本文实例为大家分享了android九宫格图片展示的具体代码，供大家参考，具体内容如下
首先来看一下我们要做成的而效果：
主页面要显示一个viewpager自动轮播+小圆点联动的效果 ：
废话不多说，直接上代码：
布局文件：
activity_main.xml：
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<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<relativelayout
android:layout_width="match_parent"
android:layout_height="200dp" >
<android.support.v4.view.viewpager
android:id="@+id/main_vp"
android:layout_width="match_parent"
android:layout_height="200dp" >
</android.support.v4.view.viewpager>
<linearlayout
android:id="@+id/ll_doc"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignparentbottom="true"
android:gravity="center"
android:orientation="horizontal" >
</linearlayout>
</relativelayout>
<linearlayout
android:layout_width="match_parent"
android:layout_height="100dp" >
</linearlayout>
<linearlayout
android:layout_width="match_parent"
android:layout_height="80dp" >
</linearlayout>
<gridview
android:id="@+id/main_gv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numcolumns="2"
>
</gridview>
</linearlayout>
menu下的main.xml：
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.monthextwo.mainactivity" >
<item
android:id="@+id/action_settings"
android:orderincategory="100"
android:showasaction="never"
android:title="@string/action_settings"/>
</menu>
接下来看一下要用到的架包文件：
最后是java文件：
首先是com.example.monthextwo包中的mainactivity.java：
public class mainactivity extends activity {
viewpager vp;
dataresult data;
list<imageview> list;
list<imageview> list_doc;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
initview();
initdata();
}
private void initview() {
vp = (viewpager) findviewbyid(r.id.main_vp);
}
public void initdoc(){
linearlayout ll_dco = (linearlayout) findviewbyid(r.id.ll_doc);
list_doc = new arraylist<imageview>();
if(data != null && data.getresult().getadvs().size() > 0){
for (int i = 0; i < data.getresult().getadvs().size(); i++) {
imageview iv = new imageview(this);
layoutparams params = new layoutparams(layoutparams.wrap_content, layoutparams.wrap_content);
params.rightmargin = 10;
iv.setlayoutparams(params);
if(i == 0){
iv.setbackgroundresource(r.drawable.doc_check);
}else{
iv.setbackgroundresource(r.drawable.doc_uncheck);
}
ll_dco.addview(iv);
list_doc.add(iv);
}
}
}
private void initdata() {
new asynctask<string, string, string>(){
@override
protected string doinbackground(string... params) {
string json = netutils.getnetdata("http://www.babybuy100.com/api/getshopoverview.ashx");
gson gson = new gson();
data = gson.fromjson(json, dataresult.class);
log.i("=================", data.tostring());
return null;
}
@override
protected void onpostexecute(string result) {
initvp();
super.onpostexecute(result);
}
}.execute();
}
protected void initvp() {
list = new arraylist<imageview>();
if(data != null && data.getresult().getadvs().size() > 0){
for (int i = 0; i < data.getresult().getadvs().size(); i++) {
imageview iv = new imageview(this);
iv.setscaletype(scaletype.fit_xy);
imageloader.getinstance().displayimage(data.getresult().getadvs().get(i).getpic(), iv);
list.add(iv);
}
//创建适配器
mypageradatper mypageradatper = new mypageradatper(list);
vp.setadapter(mypageradatper);
initdoc();
vp.addonpagechangelistener(new onpagechangelistener() {
@override
public void onpageselected(int arg0) {
int index = arg0 % list_doc.size();
for (int i = 0; i < list_doc.size(); i++) {
list_doc.get(i).setbackgroundresource(r.drawable.doc_uncheck);
}
list_doc.get(index).setbackgroundresource(r.drawable.doc_check);
}
@override
public void onpagescrolled(int arg0, float arg1, int arg2) {
// todo auto-generated method stub
}
@override
public void onpagescrollstatechanged(int arg0) {
// todo auto-generated method stub
}
});
}
}
}
myapp.xml：
public class myapp extends application{
@override
public void oncreate() {
// todo auto-generated method stub
super.oncreate();
imageloaderconfiguration configuration = imageloaderconfiguration.createdefault(this);
imageloader.getinstance().init(configuration);
}
}
com.example.monthextwo.adapter包下的mypageradatper.java：
public class mypageradatper extends pageradapter{
list<imageview> list;
public mypageradatper(list<imageview> list) {
super();
this.list = list;
}
@override
public int getcount() {
if(list != null){
return integer.max_value;
}
return 0;
}
@override
public boolean isviewfromobject(view arg0, object arg1) {
// todo auto-generated method stub
return arg0 == arg1;
}
@override
public void destroyitem(viewgroup container, int position, object object) {
// todo auto-generated method stub
container.removeview((view) object);
}
@override
public object instantiateitem(viewgroup container, int position) {
int index = position % list.size();
container.addview(list.get(index));
return list.get(index);
}
}
com.example.monthextwo.bean包下的adv.java：
public class adv {
string pic;
public string getpic() {
return pic;
}
public void setpic(string pic) {
this.pic = pic;
}
@override
public string tostring() {
return "avd [pic=" + pic + "]";
}
}
brand.java： *这是个空文件*
public class category { }
category.java： *这是个空文件*
public class category { }
dataresult.java：
public class dataresult {
result result;
public result getresult() {
return result;
}
public void setresult(result result) {
this.result = result;
}
@override
public string tostring() {
return "dataresult [result=" + result + "]";
}
}
nation.java： *这是个空文件*
public class nation { }
result.java：
public class result {
list<adv> advs = new arraylist<adv>();
list<brand> brands = new arraylist<brand>();
list<category> categorys = new arraylist<category>();
list<nation> nations = new arraylist<nation>();
public list<adv> getadvs() {
return advs;
}
public void setadvs(list<adv> advs) {
this.advs = advs;
}
public list<brand> getbrands() {
return brands;
}
public void setbrands(list<brand> brands) {
this.brands = brands;
}
public list<category> getcategorys() {
return categorys;
}
public void setcategorys(list<category> categorys) {
this.categorys = categorys;
}
public list<nation> getnations() {
return nations;
}
public void setnations(list<nation> nations) {
this.nations = nations;
}
@override
public string tostring() {
return "result [avds=" + advs + ", brands=" + brands + ", categorys="
+ categorys + ", nations=" + nations + "]";
}
}
com.example.monthextwo.net包下的netutils.java：
public class netutils {
public static string getnetdata(string path){
string json = "";
try {
url url = new url(path);
httpurlconnection conn = (httpurlconnection) url.openconnection();
conn.setrequestmethod("get");
int code = conn.getresponsecode();
if(code == 200){
inputstream is = conn.getinputstream();
bytearrayoutputstream bos = new bytearrayoutputstream();
int len = -1;
byte[] buff = new byte[1024];
while((len = is.read(buff)) != -1){
bos.write(buff, 0, len);
}
json = new string(bos.tobytearray());
}
} catch (exception e) {
// todo auto-generated catch block
e.printstacktrace();
}
return json;
}
}
以上就是全部的代码了，新手练习。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持移动技术网。
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