Android中经常会使用到Dialog（弹出框效果），而且功能非常强大，可以模拟出N种弹出框效果。如图所示：
[img]http://files.jb51.net/file_images/article/201310/2013103010041612.gif[/img]
下面将通过一个小实例，来像大家展示Android中功能强大的Dialog。代码都写了详细的注释，读者不妨试着手动去敲。
当然，由于时间的关系，还有个别功能没有完成，先有的几个展示效果中也可能有bug，代码也有很多需要优化的地方。望大家热心指出。
下面是代码（有点长哦）：
package com.chaoyang.activity;
import java.util.ArrayList;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
final String[] items={"张三","李四","王五","赵六","阿猫","阿狗"};
int mSingleChoiceID = -1;
ArrayList <Integer>MultiChoiceID = new ArrayList <Integer>();
private ProgressDialog mProgressDialog = null;
private static final int MAX_PROGRESS = 100;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/*START 设置那些按钮的点击监听对象*/
ButtonOnclikListen listen =new ButtonOnclikListen();
Button btnConfim =(Button)this.findViewById(R.id.btnConfim);
Button btnCheck =(Button)this.findViewById(R.id.btnCheck);
Button btnCustom =(Button)this.findViewById(R.id.btnCustom);
Button BtnList =(Button)this.findViewById(R.id.BtnList);
Button btnMore =(Button)this.findViewById(R.id.btnMore);
Button BtnProgressbar =(Button)this.findViewById(R.id.BtnProgressbar);
Button btnRead =(Button)this.findViewById(R.id.btnRead);
Button btnRidio =(Button)this.findViewById(R.id.btnRidio);
btnConfim.setOnClickListener(listen);
btnCheck.setOnClickListener(listen);
btnConfim.setOnClickListener(listen);
BtnList.setOnClickListener(listen);
btnMore.setOnClickListener(listen);
BtnProgressbar.setOnClickListener(listen);
btnRead.setOnClickListener(listen);
btnRidio.setOnClickListener(listen);
/* END */
}
//定义一个公共方法，弹出消息
private void showDialogMSG(String msg) {
new AlertDialog.Builder(MainActivity.this)
.setMessage(msg)
.show();
}
//定义一个内部类，继承至OnClickListener，专门来处理按钮点击事件（面向对象，灵活）
private final class ButtonOnclikListen implements View.OnClickListener
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Button button =(Button) v;//接收被点击的Button对象
AlertDialog.Builder builder =new AlertDialog.Builder(MainActivity.this);//定义一个弹出框对象
builder.setIcon(R.drawable.aa);//设置弹出框的ICON
switch (v.getId())
{
case R.id.btnConfim :
builder.setTitle("确定提交吗？");//设置弹出框的标题
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
showDialogMSG("您选择了确定");
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
showDialogMSG("您选择了取消");
}
});
break;
case R.id.btnMore:
builder.setTitle("评价");//标题
builder.setMessage("说说李孝利在你心里的印象");//弹出框消息
builder.setPositiveButton("性感",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
showDialogMSG("您觉得她很性感");
}
});
builder.setNeutralButton("漂亮", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
showDialogMSG("您觉得她很漂亮");
}
});
builder.setNegativeButton("风骚", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
showDialogMSG("您觉得她很风骚");
}
});
break;
case R.id.BtnList :
builder.setTitle("列表框");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
showDialogMSG("您选择了ID为"+which+"的人，名字叫："+items[which]);
}
});
break;
case R.id.btnRidio:
mSingleChoiceID = -1;
builder.setTitle("单选框");
builder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
mSingleChoiceID=which;
showDialogMSG("您选择了ID是"+mSingleChoiceID+",名字为："+items[which]);
}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
if(mSingleChoiceID>-1)
{
showDialogMSG("您最终选择的是"+items[mSingleChoiceID]);
}else
{
showDialogMSG("您最终选择的是"+items[0]);
}
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
break;
case R.id.btnCheck :
MultiChoiceID.clear(); //先清空集合
builder.setTitle("多项选择");
builder.setMultiChoiceItems(items,new boolean[]{false,false,false,false,false,false}, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
MultiChoiceID.add(which);
showDialogMSG("您选择了"+items[which]);
}else
{
MultiChoiceID.remove(which);
}
}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
String str="";
for(int i = 0;i<MultiChoiceID.size();i++)
{
str+=items[MultiChoiceID.get(i)]+",";
}
//去掉最后一个","
if(str.length()>0){
str = str.substring(0,str.length()-1);
}
showDialogMSG("你一共选择的有"+str);
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
break;
case R.id.BtnProgressbar:
mProgressDialog =new ProgressDialog(MainActivity.this);
mProgressDialog.setTitle("进度条窗口");
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置样式
mProgressDialog.setMax(MAX_PROGRESS);//设置最大值
mProgressDialog.setButton("确定", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
//这里添加点击后的逻辑
}
});
mProgressDialog.setButton2("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
//这里添加点击后的逻辑
}
});
mProgressDialog.show();
new Thread().start();
return;
case R.id.btnCustom:
break;
case R.id.btnRead:
break;
}
builder.create().show();//创建并显示弹出框
}
}
}
布局文件部分，比较简单：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/btnConfim"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="确定/取消"
/>
<Button
android:id="@+id/btnMore"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="多个消息提示"
/>
<Button
android:id="@+id/BtnList"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="列表框"
/>
<Button
android:id="@+id/BtnProgressbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="进度条框"
/>
<Button
android:id="@+id/btnRidio"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="单选框"
/>
<Button
android:id="@+id/btnCheck"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="多选框"
/>
<Button
android:id="@+id/btnCustom"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="自定义布局"
/>
<Button
android:id="@+id/btnRead"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="读取进度框"
/>
</LinearLayout>
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