I have an ExpandableListView which shows messages, in the childview you can see the text and a button to accept the message that you have read it. When clicking the button I want to change the backgroundcolor of the parentview.
I used a adapter but i dont know how to change the view of the parent in the onclick method of the accept button. Here is my adapter so far:
public class WarningAdapter extends BaseExpandableListAdapter {
public ArrayList<Warning> mWarnings;
public LayoutInflater minflater;
public Fragment fragment;
public Context context;
public WarningAdapter(ArrayList<Warning> warnings){
mWarnings = warnings;
}
public void setInflater(LayoutInflater mInflater, Fragment frag) {
this.minflater = mInflater;
fragment = frag;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return mWarnings.get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
TextView text = null;
Button accept = null;
Button delete = null;
// TODO Auto-generated method stub
if (convertView == null) {
convertView = minflater.inflate(R.layout.warning_details, null);
}
text = (TextView) convertView.findViewById(R.id.tv_warning_text);
accept = (Button) convertView.findViewById(R.id.btn_warning_accept);
delete = (Button) convertView.findViewById(R.id.btn_warning_delete);
accept.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mWarnings.get(groupPosition).setIsRead(true);
}
});
text.setText(mWarnings.get(groupPosition).getMessage());
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return 1;
}
@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return mWarnings.get(groupPosition);
}
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return mWarnings.size();
}
@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
TextView subject = null;
TextView date = null;
ImageView category = null;
LinearLayout background = null;
if (convertView == null) {
convertView = minflater.inflate(R.layout.warning_head, null);
}
subject = (TextView) convertView.findViewById(R.id.tv_warning_subject);
date = (TextView) convertView.findViewById(R.id.tv_warning_date);
category = (ImageView) convertView.findViewById(R.id.img_warning_category);
background = (LinearLayout) convertView.findViewById(R.id.Layout_warning_head);
subject.setText(mWarnings.get(groupPosition).getCategory()+"sub");
date.setText(mWarnings.get(groupPosition).getEntryDate()+"date");
category.setImageResource(R.drawable.ic_launcher);
if(mWarnings.get(groupPosition).getIsRead()){
background.setBackgroundColor(Color.TRANSPARENT);
}
return convertView;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return false;
}
}
edit: I found some way to get it, but its not how I want it. The background only changes when I click a second time on the parent to colapse it. Another try was to call getGroupView inside of the onClick methode but I couldnt get it to work.
您可以尝试:
parent.setBackgroundColor(color);
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