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Pass a NSDictionary as parameter to UITapGestureRecognizer3个
我已经为视图创建了动态UIimage视图和UITapGestureRecognizer,它看起来像这样
我已经为视图创建了动态UIimage视图和UITapGestureRecognizer,它看起来像这样
UIImageView *image = [[UIImageView alloc ] initWithFrame:CGRectMake(x,200,150)];
NSString *ImageURL = [str objectForKey:@"imageLink"];
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:ImageURL]];
image.image = [UIImage imageWithData:imageData];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
singleTap.numberOfTapsrequired = 1;
image.userInteractionEnabled = YES;
[image addGestureRecognizer:singleTap];
[documentory addSubview:image];
和我这样的动作方法
-(void)tapDetected:(UIGestureRecognizer *)recognizer{
NSLog(@"single Tap on imageview");
}
我想传递一个字符串参数到tapDetected方法可以有人告诉我如何做到这一点非常感谢你
解决方法
您可以扩展UITapGestureRecognizer以保存更多数据：
// MYTapGestureRecognizer.h
@interface MYTapGestureRecognizer : UITapGestureRecognizer
@property (nonatomic,strong) NSString *data;
@end
// MYTapGestureRecognizer.m
@implementation MYTapGestureRecognizer
@end
// =====================
....
MYTapGestureRecognizer *singleTap = [[MYTapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
singleTap.data = @"Hello";
.....
// ====================
-(void)tapDetected:(UITapGestureRecognizer *)tapRecognizer {
MYTapGestureRecognizer *tap = (MYTapGestureRecognizer *)tapRecognizer;
NSLog(@"data : %@",tap.data);
}
