来源:https://stackoverflow.com/questions/8337180/custom-single-choice-listview/12823457#12823457
1.在listview item里面设置
<span style="font-size:18px;"><RadioButton android:id="@+id/radio1" android:checked="false" android:focusable="false" android:clickable="false" /></span>
把checked focusable clickable设置为false
2.设置ListView
<ListView android:id="@android:id/list" android:choiceMode="singleChoice" android:descendantFocusability="beforeDescendants" />
3.在自定义adapter里面设置
int selectedIndex = -1; public void setSelectedIndex(int index){ selectedIndex = index; } @Override public View getView(int position, View convertView, ViewGroup parent) { RadioButton rbSelect = (RadioButton) convertView .findViewById(R.id.radio1); if(selectedIndex == position){ rbSelect.setChecked(true); } else{ rbSelect.setChecked(false); } }
4.在activity设置list的onItemClickListener
mList.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { mChangeAdapter.setSelectedIndex(position); mChangeAdapter.notifyDataSetChanged(); } });
5.可选,存储单选状态在数据库,第二次打开依然把选中的item给设置为选中状态
ChangeBean bean = mData.get(position); mHolder.tv_name.setText(bean.name); if (selectedIndex == position) { mHolder.iv_choice.setChecked(true); bean.setCheck(true); updateData(bean); } else { mHolder.iv_choice.setChecked(false); bean.setCheck(false); updateData(bean); }
然后在activity中在setAdapter之前把选中的item设置为选中状态
mChangeAdapter = new ChangeAdapter(this); mList.setAdapter(mChangeAdapter); initSelect(); mChangeAdapter.refresh(mDatas); addListener(); } private void initSelect() { for (int i = 0; i < mDatas.size(); i++) { if (mDatas.get(i).check){ mChangeAdapter.setSelectedIndex(i); return; } } }
时间: 2024-10-13 00:55:31