使用AlertDialgo创建自定义对话框

Main.xml

<LinearLayout 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"
    tools:context=".MainActivity" 
    android:orientation="horizontal">

<Button android:id="@+id/but"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="弹出对话框"/>

<TextView android:id="@+id/mysel"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"/>

</LinearLayout>

Main.java

package com.example.customdialog;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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.view.Menu;
import android.view.View;
import android.webkit.WebChromeClient.CustomViewCallback;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

public class MainActivity extends Activity {

final int CUSTOME_DIALOG=0x113;
//车品牌
private String[] cars=new String[]{"奥迪","宝马","奔驰"};
//车图片
private int[] images=new int[]{R.drawable.aodi,R.drawable.baoma,R.drawable.benchi};

TextView mysel;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

ImageView imageView=(ImageView) super.findViewById(R.id.imageView);
TextView textView=(TextView) super.findViewById(R.id.textView);
Button but=(Button) super.findViewById(R.id.but);
mysel=(TextView) super.findViewById(R.id.mysel);

but.setOnClickListener(new View.OnClickListener() {

@SuppressWarnings("deprecation")
@Override
public void onClick(View v) {
showDialog(CUSTOME_DIALOG);
}
});
}


@SuppressWarnings("deprecation")
@Override
protected Dialog onCreateDialog(int id, Bundle args) {
//判断需要生成哪种类型的对话框
switch(id){
case CUSTOME_DIALOG:
Builder b=new AlertDialog.Builder(MainActivity.this);
b.setIcon(R.drawable.ic_launcher);
b.setTitle("自定义对话框");

//创建一个List集合，List集合的元素时Map,不能通过new List（）方式进行创建，以为在java.util当中List是一个接口
List<Map<String,Object>> listItems=new ArrayList<Map<String,Object>>();
for(int i=0;i<cars.length;i++){
//Map也是一个接口，不能通过new Map()进行创建
Map<String,Object> listItem=new HashMap<String,Object>();
listItem.put("image", images[i]);
listItem.put("car", cars[i]);

//将一个listItem项添加到List集合当中
listItems.add(listItem);
}
String[] from=new String[]{"image","car"};
int [] to=new int[]{R.id.imageView,R.id.textView};

//创建一个SimpleAdapter
SimpleAdapter simpleAdapter=new SimpleAdapter(this,listItems,R.layout.dialog,from,to);
//为对话框设置列表
b.setAdapter(simpleAdapter, new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
mysel.setText("您的选择为"+cars[which]);
}
});

return b.create();
}

return super.onCreateDialog(id, args);
}
}

dialog.xml

<LinearLayout 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"
    tools:context=".MainActivity" 
    android:orientation="horizontal">

    <ImageView android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="25dp"/>
    
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="40dp"
        android:layout_marginTop="25dp"/>

</LinearLayout>