无标题文章

1.NSDateFomatter

@interface NSDateFormatter (MyCategory)  
  
+ (id)dateFormatter;  
+ (id)dateFormatterWithFormat:(NSString *)dateFormat;  
  
+ (id)defaultDateFormatter;  
  
@end 
@implementation NSDateFormatter (MyCategory)

+ (id)dateFormatter
{
    return [[self alloc] init];
}

+ (id)dateFormatterWithFormat:(NSString *)dateFormat
{
    NSDateFormatter *dateFormatter = [[self alloc] init];
    dateFormatter.dateFormat = dateFormat;
    return dateFormatter;
}

+ (id)defaultDateFormatter
{
    return [self dateFormatterWithFormat:@"yyyy-MM-dd HH:mm:ss"];
}

@end 

2.NSDate

@interface NSDate (MyCategory)  
  
- (NSString *)timeIntervalDescription;//距离当前的时间间隔  
- (NSString *)minuteDescription;//精确到分钟的日期  
- (NSString *)formattedDateDescription;//格式化日期  
  
@end  
@implementation NSDate (MyCategory)  

- (NSString *)timeIntervalDescription  
{      
    NSTimeInterval timeInterval = -[self timeIntervalSinceNow];  
    if (timeInterval < 60) {  
        return @"1分钟内";  
    } else if (timeInterval < 3600) {  
        return [NSString stringWithFormat:@"%.f分钟前", timeInterval / 60];  
    } else if (timeInterval < 86400) {  
        return [NSString stringWithFormat:@"%.f小时前", timeInterval / 3600];  
    } else if (timeInterval < 2592000) {//30天内  
        return [NSString stringWithFormat:@"%.f天前", timeInterval / 86400];  
    } else if (timeInterval < 31536000) {//30天至1年内  
        NSDateFormatter *dateFormatter = [NSDateFormatter dateFormatterWithFormat:@"M月d日"];  
        return [dateFormatter stringFromDate:self];  
    } else {  
        return [NSString stringWithFormat:@"%.f年前", timeInterval / 31536000];  
    }  
}  
  
  
- (NSString *)minuteDescription  
{  
    NSDateFormatter *dateFormatter = [NSDateFormatter dateFormatterWithFormat:@"yyyy-MM-dd"];  
      
    NSString *theDay = [dateFormatter stringFromDate:self];//日期的年月日  
    NSString *currentDay = [dateFormatter stringFromDate:[NSDate date]];//当前年月日  
    if ([theDay isEqualToString:currentDay]) {//当天  
        [dateFormatter setDateFormat:@"ah:mm"];  
        return [dateFormatter stringFromDate:self];  
    } else if ([[dateFormatter dateFromString:currentDay] timeIntervalSinceDate:[dateFormatter dateFromString:theDay]] == 86400) {//昨天  
        [dateFormatter setDateFormat:@"ah:mm"];  
        return [NSString stringWithFormat:@"昨天 %@", [dateFormatter stringFromDate:self]];  
    } else if ([[dateFormatter dateFromString:currentDay] timeIntervalSinceDate:[dateFormatter dateFromString:theDay]] < 886400 * 7) {//间隔一周内  
        [dateFormatter setDateFormat:@"EEEE ah:mm"];  
        return [dateFormatter stringFromDate:self];  
    } else {//以前  
        [dateFormatter setDateFormat:@"yyyy-MM-dd ah:mm"];  
        return [dateFormatter stringFromDate:self];  
    }  
}  
  
  
- (NSString *)formattedDateDescription  
{  
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];  
      
    [dateFormatter setDateFormat:@"yyyy-MM-dd"];  
    NSString *theDay = [dateFormatter stringFromDate:self];//日期的年月日  
    NSString *currentDay = [dateFormatter stringFromDate:[NSDate date]];//当前年月日  
      
    NSInteger timeInterval = -[self timeIntervalSinceNow];  
    if (timeInterval < 60) {  
        return @"1分钟内";  
    } else if (timeInterval < 3600) {//1小时内  
        return [NSString stringWithFormat:@"%d分钟前", timeInterval / 60];  
    } else if (timeInterval < 21600) {//6小时内  
        return [NSString stringWithFormat:@"%d小时前", timeInterval / 3600];  
    } else if ([theDay isEqualToString:currentDay]) {//当天  
        [dateFormatter setDateFormat:@"HH:mm"];  
        return [NSString stringWithFormat:@"今天 %@", [dateFormatter stringFromDate:self]];  
    } else if ([[dateFormatter dateFromString:currentDay] timeIntervalSinceDate:[dateFormatter dateFromString:theDay]] == 86400) {//昨天  
        [dateFormatter setDateFormat:@"HH:mm"];  
        return [NSString stringWithFormat:@"昨天 %@", [dateFormatter stringFromDate:self]];  
    } else {//以前  
        [dateFormatter setDateFormat:@"MM-dd HH:mm"];  
        return [dateFormatter stringFromDate:self];  
    }  
}  
  
@end  

3.UIColor

@interface UIColor (MyCategory)  
  
+ (UIColor *)colorWithHexRGB:(NSString *)hexRGBString;  
  
@end  

@implementation UIColor (MyCategory)  
  
/*由16进制字符串获取颜色*/  
+ (UIColor *)colorWithHexRGB:(NSString *)hexRGBString  
{  
      
    if ([hexRGBString hasPrefix:@"#"]) {  
          
        hexRGBString = [hexRGBString substringFromIndex:1];  
    }  
    unsigned int colorCode = 0;  
    unsigned char redByte, greenByte, blueByte;  
      
    if (hexRGBString) {  
        NSScanner *scanner = [NSScanner scannerWithString:hexRGBString];  
        [scanner scanHexInt:&colorCode];  
    }  
    redByte = (unsigned char) (colorCode >> 16);  
    greenByte = (unsigned char) (colorCode >> 8);  
    blueByte = (unsigned char) (colorCode); // masks off high bits  
      
    return [UIColor colorWithRed:(float)redByte/0xff green:(float)greenByte/0xff blue:(float)blueByte/0xff alpha:1.0];  
}  
@end  

4.UIImage

@interface UIImage (MyCategory)  
//图片拉伸、平铺接口   
- (UIImage *)resizableImageWithCompatibleCapInsets:(UIEdgeInsets)capInsets resizingMode:(UIImageResizingMode)resizingMode;  
//图片以ScaleToFit方式拉伸后的CGSize  
- (CGSize)sizeOfScaleToFit:(CGSize)scaledSize;  
  
//将图片转向调整为向上  
- (UIImage *)fixOrientation;  
  
//以ScaleToFit方式压缩图片  
- (UIImage *)compressedImageWithSize:(CGSize)compressedSize;  
  
@end  

@implementation UIImage (MyCategory)  
/*获取当前主题包的指定图片*/  
+ (UIImage *)themeImageNamed:(NSString *)name  
{  
    NSUInteger themeID = [[ViewManager defaultManager] themeID];  
    if (themeID == 0) {//默认主题  
        NSString *fileName = [NSString stringWithFormat:@"Lianxi.bundle/Images/%@", name];  
        return [self imageNamed:fileName];  
    } else {//下载主题  
        return nil;  
    }  
}  
  
/*图片拉伸、平铺接口,兼容iOS5+*/  
- (UIImage *)resizableImageWithCompatibleCapInsets:(UIEdgeInsets)capInsets resizingMode:(UIImageResizingMode)resizingMode  
{  
    CGFloat version = [[[UIDevice currentDevice] systemVersion] floatValue];  
    if (version >= 6.0) {  
        return [self resizableImageWithCapInsets:capInsets resizingMode:resizingMode];  
    } else if (version >= 5.0) {  
        if (resizingMode == UIImageResizingModeStretch) {  
            return [self stretchableImageWithLeftCapWidth:capInsets.left topCapHeight:capInsets.top];  
        } else {//UIImageResizingModeTile  
            return [self resizableImageWithCapInsets:capInsets];  
        }  
    } else {  
        return [self stretchableImageWithLeftCapWidth:capInsets.left topCapHeight:capInsets.top];  
    }  
}  
  
/*图片以ScaleToFit方式拉伸后的CGSize*/  
- (CGSize)sizeOfScaleToFit:(CGSize)scaledSize  
{  
    CGFloat scaleFactor = scaledSize.width / scaledSize.height;  
    CGFloat imageFactor = self.size.width / self.size.height;  
    if (scaleFactor <= imageFactor) {//图片横向填充  
        return CGSizeMake(scaledSize.width, scaledSize.width / imageFactor);  
    } else {//纵向填充  
        return CGSizeMake(scaledSize.height * imageFactor, scaledSize.height);  
    }  
}  
  
