一切正常,直到我点击图像 这是我的日志--
2017-06-14 16:58:09.451 Sliders Menu[3136:252131] -[DrinkViewController onButtonTapped:]: unrecognized selector sent to instance 0x7ff025d50cd0 2017-06-14 16:58:09.460 Sliders Menu[3136:252131] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[DrinkViewController onButtonTapped:]: unrecognized selector sent to instance 0x7ff025d50cd0
这是我自定义的cell.m文件(colcell.m)
导入“ColCell.h”
@implementation ColCell
-(void)awakeFromNib {
UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
[tap setNumberOfTapsRequired:1];
[self addGestureRecognizer:tap];
[super awakeFromNib];
}
-(void)onButtonTapped:(id)sender
{
//the response to the gesture.
//mind that this is done in the cell. If you don't want things to happen from this cell.
//then you can still activate this the way you did in your question.
}
这是我的 Collection View 方法
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
ColCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
if(self.iname!=0){
[cell setTag:indexPath.row]; // set tag to the indexPath.row so we can access it later
// add interactivity
UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
[tap setNumberOfTapsRequired:1];
[cell addGestureRecognizer:tap];
NSString *fileName = [NSString stringWithFormat:@"%@",self.iname]; //objectAtIndex:indexPath];
NSLog(@"%@",fileName);
NSString *baseurl=[NSString stringWithFormat:@"http://test.kre8tives.com/barebon/upload/"];
NSDictionary *dict = self.iname[indexPath.row];
NSLog(@"%@", [self.iname objectAtIndex: indexPath.row]);
NSString *paths = [NSString stringWithFormat:@"%@%@", baseurl, dict];
NSLog(@"@@@@%@",paths);
[NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:paths]] queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
NSLog(@"%@",response);
UIImage *imgage = [[UIImage alloc] initWithData:data];
UIImageView *dimg = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,100,100)];
dimg.clipsToBounds = YES;
[cell.dimg setImage:imgage];
if(cell.dimg==!nil)
{
NSLog(@"Not nil");
}
else{
NSLog(@"nil");
}
if(cell.lbl==!nil)
{
NSLog(@"Not nil");
}
else{
NSLog(@"nil");
}
cell.dimg.image=imgage;
cell.lbl.text=[self.tempz objectAtIndex:indexPath.row];
self.catid=[self.categoryid objectAtIndex:indexPath.row];
NSLog(@"%@",[self.iname objectAtIndex:indexPath.row]);
}];
}
//if (cell.selected) {
// cell.backgroundColor = [UIColor blueColor]; // highlight selection
// }
// else
// {
// cell.backgroundColor = [UIColor redColor]; // Default color
// }
return cell;
}
-(void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *datasetCell =[collectionView cellForItemAtIndexPath:indexPath];
datasetCell.backgroundColor = [UIColor redColor]; // Default color
[self performSegueWithIdentifier:@"d2" sender:self];
}
我的目标是执行 segue,点击图像并通过 segue 发送数据,但我的问题是,如果我点击图像,我会收到错误消息,并且我拥有所有连接,并且一切正常 gr8!!
最佳答案
UIImageView *dimg = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,100,100)];
dimg.clipsToBounds = YES;
[cell.dimg setImage:imgage];
[cell.dimg setUserInteractionEnabled:YES];
[cell.dimg setTag:indexPath.row]; // set tag to the indexPath.row so we can access it later
// add interactivity
UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
[tap setNumberOfTapsRequired:1];
[cell.dimg addGestureRecognizer:tap];
并像这样处理 Action
- (void)onButtonTapped:(UITapGestureRecognizer *)gestureRecognizer {
//UIImageView *myImage = (UIImageView *)gestureRecognizer.view;
// do stuff;
NSLog(@"it works");
}
检查 collectionview 委托(delegate)
它不在 didDeselectItemAtIndexPath
-(void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath {
它在 didselectItemAtIndexPath
-(void)collectionView:(UICollectionView *)collectionView didselectItemAtIndexPath:(NSIndexPath *)indexPath {
关于ios - 收藏 View 中的点击手势无法执行,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44543730/