Question

我已经实现了一个代码，我在使用RecyclerView，其中Item有3个按钮，其中一个是候选名单。我的问题是，如果响应成功，有人点击该按钮，则应更改按钮文本，即短名单，用户无法再次点击。我使用了btnShortlist.setText（＆＃34;入围＆＃34;）并且它无法正常工作

以下是我的班级CardAdapter

public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
private static final String url ="http://192.168.2.110/xp/shortlist1.php";
private static final String url1 = "http://192.168.2.110/xp/express_intrest.php";
private static final String KEY_MATRI_ID_TO="matriID_to";
private static final String KEY_MATRI_ID_BY="matriID_by";

SessionManager session;
public String matri_id_to, matri_id_by, str_gender;
String str;

//Imageloader to load image
private ImageLoader imageLoader;
private Context context;

//List to store all superheroes
List<SuperHero> superHeroes;

//Constructor of this class
public CardAdapter(List<SuperHero> superHeroes, Context context){
    super();
    //Getting all superheroes
    this.superHeroes = superHeroes;
    this.context = context;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.superheroes_list, parent, false);
    // Session class instance
    session = new SessionManager(context);
    session.checkLogin();
    // get user data from session
    HashMap<String, String> user = session.getUserDetails();
    matri_id_by = user.get(SessionManager.KEY_EMAIL);
    str_gender = user.get(SessionManager.KEY_GENDER);

    ViewHolder viewHolder = new ViewHolder(v);
    return viewHolder;
}

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {

    //Getting the particular item from the list
    final SuperHero superHero =  superHeroes.get(position);

    //Loading image from url
    imageLoader = CustomVolleyRequest.getInstance(context).getImageLoader();
    imageLoader.get(superHero.getImageUrl(), ImageLoader.getImageListener(holder.imageView, R.drawable.image, android.R.drawable.ic_dialog_alert));

    holder.imageView.setImageUrl(superHero.getImageUrl(), imageLoader);
    holder.textViewId.setText(superHero.getMglId());
    holder.AgeHeight.setText(superHero.getAgeHeight()+" / "+superHero.getAge());
    holder.Community.setText(superHero.getCommunity()+" / "+superHero.getCaste());
    holder.Occupation.setText(superHero.getOccupation());
    holder.Income.setText(superHero.getIncome());
 //   holder.btnShortlist.setText(superHero.getShortlist());
 //   holder.btnEI.setText(superHero.getExpress_Intrest());

    str = superHero.getShortlist();
    Log.e("sh____________",str);
    if(str.toString().equalsIgnoreCase("shortlisted")) {
        holder.btnShortlist.setText(str);
        holder.btnShortlist.setBackgroundColor(Color.parseColor("#FF0E3671"));
        holder.btnShortlist.setEnabled(false);
    }
    else{
        holder.btnShortlist.setText(str);
    }

    holder.btnShortlist.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            holder.btnShortlist.setText("Wait...");
            matri_id_to = superHero.getMglId();
            holder.shortlist(position);

        }
    });

    holder.btnViewProfile.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent n = new Intent(holder.itemView.getContext(),BlankActivity.class);
            String str_id = holder.textViewId.getText().toString();
            n.putExtra("ID",str_id);
            holder.itemView.getContext().startActivity(n);
        }
    });


    holder.btnEI.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
        }
    });

}

@Override
public int getItemCount() {return superHeroes.size();}

Class ViewHolder

class ViewHolder extends RecyclerView.ViewHolder{
    public NetworkImageView imageView;
    public TextView textViewId;
    public TextView AgeHeight;
    public TextView Community;
    public TextView Occupation;
    public TextView Income;
    public Button btnShortlist;
    public Button btnViewProfile;
    public Button btnEI;

    //Initializing Views
    public ViewHolder(final View itemView) {
        super(itemView);
        imageView = (NetworkImageView) itemView.findViewById(R.id.imageViewHero);
        textViewId = (TextView) itemView.findViewById(R.id.textViewId);
        AgeHeight = (TextView) itemView.findViewById(R.id.AgeHeight);
        Community = (TextView) itemView.findViewById(R.id.Community);
        Occupation = (TextView) itemView.findViewById(R.id.Occupation);
        Income = (TextView) itemView.findViewById(R.id.Income);
        btnShortlist = (Button) itemView.findViewById(R.id.btnshort);
        btnViewProfile = (Button) itemView.findViewById(R.id.buttonViewProfile);
        btnEI = (Button) itemView.findViewById(R.id.btnExpressIntrest);
    }

候选名单

的方法

    private void shortlist(final int position){
        StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                if(response.trim().equalsIgnoreCase("success")) {
                    int selectedPosition = position;
                    btnShortlist.setText("shortlisted");
                    notifyDataSetChanged();
                }
            }
        },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(context, error.toString(), Toast.LENGTH_LONG).show();
                    }
                }) {
            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();
                params.put(KEY_MATRI_ID_BY,matri_id_by);
                params.put(KEY_MATRI_ID_TO,matri_id_to);
                return params;
            }
        };
        RequestQueue requestQueue = Volley.newRequestQueue(context);
        requestQueue.add(stringRequest);
       }
      }
     }

Answer 1

您需要保存在特定行上单击的按钮的状态。与单击按钮一样，您必须更新SuperHero模型上的数据并通知数据集更改。

在RecyclerView的适配器中添加以下方法。

 public SuperHero getItem(int position){
    return superHeroes.get(position);
}

和你的onResponse（字符串响应）方法如下所示。

  if(response.trim().equalsIgnoreCase("success")) {
        SuperHero superhero = adapter.getItem(position);
        superhero.setShortlist("shortlisted");
        notifyDataSetChanged();
    }

其中adapter是您的RecyclerViewAdapter实例。

单击按钮时，RecyclerView项目按钮不会更改按钮的文本

1 个答案: