Android中ListView + CheckBox实现单选、多选效果

public class SingleActivity extends AppCompatActivity { private ListView listView; private ArrayList<String> groups; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_single);  listView = (ListView) this.findViewById(R.id.lvGroup);  groups = new ArrayList<String>();  groups.add("11");  groups.add("22");  groups.add("33");  groups.add("44");  groups.add("55");  groups.add("66");  groups.add("77");  AdapterView.OnItemClickListener listItemClickListener = new AdapterView.OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> parent, View view, int position, long id) {    // 取得ViewHolder对象，这样就省去了通过层层的findViewById去实例化我们需要的cb实例的步骤    SingleAdapter.ViewHolder viewHolder = (SingleAdapter.ViewHolder) view.getTag();    viewHolder.cb.toggle();// 把CheckBox的选中状态改为当前状态的反,gridview确保是单一选中   }  };  SingleAdapter adapter = new SingleAdapter(this, groups);  listView.setAdapter(adapter);  listView.setOnItemClickListener(listItemClickListener); }}

public class SingleAdapter extends BaseAdapter { private Activity activity;//上下文 private ArrayList<String> list; private LayoutInflater inflater = null;//导入布局 private int temp = -1; public SingleAdapter(Activity context, ArrayList<String> list) {  this.activity = context;  this.list = list;  inflater = LayoutInflater.from(context); } @Override public int getCount() {  return list.size(); } @Override public Object getItem(int position) {  return list.get(position); } @Override public long getItemId(int position) {  return position; } //listview每显示一行数据,该函数就执行一次 @Override public View getView(int position, View convertView, ViewGroup parent) {  ViewHolder holder = null;  if (convertView == null) {//当第一次加载ListView控件时 convertView为空   convertView = inflater.inflate(R.layout.group_item_view, null);//所以当ListView控件没有滑动时都会执行这条语句   holder = new ViewHolder();   holder.tv = (TextView) convertView.findViewById(R.id.item_tv);   holder.cb = (CheckBox) convertView.findViewById(R.id.item_cb);   convertView.setTag(holder);//为view设置标签  } else {//取出holder   holder = (ViewHolder) convertView.getTag();  }  //设置list的textview显示  holder.tv.setTextColor(Color.WHITE);  holder.tv.setText(list.get(position));  // 根据isSelected来设置checkbox的选中状况  holder.cb.setId(position);//对checkbox的id进行重新设置为当前的position  holder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {   @Override   public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {    if (isChecked) {//实现checkbox的单选功能,同样适用于radiobutton     if (temp != -1) {      //找到上次点击的checkbox,并把它设置为false,对重新选择时可以将以前的关掉      CheckBox tempCheckBox = (CheckBox) activity.findViewById(temp);      if (tempCheckBox != null)       tempCheckBox.setChecked(false);     }     temp = compoundButton.getId();//保存当前选中的checkbox的id值    }   }  });  if (position == temp)//比对position和当前的temp是否一致   holder.cb.setChecked(true);  else   holder.cb.setChecked(false);  return convertView; } public static class ViewHolder {  TextView tv;  CheckBox cb; }}

public class MulActivity extends AppCompatActivity { private ListView listView; private ArrayList<String> groups; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_mul);  listView = (ListView) this.findViewById(R.id.list);  groups = new ArrayList<>();  groups.add("11");  groups.add("22");  groups.add("33");  groups.add("44");  groups.add("55");  groups.add("66");  groups.add("77");  AdapterView.OnItemClickListener listItemClickListener = new AdapterView.OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> parent, View view, int position,         long id) {    // 取得ViewHolder对象，这样就省去了通过层层的findViewById去实例化我们需要的cb实例的步骤    MulAdapter.ViewHolder viewHolder = (MulAdapter.ViewHolder) view.getTag();    viewHolder.cb.toggle();// 把CheckBox的选中状态改为当前状态的反,gridview确保是单一选中    MulAdapter.getIsSelected().put(position, viewHolder.cb.isChecked());//将CheckBox的选中状况记录下来   }  };  MulAdapter adapter = new MulAdapter(this, groups);  listView.setAdapter(adapter);  listView.setOnItemClickListener(listItemClickListener); }}

public class MulAdapter extends BaseAdapter { private Context context;//上下文 private ArrayList<String> list; //控制CheckBox选中情况 private static HashMap<Integer, Boolean> isSelected; private LayoutInflater inflater = null;//导入布局 public MulAdapter(Context context, ArrayList<String> list) {  this.context = context;  this.list = list;  inflater = LayoutInflater.from(context);  isSelected = new HashMap<Integer, Boolean>();  initData(); } private void initData() {//初始化isSelected的数据  for (int i = 0; i < list.size(); i++) {   getIsSelected().put(i, false);  } } @Override public int getCount() {  return list.size(); } @Override public Object getItem(int position) {  return list.get(position); } @Override public long getItemId(int position) {  return position; } //listview每显示一行数据,该函数就执行一次 @Override public View getView(int position, View convertView, ViewGroup parent) {  ViewHolder holder = null;  if (convertView == null) {//当第一次加载ListView控件时 convertView为空   convertView = inflater.inflate(R.layout.group_item_view, null);//所以当ListView控件没有滑动时都会执行这条语句   holder = new ViewHolder();   holder.tv = (TextView) convertView.findViewById(R.id.item_tv);   holder.cb = (CheckBox) convertView.findViewById(R.id.item_cb);   convertView.setTag(holder);//为view设置标签  } else {//取出holder   holder = (ViewHolder) convertView.getTag();//the Object stored in this view as a tag  }  //设置list的textview显示  holder.tv.setTextColor(Color.WHITE);  holder.tv.setText(list.get(position));  // 根据isSelected来设置checkbox的选中状况  holder.cb.setChecked(getIsSelected().get(position));  return convertView; } public static class ViewHolder {  TextView tv;  CheckBox cb; } public static HashMap<Integer, Boolean> getIsSelected() {  return isSelected; } public static void setIsSelected(HashMap<Integer, Boolean> isSelected) {  MulAdapter.isSelected = isSelected; }}