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【ios控件】UIScrollView 事件说明
1 // 2 // UIDemoViewController.m 3 // 06-1UIScrollDemo 4 // 5 // Created by k on 14-9-4. 6 // Copyright (c) 2014年 com.akleee.www. All rights reserved. 7 // 8 9 #import "UIDemoViewController.h" 10 11 @interface UIDemoViewController ()<UIScrollViewDelegate> 12 @property (weak, nonatomic) IBOutlet UIScrollView *scrollViw; 13 @property (weak, nonatomic) IBOutlet UIImageView *img; 14 15 - (IBAction)changeOffset:(id)sender; 16 17 18 @end 19 20 @implementation UIDemoViewController 21 22 - (void)viewDidLoad 23 { 24 [super viewDidLoad]; 25 // Do any additional setup after loading the view, typically from a nib. 26 //NSLog(@"%@",NSStringFromCGRect(_img.frame)); 27 28 //设置可移动区域 29 _scrollViw.contentSize=_img.bounds.size; 30 31 //可视窗口位置 32 int moveTop=100,moveLeft=100; 33 34 _scrollViw.contentOffset=CGPointMake(moveTop, moveLeft); 35 36 //可视窗口大小 37 //int windowW=100,windowH=400,windowX=10,windowY=20; 38 // _scrollViw.frame=CGRectMake(windowX, windowY, windowW, windowH); 39 40 //外边距 41 int paddingT=10,paddingL=10,paddingR=20,paddingB=20; 42 43 _scrollViw.contentInset=UIEdgeInsetsMake(paddingT, paddingL, paddingB, paddingR); 44 45 //水平滚动条 46 // _scrollViw.showsHorizontalScrollIndicator=NO; 47 // 48 // //垂直滚动条 49 // _scrollViw.showsVerticalScrollIndicator=NO; 50 51 _scrollViw.delegate=self; 52 53 _scrollViw.maximumZoomScale=2; 54 55 _scrollViw.minimumZoomScale=0.1; 56 57 } 58 59 60 - (void)didReceiveMemoryWarning 61 { 62 [super didReceiveMemoryWarning]; 63 // Dispose of any resources that can be recreated. 64 } 65 -(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{ 66 //开始拖拽 67 //NSLog(@"scrollViewWillBeginDragging %@",NSStringFromCGPoint(scrollView.contentOffset)); 68 69 } 70 -(void)scrollViewDidScroll:(UIScrollView *)scrollView { 71 //正在拖拽 72 //NSLog(@"scrollViewDidScroll %@",NSStringFromCGPoint(scrollView.contentOffset)); 73 } 74 75 76 -(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ 77 //拖拽结束 78 //NSLog(@"scrollViewDidEndDragging %@",NSStringFromCGPoint(scrollView.contentOffset)); 79 } 80 81 -(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{ 82 //拖动后开始滑行 83 //NSLog(@"scrollViewWillBeginDecelerating %@",NSStringFromCGPoint(scrollView.contentOffset)); 84 } 85 -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ 86 87 //拖动后滑行结束 88 //NSLog(@"scrollViewDidEndDecelerating %@",NSStringFromCGPoint(scrollView.contentOffset)); 89 90 } 91 -(void)scrollViewDidScrollToTop:(UIScrollView *)scrollView{ 92 //滑动到下方内容 点击系统顶部导航 自动定位到顶部时触发 93 //NSLog(@"scrollViewDidScrollToTop %@",NSStringFromCGPoint(scrollView.contentOffset)); 94 95 } 96 97 98 -(BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView{ 99 //滑动到下方内容 点击系统顶部导航100 NSLog(@"scrollViewShouldScrollToTop %@",NSStringFromCGPoint(scrollView.contentOffset));101 //返回是否 自动定位到顶部102 return NO;103 }104 105 -(void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{106 // 当触发[_scrollViw setContentOffset:CGPointMake(200, 200) animated:YES];后 触发此事件107 //如果animated:NO的话 不会触发此事件108 //NSLog(@"scrollViewDidEndScrollingAnimation %@",NSStringFromCGPoint(scrollView.contentOffset));109 }110 111 -(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{112 //设置需要缩放的UIView113 // NSLog(@"viewForZoomingInScrollView %@",NSStringFromCGPoint(scrollView.contentOffset));114 115 116 return _img;117 118 }119 120 -(void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view{121 //开始缩放122 NSLog(@"scrollViewWillBeginZooming");123 124 }125 126 -(void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale127 {128 //结束缩放129 NSLog(@"scrollViewDidEndZooming");130 131 132 }133 134 135 136 137 138 - (IBAction)changeOffset:(id)sender {139 NSLog(@"change offset");140 [_scrollViw setContentOffset:CGPointMake(200, 200) animated:NO];141 //_scrollViw .contentOffset=CGPointMake(200, 200);142 }143 @end
【ios控件】UIScrollView 事件说明
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