一,效果图。
images/loading.gif' data-original="http://images2015.cnblogs.com/blog/337518/201510/337518-20151019143247286-1633529862.jpg" width="218" height="400" />
二,工程图。
三,代码。
RootViewController.h
#import <UIKit/UIKit.h>@interface RootViewController : UIViewController<UITextViewDelegate>@end
RootViewController.m
- (void)viewDidLoad{ [super viewDidLoad]; // Do any additional setup after loading the view. //初始化背景 [self addView];}#pragma -mark -functions-(void)addView{ UITextView *textView=[[UITextView alloc]initWithFrame:CGRectMake(50, 100, 200, 50)]; textView.backgroundColor=[UIColor redColor]; textView.delegate=self; [self.view addSubview:textView];}#pragma -mark -UITextViewDelegate- (void)textViewDidChange:(UITextView *)textView{ NSRange textRange = [textView selectedRange]; [textView setText:[self disable_emoji:[textView text]]]; [textView setSelectedRange:textRange];}//禁止输入表情- (NSString *)disable_emoji:(NSString *)text{ NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"[^\\u0020-\\u007E\\u00A0-\\u00BE\\u2E80-\\uA4CF\\uF900-\\uFAFF\\uFE30-\\uFE4F\\uFF00-\\uFFEF\\u0080-\\u009F\\u2000-\\u201f\r\n]" options:NSRegularExpressionCaseInsensitive error:nil]; NSString *modifiedString = [regex stringByReplacingMatchesInString:text options:0 range:NSMakeRange(0, [text length]) withTemplate:@""]; return modifiedString;}
原标题:【代码笔记】禁止输入表情符号
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