点击listviewItem后,改变当前Item背景色和字体颜色,其他不变

之前做点击事件时,总是做不好,点着点着所有的Item都变色了,隔壁同事给我说了这方法后,我感觉还挺好用,记录下

这是设置的适配器,直接把代码贴出来了

private class DayAdapter extends BaseAdapter {
        //首先设置一个变量,因为最初没有选择任何Item,所以我设为-1了,如果默认是第一个,也可以设为0
        private int selectedId  = -1;
        @Override
        public int getCount() {
            return timeMapList.length();
        }

        @Override
        public Object getItem(int position) {
            return timeMapList.optJSONObject(position).optString("desc");
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        //这里新写一个方法,用来设置选中的id
        public void setSelectedId(int position) {
            selectedId  = position;
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            final TextView day;
            if (convertView == null) {
                convertView = getLayoutInflater().inflate(R.layout.shareorder_daylist, null);
                day = (TextView) convertView.findViewById(R.id.shareorder_text);
                convertView.setTag(day);
            } else
                day = (TextView) convertView.getTag();

            day.setText(timeMapList.optJSONObject(position).optString("desc"));
            //如果selectedId是当前选择的position,则设置背景及字体颜色
            if (selectedId  == position) {
                day.setBackgroundColor(Color.WHITE);
                day.setTextColor(Color.parseColor("#f53331"));
            } else {
                day.setBackgroundColor(Color.TRANSPARENT);
                day.setTextColor(Color.BLACK);
            }

            return convertView;
        }
    }

接下来只要在点击事件设置一下id,然后刷新数据就可以了

DayAdapter dayAdapter = new DayAdapter();
        listviewDay.setAdapter(dayAdapter);
        listviewDay.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView parent, View view, int position, long id) {
            //将当前选中的position设置为选中的id
                dayAdapter.setSelectedId(position);
                //千万不要忘了刷新数据
                dayAdapter.notifyDataSetInvalidated();
            }
        });

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