HttpClient+ViewPager自动轮播

1.MainActivity布局

<RelativeLayout 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”

tools:context=”.MainActivity” >

<GridView

android:id=”@+id/gridView1″

android:layout_width=”match_parent”

android:layout_height=”match_parent”

android:numColumns=”2″ >

</GridView>

</RelativeLayout>

2.SecondActivity布局

tools:context=”.SecondActivity” >

<android.support.v4.view.ViewPager

android:id=”@+id/vp”

android:layout_width=”wrap_content”

android:layout_height=”wrap_content”

/>

</RelativeLayout>

3.gv_item布局

<?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” >

</LinearLayout>

4.bean包

package com.baway.bean;

import java.io.Serializable;

import java.util.List;

public class Goods {

public List<Data> data;

public class Data implements Serializable{

public String content_info;

public String head_img;

public String img;

public String nick_name;

public List<Like_user_list> like_user_list;

public class Like_user_list implements Serializable {

public String head_img;

}

}

}

5.MyApplication类

package com.baway.application;

import com.nostra13.universalimageloader.core.ImageLoader;

import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

import android.app.Application;

public class MyApplication extends Application {

@Override

public void onCreate() {

// TODO Auto-generated method stub

super.onCreate();

//初始化ImageLoader

ImageLoaderConfiguration configuration=new ImageLoaderConfiguration.Builder(this).memoryCacheSize(2*1024*1024).build();

ImageLoader.getInstance().init(configuration);

}

}

6.EntWorkUtils类

package com.baway.utils;

import java.io.IOException;

import java.net.HttpURLConnection;

import java.net.URI;

import org.apache.http.HttpResponse;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.util.EntityUtils;

public class EntWorkUtils {

public static String getStr(){

//请求数据

String path=”http://mbfun.funwear.com/mbfun_server/index.php?m=Home&a=getCollocationListHot&page=1″;

HttpClient client=new DefaultHttpClient();

HttpGet get=new HttpGet(path);

try {

HttpResponse response = client.execute(get);

int code = response.getStatusLine().getStatusCode();

if(code==200){

return EntityUtils.toString(response.getEntity(), “gbk”);

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return null;

}

7.MainActivity类

package com.baway.test;

import java.util.ArrayList;

import java.util.List;

import com.baway.adapter.MyAdapter;

import com.baway.bean.Goods;

import com.baway.bean.Goods.Data;

import com.baway.utils.EntWorkUtils;

import com.google.gson.Gson;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.app.Activity;

import android.content.Intent;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.GridView;

public class MainActivity extends Activity {

private GridView gv;

private MyAdapter adapter;

private List<Data> list=new ArrayList<Data>();

private Handler hand=new Handler(){

public void handleMessage(Message msg) {

list = (List<Data>) msg.obj;

adapter=new MyAdapter(MainActivity.this,list);

gv.setAdapter(adapter);

};

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

//控件

gv = (GridView)findViewById(R.id.gridView1);

//解析数据

getData();

//监听事件

gv.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

//

Intent intent=new Intent(MainActivity.this,SecondActivity.class);

intent.putExtra(“names”, list.get(position));

startActivity(intent);

}

});

}

private void getData() {

//创建内部类

new Thread(){

public void run() {

String json = EntWorkUtils.getStr();

Gson gson=new Gson();

Goods json2 = gson.fromJson(json, Goods.class);

List<Data> list=json2.data;

Message msg=Message.obtain();

msg.obj=list;

hand.sendMessage(msg);

};

}.start();

}

8.MyAdapter适配器类

package com.baway.adapter;

import java.util.List;

import com.baway.bean.Goods;

import com.baway.bean.Goods.Data;

import com.baway.test.R;

import com.nostra13.universalimageloader.core.ImageLoader;

import android.content.Context;

import android.os.Handler;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.TextView;

public class MyAdapter extends BaseAdapter {

Context context;

List<Data> list;

public MyAdapter(Context context, List<Data> list) {

this.context=context;

this.list=list;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return list.size();

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return null;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return 0;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

//优化

ViewHolder holder;

if(convertView==null){

holder=new ViewHolder();

convertView=View.inflate(context, R.layout.gv_item, null);

holder.imageView1=(ImageView) convertView.findViewById(R.id.imageView1);

holder.tcontent_info=(TextView) convertView.findViewById(R.id.tcontent_info);

holder.imageView2=(ImageView) convertView.findViewById(R.id.imageView2);

convertView.setTag(holder);

