超簡單的listview單選模式SingleMode（自訂listview item），listviewsinglemode

超簡單的listview單選模式SingleMode（自訂listview item），listviewsinglemode

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

1.在listview item裡面設定

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

把checked focusable clickable設定為false

2.設定ListView

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

3.在自訂adapter裡面設定

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.在activity設定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.可選，儲存單選狀態在資料庫，第二次開啟依然把選中的item給設定為選中狀態

 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);        }

然後在activity中在setAdapter之前把選中的item設定為選中狀態

   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;            }        }    }