基於URL ID從一個活動傳遞到另一個活動的onclick事件值在recyclerview中出現問題

Question

實際上我的問題是當我單擊Recyclerview項目時，它僅基於使用id在下一個活動中顯示項目數據。但是recyclerview中沒有Onitemclick方法，如何糾正此錯誤，任何人都可以解決此錯誤？

MainActivity.java

    public class MainActivity extends Activity {
    RecyclerView recyclerView;
    List<Your> yourss;
    String Tag_id="category_id";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        recyclerView = (RecyclerView) findViewById(R.id.recycle);
        LinearLayoutManager ll = new LinearLayoutManager(MainActivity.this);
        recyclerView.setHasFixedSize(true);
        recyclerView.setLayoutManager(ll);
        new JsonTask().execute();
    }

    public class JsonTask extends AsyncTask<String, String, List<Your>> {
        @Override
        protected List<Your> doInBackground(String... params) {
            HttpURLConnection httpURLConnection = null;
            BufferedReader bufferedReader = null;
            try {
                URL url = new URL("http://yoursubshop.com/webservices/categories.php");
                httpURLConnection = (HttpURLConnection) url.openConnection();
                InputStreamReader inputStreamReader = new InputStreamReader(httpURLConnection.getInputStream());
                bufferedReader = new BufferedReader(inputStreamReader);
                StringBuffer sb = new StringBuffer();
                String line = "";
                while ((line = bufferedReader.readLine()) != null) {
                    sb.append(line);
                }
                String finaljson = sb.toString();
                JSONObject firstobject = new JSONObject(finaljson);
                JSONArray firstarray = firstobject.getJSONArray("data");
                List<Your> yo = new ArrayList<>();
                for (int i = 0; i < firstarray.length(); i++) {
                    JSONObject finalobject = firstarray.getJSONObject(i);
                    Your yos = new Your();
                    yos.category_id = finalobject.getString("Tag_id");
                    yos.category_name = finalobject.getString("category_name");
                    yo.add(yos);
                }
                return yo;
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (JSONException e) {
                e.printStackTrace();
            } finally {
                if (httpURLConnection != null) {
                    httpURLConnection.disconnect();
                }
                try {
                    if (bufferedReader != null) {

                        bufferedReader.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return null;
        }

        @Override
        protected void onPostExecute(List<Your> result) {
            super.onPostExecute(result);
            Rvadapter listAdapter = new Rvadapter(MainActivity.this, result);
            recyclerView.setAdapter(listAdapter);
              recyclerView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent i = new         Intent(MainActivity.this,SeconActivity.class);
                    i.putExtra("data",Tag_id);
                    startActivity(i);
                }
            });
        }
    }

    public class Rvadapter extends RecyclerView.Adapter<Rvadapter.Myadapter> {
        List<Your> yours = Collections.emptyList();
        Context c;
        public class Myadapter extends RecyclerView.ViewHolder {
            TextView id;
            TextView name;
            CardView cv;
            public Myadapter(final View itemView) {
                super(itemView);
                id = (TextView) itemView.findViewById(R.id.texts);
                name = (TextView) itemView.findViewById(R.id.textsa);
                cv = (CardView)itemView.findViewById(R.id.card);

            }
        }
        public Rvadapter(Context c, List<Your> yours) {
            this.yours = yours;
            this.c = c;
        }
        @Override
        public Myadapter onCreateViewHolder(ViewGroup parent, int viewType) {
            View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.lists, parent, false);
            Myadapter m = new Myadapter(v);
            return m;
        }

        @Override
        public void onBindViewHolder(Myadapter holder, int position) {
            Your  y = yours.get(position);
            holder.id.setText(y.category_id);
            holder.name.setText(y.category_name);
        }

        @Override
        public int getItemCount() {
            return yours == null ? 0 : yours.size();
        }

        @Override
        public void onAttachedToRecyclerView(RecyclerView recyclerView) {
            super.onAttachedToRecyclerView(recyclerView);
        }
    }
   }

