浅析Android中强大的Dialog
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：
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>