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IOS常用宏定义&工具方法

Posted on Edited on

总结一些工作中常用的宏定义和工具方法

  1. 宏定义
  2. 工具方法

宏定义

  • NSLog宏定义
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#ifdef NEED_DEBUG

#define NSLog(format, ...) \
do { \
NSLog(@"<%@ : %d : %s>-%@", \
[[NSString stringWithUTF8String:__FILE__] lastPathComponent], \
__LINE__, \
__FUNCTION__, \
[NSString stringWithFormat:format, ##__VA_ARGS__]); \
} while(0)
#else
#define NSLog(format, ...) do{ } while(0)
#endif
  • 纪录程序执行时间宏定义
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#define TICK   NSDate *startTime = [NSDate date]
#define TOCK   NSLog(@"Time: %f", -[startTime timeIntervalSinceNow])
  • 字符串相关判断
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//判断字符串是否为空或者为空字符串
#define StringIsNullOrEmpty(str) (str==nil||[str isEqualToString:@""])
//判断字符串不为空并且不为空字符串
#define StringNotNullAndEmpty(str) (str!=nil && ![str isEqualToString:@""] && ![str isEqualToString:@"null"])
//对象转字符串
#define StringFromObject(object) [NSString stringWithFormat:@"%@",object]
  • 程序主代理
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/// 程序主代理
#define IMAPP_DELEGATE	((AppDelegate *)[UIApplication sharedApplication].delegate)
  • 获取图片
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/// 取图片
#define GET_IMAGE(imageName)	[UIImage imageNamed:(imageName)]
  • RGB颜色
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#define ColoreWithRGB(r,g,b)        [UIColor colorWithRed:(CGFloat)r/255 green:(CGFloat)g/255 blue:(CGFloat)b/255 alpha:1]
  • 屏幕宽高
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#define SCREEN_HEIGHT	([UIScreen mainScreen].bounds.size.height)
#define SCREEN_WIDTH	([UIScreen mainScreen].bounds.size.width)
  • 单例宏定义
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//* 单例interface
#define CLASS_SINGLETON_INTERFACE(classname)   \
                                               \
+ (classname *)share##classname;

//* 单例implementation
#define CLASS_SINGLETON_IMPLEMENTATION(classname)                       \
static classname* shared##classname = nil;     \
                                               \
+ (classname *)share##classname                \
{                                              \
@synchronized(self)                            \
{                                              \
if (shared##classname == nil)                  \
{                                              \
shared##classname = [[self alloc] init];       \
}                                              \
}                                              \
return shared##classname;                      \
}                                              \

工具方法

  • Alert
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CG_INLINE void AlertlogError (NSString* message)
{
    static UIAlertView *alertView = nil;
    if (!alertView)
    {
        alertView = [[UIAlertView alloc] initWithTitle:  @""
                                                              message: message
                                                             delegate: nil
                                                    cancelButtonTitle: @"OK"
                                                    otherButtonTitles: nil,
                                    nil];
        [alertView show];
    }
    else if ([alertView isVisible])
    {
        
        [alertView dismissWithClickedButtonIndex:0 animated:NO];
#if !__has_feature(objc_arc)
        [alertView release];
#else
#endif
        
        alertView = nil;
        alertView = [[UIAlertView alloc] initWithTitle:  @""
                                                message: message
                                               delegate: nil
                                      cancelButtonTitle: @"OK"
                                      otherButtonTitles: nil,
                      nil];
        [alertView show];
    }
    else
    {
        [alertView dismissWithClickedButtonIndex:0 animated:NO];
#if !__has_feature(objc_arc)
        [alertView release];
#else
#endif
        alertView = nil;
        alertView = [[UIAlertView alloc] initWithTitle:  @""
                                                message: message
                                               delegate: nil
                                      cancelButtonTitle: @"OK"
                                      otherButtonTitles: nil,
                      nil];
        [alertView show];
    }
}
  • URL编码 
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CG_INLINE NSString* URLEncode(NSString *string)
{
    #if !__has_feature(objc_arc)
    NSString *newString = NSMakeCollectable([(NSString *)CFURLCreateStringByAddingPercentEscapes(
                                                                                                 kCFAllocatorDefault,
                                                                                                 (CFStringRef)string, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"),
                                                                                                 CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding)) autorelease]);
#else
    NSString *newString = (__bridge_transfer NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,( __bridge CFStringRef)string, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"),CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));
#endif
    if (newString) {
        return newString;
    }
    return string;
}

CG_INLINE NSString* URLDecode(NSString *string)
{
#if !__has_feature(objc_arc)
    
    NSString *newString = NSMakeCollectable([(NSString *)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault,(__bridge CFStringRef) string,CFSTR(""),CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding)) autorelease]);
#else
    NSString *newString = (__bridge NSString *) CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault,(__bridge CFStringRef) string,CFSTR(""),CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));;
#endif
    if (newString) {
        return newString;
    }
    return string;
}
  • MD5
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CG_INLINE NSString* MD5FromString(NSString *sourceString)
{
    const char *original_str = [sourceString UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5(original_str, strlen(original_str), result);
    NSMutableString *hash = [NSMutableString string];
    for (int i = 0; i < 16; i++)
        [hash appendFormat:@"%02X", result[i]];
    return [hash lowercaseString];
}

CG_INLINE NSString *MD5ForFile(NSString *path)
{
    NSFileHandle *handle = [NSFileHandle fileHandleForReadingAtPath:path];
    if( handle== nil )
    {
        return nil;
    }
    CC_MD5_CTX md5;
    CC_MD5_Init(&md5);
    BOOL done = NO;
    while(!done)
    {
        @autoreleasepool
        {
            NSData* fileData = [handle readDataOfLength:256];
            CC_MD5_Update(&md5, [fileData bytes], [fileData length]);
            if( [fileData length] == 0 ) done = YES;
            fileData = nil;
        }
    }
    unsigned char digest[CC_MD5_DIGEST_LENGTH];
    CC_MD5_Final(digest, &md5);
    NSString* s = [NSString stringWithFormat: @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
                   digest[0], digest[1],
                   digest[2], digest[3],
                   digest[4], digest[5],
                   digest[6], digest[7],
                   digest[8], digest[9],
                   digest[10], digest[11],
                   digest[12], digest[13],
                   digest[14], digest[15]];
    return s;
}