我正在尝试使 ExpandableListView
根据项目类型使用两种不同的布局。在这个时候我做了基本的功能,除了一件事:
在 listview
中选择组后,子项的文本显示错误(不同项的文本混合)
我的适配器
源代码如下:
SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter(
this,
groupData,
com.oleg.mart.foreign.R.layout.group_row,
groupFrom,
new int[] { com.oleg.mart.foreign.R.id.Group },
childData,
R.layout.simple_list_item_1,
childFrom,
childTo)
{
@Override
public int getChildTypeCount() {
return 2;
}
/*@Override
public int getChildrenCount(int groupPosition)
{
return childData.get(groupPosition).size();
} */
@Override
public int getChildType(int groupPosition, int childPosition)
{
int result = 0;
if (childPosition == getChildrenCount(groupPosition) - 1)
result = 1;
return result;
}
@Override
public View getChildView (
int groupPosition, int childPosition,
boolean isLastChild,
View convertView, ViewGroup parent)
{
if (convertView == null) {
TextView textView = null;
LayoutInflater inflater = (LayoutInflater)getSystemService(getBaseContext().LAYOUT_INFLATER_SERVICE);
int itemType = getChildType(groupPosition,childPosition);
String myText = childData.get(groupPosition).get(childPosition).get("chapter");
switch (itemType) {
case 0:
convertView = inflater.inflate(com.oleg.mart.foreign.R.layout.child_row_notlast, null);
textView = (TextView)convertView.findViewById(com.oleg.mart.foreign.R.id.NChild);
textView.setPadding(30,20,30,20);
textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 15);
textView.setText(Html.fromHtml(myText));
break;
case 1:
convertView = inflater.inflate(com.oleg.mart.foreign.R.layout.child_row, null);
textView = (TextView)convertView.findViewById(com.oleg.mart.foreign.R.id.Child);
textView.setPadding(30,20,30,20);
textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 15);
textView.setText(Html.fromHtml(myText));
break;
}
}
return convertView;
}
};
如您所见,我正在尝试为最后一个子项设置不同的样式。有什么问题吗?
对getChildView
方法:
TextView textView = null;
String myText = null;
myText = childData.get(groupPosition).get(childPosition).get("chapter");
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater)getSystemService(getBaseContext().LAYOUT_INFLATER_SERVICE);
int itemType = getChildType(groupPosition,childPosition);
switch (itemType) {
case 0:
convertView = inflater.inflate(com.oleg.mart.foreign.R.layout.child_row_notlast, null);
break;
case 1:
convertView = inflater.inflate(com.oleg.mart.foreign.R.layout.child_row, null);
break;
}
}
textView = (TextView)convertView.findViewById(com.oleg.mart.foreign.R.id.NChild);
textView.setPadding(30,20,30,20);
textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 15);
textView.setText(Html.fromHtml(myText));
return convertView;
最佳答案
我敢肯定,当 getChildView 方法上的 convertView != null 时,您不会返回正确的子值。 尝试根据您的条件设置您的值,就像这样:
TextView textView = null;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater)getSystemService(getBaseContext().LAYOUT_INFLATER_SERVICE);
int itemType = getChildType(groupPosition,childPosition);
String myText = childData.get(groupPosition).get(childPosition).get("chapter");
switch (itemType) {
case 0:
convertView = inflater.inflate(com.oleg.mart.foreign.R.layout.child_row_notlast, null);
break;
case 1:
convertView = inflater.inflate(com.oleg.mart.foreign.R.layout.child_row, null);
break;
}
}
textView = (TextView)convertView.findViewById(com.oleg.mart.foreign.R.id.NChild);
textView.setPadding(30,20,30,20);
textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 15);
textView.setText(Html.fromHtml(myText));
如果您对此仍有疑问,请对我的回答发表评论告诉我,我会看看我能做些什么。
关于android - 在 ExpandableListView 中对子项使用两种不同的布局,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12286235/