{"id":568,"date":"2018-02-23T23:40:06","date_gmt":"2018-02-23T15:40:06","guid":{"rendered":"http:\/\/60.205.208.74\/2018\/02\/23\/ios-%e6%bb%9a%e5%8a%a8%e8%a7%86%e5%9b%bescroll-view\/"},"modified":"2018-02-23T23:40:06","modified_gmt":"2018-02-23T15:40:06","slug":"ios-%e6%bb%9a%e5%8a%a8%e8%a7%86%e5%9b%bescroll-view","status":"publish","type":"post","link":"https:\/\/www.puzi7.net\/?p=568","title":{"rendered":"iOS \u6eda\u52a8\u89c6\u56fe(Scroll View)"},"content":{"rendered":"<span itemprop=\"description\"><div class=\"article-body\">\n<div class=\"article-intro\" id=\"content\">\n<h2>\u6eda\u52a8\u89c6\u56fe\u7684\u4f7f\u7528<\/h2>\n<p>\u5982\u679c\u5185\u5bb9\u8d85\u51fa\u5c4f\u5e55\u7684\u5927\u5c0f\u5c31\u4f1a\u4f7f\u7528\u5230\u6eda\u52a8\u89c6\u56fe\u6765\u663e\u793a\u9690\u85cf\u7684\u90e8\u5206\u3002<\/p>\n<p>\u5b83\u53ef\u4ee5\u5305\u542b\u6240\u6709\u7684\u5176\u4ed6\u7528\u6237\u754c\u9762\u5143\u7d20 \u5982\u56fe\u50cf\u89c6\u56fe\u3001 \u6807\u7b7e\u3001 \u6587\u672c\u89c6\u56fe\u751a\u81f3\u53e6\u4e00\u4e2a\u6eda\u52a8\u89c6\u56fe\u3002<\/p>\n<h3>\u91cd\u8981\u7684\u5c5e\u6027<\/h3>\n<ul>\n<li>contentSize<\/li>\n<li>contentInset<\/li>\n<li>contentOffset<\/li>\n<li>delegate<\/li>\n<\/ul>\n<h3>\u91cd\u8981\u7684\u65b9\u6cd5<\/h3>\n<pre>\n- (void)scrollRectToVisible:(CGRect)rect animated:(BOOL)animated\n<\/pre>\n<pre>\n- (void)setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated\n<\/pre>\n<h3>\u91cd\u8981\u7684\u59d4\u6258\u65b9\u6cd5<\/h3>\n<p>\u5728ViewController.h\u4e2d\uff0c\u52a0\u5165<uiscrollviewdelegate>\u6eda\u52a8\u89c6\u56fe\u548c\u58f0\u660e\u6eda\u52a8\u89c6\u56fe\u8ba9\u7c7b\u7b26\u5408\u59d4\u6258\u534f\u8bae\uff0c\u5982\u4e0b\u6240\u793a:<\/uiscrollviewdelegate><\/p>\n<pre>\n#import &lt;UIKit\/UIKit.h&gt;\n\n@interface ViewController : UIViewController&lt;UIScrollViewDelegate&gt;\n{\n    UIScrollView *myScrollView;\n}\u00a0\u00a0\u00a0\u00a0\n\n@end\n<\/pre>\n<p>\u6dfb\u52a0\u81ea\u5b9a\u4e49\u65b9\u6cd5 addScrollView<\/p>\n<pre>\n-(void)addScrollView{\n    myScrollView = [[UIScrollView alloc]initWithFrame:\n    CGRectMake(20, 20, 280, 420)];\n    myScrollView.accessibilityActivationPoint = CGPointMake(100, 100);\n    imgView = [[UIImageView alloc]initWithImage:\n    [UIImage imageNamed:@\"AppleUSA.jpg\"]];\n    [myScrollView addSubview:imgView];\n    myScrollView.minimumZoomScale = 0.5;\n    myScrollView.maximumZoomScale = 3;\n    myScrollView.contentSize = CGSizeMake(imgView.frame.size.width,\n    imgView.frame.size.height);\n    myScrollView.delegate = self;\n    [self.view addSubview:myScrollView];\n}\n<\/pre>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<p>\u6211\u4eec\u5fc5\u987b\u6dfb\u52a0\u4e00\u4e2a\u547d\u540d\u4e3a&#8221;AppleUSA1.jpg&#8221;\u5230\u6211\u4eec\u7684\u9879\u76ee\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u56fe\u50cf\u62d6\u5230\u6211\u4eec\u5bfc\u822a\u533a\u57df\uff0c\u5176\u4e2d\u5217\u51fa\u4e86\u6211\u4eec\u7684\u9879\u76ee\u6587\u4ef6\u6240\u505a\u7684\u56fe\u50cf\u3002\u56fe\u50cf\u5e94\u9ad8\u4e8e\u8bbe\u5907\u7684\u9ad8\u5ea6\u3002<\/p>\n<h3>ViewController.m\u4e2d\u5b9e\u73b0scrollView \u59d4\u6258<\/h3>\n<pre>\n -(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{\n    return imgView;\n}\n-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{\n    NSLog(@\"Did end decelerating\");\n}\u00a0\u00a0\u00a0\u00a0\n-(void)scrollViewDidScroll:(UIScrollView *)scrollView{\n\/\/    NSLog(@\"Did scroll\");\n}\n-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView \n  willDecelerate:(BOOL)decelerate{\n    NSLog(@\"Did end dragging\");\n}\n-(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{\n    NSLog(@\"Did begin decelerating\");\n}\n-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{\n    NSLog(@\"Did begin dragging\");\n}\n<\/pre>\n<h3>\u5728 ViewController.m \u4e2d\u66f4\u65b0 viewDidLoad\uff0c\u5982\u4e0b\u6240\u793a<\/h3>\n<pre>\n(void)viewDidLoad\n{\n   [super viewDidLoad];\n   [self addScrollView];\n   \/\/Do any additional setup after loading the view, typically from a nib\n}\n<\/pre>\n<h3>\u8f93\u51fa<\/h3>\n<p>\u73b0\u5728\u5f53\u6211\u4eec\u8fd0\u884c\u8be5\u5e94\u7528\u7a0b\u5e8f\u6211\u4eec\u4f1a\u770b\u5230\u4e0b\u9762\u7684\u8f93\u51fa\u3002\u4e00\u65e6\u6eda\u52a8\u6eda\u52a8\u89c6\u56fe\uff0c\u5c06\u80fd\u591f\u67e5\u770b\u56fe\u50cf\u7684\u5176\u4f59\u90e8\u5206:<\/p>\n<p>\n<img loading=\"lazy\" decoding=\"async\" class=\"attachment-full\" alt=\"scrollViewOutput\" src=\"http:\/\/www.runoob.com\/wp-content\/uploads\/2013\/11\/scrollViewOutput.jpg\" width=\"558\" height=\"492\">\n<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<span>","protected":false},"excerpt":{"rendered":"<p class=\"excerpt\"><span itemprop=\"description\">\u6eda\u52a8\u89c6\u56fe\u7684\u4f7f\u7528 \u5982\u679c\u5185\u5bb9\u8d85\u51fa\u5c4f\u5e55\u7684\u5927\u5c0f\u5c31\u4f1a\u4f7f\u7528\u5230\u6eda\u52a8\u89c6\u56fe\u6765\u663e\u793a\u9690\u85cf\u7684\u90e8\u5206\u3002 \u5b83\u53ef\u4ee5\u5305\u542b\u6240\u6709&hellip;<\/span><\/p>\n<p class=\"more-link-p btn-align-right\"><a class=\"green zoom-btn\" href=\"https:\/\/www.puzi7.net\/?p=568\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,26],"tags":[74,93],"class_list":["post-568","post","type-post","status-publish","format-standard","hentry","category-ios","category-mobile","tag-ios","tag-mobile","zoom-theme-has-thumb"],"_links":{"self":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/posts\/568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=568"}],"version-history":[{"count":0,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=\/wp\/v2\/posts\/568\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.puzi7.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}