}else{

holder=(ViewHolder) convertView.getTag();

}

holder.tcontent_info.setText(list.get(position).content_info);

ImageLoader.getInstance().displayImage(list.get(position).img, holder.imageView1);

ImageLoader.getInstance().displayImage(list.get(position).head_img, holder.imageView2);

return convertView;

}

class ViewHolder{

ImageView imageView1;

TextView tcontent_info;

ImageView imageView2;

}

}

9.SecondActivity类

package com.baway.test;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.List;

import java.util.Timer;

import java.util.TimerTask;

import com.baway.adapter.MyAdapter;

import com.baway.adapter.MyPageadapter;

import com.baway.bean.Goods;

import com.baway.bean.Goods.Data;

import com.baway.bean.Goods.Data.Like_user_list;

import com.baway.utils.EntWorkUtils;

import com.google.gson.Gson;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.app.Activity;

import android.content.Intent;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.Menu;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.LinearLayout.LayoutParams;

public class SecondActivity extends Activity {

private ViewPager vp;

private List<Like_user_list> like_user_list=new ArrayList<Like_user_list>();

private LinearLayout lin;

List<ImageView> ivlist = new ArrayList<ImageView>();;

private ImageView iv;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

//接受传值

Intent intent = getIntent();

Data data =(Data) intent.getSerializableExtra(“names”);

like_user_list=data.like_user_list;

//控件

vp = (ViewPager)findViewById(R.id.vp);

lin = (LinearLayout)findViewById(R.id.lin);

lin.getBackground().setAlpha(150);

//适配器

vp.setAdapter(new MyPageadapter(SecondActivity.this,like_user_list));

dotData();

vp.setCurrentItem(100000);

setTimer();

//监听事件

vp.setOnPageChangeListener(new OnPageChangeListener() {

@Override

public void onPageSelected(int arg0) {

for (int i = 0; i < like_user_list.size(); i++) {

if(i==arg0%like_user_list.size()){

ivlist.get(arg0%like_user_list.size()).setImageResource(R.drawable.dot_selected);

}else{

ivlist.get(i).setImageResource(R.drawable.dot_normal);

}

}

}

@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

}

});

}

private void dotData() {

if(ivlist!=null){

ivlist.clear();

}

for (int i = 0; i < like_user_list.size(); i++) {

iv = new ImageView(this);

if(i==0){

//同步

iv.setImageResource(R.drawable.dot_selected);

}else{

iv.setImageResource(R.drawable.dot_normal);

}

ivlist.add(iv);

LayoutParams params=new LayoutParams(20, 20);

params.setMargins(12, 0, 12, 0);

lin.addView(iv, params);

}

private void setTimer() {

Timer tim=new Timer();

tim.schedule(new TimerTask() {

@Override

public void run() {

runOnUiThread(new Runnable() {

public void run() {

int item = vp.getCurrentItem();

item++;

vp.setCurrentItem(item);

}

});

}

}, 3000, 2000);

}

10.MyPageadapter适配器类

package com.baway.adapter;

import java.util.List;

import com.baway.bean.Goods.Data.Like_user_list;

import com.nostra13.universalimageloader.core.ImageLoader;

import android.content.Context;

import android.support.v4.view.PagerAdapter;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ImageView;

import android.widget.ImageView.ScaleType;

public class MyPageadapter extends PagerAdapter {

Context context;

List<Like_user_list> like_user_list;

public MyPageadapter(Context context,

List<Like_user_list> like_user_list) {

this.context=context;

this.like_user_list=like_user_list;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return Integer.MAX_VALUE;

}

@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) {

container.removeView((View) object);

}

@Override

public Object instantiateItem(ViewGroup container, int position) {

ImageView iv=new ImageView(context);

ScaleType scaleType=ScaleType.CENTER;

iv.setScaleType(scaleType);

ImageLoader.getInstance().displayImage(like_user_list.get(position%like_user_list.size()).head_img, iv);

container.addView(iv);

return iv;

}

}

原文链接：https://blog.csdn.net/jsx9057/article/details/51381385

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