{"rsdb":{"rid":"397208","subhead":"","postdate":"0","aid":"273465","fid":"99","uid":"1","topic":"1","content":"<div id=\"cnblogs_post_body\" class=\"blogpost-body cnblogs-markdown\"> \n <p><\/p>\n <div class=\"toc\">\n  <div class=\"toc-container-header\">\n   \u76ee\u5f55\n  <\/div>\n  <ul>\n   <li><a rel=\"noopener\">\u524d\u8a00<\/a><\/li>\n   <li><a rel=\"noopener\">\u4e00\u3001\u76d1\u542cUITextField \u5185\u5bb9\u53d8\u5316<\/a>\n    <ul>\n     <li><a rel=\"noopener\">1. \u4ee3\u7406<\/a><\/li>\n     <li><a rel=\"noopener\">2. \u901a\u77e5<\/a><\/li>\n     <li><a rel=\"noopener\">3. \u76ee\u6807\u52a8\u4f5c\u4e8b\u4ef6<\/a><\/li>\n    <\/ul><\/li>\n   <li><a rel=\"noopener\">\u4e8c\u3001\u76d1\u542cUITextView\u6587\u672c\u5185\u5bb9\u9ad8\u5ea6\u53d8\u5316<\/a><\/li>\n   <li><a rel=\"noopener\">\u4e09\u3001cell\u4e2d\u7684\u6587\u672c\u6846\uff0c\u5728reloadData or reloadRow\u540e\u5931\u53bb\u7126\u70b9<\/a><\/li>\n   <li><a rel=\"noopener\">\u56db\u3001\u624b\u673a\u53f7\u7801\u3001\u94f6\u884c\u5361\u53f7\u683c\u5f0f\u5316<\/a><\/li>\n  <\/ul>\n <\/div>\n <p><\/p> \n <h2 id=\"\u524d\u8a00\">\u524d\u8a00<\/h2> \n <p>\u672c\u6587\u603b\u7ed3\u4e86\u5728\u4f7f\u7528 UITextField &amp; UITextView \u65f6\u9047\u5230\u7684\u4e00\u4e9b\u95ee\u9898\u53ca\u573a\u666f\uff0c\u4ee5\u53ca\u5bf9\u5e94\u7684\u89e3\u51b3\u65b9\u6848\u3002 \u76ee\u524d\u8986\u76d6\u7684\u9762\u53ef\u80fd\u4e0d\u592a\u5168\uff0c\u540e\u9762\u4f1a\u6301\u7eed\u66f4\u65b0.....<\/p> \n <h2 id=\"\u4e00\u76d1\u542cuitextfield-\u5185\u5bb9\u53d8\u5316\">\u4e00\u3001\u76d1\u542cUITextField \u5185\u5bb9\u53d8\u5316<\/h2> \n <p>\u5df2\u77e5\u4e09\u79cd\u65b9\u5f0f \uff1a<\/p> \n <ul> \n  <li>\u4ee3\u7406\uff1adelegate<\/li> \n  <li>\u901a\u77e5\uff1aNSNotification<\/li> \n  <li>\u76ee\u6807\u52a8\u4f5c\uff1aaddTarget:action:<\/li> \n <\/ul> \n <h3 id=\"1-\u4ee3\u7406\">1. \u4ee3\u7406<\/h3> \n <blockquote> \n  <p>\u4ee3\u7406\u65b9\u5f0f\u53ea\u80fd\u76d1\u542c\u8bbe\u7f6e\u4e86\u4ee3\u7406\u7684\u6587\u672c\u6846\u3002\u6ca1\u6709\u8bbe\u7f6e\u4ee3\u7406\u7684\u6587\u672c\u6846\u4e0d\u80fd\u8fdb\u884c\u76d1\u542c\u3002<\/p> \n <\/blockquote> \n <p>\u8bbe\u7f6e\u4ee3\u7406<\/p> \n <pre><code class=\"language-objectivec\">self.textField.delegate = self;\n<\/code><\/pre> \n <p>\u5b9e\u73b0\u534f\u8bae\u53ca\u534f\u8bae\u65b9\u6cd5 <code>&lt;UITextFieldDelegate&gt;<\/code><\/p> \n <pre><code class=\"language-objectivec\">@interface MyController:UIViewController &lt;UITextFieldDelegate&gt;\n\n@end\n\n\n@implementation  MyController\n\n\/\/\u662f\u5426\u53ef\u4ee5\u7f16\u8f91yes\u53ef\u4ee5 no\u4e0d\u53ef\u4ee5\n- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{\n    return YES;\n}\n\/\/\u5f00\u59cb\u7f16\u8f91\u7684\u65f6\u5019\u8c03\u7528\n- (void)textFieldDidBeginEditing:(UITextField *)textField{\n    NSLog(@&quot;\u5f00\u59cb\u7f16\u8f91&quot;);\n}\n \n\/\/\u662f\u5426\u5141\u8bb8\u7ed3\u675f\u7f16\u8f91\uff08\u5f53\u7528\u6237\u7ed3\u675f\u4e00\u4e2a\u6587\u672c\u6846\u7684\u65f6\u5019\uff0c\u9996\u5148\u4f1a\u8c03\u7528\u8fd9\u4e2a\uff09\n\/\/\u5982\u679c\u662fNO \u610f\u601d\u5c31\u662f\uff0c\u8fd9\u4e2a\u6587\u672c\u6846\u56de\u4e00\u76f4\u5904\u4e8e\u7f16\u8f91\u72b6\u6001\uff08\u4e5f\u53eb\u7b2c\u4e00\u54cd\u5e94\u8005\uff09\uff0c\u5c31\u7b97\u4f60\u518d\u70b9\u51fb\u5176\u4ed6\u6587\u672c\u6846\uff0c\u662f\u6ca1\u6709\u4efb\u4f55\u6548\u679c\u7684\n- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{\n    return YES;\n}\n\/\/\u7ed3\u675f\u7f16\u8f91\u7684\u65f6\u5019\u8c03\u7528\n- (void)textFieldDidEndEditing:(UITextField *)textField{\n    NSLog(@&quot;\u7ed3\u675f\u7f16\u8f91&quot;);\n}\n \n\/\/\u662f\u5426\u5141\u8bb8\u7528\u6237\u8f93\u5165\u6587\u4ef6\n\/\/\u7528\u6237\u6bcf\u6b21\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u7684\u65f6\u5019\u5c31\u4f1a\u8c03\u7528\u4e00\u6b21\u3002\u7136\u540e\u5224\u65ad\u662f\u5426\u663e\u793a\u5728\u6587\u672c\u6846\u91cc\n- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{\n   \/\/\u6253\u5370\n    NSString *text=[NSString stringWithFormat:@&quot;%@%@&quot;,textField.text,string];\n    NSLog(@&quot;------%@&quot;,text);\n    return YES;\n}\n\/\/\u662f\u5426\u5141\u8bb8\u6e05\u9664\u5f53\u524d\u6587\u672c\u6846\u4e2d\u6240\u8f93\u5165\u7684\u5185\u5bb9\n- (BOOL)textFieldShouldClear:(UITextField *)textField{\n    return YES;\n}\n@end\n\n<\/code><\/pre> \n <h3 id=\"2-\u901a\u77e5\">2. \u901a\u77e5<\/h3> \n <blockquote> \n  <p>\u53ef\u4ee5\u76d1\u542c\u6240\u6709\u6587\u672c\u6846\u7684\u5185\u5bb9\u53d8\u5316<\/p> \n <\/blockquote> \n <p>\u6dfb\u52a0\u901a\u77e5\u76d1\u542c <code>UITextFieldTextDidChangeNotification<\/code><\/p> \n <pre><code class=\"language-objectivec\">[NSNotificationCenter defaultCenter] addObserver:self \n\t\t\t\t\t\t\t\t\t\tselector:@selector(textChange:) \n\t\t\t\t\t\t\t\t\t\t\tname:UITextFieldTextDidChangeNotification object:nil];\n \n-(void)textChange: (NSNotification *)notif {\n    NSLog(@\u201c-----Change-----&quot;);\n}\n<\/code><\/pre> \n <p>\u4f7f\u7528\u5b8c\u6210\u540e\uff0c\u4e00\u5b9a\u8981\u9500\u6bc1<\/p> \n <pre><code class=\"language-objectivec\">\/\/\u5f53\u524d\u5bf9\u50cf\u8981\u9500\u6bc1\u7684\u65f6\u5019\uff0c\u521b\u5efa\u7684\u901a\u77e5\u8981\u8fdb\u884c\u79fb\u9664\uff1a\uff08\u5426\u5219\u53ef\u80fd\u62a5\u9519\uff0c\u574f\u5185\u5b58\u8bbf\u95ee\uff09\n-(void)dealloc{\n    [[NSNotificationCenter defaultCenter] removeObserver:self];\n}\n<\/code><\/pre> \n <h3 id=\"3-\u76ee\u6807\u52a8\u4f5c\u4e8b\u4ef6\">3. \u76ee\u6807\u52a8\u4f5c\u4e8b\u4ef6<\/h3> \n <blockquote> \n  <p>\u591a\u4e2a\u63a7\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u540c\u4e00\u4e2a\u6d88\u606f\u5904\u7406\u3002\u4e5f\u53ef\u4ee5\u662f\u591a\u4e2a\u4e0d\u540c\u7684\u6d88\u606f\u5904\u7406\u3002<\/p> \n <\/blockquote> \n <p>\u6dfb\u52a0\u76ee\u6807\u52a8\u4f5c events: <code>UIControlEventEditingChanged<\/code><\/p> \n <pre><code class=\"language-objectivec\">[self.textField1 addTarget:self action:@selector(textChange:) forControlEvents:UIControlEventEditingChanged];\n[self.textField2 addTarget:self action:@selector(textChange:) forControlEvents:UIControlEventEditingChanged];\n<\/code><\/pre> \n <p>\u5185\u5bb9\u6539\u53d8\u65f6\u89e6\u53d1<\/p> \n <pre><code class=\"language-objectivec\">\/\/\u6211\u628a2\u4e2a\u6587\u672c\u6846\u7684\u76d1\u542c\u89e6\u53d1\u65b9\u6cd5\u90fd\u8bbe\u7f6e\u4e3atextChange: \u76ee\u7684\u662f\u5224\u65ad\u767b\u5f55\u6309\u94ae\u662f\u5426\u53ef\u4ee5\u70b9\u51fb\n-(void)textChange:(UITextField *)tf {\n    if(tf == self.textField1){\n        NSLog(@&quot;\u7b2c\u4e00\u4e2a\u6587\u672c\u63a7\u4ef6\u7684\u5185\u5bb9\u53d1\u751f\u53d8\u5316&quot;);\n    }else if (tf == self.textField2){\n        NSLog(@&quot;\u7b2c\u4e8c\u4e2a\u6587\u672c\u63a7\u4ef6\u7684\u5185\u5bb9\u53d1\u751f\u53d8\u5316&quot;);\n    }\n}\n<\/code><\/pre> \n <h2 id=\"\u4e8c\u76d1\u542cuitextview\u6587\u672c\u5185\u5bb9\u9ad8\u5ea6\u53d8\u5316\">\u4e8c\u3001\u76d1\u542cUITextView\u6587\u672c\u5185\u5bb9\u9ad8\u5ea6\u53d8\u5316<\/h2> \n <p><strong>\u9047\u5230\u7684\u9700\u6c42\u6216\u95ee\u9898\uff1a<\/strong><br \/> \u505a\u804a\u5929\u952e\u76d8\u65f6\uff0c\u5728\u6587\u5b57\u5f55\u5165\u533a\u57df\uff0c\u5982\u679c\u7528\u5355\u884c\u6587\u672c\u5c55\u793a\uff0c\u5219\u4f1a\u51fa\u73b0\u5f53\u6587\u672c\u5185\u5bb9\u8fc7\u591a\u65f6\u5185\u5bb9\u5c55\u793a\u4e0d\u5168\u7684\u60c5\u51b5\uff0c\u540c\u65f6\u4fee\u6539\u4e0e\u9884\u89c8\u6587\u672c\u4e5f\u6bd4\u8f83\u8d39\u52b2\u3002 \u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5 \u50cf\u5fae\u4fe1\u3001QQ\u7b49\u7684\u505a\u6cd5\u662f \uff1a \u6839\u636e\u6587\u672c\u5185\u5bb9\u52a8\u6001\u8c03\u6574\u6587\u672c\u6846\u63a7\u4ef6\u7684\u9ad8\u5ea6\uff0c \u5e76\u8bbe\u7f6e\u4e00\u4e2a\u6700\u5927\u53ef\u663e\u793a\u7684\u9ad8\u5ea6\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u9ad8\u5ea6\u4e0d\u518d\u8c03\u6574\u3002<\/p> \n <p>\u6709\u4e86\u601d\u8def\uff0c\u90a3\u4e48\u63a5\u4e0b\u6765\u8981\u89e3\u51b3\u7684\u5c31\u662f\u5982\u4f55\u77e5\u9053\u6587\u672c\u9ad8\u5ea6\u53d1\u751f\u4e86\u53d8\u5316\uff1f \u60a8\u53ef\u80fd\u60f3\u5230\u7684\u662f \uff1a\u5982\u679c\u5f53\u6587\u672c\u6539\u53d8\u65f6\uff0c\u5b9e\u65f6\u8ba1\u7b97\u5f55\u5165\u6587\u672c\u7684\u9ad8\u5ea6\u4e0e\u539f\u6709\u9ad8\u5ea6\u8fdb\u884c\u6bd4\u8f83\uff0c \u5982\u679c\u4e0e\u539f\u9ad8\u5ea6\u4e0d\u540c\uff0c\u5219\u89e6\u53d1\u3002\u8fd9\u6837\u505a\u7684\u8bdd\uff0c\u53ea\u8981\u6709\u5b57\u7b26\u53d8\u5316\u5c31\u4f1a\u8c03\u7528\u4e00\u6b21\u8ba1\u7b97\uff0c\u6548\u7387\u4e0d\u53ef\u80fd\u4f1a\u9ad8\uff0c\u6240\u4ee5\uff0c\u8fd9\u79cd\u65b9\u5f0f\u663e\u7136\u4e0d\u662f\u6700\u4f18\u89e3\u3002<\/p> \n <p><strong>\u89e3\u51b3\u65b9\u6cd5\uff1a<\/strong><\/p> \n <p>\u5176\u5b9e\uff0c<code>UITextView<\/code>\u63a7\u4ef6\u662f\u7ee7\u627f\u81ea<code>UIScrollView<\/code>\u7684\u3002 \u5f53\u6211\u4eec\u9700\u8981\u77e5\u9053UIScrollView\u5185\u5bb9\u662f\u5426\u53d8\u5316\u65f6\uff0c\u76d1\u542c\u7684\u662f\u5b83\u7684<code>contentSize<\/code>\u5c5e\u6027\u3002 \u90a3\u4e48\u5bf9\u4e8e<code>UITextView<\/code>\u63a7\u4ef6\u540c\u6837\u9002\u7528\u3002\u6240\u4ee5\u5982\u679c\u60f3\u8981\u77e5\u9053UITextView\u5185\u5bb9\u7684\u9ad8\u5ea6\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7<code>contentSize<\/code>\u6765\u62ff\u5230\u3002<\/p> \n <pre><code class=\"language-objectivec\">CGFloat height = self.textView.contentSize.height;\n<\/code><\/pre> \n <h2 id=\"\u4e09cell\u4e2d\u7684\u6587\u672c\u6846\u5728reloaddata-or-reloadrow\u540e\u5931\u53bb\u7126\u70b9\">\u4e09\u3001cell\u4e2d\u7684\u6587\u672c\u6846\uff0c\u5728reloadData or reloadRow\u540e\u5931\u53bb\u7126\u70b9<\/h2> \n <p><strong>\u9047\u5230\u7684\u9700\u6c42\u6216\u95ee\u9898\uff1a<\/strong><\/p> \n <p>\u63a5\u4e0a\u9762\u7684\u573a\u666f\u3002 \u5f53\u6587\u672c\u6846\u5904\u4e8eUITableViewCell or UICollectionViewCell\u4e2d\u65f6\uff0c\u4f1a\u78b0\u5230\u5982\u4e0b\u60c5\u51b5\uff1a \u6587\u672c\u6846\u5904\u4e8e\u83b7\u53d6\u7126\u70b9\u72b6\u6001\uff0c \u76d1\u542c\u6587\u672c\u5185\u5bb9\u9ad8\u5ea6\u7684\u53d8\u5316\u540c\u6b65\u66f4\u6539Cell\u7684\u9ad8\u5ea6\u3002 \u901a\u5e38\u5728\u83b7\u53d6\u5230\u65b0\u7684\u9ad8\u5ea6\u540e\uff0c\u6211\u4eec\u4f1a\u4f7f\u7528<code>reloadRow<\/code> or <code>reloadData<\/code> \u6765\u91cd\u65b0\u5e03\u5c40\u4e0e\u52a0\u8f7d\u6570","orderid":"0","title":"UITextField & UITextView \u4f7f\u7528\u5c0f\u6280\u5de7(\u4e00)","smalltitle":"","mid":"0","fname":"iOS","special_id":"0","bak_id":"0","info":"0","hits":"276","pages":"2","comments":"0","posttime":"2023-09-23 15:43:33","list":"1695455013","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"<A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=UITextField' target=_blank>UITextField<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=UITextView' target=_blank>UITextView<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"112.94.1.100","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"UITextField & UITextView \u4f7f\u7528\u5c0f\u6280\u5de7","lastview":"1714930256","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}