更新问题。
我在我的 iOs 7 应用程序中有一个有趣的效果。我正在使用 Storyboard(单元格没有 .xib 文件)这是一个购物车。单击某个单元格内的“+”按钮时,我应该隐藏标签文本并在其上方显示带有 UIPicker、标签和购物车按钮的 UIView。有一些 SECTIONS(不是行)有 1 行(这是为了在单元格之间创建一些空间)。但是,如果我触摸第 2 部分 的加号按钮,第 7 部分 也会受到影响。反之亦然。附上一些截图。
在触摸加号按钮之前
之后
代码
#pragma mark - Table view data source and delegate
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [itemsTitles_ count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"MenuItemCell";
long row = indexPath.section;
MenuItemCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.delegate = self;
cell.itemTitleLabel.text = [itemsTitles_ objectAtIndex:row];
cell.itemDescLabel.text = [itemsDescriptions_ objectAtIndex:row];
cell.itemCostLabel.text = [NSString stringWithFormat:@"Цена: %@ рублей / шт", [itemsCosts_ objectAtIndex:row]];
cell.itemImageIView.image = [UIImage imageNamed:[itemsImages_ objectAtIndex:row]];
[cell.itemImageIView.layer setMasksToBounds:YES];
[cell.itemImageIView.layer setCornerRadius:10.0f];
[cell.layer setCornerRadius:10.0f];
[cell.layer setMasksToBounds:YES];
[cell.layer setBorderWidth:1.0f];
//Some code for horizontal picker
return cell;
}
接下来是我的 MenuItemCell
类的委托(delegate)方法。
- (void)plusButtonTappedOnCell:(id)sender {
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
MenuItemCell *cell = (MenuItemCell *)[self.tableView cellForRowAtIndexPath:indexPath];
[cell.quantityPickerView setHidden:NO];
[cell.itemDescLabel setHidden:YES];
[cell.plusButton setHidden:YES];
}
如果我添加它就有效
[cell.itemDescLabel setHidden:NO];
[cell.plusButton setHidden:NO];
到 (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
。但是如果我添加购物车动画,问题又会出现。仅适用于 1-4 个部分。
我哪里错了?:) 提前致谢。
已添加
第一个问题解决了,谢谢。第二个问题来了。在第一个屏幕截图上,UIImageView 有正常的动画方向(它适用于 1-4 个部分)。但是当我向下滚动时 - 方向变成了 5-7 个部分的直线。 (截图二)
动画代码
UIImageView *imgV = cell.itemImageIView;
CGRect rect = [imgV.superview convertRect:imgV.frame fromView:nil];
rect = CGRectMake(5, (rect.origin.y*-1)-10, imgV.frame.size.width, imgV.frame.size.height);
// create new duplicate image
UIImageView *starView = [[UIImageView alloc] initWithImage:imgV.image];
[starView setFrame:rect];
starView.layer.cornerRadius=10.0f;
[self.view addSubview:starView];
// begin ---- apply position animation
CAKeyframeAnimation *pathAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
pathAnimation.calculationMode = kCAAnimationPaced;
pathAnimation.fillMode = kCAFillModeForwards;
pathAnimation.removedOnCompletion = NO;
pathAnimation.duration=0.65;
pathAnimation.delegate=self;
// tab-bar right side item frame-point = end point
CGPoint endPoint = CGPointMake(210+rect.size.width/2, 390+rect.size.height/2);
CGMutablePathRef curvedPath = CGPathCreateMutable();
CGPathMoveToPoint(curvedPath, NULL, starView.frame.origin.x, starView.frame.origin.y);
CGPathAddCurveToPoint(curvedPath, NULL, endPoint.x, starView.frame.origin.y, endPoint.x, starView.frame.origin.y, endPoint.x, endPoint.y);
pathAnimation.path = curvedPath;
CGPathRelease(curvedPath);
// end ---- apply position animation
// apply transform animation
CABasicAnimation *basic=[CABasicAnimation animationWithKeyPath:@"transform"];
[basic setToValue:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.25, 0.25, 0.25)]];
[basic setAutoreverses:NO];
[basic setDuration:0.65];
[starView.layer addAnimation:pathAnimation forKey:@"curveAnimation"];
[starView.layer addAnimation:basic forKey:@"transform"];
已解决
终点坐标:
float differenceY = 390 - (cell.frame.size.height * (items_.count - indexPath.section));
float endY = (cell.frame.origin.y + cell.frame.size.height/2 < 390) ? 390 : differenceY + cell.frame.origin.y + cell.frame.size.height/2;
CGPoint endPoint = CGPointMake(210+rect.size.width/2, endY +rect.size.height/2);
起点坐标:
CGRect rect = [imgV.superview convertRect:imgV.frame fromView:nil];
rect = CGRectMake(5, cell.frame.origin.y + rect.size.height/2, imgV.frame.size.width, imgV.frame.size.height);
最佳答案
我认为这是重用 UITableViewCell 的问题。 您应该知道哪些项目已被点击,以便您可以切换显示/隐藏 View :cell.quantityPickerView、cell.itemDescLabel、cell.plusButton 在方法 'tableview:cellForRowAtIndexPath:'
中- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = @"MenuItemCell";
MenuItemCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
//Uncomment if the cell is not declared in the storyboard
//if (!cell) {
//cell = [[MenuItemCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
cell.delegate = self;
[cell.itemImageIView.layer setMasksToBounds:YES];
[cell.itemImageIView.layer setCornerRadius:10.0f];
[cell.layer setCornerRadius:10.0f];
[cell.layer setMasksToBounds:YES];
[cell.layer setBorderWidth:1.0f];
//}
MenuItem *menuItem = [self.items objectAtIndex:indexPath.row];
cell.itemTitleLabel.text = menuItem.title;
cell.itemDescLabel.text = menuItem.description;
cell.itemCostLabel.text = [NSString stringWithFormat:@"Цена: %@ рублей / шт", menuItem.cost];
cell.itemImageIView.image = [UIImage imageNamed:menuItem.imageName];
if (menuItem.isSelected) {
cell.quantityPickerView.hidden = NO;
cell.itemDescLabel.hidden = YES;
cell.plusButton.hidden = YES;
}
else {
cell.quantityPickerView.hidden = YES;
cell.itemDescLabel.hidden = NO;
cell.plusButton.hidden = NO;
}
return cell;
}
顺便说一句,为了方便,你应该有一个类:
@interface MenuItem : NSObject
@property (readwrite, nonatomic) BOOL isSelected;
@property (strong, nonatomic) NSString *title;
@property (strong, nonatomic) NSString *description;
@property (strong, nonatomic) NSString *imageName;
@property (strong, nonatomic) NSString *cost;
@end
然后,在方法中:
- (void)plusButtonTappedOnCell:(id)sender {
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
MenuItemCell *cell = (MenuItemCell *)[self.tableView cellForRowAtIndexPath:indexPath];
MenuItem *menuItem = [self.items objectAtIndex:indexPath.row];
if (menuItem.isSelected) {
cell.quantityPickerView.hidden = YES;
cell.itemDescLabel.hidden = NO;
cell.plusButton.hidden = NO;
menuItem.isSelected = NO;
} else {
cell.quantityPickerView.hidden = NO;
cell.itemDescLabel.hidden = YES;
cell.plusButton.hidden = YES;
menuItem.isSelected = YES;
}
}
关于ios - 具有错误的 IndexPath 影响的 UITableViewCells 和动画坐标问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20796648/