/// 文本字号计算 指定单行字符串高度/// @param height 返回单行可显示的最大字号-(CGFloat)fontSizeFromHeight:(CGFloat)height{ CGFloat fontSize = 0; for (int i = 0; i < (int)height ; i++) { CGFloat h = [s...

NSString *str =@"Rem【ar【k";NSArray *array = [str componentsSeparatedByString:@"【"]; //字符串按照【分隔成数组NSLog(@"array=%@=",array); //结果是

// 通过创建一个NSString 的category类目实现最后输入的表情的过滤 输入框粘贴功能需要关闭也就是只能输入关闭输入框粘贴功能点击此链接+ (BOOL)isContainsTwoEmoji:(NSString *)string{ __blockBOOL isEomji =NO; [stringenumerateSubstringsInRange:NSMa...

[_number addTarget:self action:@selector(numberAgaintextFieldDidChange:) forControlEvents:UIControlEventEditingChanged];- (void)textViewDidChange:(UITextView *)textView { NSInteger number ...

// 字符串是否含有另一个字符串+ (BOOL)string:(NSString *)string subStr:(NSString *)subStr{ // NSLog(@"%@---比较---%@",string,subStr); if ([string rangeOfString:subStr].location != NSNotFound) { ...

/* 排揎算法 升序 降序 */- (NSMutableArray *)arrPaiXufrom:(NSMutableArray *)arr sheng:(BOOL)sheng{ for (int i = 0; i < arr.count; i++) { for (int j = i+1; j < arr.count; j++)...

NSString *newStr =@"sdfdfs15dfdfdf15fdfdow们啊as阿达阿达打啊"; NSString *temp =nil; for(int i =0; i < [newStr length]; i++) { temp = [newStr substringWithRange:NSMakeRange(i,1...

    NSMutableArray *array =@[@"111",@"4444",@"33333"].mutableCopy;        // 数组转字符串    NSString *str = [array componentsJoinedByString:@","];    NSLog(@"%@",str);        // 字符串转数组    NSArray * ar = [s...

// 找出连续的相同元素 并记录起始位置和长度-(NSMutableArray *)locationFromStr:(NSString *)str sameStr:(NSString *)sameStr{ NSMutableArray *arr = [NSMutableArray array]; NSString * temp =nil; NSInteger coun...

/** * emoji表情过滤 */+(NSString *)filterEmoji:(NSString *)string { NSUInteger len = [string lengthOfBytesUsingEncoding:NSUTF8StringEncoding]; const char *utf8 = [string UTF8String]; ...

NSString* str=nil; //1. 去掉首尾空格和换行符 str = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; //2. 去掉所有空格和换行符 str = [str stringByReplacingO...

_phoneNumber = [_phoneNumber stringByReplacingCharactersInRange:NSMakeRange(3, 5) withString:@"*****"];

NSString * thePath = @"106.73293,10.79871|106.73229,40.79841|"; NSArray *array = [thePath componentsSeparatedByString:@"|"];NSLog(@"%@",array);

NSString *str = @"dsdf456s56fs5f4dsf145ds456fds456fds45fds45fds5fs45fs5f45";NSString *first = [str substringToIndex:1];//字符串开始NSString *last = [str substringFromIndex:str.length-1];//字符串结尾NSLog...

/** * 网址正则验证 1或者2使用哪个都可以 * * @param string 要验证的字符串 * * @return 返回值类型为BOOL */- (BOOL)urlValidation:(NSString *)string { NSError *error; // 正则1 NSString *regulaStr =@"\\b...

//邮箱+ (BOOL) validateEmail:(NSString *)email{ NSString *emailRegex =@"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicatepredicateWithFormat:@"SELF ...

NSString *str = _textView.text; str = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; //去除掉首尾的空白字符和换行字符 str = [str stringByReplacingOccurrencesO...

- (BOOL)string:(NSString *)string subStr:(NSString *)subStr{    if ([string rangeOfString:subStr].location !=NSNotFound) {                //条件为真，表示字符串string包含一个自字符串subStr   

//nsdata转nsstring NSString * newStr = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding]; // / 替换— weakSelf.imageUrl = [newStr stringByReplacingO...