项目中实用的一些方法，有需要的进来看看

这篇博客汇总了iOS开发中的一些实用方法，包括正则表达式验证密码、手机号、身份证，数组转json字符串，计算文字frame，设置视图边框，获取时间戳，appstore版本检查，MD5加密以及DES加密等常用操作。

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#pragma mark -------- 正则匹配用户密码6-18位数字和字母组合

+ (BOOL)checkPassword:(NSString *) password

{

NSString *pattern =@"^(?![0-9]+$)(?![a-zA-Z]+$)[a-zA-Z0-9]{6,18}";

NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", pattern];

BOOL isMatch = [predevaluateWithObject:password];

return isMatch;

}

#pragma mark -------- 正则匹配手机号

+ (BOOL)checkTelNumber:(NSString *) telNumber

{

NSString *pattern =@"^1+[34578]+\\d{9}";

NSPredicate *pred = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", pattern];

BOOL isMatch = [predevaluateWithObject:telNumber];

return isMatch;

}

#pragma mark ----- 验证身份证号

+ (BOOL) validateIdentityCard: (NSString *)identityCard

{

BOOL flag;

if (identityCard.length <=0) {

flag = NO;

return flag;

}

NSString *regex2 =@"^(\\d{14}|\\d{17})(\\d|[xX])$";

NSPredicate *identityCardPredicate = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",regex2];

return [identityCardPredicateevaluateWithObject:identityCard];

}

#pragma mark -------- 数组转json字符串

+ (NSMutableString*)StringToJson:(NSArray *)array

{

NSError *parseError =nil;

NSData *jsonData = [NSJSONSerializationdataWithJSONObject:arrayoptions:NSJSONWritingPrettyPrintederror:&parseError];

return [[NSMutableStringalloc] initWithData:jsonDataencoding:NSUTF8StringEncoding];

}

#pragma mark -------- 根据文字，字体宽度得出frame

+(CGRect)getWidthString:(NSString *)string font:(int )font width:(int )width{

NSDictionary *dic =@{NSFontAttributeName : [UIFontsystemFontOfSize:font]};

CGRect rect = [stringboundingRectWithSize:CGSizeMake(MAIN_SCREEN_WIDTH-width,10000) options:NSStringDrawingUsesLineFragmentOriginattributes:dic context:nil];

return rect;

}

#pragma mark -------- 根据需求调节视图边框弧度，宽度，颜色

+ (void)viewRadiusAll:(UIView *)view Radius:(int )Radius borderWidth:(int )borderWidth color:(UIColor *)color{

view.userInteractionEnabled=YES;

view.layer.cornerRadius=Radius;

view.layer.borderColor = color.CGColor;

view.layer.borderWidth = borderWidth;

view.layer.masksToBounds=YES;

}

#pragma mark -------- 获取当前时间戳

+ (NSString *)getTimeStamp{

NSTimeInterval time = [[NSDatedate] timeIntervalSince1970]*1000;

long long timestamplong = [[NSNumbernumberWithDouble:time] longLongValue];

NSString *timestamp = [NSStringstringWithFormat:@"%lld",timestamplong];

return timestamp;

}

#pragma mark -------- 获取当前年月日时分秒

+ (NSString *)getTimeStampDate{

NSTimeInterval time = [[NSDatedate] timeIntervalSince1970]*1000;

long long timestamplong = [[NSNumbernumberWithDouble:time] longLongValue];

NSString *timestamp = [NSStringstringWithFormat:@"%lld",timestamplong];

NSDate *date = [NSDatedateWithTimeIntervalSince1970:[timestampdoubleValue]/1000];

NSDateFormatter *dateFormat=[[NSDateFormatteralloc]init];

[dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];//HH:mm:ss

NSString* string=[dateFormatstringFromDate:date];

return string;

}

#pragma mark -------- 获取appstore版本号

+(void)getVersion:(AppVersionBlock)block{

NSString *path = [[NSStringalloc] initWithFormat:@"http://itunes.apple.com/lookup?id=%@",APP_ID];

NSURL *url = [NSURLURLWithString:path];

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:url

cachePolicy:NSURLRequestReloadIgnoringCacheData

timeoutInterval:10];

[request setHTTPMethod:@"POST"];

NSOperationQueue *queue = [NSOperationQueuenew];

[NSURLConnectionsendAsynchronousRequest:requestqueue:queue completionHandler:^(NSURLResponse *response,NSData *data,NSError *error){

NSMutableDictionary *receiveStatusDic=[[NSMutableDictionaryalloc]init];

if (data) {

NSDictionary *receiveDic = [NSJSONSerializationJSONObjectWithData:data options:NSJSONReadingMutableLeaveserror:nil];

if ([[receiveDicvalueForKey:@"resultCount"]intValue]>0) {

[receiveStatusDic setValue:@"1"forKey:@"status"];

[receiveStatusDic setValue:[[[receiveDicvalueForKey:@"results"]objectAtIndex:0]valueForKey:@"version"] forKey:@"version"];

}else{

[receiveStatusDic setValue:@"-1"forKey:@"status"];

