我的应用程序面临崩溃。类强制转换异常仅发生420 X 800设备解析（KitKat 19 API）。相同的代码在设备的其他分辨率下运行。为什么我只有420 x 800设备分辨率崩溃。
这是我的代码
我在可扩展列表视图中打开网格视图并动态设置网格视图的高度。
public class ExpandableListAdapter extends BaseExpandableListAdapter
{
private Context _context;
private ArrayList<Object> _listDataHeader = new ArrayList<Object>(); // header titles
// child data in format of header title, child title
private HashMap<Object, ArrayList<Object>> _listDataChild = new HashMap<Object, ArrayList<Object>>();
public ExpandableListAdapter(Context context, ArrayList<Object> listDataHeader,
HashMap<Object, ArrayList<Object>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon)
{
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition)
{
return childPosition;
}
public class ViewHolder
{
public TextView _groupTxt = null;
public GridView _subCatGrid;
public GridAdapter _gridAdapter;
public RelativeLayout _subCatll;
public ImageView _catIcon;
public TextView _catCount;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent)
{
if(_listDataHeader.size()>0)
{
try {
CategoryBean catBean = (CategoryBean) _listDataHeader.get(groupPosition);
ArrayList<SubCatBean> beanArrayList = catBean.getChildArrayList();
ViewHolder _viewHolder;
if (convertView == null) {
_viewHolder = new ViewHolder();
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.cat_child_row, null);
_viewHolder._subCatGrid = (GridView) convertView.findViewById(R.id.sub_cat_grid);
_viewHolder._subCatll = (RelativeLayout) convertView.findViewById(R.id.subCatLL);
convertView.setTag(_viewHolder);
} else {
_viewHolder = (ViewHolder) convertView.getTag();
}
System.out.println("group position" + groupPosition);
_viewHolder._gridAdapter = new GridAdapter(getActivity(), beanArrayList);
_viewHolder._subCatGrid.setAdapter(_viewHolder._gridAdapter);
_viewHolder._gridAdapter.notifyDataSetChanged();
//dynamic set hight and width from runtime
_viewHolder._subCatll.measure(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
int height = _viewHolder._subCatll.getMeasuredHeight();
_viewHolder._subCatll.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, height));
} catch (Exception e) {
}
}
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
if(this._listDataChild.get(this._listDataHeader.get(groupPosition)).size()==0)
{
Toast.makeText(this._context, "No Data Found", Toast.LENGTH_SHORT).show();
return 0;
}
else {
return 1;
}
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(final int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
{
if(_listDataHeader.size()>0)
{
try {
CategoryBean bean = (CategoryBean) _listDataHeader.get(groupPosition);
ViewHolder _viewHolder;
if (convertView == null)
{
_viewHolder = new ViewHolder();
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.catlist_row, null);
_viewHolder._groupTxt = (TextView) convertView.findViewById(R.id.catTxt);
_viewHolder._catIcon = (ImageView) convertView.findViewById(R.id.cat_icon);
_viewHolder._catCount = (TextView) convertView.findViewById(R.id.catcount);
convertView.setTag(_viewHolder);
}
else
{
_viewHolder = (ViewHolder) convertView.getTag();
}
_viewHolder._groupTxt.setText(bean.getCatName());
_viewHolder._catCount.setText(String.valueOf(bean.getChildArrayList().size()));
if(isExpanded)
{
if (groupPosition == 0)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.food_and_drinkblue);
}
if (groupPosition == 1)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.computersblue);
}
if (groupPosition == 2)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.computersblue);
}
if (groupPosition == 3)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.tools_and_homeblue);
}
if (groupPosition == 4)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.babiesblue);
}
if (groupPosition == 5)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.autoblue);
}
if (groupPosition == 6)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.clothingsblue);
}
if (groupPosition == 7)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.hairblue);
}
}
else
{
if (groupPosition == 0)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.food_and_drinkgrey);
}
if (groupPosition == 1)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.computersgrey);
}
if (groupPosition == 2)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.computersgrey);
}
if (groupPosition == 3)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.tools_and_homegrey);
}
if (groupPosition == 4)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.babiesgrey);
}
if (groupPosition == 5)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.autogrey);
}
if (groupPosition == 6)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.clothingsgrey);
