Android中ListView包含CheckBox时滑动丢失选中状态的解决

现象：listview 中，如果有10项，其中手机屏幕显示1-6项，其余的7-10项在屏幕中不可见，得向下滚动后才能看到，这个时候，如果选中1、2项，再滚动到7-10项，之后再滚动回来1-6项，就发现1、2项并未被选中。

解决方法: 编写自定义的Adapter

[java] view
plaincopy





public class TestAdapter extends ArrayAdapter<String> {

private int resource;

private LayoutInflater inflater;

private boolean[] checks; //用于保存checkBox的选择状态

public TestAdapter(Context context, int resource, List<String> list) {

super(context, resource, list);

checks = new boolean[list.size()];

this.resource = resource;

inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder holder = null;

if(convertView == null){

convertView = inflater.inflate(resource, null);

holder = new ViewHolder();

holder.title = (TextView) convertView.findViewById(R.id.title);

holder.checkBox = (CheckBox) convertView.findViewById(R.id.checkBox);

convertView.setTag(holder);

}else {

holder = (ViewHolder) convertView.getTag();

}

holder.title.setText(getItem(position));

final int pos = position; //pos必须声明为final

holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {

checks[pos] = isChecked;

}});

holder.checkBox.setChecked(checks[pos]);

return convertView;

}

static class ViewHolder {

TextView title;

CheckBox checkBox;

}

}