Question

我有一个recyclelerview，用于填充来自api的json数据。以下是每个recylerview项project_id，title等中的项目，每个recyclerview都有复选框。

以下是在recyclerview中填充数据的代码。

for (int j = 0, count = data.length(); j < count; j++) {
     String name = json.getString(TAG_PROJECT_ID);
                     PROJECT_ID.add(name);
                     Log.e("array id added",name);
                     String name1 = json.getString(TAG_PROJECT_TITLE);
                    PROJECT_TITLE.add(name1);
}

点击每个recyclerviewitem上的复选框时，我想获得相应项目的project_id。

//click listener
 mCheck.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                         //GET THE PROJECT ID
                       }
)}

更新了实际代码 （为简单起见，我在这里只添加了相关代码）我的Recyclerview适配器

 public class FavouriteManager extends RecyclerView.Adapter<FavouriteManager.RecyclerViewHolder> {
 ArrayList<String> PROJECT_ID;
        ArrayList<String> PROJECT_TITLE;
 @Override
        public RecyclerViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
            v1 = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recyclerview_item, viewGroup, false);
            return new RecyclerViewHolder(v1);
        }

        @Override
        public void onBindViewHolder(final RecyclerViewHolder viewHolder, int i) {
 projecttitle = PROJECT_TITLE.get(i);
 viewHolder.mProjectName.setText(projecttitle);
 @Override
        public int getItemCount() {
            SharedPreferences pref = getContext().getSharedPreferences("MirSP", Context.MODE_PRIVATE);
            set = pref.getStringSet("FAV", null);
            if (set != null) {
                selected = new ArrayList<String>(set);
                Log.e("Item Added", "");
            } else {
                selected = new ArrayList<String>();
            }
            Length = selected.size();
            if (Length == 0) {
                RelativeLayout IMG = (RelativeLayout) getActivity().findViewById(R.id.fav_img);
                IMG.setVisibility(View.VISIBLE);
            }

            return Length;
        }
 public class RecyclerViewHolder extends RecyclerView.ViewHolder {
TextView mProjectName;
CheckBox mCheck;

            RecyclerViewHolder(final View itemView) {
                super(itemView);
                mProjectName = (TextView) itemView.findViewById(R.id.PROJECT_name);
 mCheck = (CheckBox) itemView.findViewById(R.id.PROJECT_fav);
 mCheck.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
int h = getAdapterPosition();
                        if (!offlinejson.equals("")) {
                            try {
                                JSONObject jsonObject = new JSONObject(offlinejson);
                                JSONArray data = jsonObject.getJSONArray(TAG_DATA);
                                JSONObject jsondata = data.getJSONObject(h);
                                Log.e("getCheckedPos(getID)", String.valueOf(jsondata));
                                check = PROJECT_ID.get(h);
                                Log.e("getCheckedPos(getID)", String.valueOf(jsondata));
                                if (selected.contains(check)) {
                                    selected.remove(check);
                                    mCheck.setBackgroundResource(R.drawable.ic_favorite_white1_24dp);
                                    Snackbar snackbar = Snackbar.make(v, "Property Unfavorited", Snackbar.LENGTH_SHORT);
                                    snackbar.show();
                                    notifyItemRemoved(h);
                                    Log.e("FOUND","found");
                                }
 } catch (JSONException e) {
                                e.printStackTrace();
                            }
      }
                });
try {
                        JSONObject jsonObject = new JSONObject(offlinejson);
                        JSONArray data = jsonObject.getJSONArray(TAG_DATA);
                        PROJECT_ID = new ArrayList<String>();
                        PROJECT_TITLE = new ArrayList<String>();

                        for (int j = 0, count = data.length(); j < count; j++) {
                            json = data.getJSONObject(j);
                            //JSONArray jsonArray = new JSONArray(json);
                          //  Log.e("JSON", String.valueOf(json));

                            if (selected.contains(String.valueOf(json.get(TAG_PROJECT_ID)))) {
                                try {
                                    String name = json.getString(TAG_PROJECT_ID);
                                    PROJECT_ID.add(name);
                                    Log.e("array id added",name);
                                    String name1 = json.getString(TAG_PROJECT_TITLE);
                                    PROJECT_TITLE.add(name1);
 } catch (JSONException e) {
                                    e.printStackTrace();
                                }
                            }
                        }

                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }

注意：我不想使用getAdapterPosition（）方法，因为它不适用于我的json结构。

Answer 1

在不同类型的解决方案中，您还可以使用setTag（）和getTag（）。将项目ID设置为复选框，并在需要时获取。

Eg: mCheck.setTag(); //(key,value) or (value).

要获取ID，请使用getTag（）并使用setTag（）设置ID。

http://developer.android.com/reference/android/widget/CheckBox.html

Android：在不使用`getAdapterPosition（）`的情况下获取值recyclelerview项值

1 个答案: