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。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
