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思路：
外层控件用的是gridview，里面每个item放一个framelayout，framelayout里面有checkbox和imageview，chechbox添加background实现选中效果,选中背景为透明，显示item的勾勾图标，不选中checkbox就有背景，挡住选中的勾勾。。重写gridview，实现监听和数据适配，用一个接口返回选中的数据。
代码：
choosemoneylayout.java
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public class choosemoneylayout extends gridview {
private int[] moneylist = {}; //数据源
private layoutinflater minflater;
private myadapter adapter; //适配器
int defaultchoose = 0; //默认选中项
public choosemoneylayout(context context, attributeset attrs) {
super(context, attrs);
setdata();
}
public void setdata() {
minflater = layoutinflater.from(getcontext());
//配置适配器
adapter = new myadapter();
setadapter(adapter);
}
/**
* 设置默认选择项目，
* @param defaultchoose
*/
public void setdefaultpositon(int defaultchoose) {
this.defaultchoose = defaultchoose;
adapter.notifydatasetchanged();
}
/**
* 设置数据源
* @param moneydata
*/
public void setmoneydata(int[] moneydata){
this.moneylist = moneydata;
}
class myadapter extends baseadapter {
private checkbox checkbox;
@override
public int getcount() {
return moneylist.length;
}
@override
public object getitem(int position) {
return moneylist[position];
}
@override
public long getitemid(int position) {
return position;
}
@override
public view getview(final int position, view convertview, viewgroup parent) {
myviewholder holder;
if (convertview == null) {
holder = new myviewholder();
convertview = minflater.inflate(r.layout.item_money_pay, parent, false);
holder.moneypaycb = (checkbox) convertview.findviewbyid(r.id.money_pay_cb);
convertview.settag(holder);
} else {
holder = (myviewholder) convertview.gettag();
}
holder.moneypaycb.settext(getitem(position) + "元");
holder.moneypaycb.setoncheckedchangelistener(new compoundbutton.oncheckedchangelistener() {
@override
public void oncheckedchanged(compoundbutton buttonview, boolean ischecked) {
if (ischecked) {
//设置选中文字颜色
buttonview.settextcolor(getresources().getcolor(r.color.light_color_blue));
//取消上一个选择
if (checkbox != null) {
checkbox.setchecked(false);
}
checkbox = (checkbox) buttonview;
} else {
checkbox = null;
//设置不选中文字颜色
buttonview.settextcolor(getresources().getcolor(r.color.darkgray));
}
//回调
listener.choosemoney(position, ischecked, (integer) getitem(position));
}
});
if (position == defaultchoose) {
defaultchoose = -1;
holder.moneypaycb.setchecked(true);
checkbox = holder.moneypaycb;
}
return convertview;
}
private class myviewholder {
private checkbox moneypaycb;
}
}
/**
* 解决嵌套显示不完
* @param widthmeasurespec
* @param heightmeasurespec
*/
@override
public void onmeasure(int widthmeasurespec, int heightmeasurespec) {
int expandspec = measurespec.makemeasurespec(integer.max_value >> 2,
measurespec.at_most);
super.onmeasure(widthmeasurespec, expandspec);
}
private onchosemoneylistener listener;
public void setonchosemoneylistener(onchosemoneylistener listener) {
this.listener = listener;
}
public interface onchosemoneylistener {
/**
* 选择金额返回
*
* @param position gridview的位置
* @param ischeck 是否选中
* @param moneynum 钱数
*/
void choosemoney(int position, boolean ischeck, int moneynum);
}
}
item_money_pay.xml
<?xml version="1.0" encoding="utf-8"?>
<framelayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="80dp"
android:descendantfocusability="blocksdescendants">
<!-- 选中时候的图片 -->
<imageview
android:layout_width="15dp"
android:layout_height="15dp"
android:layout_gravity="right|bottom"
android:layout_marginbottom="3dp"
android:layout_marginright="3dp"
android:maxheight="9dp"
android:maxwidth="9dp"
android:scaletype="fitcenter"
android:src="@drawable/money_pay_type_choose" />
<checkbox
android:id="@+id/money_pay_cb"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:background="@drawable/money_pay_selector"
android:button="@null"
android:gravity="center"
android:paddingbottom="2.5dp"
android:paddingleft="15dp"
android:paddingright="15dp"
android:paddingtop="2.5dp"
android:textsize="20sp"
android:textcolor="#ff777777"
/>
</framelayout>
checkbox的background: money_pay_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable/blue_border_noback_drawable"/>
<item android:state_selected="true" android:drawable="@drawable/blue_border_noback_drawable"/>
<item android:state_checked="true" android:drawable="@drawable/blue_border_noback_drawable"/>
<item >
<shape>
<solid android:color="#ffffffff"/>
<corners android:radius="5dp"/>
<stroke android:color="#ffbfbfbf"
android:width="1dp"/>
</shape>
</item>
</selector>
activity xml:
<com.minstone.view.choosemoneylayout
android:id="@+id/money_chose_money"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:horizontalspacing="17dp"
android:numcolumns="3"
android:verticalspacing="20dp" />
activity里面代码:
private choosemoneylayout moneychosemoney;
private int money; //当前选择的金额
private void initdata() {
//获取控件
moneychosemoney = (choosemoneylayout)findviewbyid(r.id.money_chose_money);
//数设置据源
moneychosemoney.setmoneydata(new int[]{30, 50, 100, 200, 300, 500,1000});
//设置默认选中项
moneychosemoney.setdefaultpositon(3);
//金额选择监听
moneychosemoney.setonchosemoneylistener(new choosemoneylayout.onchosemoneylistener() {
@override
public void choosemoney(int position,boolean ischeck, int moneynum) {
if(ischeck){
money = moneynum;
toastutil.showcustomtoast(payactivity.this,money+"");
}else{
money = 0;
}
}
});
}
以上这篇详谈自定义view之gridview单选 金额选择layout-choosemoneylayout就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持移动技术网。
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