我不知道为什么我的可扩展组件多次调用 getChildView() 和 getGroupView()。该问题会影响应用程序的性能。请帮帮我,这是这个适配器。
public class ResultsExpandableAdapter extends BaseExpandableListAdapter {
private Context mContext;
private ArrayList<TraceGroupObject> groups;
private int displayMode;
private String TAG = "EXPAND LIST NUTRIENT";
public ResultsExpandableAdapter(Context context,
ArrayList<TraceGroupObject> groups, int displayMode) {
this.mContext = context;
this.groups = groups;
this.displayMode = displayMode;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<TraceObject> group = groups.get(groupPosition).getItems();
return group.get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return childPosition;
}
代码getChildView
// bug
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
// Log.i(TAG, "Child View (" + groupPosition + "," + childPosition
// + ") ->" + convertView);
final TraceObject trace = (TraceObject) getChild(groupPosition,
childPosition);
View row;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(mContext.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.expandable_row_item, null);
// Log.i(TAG, "Created View ->" + convertView);
} else
row = convertView;
// init tracebar
...
// implement
return row;
}
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@Override
public int getChildrenCount(int groupPosition) {
ArrayList<TraceObject> rows = groups.get(groupPosition).getItems();
return rows.size();
}
@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return groups.get(groupPosition);
}
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return groups.size();
}
@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}
ac ac getGroupView
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// Log.i(TAG, "Group View "+groupPosition +"->" +convertView);
TraceGroupObject group = (TraceGroupObject) getGroup(groupPosition);
// create view
View row;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(mContext.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.expandable_group_item, null);
// Log.i(TAG, "Created View ->" +convertView);
} else
row = convertView;
// change icon expand
...
return row;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return false;
}