过滤表情

最新推荐文章于 2024-02-28 20:51:32 发布

转载最新推荐文章于 2024-02-28 20:51:32 发布 · 517 阅读

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- (void)textDidChange:(NSNotification *)note{
	
	ComponentAttrTableViewCell *cell = (ComponentAttrTableViewCell*)[self.compAttrTableView cellForRowAtIndexPath:editIndexPath];
	//禁止输入表情
	EditTextField *textField = cell.attrValueTextField;
	if([self isContainsEmoji:[textField text]]){
		[textField setText:[self disable_emoji:[textField text]]];
		
	}
}
/* 过滤表情 */
- (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;
}
/* 判断是否含有表情 */
- (BOOL)isContainsEmoji:(NSString *)string {
	__block BOOL isEomji = NO;
	[string enumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:
	 ^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
		 const unichar hs = [substring characterAtIndex:0];
		 if (0xd800 <= hs && hs <= 0xdbff) {
			 if (substring.length > 1) {
				 const unichar ls = [substring characterAtIndex:1];
				 const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;
				 if (0x1d000 <= uc && uc <= 0x1f77f) {
					 isEomji = YES;
				 }
			 }
		 } else if (substring.length > 1) {
			 const unichar ls = [substring characterAtIndex:1];
			 if (ls == 0x20e3) {
				 isEomji = YES;
			 }
		 } else {
			 if (0x2100 <= hs && hs <= 0x27ff && hs != 0x263b) {
				 isEomji = YES;
			 } else if (0x2B05 <= hs && hs <= 0x2b07) {
				 isEomji = YES;
			 } else if (0x2934 <= hs && hs <= 0x2935) {
				 isEomji = YES;
			 } else if (0x3297 <= hs && hs <= 0x3299) {
				 isEomji = YES;
			 } else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50|| hs == 0x231a ) {
				 isEomji = YES;
			 }
		 }
	 }];
	return isEomji;
}