足球小将游戏,京都医政,王媛可恶搞西瓜
android listview添加头布局和脚布局
之前学习喜马拉雅的时候做的一个小demo，贴出来，供大家学习参考；
如果我们当前的页面有多个接口、多种布局的话，我们一般的选择无非就是1、多布局；2、各种复杂滑动布局外面套一层scrollview（好low）；3、头布局脚布局。有的时候我们用多布局并不能很好的实现，所以头布局跟脚布局就是我们最好的选择了；学过了listview的话原理很简单，没啥理解的东西，直接贴代码了：
效果图：
正文部分布局：
fragment_classify.xml
我要评论
<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<listview
android:id="@+id/teach_classify_listview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:listselector="#00000000"/>
</linearlayout>
classify_item.xml
<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<view
android:id="@+id/teach_classify_item_divider"
android:background="#f3fdeeee"
android:layout_width="match_parent"
android:layout_height="10dp"/>
<linearlayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<relativelayout
android:id="@+id/teach_classify_left"
android:layout_width="0dp"
android:background="@drawable/item_pressed"
android:layout_height="match_parent"
android:layout_marginleft="15dp"
android:layout_weight="1">
<imageview
android:id="@+id/teach_classify_item_iamge01"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_centervertical="true"
android:src="@mipmap/ic_launcher" />
<textview
android:id="@+id/teach_classify_item_text01"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_centervertical="true"
android:layout_marginleft="60dp"
android:gravity="center_vertical"
android:text="@string/app_name" />
</relativelayout>
<view
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="#efe6e6" />
<relativelayout
android:id="@+id/teach_classify_right"
android:layout_width="0dp"
android:background="@drawable/item_pressed"
android:layout_height="match_parent"
android:layout_marginleft="15dp"
android:layout_weight="1">
<imageview
android:id="@+id/teach_classify_item_iamge02"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_centervertical="true"
android:src="@mipmap/ic_launcher" />
<textview
android:id="@+id/teach_classify_item_text02"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_centervertical="true"
android:layout_marginleft="60dp"
android:gravity="center_vertical"
android:text="@string/app_name" />
</relativelayout>
</linearlayout>
</linearlayout>
头布局：
fragment_classify_header.xml
<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<imageview
android:id="@+id/teach_classify_lv_header"
android:src="@mipmap/ic_launcher"
android:layout_width="match_parent"
android:layout_height="180dp" />
</linearlayout>
脚布局：
fragment_classify_bottom.xml
<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<imageview
android:id="@+id/teach_classify_bottom"
android:src="@mipmap/ic_launcher"
android:layout_width="match_parent"
android:layout_height="160dp" />
</linearlayout>
主页面：
public class classifyfragment extends basefragment implements classifyadapter.onclickitemlistener{
public static final string tag = classifyfragment.class.getsimplename();
private listview mlistview;
private classifyadapter adapter;
private imageview mheaderimage;
private imageview mbottomimage;
@nullable
@override
public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {
layout = inflater.inflate(r.layout.fragment_classify, container, false);
return layout;
}
@override
public void onactivitycreated(@nullable bundle savedinstancestate) {
super.onactivitycreated(savedinstancestate);
initview();
setupview();
}
/**
* header的添加最好放在setadapter之前，在android4.4之前，header添加必须放在设置adapter之前
*/
private void initview() {
mlistview = ((listview) layout.findviewbyid(r.id.teach_classify_listview));
//header
view headerview = layoutinflater.from(getactivity()).inflate(r.layout.fragment_classify_header,null);
mheaderimage = ((imageview) headerview.findviewbyid(r.id.teach_classify_lv_header));
//可以添加多个headerview
mlistview.addheaderview(headerview);
//bottom
view bottomview = layoutinflater.from(getactivity()).inflate(r.layout.fragment_classify_bottom,null);
mbottomimage = ((imageview) bottomview.findviewbyid(r.id.teach_classify_bottom));
mlistview.addfooterview(bottomview);
adapter = new classifyadapter(getactivity(), null);
mlistview.setadapter(adapter);
}
/**
* 网络请求
*/
private void setupview() {
httputil.getstringasync(httpconstant.classify_url, new httputil.requestcallback() {
@override
public void onfailure() {
log.e(tag, "onfailure: ");
}
@override
public void onsuccess(string result) {
log.e(tag, "onsuccess: " + result);
gson gson = new gson();
classifylist classifylist = gson.fromjson(result, classifylist.class);
list<classify> list = classifylist.getlist();
//更新适配器
adapter.updateres(list);
//更新header
imageloader.display(mheaderimage,list.get(0).getcoverpath());
}
@override
public void onfinish() {
log.e(tag, "onfinish: ");
}
});
