我已经检查了所有重复的问题。但是我没有找到解决方案。如果我的问题不正确,请纠正我。
我有带有label(用于标题)和textview(用于描述)的自定义单元格。我正在尝试可扩展单元。首先,它将仅显示标题,当我点击时,它将显示描述。因此,在开始时textview(Description)将被隐藏(我将在cellForRowAtIndexPath
中指定),只要用户触摸在didSelectRowAtIndexPath
函数中检测到的单元格,我都将使其可见,并且我还将更改高度。
我知道我可以使用[tableView reload]
函数调用cellForRowAtIndexPath
。但是我正在使用
[tableView beginUpdates];
[tableView endUpdates];
高度变化时,在
didSelectRowAtIndexPath
的内部进行动画处理。在这里,如果我使用[tableView reload]
,则动画无法正常工作。数据显示完美,但没有动画。- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView beginUpdates];
if ([indexPath compare:self.expandedIndexPath] == NSOrderedSame) {
self.expandedIndexPath = nil;
} else {
self.expandedIndexPath = indexPath;
}
[tableView endUpdates];
}
我希望在
cellForRowAtIndexPath
内部调用didSelectRowAtIndexPath
函数而不影响动画。感谢您的时间(:
我的代码:
#import "MyListViewController.h"
#import "CustomCell.h"
@interface MyListViewController ()
@property NSArray* tableData;
@property (strong, nonatomic) NSIndexPath *expandedIndexPath;
@end
@implementation MyListViewController
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.tableData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"SimpleTableItem";
CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.secondary.text = @"adfasdfasdfsdfsdffassssssddalfdsaldjsfadsfasdfdjsfldsjfakldsfjlasfaksfjadksfaldfjladksfjadksfjdkslsdjjlkflasfaljfajfalkflkadslsdfljksdfajsdasdfjlkafsjlkasdjfafsdjadfjksadjsladfjsajladfjslas";
if ([indexPath compare:self.expandedIndexPath] == NSOrderedSame) {
cell.primaryLabel.text = [self.tableData objectAtIndex:indexPath.row];
cell.secondary.hidden = NO;
}else{
cell.primaryLabel.text = [self.tableData objectAtIndex:indexPath.row];
cell.secondary.hidden = YES;
}
// cell.textLabel.text = [self.tableData objectAtIndex:indexPath.row];
// cell.imageView.image = [UIImage imageNamed:@"creme_brelee.jpg"];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
//[tableView reloadData];
if ([indexPath compare:self.expandedIndexPath] == NSOrderedSame) {
return 100.0; // Expanded height
}
return 30.0; // Normal height
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
if ([indexPath compare:self.expandedIndexPath] == NSOrderedSame) {
self.expandedIndexPath = nil;
} else {
self.expandedIndexPath = indexPath;
}
[tableView endUpdates];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.tableView.delegate=self;
self.tableView.dataSource=self;
self.tableData = [NSArray arrayWithObjects:@"Egg Benedict", @"Mushroom Risotto", @"Full Breakfast", @"Hamburger", @"Ham and Egg Sandwich", @"Creme Brelee", @"White Chocolate Donut", @"Starbucks Coffee", @"Vegetable Curry", @"Instant Noodle with Egg", @"Noodle with BBQ Pork", @"Japanese Noodle with Pork", @"Green Tea", @"Thai Shrimp Cake", @"Angry Birds Cake", @"Ham and Cheese Panini", nil];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
#warning Incomplete implementation, return the number of sections
return 1;
}
@end
最佳答案
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:@[indexpath] withRowAnimation:UITableViewRowAnimationAutomatic];//indexpath of your selected row
[tableView endUpdates];
关于ios - 无法在didSelectRowAtIndexPath中调用cellForRowAtIndexPath而不影响动画?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38116461/