AlertDialog生成的對話框可分為4個區域：圖標區，標題區，內容區，按鈕區

結構如圖：

AlertDialog對話框的使用：

1，創建AlertDialog.Builder對象
2，調用Builder對象的setTitle()設置標題，setIcon設置圖標
3，調用Builder對象的相關方法設置內容，AlertDialog提供如下六中設置指定對話框的內容：

setMessage()；設置簡單文本框的內容
setItems()；設置簡單列表的內容，數組
setSingleChoiceItems()；；設置單選列表的內容，內容參數可以是數組Cursor，ListAdapter
setMultiChoiceItems()；設置多選列表項的內容，內容參數可以是數組，Cursor
setAdapter();設置內容，內容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter
setView();設置內容，參數是自定義的View
4，調用Builder對象的setPositiveButton()和 setNegativeButton()設置按鈕和監聽器
5，調用Builder對象的create()方法創建AlertDialog對象，再調用AlertDialog對象的show()方法顯示對話框

總之：調用Builder對象設置圖標，標題，內容，按鈕，在create()，show()

代碼模板：

new AlertDialog.Builder(this)// 設置對話框標題.setTitle("簡單對話框")// 設置圖標.setIcon(R.drawable.tools)//設置內容，可代替.setMessage("對話框的測試內容\n第二行內容").setPositiveButton("確定"，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"><TextViewandroid:id="@+id/textView1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="TextView" /><TableLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content" ><TableRowandroid:id="@+id/tableRow1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:gravity="center_horizontal" ><Buttonandroid:id="@+id/button1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="simple"android:text="簡單文本" /><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="simpleList"android:text="數組列表" /><Buttonandroid:id="@+id/button3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="singleChoice"android:text="單選列表" /></TableRow><TableRowandroid:id="@+id/tableRow2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="center_horizontal" ><Buttonandroid:id="@+id/button4"android:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="multiChoice"android:text="多選列表" /><Buttonandroid:id="@+id/button5"android:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="customList"android:text="自定義列表" /><Buttonandroid:id="@+id/button6"android:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="customView"android:text="自定義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對話框的使用：* AlertDialog對話框有四個區域：圖標區，標題區，內容區，按鈕區* 1，創建AlertDialog.Builder對象* 2，調用Builder對象的setTitle()設置標題，setIcon設置圖標* 3，調用Builder對象的相關方法設置內容* setMessage()；設置簡單文本框的內容* setItems()；設置簡單列表的內容，數組* setSingleChoiceItems()；；設置單選列表的內容，內容參數可以是數組，Cursor，ListAdapter* setMultiChoiceItems()；設置多選列表項的內容，內容參數可以是數組，Cursor* setAdapter();設置內容，內容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter* setView();設置內容，參數是自定義的View* 4，調用Builder對象的setPositiveButton()和 setNegativeButton()設置按鈕和監聽器* 5，調用Builder對象的create()方法創建AlertDialog對象，再調用AlertDialog對象的show()方法顯示對話框* * * 總之：調用Builder對象設置圖標，標題，內容，按鈕，在create()，show() * */ public class MainActivity extends Activity {TextView show;String[] items=new String[]{"湖北省","福建省","貴州省","四川省"};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);show=(TextView) findViewById(R.id.textView1);}/*簡單文本對話框：builder.setMessage()設置內容*/ public void simple(View v){AlertDialog.Builder builder=new AlertDialog.Builder(this);builder.setTitle("簡單對話框");builder.setIcon(R.drawable.tools);builder.setMessage("這是簡單文本對話框\n第二行內容");//為builder對象添加確定按鈕，不過這里嵌套了一個函數setPositiveButton(builder);//為builder對象添加取消按鈕builder=setNegativeButton(builder);//builder創建對話框對象AlertDialogAlertDialog simpledialog=builder.create();simpledialog.show();}/*簡單列表對話框（數組對話框）:builder.setItems()設置內容*/public void simpleList(View v){AlertDialog.Builder builder=new AlertDialog.Builder(this);builder.setTitle("數組列表對話框");builder.setIcon(R.drawable.tools);builder.setItems(items, new