我无法通过JSON将图片加载到应用程序中。一世 可以加载所有内容，但缺少图片。
我更新了完整的文件，无论问题出在哪里，您都可以看到。 非常感谢
这是解析json数据的文件。正如一些建议所说，我尝试使用Glide。无法正常工作，因为我不知道glide.with（mcontext）->给我一个错误可以解析符号mcontext
包com.example.administrator.superclass.Activity_User;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.SimpleAdapter;
import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import com.example.administrator.superclass.R;
import com.example.administrator.superclass.User_data;
import com.example.administrator.superclass.Utils.Exlist;
import com.example.administrator.superclass.Utils.Gridmanager;
import com.example.administrator.superclass.Utils.Okhttp_Util;
import com.example.administrator.superclass.Utils.ProgressDialog_Util;
import com.example.administrator.superclass.Utils.Toast_util;
import com.scwang.smartrefresh.layout.SmartRefreshLayout;
import com.scwang.smartrefresh.layout.api.RefreshLayout;
import com.scwang.smartrefresh.layout.listener.OnRefreshListener;
import com.youth.banner.Banner;
import com.youth.banner.loader.ImageLoader;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class Home_home extends Fragment {
private Banner homeBanner;
private RecyclerView homeClassRecy;
Handler handler = new Handler();
Home_class_gs home_class_gs;
Home_class_recy home_class_recy;
Home_descovery_grid_recy home_descovery_grid_recy;
Home_descovery_grid_gs home_descovery_grid_gs;
RecyclerView homeDiscovery;
List<Home_descovery_grid_gs> grid_gsList = new ArrayList<>();
private RelativeLayout homeBookpl;
SmartRefreshLayout smartRefreshLayout;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.home_home, null);
if(!EventBus.getDefault().isRegistered(this)){
EventBus.getDefault().register(this);
}
initView(view);
return view;
}
private void initView(View view) {
homeBookpl = (RelativeLayout) view.findViewById(R.id.home_bookpl);
homeBanner = (Banner) view.findViewById(R.id.home_banner);
homeClassRecy = (RecyclerView) view.findViewById(R.id.home_class_recy);
homeBanner.setDelayTime(5000);
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
homeClassRecy.setLayoutManager(layoutManager);
homeDiscovery = view.findViewById(R.id.home_discovery);
smartRefreshLayout=view.findViewById(R.id.home_smartre);
Gridmanager gridmanager=new Gridmanager(getActivity(),2);
gridmanager.setOrientation(LinearLayoutManager.VERTICAL);
homeDiscovery.setLayoutManager(gridmanager);
homeBookpl.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(getActivity(),Places.class);
startActivity(intent);
}
});
smartRefreshLayout.setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh(@NonNull RefreshLayout refreshLayout) {
initData();
refreshLayout.finishRefresh(2000);
}
});
}
private void initData() {
final Loadbanner loadbanner = new Loadbanner();
new Thread(new Runnable() {
@Override
public void run() {
String addata = Okhttp_Util.Ok_Get(getActivity(),"https://www.superclass.ltd/show_all_advertising.php");
if (!addata.equals("")){
try {
JSONObject adjsonObject = new JSONObject(addata);
JSONArray adjsonArray = adjsonObject.getJSONArray("AD");
final List<String> list = new ArrayList<>();
for (int i = 0; i < adjsonArray.length(); i++) {
list.add((String) adjsonArray.get(i));
}
handler.post(new Runnable() {
@Override
public void run() {
homeBanner.setImageLoader(loadbanner);
homeBanner.setImages(list).start();
}
});
initDescovery();
} catch (JSONException e) {
e.printStackTrace();
}
}else {
handler.post(new Runnable() {
@Override
public void run() {
Toast_util.Toast_show(getActivity(),"网络似乎有问题！");
}
});
}
}
}).start();
}
//轮播初始化
private class Loadbanner extends ImageLoader {
@Override
public void displayImage(Context context, Object path, ImageView imageView) {
try {
Glide.with(getActivity()).load(path).into(imageView);
} catch (Exception e) {
Log.e("轮播", e.toString());
}
}
}
//使用eventbus发送活动内容
public class SetDiscoverydata {
Home_descovery_grid_gs mapdata;
int postion;
public SetDiscoverydata(Home_descovery_grid_gs mapdata,int postion) {
this.mapdata = mapdata;
this.postion=postion;
}
}
//使用eventbus发送课程内容
public class Setcompanyclass {
Home_class_gs companyclassdata;
public Setcompanyclass(Home_class_gs companyclassdata) {
this.companyclassdata = companyclassdata;
}
}
private void initDescovery() {
new Thread(new Runnable() {
@Override
public void run() {
List<Home_class_gs> class_gsList = new ArrayList<>();
String classdata = Okhttp_Util.Ok_Get(getActivity(),"https://www.superclass.ltd/show_fast_class.php");
try {
JSONObject classjsonObject = new JSONObject(classdata);
JSONArray classjsonArray = classjsonObject.getJSONArray("fastclasses");
for (int i = 0; i < classjsonArray.length(); i++) {
JSONObject jsonObject1 = (JSONObject) classjsonArray.get(i);
home_class_gs = new Home_class_gs();
home_class_gs.setAddress(jsonObject1.getString("address"));
home_class_gs.setCompanyimage(jsonObject1.getString("companyimage"));
home_class_gs.setCompanyname(jsonObject1.getString("companyname"));
home_class_gs.setTypename(jsonObject1.getString("typename"));
home_class_gs.setImagepath(jsonObject1.getString("imagepath"));
home_class_gs.setStars(jsonObject1.getString("stars"));
String imagepath = jsonObject1.getString("imagepath");
