废话不多说了，先给大家展示效果图。
一，效果图。
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-u007Eu00A0-u00BEu2E80-uA4CFuF900-uFAFFuFE30-uFE4FuFF00-uFFEFu0080-u009Fu2000-u201frn]" options:NSRegularExpressionCaseInsensitive error:nil]; NSString *modifiedString = [regex stringByReplacingMatchesInString:text options:0 range:NSMakeRange(0, [text length]) withTemplate:@""]; return modifiedString; }
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