我們可以從iOS中滾動查看

Question

我已經通過線加20子視圖scrollview線行

yPos=0; 
    for (int i=0; i<24; i++) { 

    UIView *timeView=[[UIView alloc]initWithFrame:CGRectMake(71, yPos, 909, 60)]; 
    timeView.userInteractionEnabled=TRUE; 
    timeView.exclusiveTouch=YES; 
    timeView.tag=i; 
    NSLog(@"sub vieww tag=:%d",timeView.tag); 
    timeView.backgroundColor=[UIColor whiteColor]; 
    UILabel *lbltime=[[UILabel alloc]initWithFrame:CGRectMake(0, 0, 70, 60)]; 
    lbltime.text=@"VIEW HERE"; 
    lbltime.textColor=[UIColor grayColor]; 
    // [timeView addSubview:lbltime]; 
    [scrlView addSubview:timeView]; 

    yPos=yPos+61; 
} 

現在觸摸子視圖屬性時，曾經我在一個子視圖點擊我沒有得到抽頭子視圖屬性。

like coordinates。這是給父視圖座標

我啓用子視圖UserInteractionEnabled爲是。

任何人可以告訴我如何獲取挖掘子視圖的座標和標籤值嗎？

Answer 1

不要從UIScrollView繼承，這就是爲什麼有手勢識別器。另外，請勿爲每個視圖添加單獨的手勢識別器。

將一個手勢識別器添加到您的滾動視圖中，單擊時使用觸摸的x，y值來計算單擊哪個視圖。 您需要做一個小計算：(y value of the click + UIScrollView y offset)/60。 60是每個視圖的高度。這應該返回點擊視圖的索引。

編輯：

代碼示例：

- (void)viewTapped:(UIGestureRecognizer*)recognizer 
{ 
    CGPoint coords = [recognizer locationInView:recognizer.view]; 
    int clickedViewIndex = (self.offset.y + coords.y)/60; 

    // now clickedViewIndex contains the index of the clicked view 
} 

Answer 2

使類擴展的UIScrollView：

例如：

.h file : 

@protocol CustomScrollViewDelegate <NSObject> 

@optional 
// optional becuase we always don't want to interact with ScrollView 

- (void) customScrollViewTouchesEnded :(NSSet *)touches withEvent:(UIEvent *)event; 

- (void) customScrollViewDidScroll; 


@end 

@interface CustomScrollView : UIScrollView 

@property (weak, nonatomic) id<CustomScrollViewDelegate> touchDelegate; 
// delegate was giving error becuase name is already there in UIScrollView 

@end 

代碼.m文件：

#import "CustomScrollView.h" 

@implementation CustomScrollView 

- (id)initWithFrame:(CGRect)frame 
{ 
    self = [super initWithFrame:frame]; 
    if (self) { 
     // Initialization code 
    } 
    return self; 
} 

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    NSLog(@"touchesEnded"); 
    if (!self.dragging) { 
     //NSLog(@"touchesEnded in custom scroll view"); 
     if (_touchDelegate != nil) { 
      if ([_touchDelegate respondsToSelector:@selector(customScrollViewTouchesEnded:withEvent:)]) { 
       [_touchDelegate customScrollViewTouchesEnded:touches withEvent:event]; 
      } 
     } 
    } 

    else { 
     // it wouldn't be called becuase at the time of dragging touches responding stops. 
     [super touchesEnded:touches withEvent:event]; 
    } 

} 

@end 

實現滾動視圖的這種使用子視圖，它會工作

for (UILabel *label in [customScrollView subviews]) { // change name of table here 
    if ([label isKindOfClass:[UILabel class]]) { 
     if (label.tag == savedtag) { // use your tag 
      // write the code as desired 
     } 
    } 
} 

Answer 3

  UIView *v = recognizer.view; 
      int tagNum = [v tag]; 

      Using the tagNum you can do your further operatins. 
     Or v is your object of tapped view. 

    UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)]; 
tap.numberOfTapsRequired = 1; 
[timeview addGestureRecognizer:tap]; 

    Add this in for loop only.