Question

我花了好几个小时寻找解决方案，但我尝试过的所有内容都无法正常工作，只会产生与下面代码相同的结果。

我正在尝试onClickListener更改TextView的可见性，但此代码始终设置我点击的那个，然后是下面的另一个。

class EventiAdapter extends ArrayAdapter<CustomEventi> {

    List<CustomEventi> customEventi;
    LayoutInflater inflater;

    EventiAdapter(@NonNull Context context, @LayoutRes int resource, List<CustomEventi> objects) {
        super(context, resource, objects);

        customEventi = objects;
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @NonNull
    @Override
    public View getView(final int position, @Nullable View convertView, @NonNull ViewGroup parent) {

        View view = convertView;
        final EventiViewHolder eventiViewHolder;

        if(view == null) {

            eventiViewHolder = new EventiViewHolder();
            view = inflater.inflate(R.layout.eventi_list, parent, false);

            eventiViewHolder.imageTV = (ImageView) view.findViewById(R.id.image);
            eventiViewHolder.nameTV = (TextView) view.findViewById(R.id.name);
            eventiViewHolder.categoryTV = (TextView) view.findViewById(R.id.category);
            eventiViewHolder.latLngTV = (TextView) view.findViewById(R.id.latLng);
            eventiViewHolder.placeTV = (TextView) view.findViewById(R.id.place);
            eventiViewHolder.dateTV = (TextView) view.findViewById(R.id.date);
            eventiViewHolder.timeTV = (TextView) view.findViewById(R.id.time);;
            eventiViewHolder.viewInfo = (Button) view.findViewById(R.id.viewInfo);
            eventiViewHolder.informationTV = (TextView) view.findViewById(R.id.information);
            eventiViewHolder.mapImage = (ImageView) view.findViewById(R.id.mapImage);

            view.setTag(eventiViewHolder);
        } else {

            eventiViewHolder = (EventiViewHolder) view.getTag();
        }

        eventiViewHolder.viewInfo.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                if(eventiViewHolder.informationTV.getVisibility() == View.VISIBLE) {

                    eventiViewHolder.informationTV.setVisibility(View.GONE);
                    eventiViewHolder.mapImage.setVisibility(View.GONE);
                    eventiViewHolder.viewInfo.setText("VISUALIZZA INFORMAZIONI");
                }
                else {

                    eventiViewHolder.informationTV.setVisibility(View.VISIBLE);
                    eventiViewHolder.mapImage.setVisibility(View.VISIBLE);

                    eventiViewHolder.viewInfo.setText("NASCONDI INFORMAZIONI");
                }
            }
        });

        System.out.println("POSITION: "+position);
        CustomEventi cstEventi = customEventi.get(position);
        eventiViewHolder.setDataIntoViewHolder(cstEventi);

        return view;
    }
}

提前感谢任何试图帮助我的人。

Answer 1

尝试

1。将boolean字段添加到CustomEventi类

private boolean visible;

public boolean isVisible { return visible; }

public void setVisible(boolean visible) { this.visible = visible; }

2. ：用以下代码替换适配器代码：

class EventiAdapter extends ArrayAdapter<CustomEventi> {

    List<CustomEventi> customEventi;
    LayoutInflater inflater;

    EventiAdapter(@NonNull Context context, @LayoutRes int resource, List<CustomEventi> objects) {
        super(context, resource, objects);

        customEventi = objects;
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @NonNull
    @Override
    public View getView(final int position, @Nullable View convertView, @NonNull ViewGroup parent) {

        View view = convertView;
        final EventiViewHolder eventiViewHolder;

        System.out.println("POSITION: "+position);
        CustomEventi cstEventi = customEventi.get(position);

        if(view == null) {

            eventiViewHolder = new EventiViewHolder();
            view = inflater.inflate(R.layout.eventi_list, parent, false);

            eventiViewHolder.imageTV = (ImageView) view.findViewById(R.id.image);
            eventiViewHolder.nameTV = (TextView) view.findViewById(R.id.name);
            eventiViewHolder.categoryTV = (TextView) view.findViewById(R.id.category);
            eventiViewHolder.latLngTV = (TextView) view.findViewById(R.id.latLng);
            eventiViewHolder.placeTV = (TextView) view.findViewById(R.id.place);
            eventiViewHolder.dateTV = (TextView) view.findViewById(R.id.date);
            eventiViewHolder.timeTV = (TextView) view.findViewById(R.id.time);;
            eventiViewHolder.viewInfo = (Button) view.findViewById(R.id.viewInfo);
            eventiViewHolder.informationTV = (TextView) view.findViewById(R.id.information);
            eventiViewHolder.mapImage = (ImageView) view.findViewById(R.id.mapImage);

            view.setTag(eventiViewHolder);
        } else {

            eventiViewHolder = (EventiViewHolder) view.getTag();
        }


        eventiViewHolder.informationTV.setVisibility(cstEventi.isVisible() ? View.VISIBLE : GONE);
        eventiViewHolder.mapImage.setVisibility(cstEventi.isVisible() ? View.VISIBLE : View.GONE);
        eventiViewHolder.viewInfo.setText(cstEventi.isVisible() ? "NASCONDI INFORMAZIONI": "VISUALIZZA INFORMAZIONI");

        eventiViewHolder.viewInfo.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                boolean isVisible = customEventi.isVisible();
                customEventi.setVisible(!isVisible);
                notifyDataSetChanged();
            }
        });

        eventiViewHolder.setDataIntoViewHolder(cstEventi);

        return view;
    }
}

Answer 2

试试这个....

public View getView(final int position, @Nullable View convertView, @NonNull ViewGroup parent) {

    View view = convertView;


    if(view == null) {


        view = inflater.inflate(R.layout.eventi_list, parent,false);

        imageTV = (ImageView) view.findViewById(R.id.image);
        nameTV = (TextView) view.findViewById(R.id.name);
        categoryTV = (TextView) view.findViewById(R.id.category);
        latLngTV = (TextView) view.findViewById(R.id.latLng);
        placeTV = (TextView) view.findViewById(R.id.place);
        dateTV = (TextView) view.findViewById(R.id.date);
        timeTV = (TextView) view.findViewById(R.id.time);;
        viewInfo = (Button) view.findViewById(R.id.viewInfo);
        informationTV = (TextView) view.findViewById(R.id.information);
        mapImage = (ImageView) view.findViewById(R.id.mapImage);



    viewInfo.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            if(informationTV.getVisibility() == View.VISIBLE) {

                informationTV.setVisibility(View.GONE);
                mapImage.setVisibility(View.GONE);
                viewInfo.setText("VISUALIZZA INFORMAZIONI");
            }
            else {

                informationTV.setVisibility(View.VISIBLE);
                mapImage.setVisibility(View.VISIBLE);

                viewInfo.setText("NASCONDI INFORMAZIONI");
            }
        }
    });

    System.out.println("POSITION: "+position);
    CustomEventi cstEventi = customEventi.get(position);
    setDataIntoViewHolder(cstEventi);

    return view;
}

适配器中onClickListener的Android问题

2 个答案: