Android自带的对话框标题不好看，如果我们需要给弹出的对话框设置一个自己定义的标题，可以使用AlertDialog.Builder的setCustomTitle()方法。

定义一个对话框标题的title.xml文件：

<?xml version="1.0" encoding="UTF-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@color/white" android:gravity="center_vertical" android:orientation="vertical" > <LinearLayout android:id="@+id/patient_top" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignParentTop="true" android:background="@color/green" android:gravity="center_vertical|center_horizontal" android:orientation="vertical" > <TextView android:id="@+id/txtPatient" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="选择城市" android:textColor="@color/white" android:textSize="20sp" /> </LinearLayout></LinearLayout>

MainActivity的布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center_vertical|center_horizontal" android:orientation="vertical" 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="com.hzhi.dialogtest.MainActivity" > <Button android:id="@+id/btn01" android:layout_width="150dp" android:layout_height="wrap_content" android:text="选择城市1" /> <Button android:id="@+id/btn02" android:layout_width="150dp" android:layout_height="wrap_content" android:text="选择城市2" /></LinearLayout>

MainActivity.java文件：

package com.hzhi.dialogtest;import android.support.v7.app.ActionBarActivity;import android.app.AlertDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends ActionBarActivity implements OnClickListener{ final String[] cities = new String[6]; Button button_01, button_02; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView(){ cities[0] = "北京"; cities[1] = "上海"; cities[2] = "深圳"; cities[3] = "广州"; cities[4] = "杭州"; cities[5] = "成都"; button_01 = (Button) findViewById(R.id.btn01); button_01.setOnClickListener(this); button_02 = (Button) findViewById(R.id.btn02); button_02.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()){ case R.id.btn01: AlertDialog.Builder builder1 = new AlertDialog.Builder(MainActivity.this); builder1.setItems(cities, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }); builder1.setTitle("选择城市"); builder1.show(); break; case R.id.btn02: LayoutInflater layoutInflater = LayoutInflater.from(MainActivity.this); View mTitleView = layoutInflater.inflate(R.layout.title, null); AlertDialog.Builder builder2 = new AlertDialog.Builder(MainActivity.this); builder2.setItems(cities, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }); builder2.setCustomTitle(mTitleView); builder2.show(); break; } } }

运行效果如下，左边是点击第一个按钮，弹出Android系统自带的对话框(直接用setTitle()设置标题)；右边是点击第二个按钮，首先inflate一个View，然后用setCustomTitle()方法把该View设置成对话框的标题。

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