}

}else{

[receiveStatusDic setValue:@"-1"forKey:@"status"];

}

block(receiveStatusDic[@"version"]);

}];

}

#pragma mark -------- MD5 16位加密

+ (NSString *)md5_16:(NSString *)str

{

constchar *cStr = [str UTF8String];

unsignedchar result[16];

CC_MD5( cStr, (unsignedint)strlen(cStr), result );

return [NSStringstringWithFormat:

@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",

result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7],

result[8], result[9], result[10], result[11], result[12], result[13], result[14], result[15]

];

}

#pragma -------- MD5 32位加密

+(NSString *)md5_32:(NSString *)str {

if (str ==nil) {

returnnil;

}

constchar *cStr = [str UTF8String];

unsignedchar result[32];

CC_MD5( cStr, (unsigned)strlen(cStr), result );

return [NSStringstringWithFormat:

@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",

result[0], result[1], result[2], result[3],

result[4], result[5], result[6], result[7],

result[8], result[9], result[10], result[11],

result[12], result[13], result[14], result[15]

];

}

//DES加密

+(NSString *)DESPassword:(NSString *)pw WithKey:(NSString *)key_des{

char buffer [1024] ;

memset(buffer,0, sizeof(buffer));

size_t numBytesEncrypted ;

unsignedint len_pw = (int)[pwlength];

char plaintext[len_pw +1];

strcpy(plaintext, [pwUTF8String]);

unsignedint len_key = (int)[key_deslength];

char key[len_key +1];

strcpy(key, [key_desUTF8String]);

CCCryptorStatus cryptStatus =CCCrypt(kCCEncrypt,

kCCAlgorithmDES,

kCCOptionPKCS7Padding |kCCOptionECBMode,

key,

kCCKeySizeDES,

NULL,

plaintext,

strlen(plaintext),

buffer,

1024,

&numBytesEncrypted);

// 这里少了对返回值的判断：cryptStatus=kCCSuccess

if (cryptStatus ==kCCParamError) return@"PARAM ERROR";

else if (cryptStatus == kCCBufferTooSmall)return @"BUFFER TOO SMALL";

else if (cryptStatus == kCCMemoryFailure)return @"MEMORY FAILURE";

else if (cryptStatus == kCCAlignmentError)return @"ALIGNMENT";

else if (cryptStatus == kCCDecodeError)return @"DECODE ERROR";

else if (cryptStatus == kCCUnimplemented)return @"UNIMPLEMENTED";

NSData *data = [NSDatadataWithBytes:buffer length:numBytesEncrypted];

NSString *str1 = [datadescription];

str1 = [str1 substringWithRange:NSMakeRange(1, [str1 length]-2)];

str1=[[str1 stringByReplacingOccurrencesOfString:@" "withString:@""]uppercaseString];

return str1;

}

#pragma mark---- 从url中获取视频文件名称

+(NSString *)getfileNameFromNsurl:(NSURL *)url

{

NSString *parameterString = [urlquery];

NSArray *parameters = [parameterStringcomponentsSeparatedByString:@"&"];

NSString *fileName =nil;

for (NSString *prin parameters) {

if ([prhasPrefix:@"vid="]) {

fileName = [pr substringWithRange:NSMakeRange(4, pr.length - 4)];

break;

}

return fileName;

}

#pragma mark---- 判断数据是否为空

+(BOOL)checkEmpty:(id)checkObj

{

if (nil == checkObj || [checkObjisKindOfClass:[NSNullclass]]) {

returnYES;

}

if ([checkObjisKindOfClass:[NSStringclass]]) {

NSString *str = (NSString *)checkObj;

NSString *strWithoutWhitespace = [strtrim];

if ([@"(null)"isEqualToString:str]){

returnYES;

}

if ([strWithoutWhitespacelength] == 0) {

returnYES;

}

if ([checkObjisKindOfClass:[NSArrayclass]]) {

NSArray *arr = (NSArray *)checkObj;

if (!([arrcount] > 0)) {

returnYES;

}

returnNO;

}

//获取当前屏幕显示的viewcontroller

- (UIViewController *)getCurrentVC

{

UIViewController *rootViewController = [UIApplication sharedApplication].keyWindow.rootViewController;

UIViewController *currentVC = [self getCurrentVCFrom:rootViewController];

return currentVC;

}

- (UIViewController *)getCurrentVCFrom:(UIViewController *)rootVC

{

UIViewController *currentVC;

if ([rootVC presentedViewController]) {

// 视图是被presented出来的

rootVC = [rootVC presentedViewController];

}

if ([rootVC isKindOfClass:[UITabBarController class]]) {

// 根视图为UITabBarController

currentVC = [self getCurrentVCFrom:[(UITabBarController *)rootVC selectedViewController]];

} else if ([rootVC isKindOfClass:[UINavigationController class]]){

// 根视图为UINavigationController

currentVC = [self getCurrentVCFrom:[(UINavigationController *)rootVC visibleViewController]];

} else {

// 根视图为非导航类

currentVC = rootVC;

}

return currentVC;

}

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