我如何知道从recyclerview中选择的任何镜像？
我如何知道从recyclerview中选择的任何镜像？
提问于 2016-09-16 01:19:07
你好，我有这个json data a link
我将jsonArray解析为
这是一段json，
"im:image":[
{
"label":"http://is1.mzstatic.com/image/thumb/Purple20/v4/87/35/82/87358231-ce91-3d14-b306-95888c23db3c/mzl.gdgtivnk.png/53x53bb-85.png",
"attributes":{
"height":"53"
}
},
{
"label":"http://is5.mzstatic.com/image/thumb/Purple20/v4/87/35/82/87358231-ce91-3d14-b306-95888c23db3c/mzl.gdgtivnk.png/75x75bb-85.png",
"attributes":{
"height":"75"
}
},
{
"label":"http://is3.mzstatic.com/image/thumb/Purple20/v4/87/35/82/87358231-ce91-3d14-b306-95888c23db3c/mzl.gdgtivnk.png/100x100bb-85.png",
"attributes":{
"height":"100"
}
}我像这张照片一样解析它
但是当我点击这里的任何一张图片时，我只得到了这张图片！
我如何解决这个问题?当我点击"snapchat“时，我得到了snap的图像?？
这是解析json的方法。
public void JsonAppShowData() {
final JsonObjectRequest jsonObjectRequest = new JsonObjectRequest( jsonUrl, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) { try {
JSONArray jsonArray = response.getJSONObject(feedKey).getJSONArray(entryKey);
AppShowModule appShowModule = new AppShowModule();
int x = appShowModule.getId();
for (int i = 0; i<jsonArray.length();i++)
{
JSONArray imageArray = response.getJSONObject(feedKey).getJSONArray(entryKey).getJSONObject(i).getJSONArray(imageKey);
for (int j = 0; j < imageArray.length(); j++) {
String image = imageArray.getJSONObject(j).getString(labelKey).toString();
imageUrls.add(image);
appShowModule.setAllimage(imageUrls);
appShowModules.add(appShowModule);
}}
imageRecyclerViewadapter = new ImageListAdapter(appShowModules, getContext(), imageUrls);
AppRecyclerView.setAdapter(imageRecyclerViewadapter);
} catch (JSONException e) {
e.printStackTrace();
}}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e( "LOG", error.toString() );
}
} );这是图像列表加载器
public class ImageListAdapter extends RecyclerView.Adapter<ImageListAdapter.ViewHolder> {
List<AppShowModule> appShowModules;
List<String> imageUrl;
AppShowModule appShowModule;
String x;
Context context;
public ImageListAdapter(List<AppShowModule> appShowModules, Context context ,List<String>imageUrls
){
super();
this.imageUrl =imageUrls;
this.appShowModules = appShowModules;
this.context = context;}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from( parent.getContext() ).inflate( R.layout.imagelayout, parent,false );
ViewHolder viewHolder = new ViewHolder( v );
return viewHolder;}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
AppShowModule appShowModule = appShowModules.get(position);
x = appShowModule.getAllimage().get(position);
Picasso.with(context).load(x).into(holder.appImage);
}
public int getItemCount() {
return imageUrl.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
public ImageView appImage;
public ViewHolder(View itemView) {
super(itemView);
appImage = (ImageView) itemView.findViewById(R.id.appImage);
appImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent= new Intent(context, ImageShow.class);
intent.putExtra("image", x);
context.startActivity(intent);
}});
}
}
}这是单击时将显示的活动
appImage=(ImageView)findViewById(R.id.appImage);
Picasso.with(context).load(x).into(appImage);回答 2
Stack Overflow用户
发布于 2016-09-16 01:32:59
您不能在ViewHolder中直接使用变量'x‘，因为它不会包含所单击项目的图像链接。
要获得正确的链接，必须使用getAdapterPosition().如果单击响应取决于单击的项的位置，则只需从ViewHolder中调用getAdapterPosition()即可。现在我已经展示了如何在ViewHolder中使用它。
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnItemClickListener {
public MyViewHolder(View view) {
super(view);
view.setOnClickListener(this);
}
@Override
public void OnClick(View view) {
// Get the item clicked
// For this example, I'm assuming your data source is of type `List<MyObject>`
MyObject myObject = mDataSource.get(getAdapterPosition());
// Then you can do any actions on it, for example -
myObject.setChecked();
}
}Stack Overflow用户
发布于 2016-09-16 03:58:56
您可以在适配器中为单击的项目定义回调
public interface OnItemClickListener {
void onItemClicked(YourItem item);
}在适配器中为调用片段或活动公开一个方法，以设置侦听器
public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}在绑定您的yourviewholder时，您可以将事件报告回片段或活动，并执行业务逻辑
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
//your binding code
if (onItemClickListener != null) {
onItemClickListener.onItemClicked(item);
}
}在你的片段或活动中
adapter.setOnItemClickListener(new YourAdapter.OnItemClickListener() {
@Override
public void onItemClicked(YourItem item) {
//Business logic goes here
}
});页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/39516874
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