String coming = jsonObject1.getString("companyimage");
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP) {
Glide.with(mcontext).load(coming).into(home_class_gs);
}
if (!User_data.sxlist.isEmpty()){
if (User_data.sxlist.contains(home_class_gs.getTypename())){
class_gsList.add(home_class_gs);
}
}else {
class_gsList.add(home_class_gs);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
handler.post(new Runnable() {
@Override
public void run() {
home_class_recy = new Home_class_recy(R.layout.item_home_class_recy, class_gsList);
homeClassRecy.setAdapter(home_class_recy);
home_class_recy.setEmptyView(R.layout.empty, homeClassRecy);
home_class_recy.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
EventBus.getDefault().postSticky(new Setcompanyclass(class_gsList.get(position)));
Intent intent = new Intent(getActivity(), Company_class.class);
startActivity(intent);
}
});
}
});
grid_gsList.clear();
try {
HashMap<String, String> hashMap = new HashMap<>();
hashMap.put("username", User_data.user);
String discovery = Okhttp_Util.Ok_Post(getActivity(),"https://www.superclass.ltd/show_discovery.php", hashMap);
JSONObject disjsonobj = new JSONObject(discovery);
JSONArray disjsonarr = disjsonobj.getJSONArray("actors");
for (int i = 0; i < disjsonarr.length(); i++) {
home_descovery_grid_gs = new Home_descovery_grid_gs();
JSONObject dis = (JSONObject) disjsonarr.get(i);
home_descovery_grid_gs.setId(dis.getString("discover_id"));
home_descovery_grid_gs.setTitle(dis.getString("title"));
home_descovery_grid_gs.setAddress(dis.getString("address"));
home_descovery_grid_gs.setDate(dis.getString("date"));
home_descovery_grid_gs.setWhatwedo(dis.getString("whatwedo"));
home_descovery_grid_gs.setWhatyouneed(dis.getString("whatyouneed"));
home_descovery_grid_gs.setWhocanjoin(dis.getString("whocanjoin"));
home_descovery_grid_gs.setImagepath(dis.getString("imagepath"));
home_descovery_grid_gs.setImage_path2(dis.getString("image_path2"));
home_descovery_grid_gs.setImage_path3(dis.getString("image_path3"));
home_descovery_grid_gs.setNumbers(dis.getString("numbers"));
home_descovery_grid_gs.setCompanyname(dis.getString("companyname"));
home_descovery_grid_gs.setTime(dis.getString("time"));
home_descovery_grid_gs.setLike(dis.getString("like"));
home_descovery_grid_gs.setPhone(dis.getString("phone"));
home_descovery_grid_gs.setWebsite(dis.getString("website"));
home_descovery_grid_gs.setCompanyimagepath(dis.getString("companyimagepath"));
home_descovery_grid_gs.setAboutus(dis.getString("aboutus"));
home_descovery_grid_gs.setType(dis.getString("type"));
home_descovery_grid_gs.setArea_name(dis.getString("area_name"));
Log.e("User_data.sxlist: ",User_data.sxlist.toString() );
if (!User_data.sxlist.isEmpty()){
if (User_data.sxlist.contains(home_descovery_grid_gs.getType())){
grid_gsList.add(home_descovery_grid_gs);
User_data.like_descovery.add(grid_gsList);
}
}else {
grid_gsList.add(home_descovery_grid_gs);
User_data.like_descovery.add(grid_gsList);
}
}
handler.post(new Runnable() {
@Override
public void run() {
home_descovery_grid_recy=new Home_descovery_grid_recy(R.layout.item_home_discovery,grid_gsList);
homeDiscovery.setAdapter(home_descovery_grid_recy);
home_descovery_grid_recy.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
Intent intent=new Intent(getContext(),Home_discovery.class);
startActivity(intent);
EventBus.getDefault().postSticky(new SetDiscoverydata(grid_gsList.get(position),position));
}
});
}
});
}catch (Exception e) {
}
}
}).start();
}
@Override
public void onDestroy() {
super.onDestroy();
if (EventBus.getDefault().isRegistered(this))
EventBus.getDefault().unregister(this);
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void GetF_Key(Filter.SendKey data){
if (data.F_key.equals("init")){
initDescovery();
}
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void deletlike(Like_descovery.Deletdeslike data){
for (int i = 0; i < grid_gsList.size(); i++) {
if (data.res.equals(grid_gsList.get(i).getId())){
Log.e( "deletlike: ","a" );
grid_gsList.get(i).setLike("0");
home_descovery_grid_recy.notifyDataSetChanged();
}
}
}
@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
if (isVisibleToUser){
initData();
}
}
}
答案 0 :(得分：1)
解析网址并加载图片-
String url = jsonObj.getString("imagepath")
Glide.with(mContext)
.load(url)
.into(imageView)
或
Picasso.get()
.load(url)
.into(holder.contImg)
答案 1 :(得分：1)
第一个同步gradle文件
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'com.github.bumptech.glide:glide:4.10.0'
第二次将Internet权限放入AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET"/>
第三个也是最后一个定义毕加索或滑行以加载图像。
String comimg = home_class_gs.setImagepath(jsonObject1.getString("companyimage"));
String imgpath = home_class_gs.setImagepath(jsonObject1.getString("imagepath"));
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP) {
Glide.with(mContext)
.load(comimg)
.into(imageView) //Sometime picasso dont load image below 5.0
Glide.with(mContext)
.load(imgpath)
.into(imageView) //Sometime picasso dont load image below 5.0
}else{
Picasso.get()
.load(comimg)
.into(holder.contImg)
Picasso.get()
.load(imgpath)
.into(holder.contImg)
}