertDialog提供如下六中设置指定对话框的内容： setMessage()；设置简单文本框的内容 setItems()；设置简单列表的内容，数组 setSingleChoiceItems()；；设置单选列表的内容，内容参数可以是数组Cursor，ListAdapter setMultiChoiceItems()；设置多选列表项的内容，内容参数可以是数组，Cursor setAdapter();设置内容，内容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter setView();设置内容，参数是自定义的View 4，调用Builder对象的**setPositiveButton()和 setNegativeButton()设置按钮和监听器** 5，调用Builder对象的**create()方法**创建AlertDialog对象，再调用AlertDialog对象的**show()方法**显示对话框 总之：调用Builder对象设置图标，标题，内容，按钮，在create()，show() 代码模板： ~~~ new AlertDialog.Builder(this) // 设置对话框标题 .setTitle("简单对话框") // 设置图标 .setIcon(R.drawable.tools) //设置内容，可代替 .setMessage("对话框的测试内容\n第二行内容").setPositiveButton("确定"，listener).setNegativeButton("取消",listener).create().show(); ~~~ acitivity_main.xml ~~~ <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/root" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="TextView" /> <TableLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TableRow android:id="@+id/tableRow1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="simple" android:text="简单文本" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="simpleList" android:text="数组列表" /> <Button android:id="@+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="singleChoice" android:text="单选列表" /> </TableRow> <TableRow android:id="@+id/tableRow2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center_horizontal" > <Button android:id="@+id/button4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="multiChoice" android:text="多选列表" /> <Button android:id="@+id/button5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="customList" android:text="自定义列表" /> <Button android:id="@+id/button6" android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="customView" android:text="自定义View" /> </TableRow> </TableLayout> </LinearLayout> ~~~  MainActivity.java ~~~ package com.hust.alertdialogtest; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.DialogInterface.OnMultiChoiceClickListener; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.ArrayAdapter; import android.widget.TableLayout; import android.widget.TextView; /*AlertDialog对话框的使用： * AlertDialog对话框有四个区域：图标区，标题区，内容区，按钮区 * 1，创建AlertDialog.Builder对象 * 2，调用Builder对象的setTitle()设置标题，setIcon设置图标 * 3，调用Builder对象的相关方法设置内容 * setMessage()；设置简单文本框的内容 * setItems()；设置简单列表的内容，数组 * setSingleChoiceItems()；；设置单选列表的内容，内容参数可以是数组，Cursor，ListAdapter * setMultiChoiceItems()；设置多选列表项的内容，内容参数可以是数组，Cursor * setAdapter();设置内容，内容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter * setView();设置内容，参数是自定义的View * 4，调用Builder对象的setPositiveButton()和 setNegativeButton()设置按钮和监听器 * 5，调用Builder对象的create()方法创建AlertDialog对象，再调用AlertDialog对象的show()方法显示对话框 * * * 总之：调用Builder对象设置图标，标题，内容，按钮，在create()，show() * */ public class MainActivity extends Activity { TextView show; String[] items=new String[]{ "湖北省","福建省","贵州省","四川省" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); show=(TextView) findViewById(R.id.textView1); } /*简单文本对话框：builder.setMessage()设置内容*/ public void simple(View v){ AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setTitle("简单对话框"); builder.setIcon(R.drawable.tools); builder.setMessage("这是简单文本对话框\n第二行内容"); //为builder对象添加确定按钮，不过这里嵌套了一个函数 setPositiveButton(builder); //为builder对象添加取消按钮 builder=setNegativeButton(builder); //builder创建对话框对象AlertDialog AlertDialog simpledialog=builder.create(); simpledialog.show(); } /*简单列表对话框（数组对话框）:builder.setItems()设置内容*/ public void simpleList(View v){ AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setTitle("数组列表对话框"); builder.setIcon(R.drawable.tools); builder.setItems(items, new OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub show.setText("你单击了 "+items[which]); } }); setPositiveButton(builder); builder=setNegativeButton(builder); AlertDialog simplelistdialog=builder.create(); simplelistdialog.show(); } /*单选列表项对话框：builder.setSingleChoiceItems()设置内容，内容参数可以是数组，Cursor，ListAdapter*/ public void singleChoice(View v){ AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setTitle("单选列表项对话框"); builder.setIcon(R.drawable.tools); //设置单选列表项，默认选中第二项 builder.setSingleChoiceItems(items,1, new OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub show.setText("你单击了 "+items[which]); } }); setPositiveButton(builder); builder=setNegativeButton(builder); AlertDialog simplechoicedialog=builder.create(); simplechoicedialog.show(); } /* * *多选列表项对话框： builder.setMultiChoiceItems()设置内容，参数可以是数组，Cursor数据库返回结果集 * * AlertDialog.Builder.setMultiChoiceItems(CharSequence[] items, boolean[] checkedItems, OnMultiChoiceClickListener listener)*/ public void multiChoice(View v){ AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setTitle("多选列表项对话框"); builder.setIcon(R.drawable.tools); //设置单多选列表项，默认选中第二项，第四项 builder.setMultiChoiceItems(items,new boolean[]{false,true,false,true},new OnMultiChoiceClickListener(){ @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { // TODO Auto-generated method stub //添加处理方法 } }); setPositiveButton(builder); builder=setNegativeButton(builder); AlertDialog simplechoicedialog=builder.create(); simplechoicedialog.show(); } /*自定义Adapter对话框:builder.setAdapter设置内容，内容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter*/ public void customList(View v){ AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setTitle("自定义Adapter对话框"); builder.setIcon(R.drawable.tools); builder.setAdapter(new ArrayAdapter<String>(this,R.layout.array_item,items), new OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub show.setText("你单击了 "+items[which]); } }); //为builder对象添加确定按钮，不过这里嵌套了一个函数 setPositiveButton(builder); //为builder对象添加取消按钮 builder=setNegativeButton(builder); //builder创建对话框对象AlertDialog AlertDialog adapterdialog=builder.create(); adapterdialog.show(); } /*自定义View对话框：builder.setView()设置View*/ public void customView(View v){ //获取xml布局文件对象 TableLayout loginform=(TableLayout) getLayoutInflater().inflate(R.layout.login, null); AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setTitle("自定义View对话框"); builder.setIcon(R.drawable.tools); //设置对话框显示的View组件 builder.setView(loginform); //为builder对象添加确定按钮，不过这里嵌套了一个函数 setPositiveButton(builder); //为builder对象添加取消按钮 builder=setNegativeButton(builder); //builder创建对话框对象AlertDialog AlertDialog viewdialog=builder.create(); viewdialog.show(); } //返回对象是原来的Builder对象 private AlertDialog.Builder setPositiveButton(AlertDialog.Builder builder) { // TODO Auto-generated method stub return builder.setPositiveButton("确定", new OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub show.setText("单击了【确定】按钮！"); } }); } //返回对象是Builder对象 private AlertDialog.Builder setNegativeButton(AlertDialog.Builder builder) { // TODO Auto-generated method stub return builder.setNegativeButton("取消", new OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub show.setText("单击了【取消】按钮！"); } }); } @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; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } } ~~~