我正在使用 Expandable UITableview由 Tom Fewster 创建。我想使用两个 NSMutableArray 来调整示例,这是一个场景,如果有人想要从 webservice json 数据填充可扩展/折叠 TreeView 表,则需要实现。因此,由于在他的示例中 GroupCell 没有数组,我想知道我该怎么做?请记住,我的 Objective-C 仍然生锈,所以我要问这个问题。
我的尝试只显示组的第一个 ObjectAtIndex:indexPath:0。
我希望能够填充表格并获得这样的输出;
如果您以这种方式更好地理解它,您也可以使用 JSON 数据来解释您的答案。
在这里我想用 JSON 数据填充表格,以便 GroupCell 显示 class_name 和 rowCell 显示 subject_name。这是我从 JSON Web 服务解析的控制台;
(
{
"class_id" = 70;
"class_name" = Kano;
subject = (
"subject_id" = 159;
"subject_name" = "Kano Class";
}
);
},
{
"alarm_cnt" = 0;
"class_id" = 71;
"class_name" = Lagos;
subject = (
"subject_id" = 160;
"subject_name" = "Lagos Class";
}
);
},
{
"alarm_cnt" = 3;
"class_id" = 73;
"class_name" = Nasarawa;
subject = (
"subject_id" = 208;
"subject_name" = "DOMA Class";
},
"subject_id" = 207;
"subject_name" = "EGGON Class";
},
"subject_id" = 206;
"subject_name" = "KARU Class";
},
"subject_id" = 209;
"subject_name" = "LAFIA Class";
},
"subject_id" = 161;
"subject_name" = "Nasarawa State Class";
}
);
},
{
"alarm_cnt" = 2;
"class_id" = 72;
"class_name" = Rivers;
subject = (
"subject_id" = 162;
"subject_name" = "Rivers Class";
}
);
}
)
我试过了,这是我的片段
- (UITableViewCell *)tableViewExpandableTableView *)tableView cellForRowAtIndexPathNSIndexPath *)indexPath
{
静态 NSString *CellIdentifier = @"RowCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSDictionary *d=[_sitesJson objectAtIndex:0] ;
NSArray *arr=[d valueForKey"subject_name"];
NSDictionary *subitems = [arr objectAtIndex:0];
NSLog(@"Subitems: %@", subitems);
NSString *siteName = [NSString stringWithFormat"%@",subitems];
cell.textLabel.text =siteName;
//}
NSLog(@"Row Cell: %@", cell.textLabel.text);
// just change the cells background color to indicate group separation
cell.backgroundView = [[UIView alloc] initWithFrame:CGRectZero];
cell.backgroundView.backgroundColor = [UIColor colorWithRed:232.0/255.0 green:243.0/255.0 blue:1.0 alpha:1.0];
return cell;
}
- (UITableViewCell *)tableViewExpandableTableView *)tableView cellForGroupInSectionNSUInteger)section
{
静态 NSString *CellIdentifier = @"GroupCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UILabel *textLabel = (UILabel *)[cell viewWithTag:2];
NSDictionary *d2 = [_regionsJson objectAtIndex:0];
NSArray *arr2 = [d2 objectForKey"class_name"];
NSString *regions = [[arr2 objectAtIndex:section]objectAtIndex:0];
textLabel.textColor = [UIColor whiteColor];
textLabel.text = [NSString stringWithFormat: @"%@ (%d)", regions, (int)[self tableView:tableView numberOfRowsInSection:section]];
NSLog(@"Group cell label: %@", textLabel.text);
// We add a custom accessory view to indicate expanded and colapsed sections
cell.accessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed"ExpandableAccessoryView"] highlightedImage:[UIImage imageNamed"ExpandableAccessoryView"]];
UIView *accessoryView = cell.accessoryView;
if ([[tableView indexesForExpandedSections] containsIndex:section]) {
accessoryView.transform = CGAffineTransformMakeRotation(M_PI);
} else {
accessoryView.transform = CGAffineTransformMakeRotation(0);
}
return cell;
}
Best Answer-推荐答案 strong>
他,只需要一点点更新一个方法
- (UITableViewCell *)tableViewExpandableTableView *)tableView cellForGroupInSectionNSUInteger)section
{
static NSString *CellIdentifier = @"GroupCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSIndexPath *indexPath;
NSString *regions = [[_dataGroup objectAtIndex:section]objectAtIndex:0];
cell.textLabel.text = [NSString stringWithFormat: @"%@ ", regions];
// We add a custom accessory view to indicate expanded and colapsed sections
cell.accessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed"ExpandableAccessoryView"] highlightedImage:[UIImage imageNamed"ExpandableAccessoryView"]];
UIView *accessoryView = cell.accessoryView;
if ([[tableView indexesForExpandedSections] containsIndex:section]) {
accessoryView.transform = CGAffineTransformMakeRotation(M_PI);
} else {
accessoryView.transform = CGAffineTransformMakeRotation(0);
}
return cell;
}
可以帮到你。
HTH,享受编码!
关于ios - 如何使用objective-c用两个NSMutableArray填充可扩展的TableView,我们在Stack Overflow上找到一个类似的问题:
https://stackoverflow.com/questions/29667542/
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