Android(安卓)ListView带CheckBox实现单选

这个应该是个经常会遇到的需求，网上感觉说的有点太长于是自己抽空干脆记录一下。

用bean记录状态，每次getView的时候去判断这个bean的状态

效果图：

首先是bean：

public class Bean {    private boolean isChecked;    private String msg = "这是一条测试数据";    public Bean(){    }    public Bean(boolean isCheched) {        this.isChecked = isCheched;    }    public boolean isChecked() {        return isChecked;    }    public void setChecked(boolean isChecked) {        this.isChecked = isChecked;    }    public String getMsg() {        return msg;    }    public void setMsg(String msg) {        this.msg = msg;    } }

然后在getView的时候判断状态

public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder mViewHolder;        if(convertView == null){            convertView = mInfater.inflate(R.layout.list_item, null);            mViewHolder = new ViewHolder(convertView);            convertView.setTag(mViewHolder);        }else{            mViewHolder = (ViewHolder) convertView.getTag();        }        mViewHolder.mTextView.setText(mDatas.get(position).getMsg());        if(mDatas.get(position).isChecked()){//状态选中            mViewHolder.mCheckBox.setChecked(true);        }else{            mViewHolder.mCheckBox.setChecked(false);        }        return convertView;    }

这样我们就能通过bean的状态来控制checkBox的选中与否了，但是onItemCLick的时候的操作才是关键

java代码

public class MainActivity extends ActionBarActivity {    private ListView mListView;    private ListAdapter mAdapter;    private List mDatas;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mListView = (ListView) findViewById(R.id.main_listView);        mDatas = new ArrayList();        for (int i = 0; i < 20; i++) {            if(i == 0){//默认选中第一个                mDatas.add(new Bean(true));                continue;            }            mDatas.add(new Bean(false));        }        mAdapter = new ListAdapter(this, mDatas);        mListView.setAdapter(mAdapter);        mListView.setOnItemClickListener(mOnItemClickListener);    }    private final OnItemClickListener mOnItemClickListener = new OnItemClickListener() {        @Override        public void onItemClick(AdapterView<?> adapterView, View view, int position, long arg3) {            for (Bean bean : mDatas) {//全部设为未选中                bean.setChecked(false);            }            mDatas.get(position).setChecked(true);//点击的设为选中            mAdapter.notifyDataSetChanged();        }    };}

XML

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="horizontal" >    <TextView         android:id="@+id/main_list_item_text"        android:layout_width="0dp"        android:layout_height="match_parent"        android:textColor="@android:color/black"        android:layout_weight="1"        android:gravity="center_vertical"        />        <CheckBox         android:id="@+id/main_list_item_checkBox"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center_vertical"        android:backgroundTintMode="multiply"        android:layout_marginRight="10dp"          android:clickable="false"        android:focusableInTouchMode="false"        android:focusable="false"        />LinearLayout>

于是这样ListView的CheckBox就能实现单选了，RecyclerView同理。
以上仅是个人用法，当然也有其他办法实现，看个人的喜好吧

java代码

XML

更多相关文章

随机推荐