SecondActivity.java

    public class SeconActivity extends Activity 
    {
    RecyclerView recyclerView;
    List<Shop> shops;
    String serverUrl = "http://yoursubshop.com/webservices/categories-shop.php?category=";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.seocnd_main);
        recyclerView = (RecyclerView) findViewById(R.id.secondmain);
        LinearLayoutManager ll = new LinearLayoutManager(SeconActivity.this);
        recyclerView.setHasFixedSize(true);
        recyclerView.setLayoutManager(ll);
        Intent in = getIntent();
        String serverUrlId = in.getStringExtra("data");
        serverUrl = serverUrl.concat(serverUrlId);
        new JsonTask().execute();
    }
    public class JsonTask extends AsyncTask<String, String, List<Shop>> {
        @Override
        protected List<Shop> doInBackground(String... params) {
            HttpURLConnection httpURLConnection = null;
            BufferedReader bufferedReader = null;
            try {
                URL url = new URL(serverUrl);
                httpURLConnection = (HttpURLConnection) url.openConnection();
                InputStreamReader inputStreamReader = new InputStreamReader(httpURLConnection.getInputStream());
                bufferedReader = new BufferedReader(inputStreamReader);
                StringBuffer sb = new StringBuffer();
                String line = "";
                while ((line = bufferedReader.readLine()) != null) {
                    sb.append(line);
                }
                String finaljson = sb.toString();
                JSONObject firstobject = new JSONObject(finaljson);
                JSONArray firstarray = firstobject.getJSONArray("data");
                List<Shop> yo = new ArrayList<>();
                for (int i = 0; i < firstarray.length(); i++) {
                    JSONObject finalobject = firstarray.getJSONObject(i);
                    Shop yos = new Shop();
                    yos.shop_id = finalobject.getString("shop_id");
                    yos.shop_name= finalobject.getString("shop_name");
                    yo.add(yos);
                }
                return yo;
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (JSONException e) {
                e.printStackTrace();
            } finally {
                if (httpURLConnection != null) {
                    httpURLConnection.disconnect();
                }
                try {
                    if (bufferedReader != null) {

                        bufferedReader.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return null;
        }

        @Override
        protected void onPostExecute(List<Shop> result) {
            super.onPostExecute(result);
            Rvadapter listAdapter = new Rvadapter(SeconActivity.this, result);
            recyclerView.setAdapter(listAdapter);

        }
    }

    public class Rvadapter extends RecyclerView.Adapter<Rvadapter.Myadapter> {
        List<Shop> yours = Collections.emptyList();
        Context c;
        public class Myadapter extends RecyclerView.ViewHolder {
            TextView id;
            TextView name;
            CardView cv;
            public Myadapter(final View itemView) {
                super(itemView);
                id = (TextView) itemView.findViewById(R.id.shopt);
                name = (TextView) itemView.findViewById(R.id.shopr);
                cv = (CardView)itemView.findViewById(R.id.card);

            }
        }
        public Rvadapter(Context c, List<Shop> yours) {
            this.yours = yours;
            this.c = c;
        }
        @Override
        public Myadapter onCreateViewHolder(ViewGroup parent, int viewType) {
            View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.shopss, parent, false);
            Myadapter m = new Myadapter(v);
            return m;
        }

        @Override
        public void onBindViewHolder(Myadapter holder, int position) {
            Shop  y = yours.get(position);
            holder.id.setText(y.shop_id);
            holder.name.setText(y.shop_name);
        }

        @Override
        public int getItemCount() {
            return yours == null ? 0 : yours.size();
        }

        @Override
        public void onAttachedToRecyclerView(RecyclerView recyclerView) {
            super.onAttachedToRecyclerView(recyclerView);
        }
    }
}

Answer 1

將Click偵聽器設置為項目布局的根視圖，然后更改onBindViewHolder()方法

@Override
        public void onBindViewHolder(Myadapter holder, int position) {
            Shop  y = yours.get(position);
            holder.id.setText(y.shop_id);
            holder.name.setText(y.shop_name);

            holder.ROOT_VIEW.setTag(position); // here ROOT_VIEW is your inflated layout root 
            holder.ROOT_VIEW.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int pos = (int) v.getTag(); // use this pos to get this perticular view related data
                    Intent i = new Intent(MainActivity.this,SeconActivity.class);
                    i.putExtra("data",Tag_id);
                    startActivity(i);
                }
            });
        }

在您的holder類中聲明ROOT_VIEW，通過pos從您的列表中獲取tag_id或您擁有的內容

Answer 2

public class Rvadapter extends RecyclerView.Adapter<Rvadapter.Myadapter> implements View.OnClicklistener{
        List<Your> yours = Collections.emptyList();
        Context c;
        public class My
        private int CURRENT_POSITION = 0;

        public class Myadapter extends RecyclerView.ViewHolder  {

            TextView id;
            TextView name;
            CardView cv;
            public Myadapter(final View itemView) {
                super(itemView);
                id = (TextView) itemView.findViewById(R.id.texts);
                name = (TextView) itemView.findViewById(R.id.textsa);
                cv = (CardView)itemView.findViewById(R.id.card);
                cv.setOnClicklistener(this);
            }
        }


        ...

        @Override
        public void onBindViewHolder(Myadapter holder, int position) {
        CURRENT_POSITION = position;
        ...
        //your code
        }


        @Override
        public void onClick(View view){

                Your y = yours.get(CURRENT_POSITION);
                if(y != null){}
                    Intent i = new Intent(this, ,SeconActivity.class);
                    i.putExtra("id", y.category_id);
                    startActivity(i);
                }
        }

        ...
        //your code
}

在第二個活動中，從意圖中獲取類別ID，並從中獲取詳細信息。