【问】在adapter的getView方法里面对convertView设置点击监听的差别

原创于 2018-09-15 11:28:14 发布 · 697 阅读

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文章标签：

#Android #listview #adapter #convertView设置点击监听

本文探讨了在Android适配器的getView方法中，为何直接为convertView设置点击监听有时会失效，而通过ViewHolder模式则能正常响应点击事件。文章对比了两种不同实现方式的效果，分析了ViewHolder模式下点击监听的正确设置方法。

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下面是我写的两个适配器adapter中的getView方法，第一个给convertView直接设置点击监听不起作用，第二个却可以点击，这是为什么呢？

@Override
    public View getView(final int position, View convertView, ViewGroup viewGroup) {
        ViewHolder viewHolder;
        if (convertView == null) {
            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(context).inflate(R.layout.activity_my_borrow_money_list,viewGroup, false);

            viewHolder.tv2 = convertView.findViewById(R.id.tv_borrow2);
            viewHolder.tv3 = convertView.findViewById(R.id.tv_borrow3);
            viewHolder.tv4 = convertView.findViewById(R.id.tv_borrow4);
            viewHolder.rl = convertView.findViewById(R.id.rl_borrow_money_list);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        String JKStatus = list.get(position).getHkschedule();
        if ("0".equals(JKStatus)){
            viewHolder.tv2.setText("XXX");
            viewHolder.tv2.setTextColor(context.getResources().getColor(R.color.titleColor));
        }else if ("1".equals(JKStatus)){
            viewHolder.tv2.setText("XXX");
            viewHolder.tv2.setTextColor(context.getResources().getColor(R.color.colorc7c7c7));
        }else if ("2".equals(JKStatus)){
            viewHolder.tv2.setText("XXX");
            viewHolder.tv2.setTextColor(context.getResources().getColor(R.color.titleColor));
        }else if ("3".equals(JKStatus)){
            viewHolder.tv2.setText("XXX");
            viewHolder.tv2.setTextColor(context.getResources().getColor(R.color.titleColor));
        }
        viewHolder.tv3.setText(list.get(position).getJkamount());

//        viewHolder.rl.setOnClickListener(new View.OnClickListener() {
//            @Override
//            public void onClick(View v) {
//                Log.e("test","222222");
//                Intent intent = new Intent(context, MyBorrowMoneyXiangqingActivity.class);
//                intent.putExtra("data", list.get(position).getId());
//                context.startActivity(intent);
//            }
//        });
        convertView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.e("test","222222");
                Intent intent = new Intent(context, MyBorrowMoneyXiangqingActivity.class);
                intent.putExtra("data", list.get(position).getId());
                context.startActivity(intent);
            }
        });

        return convertView;
    }

下面这个点击可以跳转

@Override
    public View getView(int postition, View convertView, ViewGroup arg2) {
        ViewHoler viewHolder = null;
        if (convertView == null) {
            viewHolder = new ViewHoler();
            convertView = mInflater.inflate(R.layout.adapter_market, null);
            viewHolder.logo = (ImageView) convertView.findViewById(R.id.logo);
            viewHolder.title = (TextView) convertView.findViewById(R.id.title);
            viewHolder.money_number = (TextView) convertView
                    .findViewById(R.id.money_number);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHoler) convertView.getTag();
        }
        final MarketPojo data = pojo.get(postition);
        ImageLoader.getInstance().displayImage(data.getLogo(),
                viewHolder.logo);
        viewHolder.title.setText(data.getTitle());
        viewHolder.money_number.setText(data.getAdvantage());
        convertView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent(context, ProblemActivity.class);
                intent.putExtra("title", data.getTitle());
                intent.putExtra("url",data.getUrl());
                context.startActivity(intent);
            }
        });
        return convertView;
    }