Android 用Json解析请求图片写的一个ViewPager广告轮播 , 带滑动小圆点 ,完美解决了三张图片引起的滑动问题

这是一个通过json解析网络请求的广告轮播，还有自己写的一个小圆点，会跟着图片一块动，滑动流畅，不会出现无响应的情况，喜欢的可以进来看看，希望能帮到你们。这是两个依赖包：compile 'com.github.bumptech.glide:glide:3.7.0'compile 'com.squareup.okhttp3:okhttp:3.5.0'

下面是配置清单需要配置的权限：
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 下面是xml布局：<RelativeLayout
android:layout_width="match_parent"
android:layout_height="240dp">
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="240dp"/>
<LinearLayout
android:id="@+id/mLayou"
android:layout_width="match_parent"
android:layout_height="30dp"
android:orientation="horizontal"
android:gravity="center"
android:layout_alignParentBottom="true"></LinearLayout>
</RelativeLayout>主界面：MainActivityimport android.app.Activity;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.bumptech.glide.Glide;

import java.util.ArrayList;

public class MainActivity extends Activity implements OkUtils.LoadData {
private String path="http://litchiapi.jstv.com/api/getTops?limit=5&column=0&val=F467412B44B421716757A6B2D7635B4A";
private ViewPager mVp;
private LinearLayout mLayout;
private ArrayList<ImageView>views = new ArrayList<>();
private ArrayList<ImageView>dots = new ArrayList<>();
private int currentIndex = 0;
private boolean isTouch = false;
private boolean isAuto = true;
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
if(msg.what == 0){
if(isTouch){
return;
}
currentIndex++;
mVp.setCurrentItem(currentIndex);
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
OkUtils utils=new OkUtils(this,this);
utils.getRequest(path);
thread.start();
}

Thread thread = new Thread(new Runnable() {

public void run() {
while(isAuto){
try {
thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
handler.sendEmptyMessage(0);
}
}
});

private void initView() {
mVp = (ViewPager) findViewById(R.id.viewpager);
mLayout = (LinearLayout) findViewById(R.id.mLayou);
mVp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
currentIndex = mVp.getCurrentItem();
for(int i=0;i<dots.size();i++){
if(position%dots.size()==i){
dots.get(i).setImageResource(R.mipmap.dian1);
}else{
dots.get(i).setImageResource(R.mipmap.dian);
}
}
}

@Override
public void onPageSelected(int position) {

}

@Override
public void onPageScrollStateChanged(int state) {
if(state == ViewPager.SCROLL_STATE_IDLE){
isTouch = false;
}else{
isTouch = true;
}

}
});
}
public void loadData(String json) {
JsonUtils utils = new JsonUtils();
JavaBean pzjson = utils.getJson(json);
if(pzjson!=null && pzjson.getStatus().equals("ok")){
ArrayList<JavaBean.Paramz.Tops>topses = pzjson.getParamz().getTops();
for(int i=0;i<topses.size();i++){
ImageView imageView = new ImageView(this);
imageView.setLayoutParams(new                 ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,                 ViewGroup.LayoutParams.MATCH_PARENT));
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
                Glide.with(this).load("http://litchiapi.jstv.com"+topses.get(i).getPhoto()).into(imageView);
views.add(imageView);

ImageView dot = new ImageView(this);
dot.setLayoutParams(new ViewGroup.LayoutParams(20,20));
dot.setScaleType(ImageView.ScaleType.FIT_XY);
dot.setImageResource(R.mipmap.dian);
mLayout.addView(dot);
dots.add(dot);
}
dots.get(0).setImageResource(R.mipmap.dian1);
}
if(views!=null){
MyPagerAdapter adapter = new MyPagerAdapter();
mVp.setAdapter(adapter);
}
}
class MyPagerAdapter extends PagerAdapter {

@Override
public int getCount() {
if(views.size()>0){
return Integer.MAX_VALUE;
}
return 0;
}

@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
position %= views.size();
ViewGroup group = (ViewGroup) views.get(position).getParent();
if(group!=null){
group.removeView(views.get(position));
}
container.addView(views.get(position));
return views.get(position);
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {

}
}
}

OkUtils（这个是封装的一个Okhttp的网络请求工具类）

import android.content.Context;
import android.net.ConnectivityManager;

import java.io.IOException;
import java.util.concurrent.TimeUnit;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class OkUtils {
private Context context;
private OkHttpClient okClient;
private LoadData loadData;
public OkUtils(Context context,LoadData loadData){
this.context = context;
this.loadData = loadData;
}
public OkHttpClient getOkClient(){
if(okClient==null){
synchronized (this){
if(okClient==null){
okClient = new OkHttpClient.Builder()
.connectTimeout(5, TimeUnit.SECONDS)
.readTimeout(5,TimeUnit.SECONDS)
.build();
}
}
}
return okClient;
}
public boolean isConnected(){
boolean flag = false;
ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if(manager.getActiveNetworkInfo()!= null){
flag = manager.getActiveNetworkInfo().isConnected();
}
return flag;
}

public void getRequest(String path){
if(isConnected()){
OkHttpClient client = getOkClient();
Request request = new Request.Builder()
.url(path)
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException                       {
final String str = response.body().string();
if(str!=null){
((MainActivity)context).runOnUiThread(new Runnable() {
@Override
public void run() {
loadData.loadData(str);
}
});
}
}
});
}
}
public interface LoadData {
void loadData(String json);
}
}

JsonUtils

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;

public class JsonUtils {
public JavaBean getJson(String json){
JavaBean json1=new JavaBean();
try {
JSONObject object = new JSONObject(json);
//            Json.setStatus(object.optString("status"));
json1.setStatus(object.optString("status"));
JavaBean.Paramz paramz = json1.new Paramz();
JSONObject ob1 = object.optJSONObject("paramz");

ArrayList<JavaBean.Paramz.Tops> topses = new ArrayList<>();
JSONArray array = ob1.optJSONArray("tops");

for(int i=0;i<array.length();i++){
JSONObject ob2 = array.optJSONObject(i);

int id = ob2.optInt("id");
int oid = ob2.optInt("oid");
String category = ob2.optString("category");
String photo = ob2.optString("photo");
String subject = ob2.optString("subject");
JavaBean.Paramz.Tops tops = paramz.new                    Tops(id,oid,category,photo,subject);
topses.add(tops);
}
paramz.setTops(topses);
json1.setParamz(paramz);
} catch (JSONException e) {
e.printStackTrace();
}
return json1;
}
}

JavaBean

import java.util.ArrayList;

public class JavaBean {
private String status;
private Paramz paramz;

public String getStatus() {
return status;
}

public  void setStatus(String status) {
this.status = status;
}

public Paramz getParamz() {
return paramz;
}

public void setParamz(Paramz paramz) {
this.paramz = paramz;
}

public class Paramz{
private ArrayList<Tops> tops;

public ArrayList<Tops> getTops() {
return tops;
}

public void setTops(ArrayList<Tops> tops) {
this.tops = tops;
}

public class Tops{
private int id;
private int oid;
private String category;
private String photo;
private String subject;

public Tops(int id, int oid, String category, String photo, String subject) {
this.id = id;
this.oid = oid;
this.category = category;
this.photo = photo;
this.subject = subject;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public int getOid() {
return oid;
}

public void setOid(int oid) {
this.oid = oid;
}

public String getCategory() {
return category;
}

public void setCategory(String category) {
this.category = category;
}

public String getPhoto() {
return photo;
}

public void setPhoto(String photo) {
this.photo = photo;
}

public String getSubject() {
return subject;
}

public void setSubject(String subject) {
this.subject = subject;
}
}
}
}