OnClickListener(){@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubshow.setText("你單擊了 "+items[which]);}}); setPositiveButton(builder);builder=setNegativeButton(builder);AlertDialog simplelistdialog=builder.create();simplelistdialog.show();}/*單選列表項對話框：builder.setSingleChoiceItems()設置內容，內容參數可以是數組，Cursor，ListAdapter*/public void singleChoice(View v){AlertDialog.Builder builder=new AlertDialog.Builder(this);builder.setTitle("單選列表項對話框");builder.setIcon(R.drawable.tools);//設置單選列表項，默認選中第二項builder.setSingleChoiceItems(items,1, new OnClickListener(){@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubshow.setText("你單擊了 "+items[which]);}}); setPositiveButton(builder);builder=setNegativeButton(builder);AlertDialog simplechoicedialog=builder.create();simplechoicedialog.show();}/** *多選列表項對話框： builder.setMultiChoiceItems()設置內容，參數可以是數組，Cursor數據庫返回結果集* * AlertDialog.Builder.setMultiChoiceItems(CharSequence[] items, boolean[] checkedItems, OnMultiChoiceClickListener listener)*/public void multiChoice(View v){AlertDialog.Builder builder=new AlertDialog.Builder(this);builder.setTitle("多選列表項對話框");builder.setIcon(R.drawable.tools);//設置單多選列表項，默認選中第二項，第四項builder.setMultiChoiceItems(items,new boolean[]{false,true,false,true},new OnMultiChoiceClickListener(){@Overridepublic void onClick(DialogInterface dialog, int which,boolean isChecked) {// TODO Auto-generated method stub//添加處理方法}}); setPositiveButton(builder);builder=setNegativeButton(builder);AlertDialog simplechoicedialog=builder.create();simplechoicedialog.show();}/*自定義Adapter對話框:builder.setAdapter設置內容，內容是ListAdapter，常用的BaseAdapter，SimpleAdapter，ArrayAdapter*/ public void customList(View v){AlertDialog.Builder builder=new AlertDialog.Builder(this);builder.setTitle("自定義Adapter對話框");builder.setIcon(R.drawable.tools);builder.setAdapter(new ArrayAdapter<String>(this,R.layout.array_item,items), new OnClickListener(){@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubshow.setText("你單擊了 "+items[which]);}});//為builder對象添加確定按鈕，不過這里嵌套了一個函數setPositiveButton(builder);//為builder對象添加取消按鈕builder=setNegativeButton(builder);//builder創建對話框對象AlertDialogAlertDialog adapterdialog=builder.create();adapterdialog.show();}/*自定義View對話框：builder.setView()設置View*/public void customView(View v){//獲取xml布局文件對象TableLayout loginform=(TableLayout) getLayoutInflater().inflate(R.layout.login, null);AlertDialog.Builder builder=new AlertDialog.Builder(this);builder.setTitle("自定義View對話框");builder.setIcon(R.drawable.tools);//設置對話框顯示的View組件builder.setView(loginform);//為builder對象添加確定按鈕，不過這里嵌套了一個函數setPositiveButton(builder);//為builder對象添加取消按鈕builder=setNegativeButton(builder);//builder創建對話框對象AlertDialogAlertDialog viewdialog=builder.create();viewdialog.show();}//返回對象是原來的Builder對象private AlertDialog.Builder setPositiveButton(AlertDialog.Builder builder) {// TODO Auto-generated method stubreturn builder.setPositiveButton("確定", new OnClickListener(){@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubshow.setText("單擊了【確定】按鈕！");}});}//返回對象是Builder對象private AlertDialog.Builder setNegativeButton(AlertDialog.Builder builder) {// TODO Auto-generated method stubreturn builder.setNegativeButton("取消", new OnClickListener(){@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubshow.setText("單擊了【取消】按鈕！");}});}@Overridepublic 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;}@Overridepublic 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);} }

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