string url_bottom="http://adse.ximalaya.com/ting?device=android&name=cata_index_banner&network=wifi&operator=0&version=4.3.98";
httputil.getstringasync(url_bottom, new httputil.requestcallback() {
@override
public void onfailure() {
}
@override
public void onsuccess(string result) {
gson gson = new gson();
classifybottomlist classifybottomlist = gson.fromjson(result, classifybottomlist.class);
imageloader.display(mbottomimage, classifybottomlist.getdata().get(0).getcover());
}
@override
public void onfinish() {
}
});
}
@override
public void ononclickitem(int position) {
log.e(tag, "ononclickitem:------------- "+position );
}
}
适配器：
public class classifyadapter extends baseadapter implements view.onclicklistener {
private static final string tag = classifyadapter.class.getsimplename();
private list<classify> data;
private layoutinflater inflater;
private onclickitemlistener listener;//持有接口
public void setlistener(onclickitemlistener listener){
this.listener=listener;
}
public classifyadapter(context context,list<classify>data) {
inflater= (layoutinflater) context.getsystemservice(context.layout_inflater_service);
if (data!=null) {
this.data=data;
}
else {
this.data=new arraylist<>();
}
}
public void updateres(list<classify> data){
if (data!=null) {
this.data.clear();
this.data.addall(data);
notifydatasetchanged();
}
}
@override
public int getcount() {
int count=0;
if (data!=null) {
count=(data.size()-1)/2;
}
return count;
}
@override
public classify getitem(int position) {
return data.get(position);
}
@override
public long getitemid(int position) {
return position;
}
@override
public view getview(int position, view convertview, viewgroup parent) {
viewholder holder=null;
if (convertview==null) {
convertview=inflater.inflate(r.layout.classify_item,parent,false);
holder=new viewholder();
holder.itemiamge01= (imageview) convertview.findviewbyid(r.id.teach_classify_item_iamge01);
holder.itemimage02= (imageview) convertview.findviewbyid(r.id.teach_classify_item_iamge02);
holder.itemtext01= (textview) convertview.findviewbyid(r.id.teach_classify_item_text01);
holder.itemtext02= (textview) convertview.findviewbyid(r.id.teach_classify_item_text02);
holder.topdivider=convertview.findviewbyid(r.id.teach_classify_item_divider);
holder.leftitem=convertview.findviewbyid(r.id.teach_classify_left);
holder.rightitem=convertview.findviewbyid(r.id.teach_classify_right);
convertview.settag(holder);
}
else {
holder= (viewholder) convertview.gettag();
}
//根据条件判断是否显示分割线
if (position%3==0&&position!=0) {
holder.topdivider.setvisibility(view.visible);
}else {
holder.topdivider.setvisibility(view.gone);
}
//加载数据
holder.itemtext01.settext(data.get(position*2+1).gettitle());
holder.itemtext02.settext(data.get(position*2+2).gettitle());
//设置监听
holder.leftitem.setonclicklistener(this);
holder.rightitem.setonclicklistener(this);
//设置标记
holder.leftitem.settag(position*2+1);
holder.rightitem.settag(position*2+2);
//加载图片
imageloader.display(holder.itemiamge01,data.get(position*2+1).getcoverpath());
imageloader.display(holder.itemimage02,data.get(position*2+2).getcoverpath());
return convertview;
}
@override
public void onclick(view v) {
integer position = (integer) v.gettag();
log.e(tag, "onclick: "+position );
if (listener!=null) {
listener.ononclickitem(position);
}
}
private static class viewholder{
//左边的图片
imageview itemiamge01;
//右边的图片
imageview itemimage02;
//右边
textview itemtext01;
textview itemtext02;
//分割线
view topdivider;
//左右布局
view leftitem,rightitem;
}
public interface onclickitemlistener{
void ononclickitem(int position);
}
}
model类：
public class classify {
private string title;
private string coverpath;
public string gettitle() {
return title;
}
public void settitle(string title) {
this.title = title;
}
public string getcoverpath() {
return coverpath;
}
public void setcoverpath(string coverpath) {
this.coverpath = coverpath;
}
}
public class classifylist {
private list<classify> list;
public list<classify> getlist() {
return list;
}
public void setlist(list<classify> list) {
this.list = list;
}
}
public class classifybottom {
private string cover;
public string getcover() {
return cover;
}
public void setcover(string cover) {
this.cover = cover;
}
}
public class classifybottomlist {
private list<classifybottom> data;
public list<classifybottom> getdata() {
return data;
}
public void setdata(list<classifybottom> data) {
this.data = data;
}
}
感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
如对本文有疑问，请在下面进行留言讨论，广大热心网友会与你互动！！ 点击进行留言回复
Android studio开发小型对话机器人app(实例代码)
Android通过Java sdk的方式接入OpenCv的方法
Android 通过cmake的方式接入opencv的方法步骤
Android Studio finish()方法的使用与解决app点击“返回”(直接退出)
Android 进度条 ProgressBar的实现代码(隐藏、出现、加载进度)
网友评论