判断是否是汉字
- (BOOL)isChinese
{
NSString *match = @"(^[\u4e00-\u9fa5]+$)";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF matches %@", match];
return [predicate evaluateWithObject:self];
}
获取字符串中的所有URL
- (NSArray*)getURLs {
NSError *error;
//可以识别url的正则表达式
NSString *regulaStr = @"((http[s]{0,1}|ftp)://[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\-~!@#$%^&*+?:_/=<>]*)?)|(www.[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\-~!@#$%^&*+?:_/=<>]*)?)";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regulaStr
options:NSRegularExpressionCaseInsensitive
error:&error];
NSArray *arrayOfAllMatches = [regex matchesInString:self
options:0
range:NSMakeRange(0, [self length])];
//NSString *subStr;
NSMutableArray *arr = [[NSMutableArray alloc] init];
for (NSTextCheckingResult *match in arrayOfAllMatches){
NSString* substringForMatch;
substringForMatch = [self substringWithRange:match.range];
[arr addObject:substringForMatch];
}
return arr;
}
/**
* 返回字符串所占用的尺寸
*
* @param font 字体
* @param maxSize 最大尺寸
*/
- (CGRect)sizeWithFont:(UIFont *)font maxSize:(CGSize)maxSize{
NSDictionary *attrs = @{NSFontAttributeName : font};
return [self boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil];
}
- (CGRect)sizeWithFont:(UIFont *)font maxasddSize:(CGSize)maxSize paragraphStyle:(NSParagraphStyle *) paragraphStyle
{
NSDictionary *attrs = @{NSFontAttributeName : font,
NSParagraphStyleAttributeName:paragraphStyle
};
return [self boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil];
}
/*
*利用Emoji表情最终会被编码成Unicode，因此，
*只要知道Emoji表情的Unicode编码的范围，
*就可以判断用户是否输入了Emoji表情。
*/
+ (BOOL)stringContainsEmoji:(NSString *)string{
// 过滤所有表情。returnValue为NO表示不含有表情，YES表示含有表情
__block BOOL returnValue = NO;
[string enumerateSubstringsInRange:NSMakeRange(0, [string length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
const unichar hs = [substring characterAtIndex:0];
// surrogate pair
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) {
returnValue = YES;
}
}
} else if (substring.length > 1) {
const unichar ls = [substring characterAtIndex:1];
if (ls == 0x20e3) {
returnValue = YES;
}
} else {
// non surrogate
if (0x2100 <= hs && hs <= 0x27ff) {
returnValue = YES;
} else if (0x2B05 <= hs && hs <= 0x2b07) {
returnValue = YES;
} else if (0x2934 <= hs && hs <= 0x2935) {
returnValue = YES;
} else if (0x3297 <= hs && hs <= 0x3299) {
returnValue = YES;
} else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50) {
returnValue = YES;
}
}
}];
return returnValue;
}
//过滤 空格、换行符、制表符
- (NSString *)stringFilterSpaceAndOther{
NSString *strUrl = [self stringByReplacingOccurrencesOfString:@"\n" withString:@""];
strUrl = [strUrl stringByReplacingOccurrencesOfString:@"\t" withString:@""];
strUrl = [strUrl stringByReplacingOccurrencesOfString:@" " withString:@""];
return strUrl;
}
// Json字符串转字典
- (NSDictionary *)stringWithJSONObject
{
NSData *jsonData = [self dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableContainers
error:&err];
if(err) {
NSLog(@"json解析失败：%@",err);
return nil;
}
return dic;
}
//去除小数点后面多余的0
+ (NSString *)removeFloatAllZero:(NSString *)string{
NSString * testNumber = string;
NSString * outNumber = [NSString stringWithFormat:@"%@",@(testNumber.floatValue)];
//价格格式化显示
NSNumberFormatter * formatter = [[NSNumberFormatter alloc]init];
formatter.numberStyle = kCFNumberFormatterDecimalStyle;
NSString * formatterString = [formatter stringFromNumber:[NSNumber numberWithFloat:[outNumber doubleValue]]];
//获取要截取的字符串位置
NSRange range = [formatterString rangeOfString:@"."];
if (range.length >0 ) {
NSString * result = [formatterString substringFromIndex:range.location];
if (result.length >= 4) {
formatterString = [formatterString substringToIndex:formatterString.length - 1];
}
}
return formatterString;
}
//文件大小转换 b->
- (NSString *)convertFileSize{
double convertedValue = [self doubleValue];
int multiplyFactor = 0;
NSArray *tokens = [NSArray arrayWithObjects:@"B",@"KB",@"MB",@"GB",@"TB",nil];
while (convertedValue > 100) {
convertedValue /= 1024;
multiplyFactor++;
}
return [NSString stringWithFormat:@"%.2f %@",convertedValue, [tokens objectAtIndex:multiplyFactor]];
}
获取app名称、app版本号、app的build号
+ (NSString *)getProjectName{
NSDictionary *infoDict= [[NSBundle mainBundle] infoDictionary];
// app名称
NSString *appName = [infoDict valueForKey:@"CFBundleDisplayName"];
if (!appName) appName = [infoDict valueForKey:@"CFBundleName"];
if (!appName) appName = [infoDict valueForKey:@"CFBundleExecutable"];
return appName;
}
+ (NSString*)getProjectVersion{
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
// app版本 NSString *app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
return app_Version;
}
+ (NSString *)getProjectBuild{
NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
// app build版本
NSString *app_build = [infoDictionary objectForKey:@"CFBundleVersion"];
return app_build;
}
//转时间，XX:xx:xx,24小时内，常用于24小时的倒计时
+ (NSString *)JJTimeTransformFrom:(int)count{
NSString *tempStr = nil;
if (count >= 60) {
int h = count / 3600;
int d = count % 3600;
int a = d / 60;
int b = d % 60;
tempStr = [NSString stringWithFormat:@"%02d:%02d:%02d",h,a,b];
} else {
tempStr = [NSString stringWithFormat:@"00:00:%02d",count];
}
return tempStr;
}
//获取汉字的拼音
- (NSString *)pinyin{
NSMutableString *str = [self mutableCopy];
CFStringTransform(( CFMutableStringRef)str, NULL, kCFStringTransformMandarinLatin, NO);
CFStringTransform((CFMutableStringRef)str, NULL, kCFStringTransformStripDiacritics, NO);
return [[str stringByReplacingOccurrencesOfString:@" " withString:@""] lowercaseString];
}
- (NSString *)transformToPinyin
{
//转成了可变字符串
NSMutableString *str = [NSMutableString stringWithString:self];
CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);
//再转换为不带声调的拼音
CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);
NSArray *pinyinArray = [str componentsSeparatedByString:@" "];
NSMutableString *allString = [NSMutableString new];
int count = 0;
for (int i = 0; i < pinyinArray.count; i++)
{
for(int i = 0; i < pinyinArray.count;i++)
{
if (i == count) {
[allString appendString:@"#"];
//区分第几个字母
}
[allString appendFormat:@"%@",pinyinArray[i]];
}
[allString appendString:@","];
count ++;
}
NSMutableString *initialStr = [NSMutableString new];
//拼音首字母
for (NSString *s in pinyinArray)
{
if (s.length > 0)
{
[initialStr appendString: [s substringToIndex:1]];
}
}
[allString appendFormat:@"#%@",initialStr];
[allString appendFormat:@",#%@",self];
return allString;
}