这个 bug 比较诡异,想不出是什么原因,情况是这样的,添加了个 ExpandableListView 的控件,groupCount 为2,childCount分别为2,8,每个childview 中有一个TextView和 RadioButton,当点击第一个 group 中的 childview 中的RadioButton 后再展开第二个group发现其中里面有个RadioButton 已经被选中了。。。对应的Adapter 的代码是很常见的写法,RadioButton 的初始状态也都是unchecked 。但当把两个 group都展开再点击 RadioButton倒没有出现这个 bug,是因为这些RadioButton 在共用地址还是 id 的原因吗?求解~
public class InfoAdapter extends BaseExpandableListAdapter{
private String[][] mChildStrings;
private String[] mGroupStrings;
private OnRbClickListener mOnRbClickListener;
private AppCompatRadioButton childRb1;
private AppCompatRadioButton childRb2;
private Context mContext;
public InfoAdapter(Context context, String[] groupStrings, String[][] childStrings) {
mContext = context;
mGroupStrings = groupStrings;
mChildStrings = childStrings;
}
public void updateData(String[] groupStrings, String[][] childStrings) {
mGroupStrings = groupStrings;
mChildStrings = childStrings;
notifyDataSetChanged();
}
//获取分组个数
@Override
public int getGroupCount() {
return mGroupStrings.length;
}
@Override
public int getChildrenCount(int groupPosition) {
return mChildStrings[groupPosition].length;
}
@Override
public Object getGroup(int groupPosition) {
return mGroupStrings[groupPosition];
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return mChildStrings[groupPosition][childPosition];
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
GroupViewHolder groupViewHolder;
if (convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(R.layout.item_expand_group, parent, false);
groupViewHolder = new GroupViewHolder();
groupViewHolder.tvTitle = (TextView) convertView.findViewById(R.id.label_expand_group);
convertView.setTag(groupViewHolder);
} else {
groupViewHolder = (GroupViewHolder) convertView.getTag();
}
groupViewHolder.tvTitle.setText(mGroupStrings[groupPosition]);
return convertView;
}
@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, final ViewGroup parent) {
final ChildViewHolder childViewHolder;
if (convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(R.layout.item_expand_child, parent, false);
childViewHolder = new ChildViewHolder();
childViewHolder.tvTitle = (TextView) convertView.findViewById(R.id.tv_child);
childViewHolder.mRadioButton = (AppCompatRadioButton) convertView.findViewById(R.id.rb_child);
convertView.setTag(childViewHolder);
} else {
childViewHolder = (ChildViewHolder) convertView.getTag();
}
childViewHolder.tvTitle.setText(mChildStrings[groupPosition][childPosition]);
childViewHolder.mRadioButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Logger.d(v.getId() + "");
Logger.d(groupPosition + "");
if (groupPosition == 0) {
if (childRb1 != null && childRb1 != childViewHolder.mRadioButton) {
childRb1.setChecked(false);
}
if (childRb2 != null){
childRb2.setChecked(false);
}
childRb1 = childViewHolder.mRadioButton;
} else {
if (childRb2 != null && childRb2 != childViewHolder.mRadioButton) {
childRb2.setChecked(false);
}
childRb2 = childViewHolder.mRadioButton;
}
if (mOnRbClickListener != null) {
mOnRbClickListener.onRbClick(groupPosition, childPosition);
}
}
});
// childViewHolder.mCheckBox.setText(childStrings[groupPosition][childPosition]);
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
class GroupViewHolder {
TextView tvTitle;
}
class ChildViewHolder {
TextView tvTitle;
AppCompatRadioButton mRadioButton;
}
public void setOnRbClickListener(OnRbClickListener onRbClickListener) {
mOnRbClickListener = onRbClickListener;
}
//child view radio button click listener
public interface OnRbClickListener {
void onRbClick(int groupPosition, int rbPosition);
}
迷茫2017-04-17 17:36:35
convertView 재사용 문제 때문입니다. 그냥 ConvertView == null만 제거하면 최적화가 더 안 좋아지겠지만 영향은 크지 않을 것입니다