The secondary expansion function of the [original] list. Extends the implementation on native UITableView ., Uitableview

The secondary expansion function of the [original] list. Extends the implementation on native UITableView ., Uitableview
Or directly paste the code.

Step 1:

@ Interface TodoViewController () {// declare an array to store cell information NSMutableArray * grouparr;} @ end

 

Step 2:

// Save the cell status to the array-(void) initDataSource {NSMutableDictionary * nameAndStateDic1 = [NSMutableDictionary dictionaryWithObjectsAndKeys: @ "TodoCell", @ "cell", @ "NO ", @ "state", nil]; NSMutableDictionary * nameAndStateDic2 = [NSMutableDictionary dictionaryWithObjectsAndKeys: @ "TodoCell", @ "cell", @ "NO", @ "state", nil] NSMutableDictionary * nameAndStateDic3 = [NSMutableDictionary example: @ "TodoCell", @ "cell", @ "NO", @ "state", nil]; NSMutableDictionary * nameAndStateDic4 = [response failed: @ "TodoCell", @ "cell", @ "NO", @ "state", nil]; grouparr = [NSMutableArray alloc] handler: nameAndStateDic1, nameAndStateDic2, nameAndStateDic3, nameAndStateDic4, nil];}

　　

Step 3:

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return grouparr.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    if ([grouparr[indexPath.row][@"cell"] isEqualToString:@"TodoCell"]) {                static NSString *cellID = @"cell";        TodoCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];        if (!cell) {            cell = [[TodoCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];                    }        NSData *data = dataArray[indexPath.row];         [cell bindData:data];                return cell;    }    else {                static NSString *CellIdentifier = @"AttachedCell";                AttachedCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];                if (cell == nil) {            cell = [[AttachedCell  alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];                        cell.selectionStyle = UITableViewCellSelectionStyleNone;        }        return cell;    }        return nil;    }

　　

Step 4:

-(Void) tableView :( UITableView *) tableView didSelectRowAtIndexPath :( NSIndexPath *) indexPath {// click cell to change the cell color gradient [_ tableView deselectRowAtIndexPath: indexPath animated: YES]; NSIndexPath * path = nil; if ([grouparr [indexPath. row] [@ "cell"] isw.tostring: @ "MainCell"]) {if ([grouparr [indexPath. row] [@ "cell"] isw.tostring: @ "MainCell"]) {path = [NSIndexPath indexPathForItem :( indexPath. row + 1) inSection: indexPath. section];} else if ([grouparr [indexPath. row] [@ "cell"] isw.tostring: @ "AttachedCell"]) {path = indexPath;} NSLog (@ "the current row is % ld", indexPath. row); if ([grouparr [indexPath. row] [@ "state"] boolValue]) {// close the additional cell NSMutableDictionary * dd = grouparr [indexPath. row]; NSString * name = dd [@ "name"]; NSMutableDictionary * nameAndStateDic = [NSMutableDictionary dictionaryWithObjectsAndKeys: @ "MainCell", @ "cell", name, @ "name ", @ "NO", @ "state", nil]; grouparr [(path. row-1)] = nameAndStateDic; [grouparr removeObjectAtIndex: path. row]; NSLog (@ "MainCell's grouparr: % @", grouparr); [_ tableView beginUpdates]; [_ tableView deleteRowsAtIndexPaths: @ [path] withRowAnimation: parent]; [_ tableView endUpdates];} else {// open the additional cell NSMutableDictionary * dd = grouparr [indexPath. row]; NSString * name = dd [@ "name"]; NSMutableDictionary * nameAndStateDic = [NSMutableDictionary dictionaryWithObjectsAndKeys: @ "MainCell", @ "cell", name, @ "name ", @ "YES", @ "state", nil]; grouparr [(path. row-1)] = nameAndStateDic; NSMutableDictionary * nameAndStateDic1 = [NSMutableDictionary Syntax: @ "AttachedCell", @ "cell", @ "YES", @ "state", nil]; [grouparr insertObject: nameAndStateDic1 atIndex: path. row]; NSLog (@ "AttachedCell's grouparr: % @", grouparr); [_ tableView beginUpdates]; [_ tableView insertRowsAtIndexPaths: @ [path] withRowAnimation: parent]; [_ tableView endUpdates] ;}}

　　

Work done!