package com.example.alertdialog; import android.R.bool; import android.os.Bundle; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.content.DialogInterface; import android.content.pm.LabeledIntent; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class MainActivity extends Activity implements OnClickListener {  private Button button1;  private Button button2;  private Button button3;  private Button button4;  private Button button5;  private int mark=0;  private String item[] = { "學生", "工人", "教師", "農民" };  private String multChoice[]={"旅游","電影","運動","讀書"};  @Override  protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  button1 = (Button) findViewById(R.id.btn_button1);  button2 = (Button) findViewById(R.id.btn_button2);  button3 = (Button) findViewById(R.id.btn_button3);  button4 = (Button) findViewById(R.id.btn_button4);  button5 = (Button) findViewById(R.id.btn_button5);  button1.setOnClickListener(this);  button2.setOnClickListener(this);  button3.setOnClickListener(this);  button4.setOnClickListener(this);  button5.setOnClickListener(this);  }  @Override  public void onClick(View v) {  // TODO Auto-generated method stub  switch (v.getId()) {  //確認對話框  case R.id.btn_button1: {  AlertDialog.Builder builder = new Builder(this);  builder.setIcon(R.drawable.ic_launcher);  builder.setTitle("確認對話框");  builder.setMessage("確認退出？");  builder.setPositiveButton("確定",   new DialogInterface.OnClickListener() {   @Override   public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   Toast.makeText(MainActivity.this, "你單擊了確定按鈕",    Toast.LENGTH_SHORT).show();   }   });  builder.setNegativeButton("取消",   new DialogInterface.OnClickListener() {   @Override   public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   Toast.makeText(MainActivity.this, "你單擊了取消按鈕",    Toast.LENGTH_SHORT).show();   }   });  builder.create();  builder.show();  break;  }  //列表對話框  case R.id.btn_button2: {  AlertDialog.Builder builder = new Builder(this);  builder.setIcon(R.drawable.ic_launcher);  builder.setTitle("職業");  builder.setItems(item, new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   Toast.makeText(MainActivity.this, "你的職業是" + item[which],   Toast.LENGTH_SHORT).show();  }  });  builder.create();  builder.show();  break;  }  //多選對話框  case R.id.btn_button3: {  final boolean choose[]=new boolean[multChoice.length];  AlertDialog.Builder builder = new Builder(this);  builder.setIcon(R.drawable.ic_launcher);  builder.setTitle("愛好");  builder.setMultiChoiceItems(multChoice, null, new DialogInterface.OnMultiChoiceClickListener() {  @Override  public void onClick(DialogInterface dialog, int which, boolean isChecked) {   // TODO Auto-generated method stub   choose[which]=isChecked;  }  });  builder.setPositiveButton("確認", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   String result="";   for(int i=0;i<multChoice.length;i++){   if(choose[i]){   result+=multChoice[i]+" ";   }   }   Toast.makeText(MainActivity.this, "你的愛好["+result+"]", Toast.LENGTH_SHORT).show();  }  });  builder.create();  builder.show();  break;  }  //單選對話框  case R.id.btn_button4: {  mark=0;  AlertDialog.Builder builder = new Builder(this);  builder.setIcon(R.drawable.ic_launcher);  builder.setTitle("職業");  builder.setSingleChoiceItems(item, 0, new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   mark=which;  }  });  builder.setPositiveButton("確定",   new DialogInterface.OnClickListener() {   @Override   public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   Toast.makeText(MainActivity.this, "你的職業:"+item[mark], Toast.LENGTH_SHORT).show();   }   });  builder.create();  builder.show();  break;  }  //自定義對話框  case R.id.btn_button5: {  LayoutInflater inflater=LayoutInflater.from(this);  View view=inflater.inflate(R.layout.item, null);  AlertDialog.Builder builder = new Builder(this);  builder.setIcon(R.drawable.ic_launcher);  builder.setTitle("自定義對話框");  builder.setView(view);  builder.setNeutralButton("普通按鈕", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {   // TODO Auto-generated method stub   Toast.makeText(MainActivity.this,"我是自定義的對話框哦",Toast.LENGTH_SHORT).show();  }  });  builder.create();  builder.show();  break;  }  }  } } 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin"  tools:context=".MainActivity" >  <LinearLayout  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:orientation="vertical" >  <Button  android:id="@+id/btn_button1"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="確認對話框" />  <Button  android:id="@+id/btn_button2"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="列表對話框" />  <Button  android:id="@+id/btn_button3"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="多選對話框" />  <Button  android:id="@+id/btn_button4"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="單選對話框" />  <Button  android:id="@+id/btn_button5"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="自定義對話框" />  </LinearLayout> </RelativeLayout> 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical" >  <ImageView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:scaleType="fitCenter"  android:src="@drawable/icon"  />  <TextView  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:text="我是自定義的對話框"  /> </LinearLayout>