IOS程序开发之禁止输入表情符号实例代码

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-\u007E\u00A0-\u00BE\u2E80-\uA4CF\uF900-\uFAFF\uFE30-\uFE4F\uFF00-\uFFEF\u0080-\u009F\u2000-\u201f
]" options:NSRegularExpressionCaseInsensitive error:nil];NSString *modifiedString = [regex stringByReplacingMatchesInString:textoptions:0range:NSMakeRange（0, [text length]）withTemplate:@""];return modifiedString;}