}
if (groupPosition == 7)
{
_viewHolder._catIcon.setBackgroundResource(R.drawable.hairgrey);
}
}
}
catch (Exception e)
{
}
}
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
public class GridAdapter extends BaseAdapter
{
Activity activity;
private Typeface font;
public ArrayList<SubCatBean> data = new ArrayList<>();
public GridAdapter(Activity activity,ArrayList<SubCatBean> data)
{
this.activity = activity;
this.data = data;
}
public int getCount() {
return data.size();
}
@Override
public Object getItem(int i) {
return data.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
public class ViewHolder
{
public TextView _childBtn = null;
}
@Override
public View getView(final int i,View convertView, ViewGroup viewGroup)
{ // LayoutInflator to call external grid_item.xml file
final SubCatBean bean = (SubCatBean)data.get(i);
try {
ViewHolder view_holder;
if (convertView == null)
{
view_holder = new ViewHolder();
LayoutInflater inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.sub_cat_row, null);
// set value into text view
view_holder._childBtn = (TextView) convertView.findViewById(R.id.childTxt);
convertView.setTag(view_holder);
}
else
{
view_holder = (ViewHolder) convertView.getTag();
}
//------------------------//----------------------------------//
if (data.get(i).getSubCatStatus().equalsIgnoreCase("0"))
{
view_holder._childBtn.setBackgroundResource(R.drawable.grey);
view_holder._childBtn.setTextColor(getResources().getColor(R.color.grey));
bean.setSubCatValue(0);
}
else
{
view_holder._childBtn.setBackgroundResource(R.drawable.blue);
view_holder._childBtn.setTextColor(getResources().getColor(R.color.blue));
bean.setSubCatValue(1);
}
view_holder._childBtn.setText(bean.getSubCatName());
view_holder._childBtn.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
System.out.println("child position" + i);
if(SharedPref.getSharedPrefData(getActivity(),SharedPref.PREFRENCE_KEY_LOGIN).length()==0)
{
if (data.get(i).getSubCatValue() == 0)
{
bean.setSubCatValue(1);
bean.setSubCatStatus("1");
addData.add(bean.getSubCatID());
System.out.println("add value" + bean.getSubCatID());
}
else
{
bean.setSubCatValue(0);
bean.setSubCatStatus("0");
for (int j = 0; j < addData.size(); j++)
{
if (addData.get(j).equals(bean.getSubCatID()))
{
addData.remove(j);
System.out.println("add value remove"+bean.getSubCatID());
}
}
}
}
else
{
if (data.get(i).getSubCatValue() == 0)
{
bean.setSubCatValue(1);
bean.setSubCatStatus("1");
main_valueAfter = String.valueOf(bean.getSubCatID());
true_valueAfter = "1";
}
else
{
bean.setSubCatValue(0);
bean.setSubCatStatus("0");
main_valueAfter = String.valueOf(bean.getSubCatID());
true_valueAfter = "0";
}
callSetCategory();
}
notifyDataSetChanged();
}
});
}catch (Exception e)
{
e.printStackTrace();
}
return convertView;
}
}
我也有调试但是logcat没有提供具有null但在调试点交叉之后崩溃的特定线路＃34; return convertview＆＃34;第二次排队。
这是我的logcat
java.lang.ClassCastException: android.widget.RelativeLayout$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
at android.widget.ListView.setupChild(ListView.java:1826)
at android.widget.ListView.makeAndAddView(ListView.java:1793)
at android.widget.ListView.fillDown(ListView.java:691)
at android.widget.ListView.fillSpecific(ListView.java:1349)
at android.widget.ListView.layoutChildren(ListView.java:1608)
at android.widget.AbsListView.onLayout(AbsListView.java:2087)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14860)
at android.view.ViewGroup.layout(ViewGroup.java:4643)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2013)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1770)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1019)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5725)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer.java:544)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
at android.os.Handler.handleCallback(Handler.java:733)
cat_child_row.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/subCatLL"
android:layout_width="match_parent"
android:layout_height="match_parent">
<GridView
android:id="@+id/sub_cat_grid"
android:layout_width="match_parent"
android:numColumns="3"
android:listSelector="@android:color/transparent"
android:cacheColorHint="@android:color/transparent"
android:layout_height="wrap_content"
>
</GridView>
</RelativeLayout>
sub_cat_row.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:padding="10dp"
android:layout_height="match_parent">
<TextView
android:id="@+id/childTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="10sp"
android:background="@drawable/grey"/>
</RelativeLayout>