dialog 中装listview并让每一个item分隔悬空，并具有radiobutton的效果

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/transparent"
android:orientation="vertical">
<ListView
android:id="@+id/lv_withdraw_account"
android:background="@android:color/transparent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:dividerHeight="16dp"//这个比较关键，指定分隔距离
android:divider="@android:color/transparent"></ListView>//让分隔线透明，这样看起来就是上下成员分开了一样

</LinearLayout>
样式文件，让dialog背景透明，在调用时用到

<stylename="dialog"parent="@android:style/Theme.Dialog">
<itemname="android:windowFrame">@null</item><!--边框-->
<itemname="android:windowIsFloating">true</item><!--是否浮现在activity之上-->
<itemname="android:windowIsTranslucent">true</item><!--半透明-->
<itemname="android:windowNoTitle">true</item><!--无标题-->
<itemname="android:windowBackground">@android:color/transparent</item><!--背景透明-->
<itemname="android:backgroundDimEnabled">true</item><!--模糊-->//为false时，整个屏幕无主次之分，就像dialog直接帖在active上面，其它区域没有变灰效果
</style>

自定义dialogjava代码

publicclassTransparentDialogextendsAlertDialog{

publicTransparentDialog(Contextcontext,inttheme){
super(context,theme);
}

publicTransparentDialog(Contextcontext){
super(context);
}

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog__withdraw_cash_account);
}
}

mAlertDialog=newTransparentDialog(this,R.style.dialog);//创建Dialog并设置样式主题
mAlertDialog.show();
//dialog在show出来后才能发现他的子控件
lvWithdrawAccount=(ListView)mAlertDialog.findViewById(R.id.lv_withdraw_account);
lvWithdrawAccount.setAdapter(mWithdrawCashAdapter);

<?xmlversion="1.0"encoding="utf-8"?>
<selectorxmlns:android="http://schemas.android.com/apk/res/android">

<itemandroid:drawable="@mipmap/ico_radiochecked"android:state_selected="true"></item>
<itemandroid:drawable="@mipmap/ico_radio"></item>

</selector>

listitem的布局文件为

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:orientation="horizontal"
android:paddingLeft="20dp"
android:paddingRight="20dp">

<TextView
android:id="@+id/tv_title"
android:layout_width="0dp"
android:layout_height="60dp"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="2015/11/23"
android:focusable="false"
android:textColor="@color/content_font_color"
android:textSize="@dimen/text_large"/>

<ImageView
android:id="@+id/iv_checked"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:gravity="center_vertical"
android:focusable="false"
android:src="@drawable/selector_item_radio_icon"/>//这个表示在该控件在被选中时所显示图片，用于达到切换的效果

</LinearLayout>

javacode用法

lvWithdrawAccount.setOnItemClickListener(newAdapterView.OnItemClickListener(){
@Override
publicvoidonItemClick(AdapterView<?>parent,Viewview,intposition,longid){
view.setSelected(true);//在被点击时，设该选项为选中状态，这样就好了
}
});

保证dialog里最多显示三个item

lvWithdrawAccount.setAdapter(mWithdrawCashAdapter);
//设置对话框的高度，最多只能显示3条
//先取item高度
ListAdapterlistAdapter=lvWithdrawAccount.getAdapter();
if(listAdapter==null){
return;
}
ViewlistItem=listAdapter.getView(0,null,lvWithdrawAccount);
listItem.measure(0,0);
intitemHeight=listItem.getMeasuredHeight();
AlertManager.toast(context,"height:"+itemHeight);
if(mWithdrawCashAccounts.size()>3){
params=lvWithdrawAccount.getLayoutParams();
params.height=itemHeight*3+WindowUtils.dpToPixels(this,32);
lvWithdrawAccount.setLayoutParams(params);
}