Ultra-Simple Single-choice listview mode SingleMode (custom listview item) and listviewsinglemode

Ultra-Simple Single-choice listview mode SingleMode (custom listview item) and listviewsinglemode

Source: https://stackoverflow.com/questions/8337180/custom-single-choice-listview/12823457#12823457

1. Set in listview item

<span style="font-size:18px;"><RadioButton     android:id="@+id/radio1"     android:checked="false"     android:focusable="false"     android:clickable="false" /></span>

Set checked focusable clickable to false

2. Set ListView

<ListView    android:id="@android:id/list"    android:choiceMode="singleChoice"    android:descendantFocusability="beforeDescendants"/>

3. Set in the Custom adapter

int selectedIndex = -1;public void setSelectedIndex(int index){    selectedIndex = index;}@Overridepublic 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. Set the onItemClickListener of the list in the activity.

 mList.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                mChangeAdapter.setSelectedIndex(position);                mChangeAdapter.notifyDataSetChanged();            }        });

5. Optional. The storage option is in the database. The selected item is still set to the selected status when the selected item is opened for the second time.

 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);        }

In the activity, set the selected item to the selected state before setAdapter.

   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;            }        }    }