/*将图片转向调整为向上*/  
- (UIImage *)fixOrientation  
{  
    if (self.imageOrientation == UIImageOrientationUp) {  
        return self;  
    }  
      
    UIGraphicsBeginImageContextWithOptions(self.size, NO, self.scale);  
    [self drawInRect:CGRectMake(0.0, 0.0, self.size.width, self.size.height)];  
      
    UIImage *fixedImage = UIGraphicsGetImageFromCurrentImageContext();  
    UIGraphicsEndImageContext();  
      
    return fixedImage;  
      
}  
/*以ScaleToFit方式压缩图片*/  
- (UIImage *)compressedImageWithSize:(CGSize)compressedSize  
{  
    if (CGSizeEqualToSize(self.size, CGSizeZero) || (self.size.width <= compressedSize.width && self.size.height <= compressedSize.height)) {//不用压缩  
        return self;  
    }  
      
    CGSize scaledSize = [self sizeOfScaleToFit:compressedSize];  
      
    //压缩大小,调整转向  
    UIGraphicsBeginImageContext(scaledSize);  
    [self drawInRect:CGRectMake(0.0, 0.0, scaledSize.width, scaledSize.height)];  
    UIImage *compressedImage = UIGraphicsGetImageFromCurrentImageContext();  
    UIGraphicsEndImageContext();  
      
    return compressedImage;  
}  
  
@end  

5.UIView

@interface UIView (MyCategory)  
  
- (void)startShakeAnimation;//摇动动画  
- (void)stopShakeAnimation;  
- (void)startRotateAnimation;//360°旋转动画  
- (void)stopRotateAnimation;  
  
///截图  
- (UIImage *)screenshot;  
  
@property (nonatomic) float top;  
@property (nonatomic) float bottom;  
@property (nonatomic) float left;  
@property (nonatomic) float right;  
  
@end  

@implementation UIView (MyCategory)  
  
/*截图*/  
- (UIImage *)screenshot  
{  
    UIGraphicsBeginImageContextWithOptions(self.frame.size, NO, 2.0);  
    [self.layer renderInContext:UIGraphicsGetCurrentContext()];  
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();  
    UIGraphicsEndImageContext();  
      
    return image;  
}  
  
  
  
#pragma mark - Animation  
  
- (void)startShakeAnimation  
{  
    CGFloat rotation = 0.05;  
      
    CABasicAnimation *shake = [CABasicAnimation animationWithKeyPath:@"transform"];  
    shake.duration = 0.2;  
    shake.autoreverses = YES;  
    shake.repeatCount = MAXFLOAT;  
    shake.removedOnCompletion = NO;  
    shake.fromValue = [NSValue valueWithCATransform3D:CATransform3DRotate(self.layer.transform, -rotation, 0.0, 0.0, 1.0)];  
    shake.toValue   = [NSValue valueWithCATransform3D:CATransform3DRotate(self.layer.transform,  rotation, 0.0, 0.0, 1.0)];  
      
    [self.layer addAnimation:shake forKey:@"shakeAnimation"];  
}  
  
- (void)stopShakeAnimation  
{  
    [self.layer removeAnimationForKey:@"shakeAnimation"];  
}  
  
- (void)startRotateAnimation  
{  
    CABasicAnimation *shake = [CABasicAnimation animationWithKeyPath:@"transform"];  
    shake.duration = 0.5;  
    shake.autoreverses = NO;  
    shake.repeatCount = MAXFLOAT;  
    shake.removedOnCompletion = NO;  
    shake.fromValue = [NSValue valueWithCATransform3D:CATransform3DRotate(self.layer.transform, M_PI, 0.0, 0.0, 1.0)];  
    shake.toValue   = [NSValue valueWithCATransform3D:CATransform3DRotate(self.layer.transform,  0.0, 0.0, 0.0, 1.0)];  
      
    [self.layer addAnimation:shake forKey:@"rotateAnimation"];  
}  
  
- (void)stopRotateAnimation  
{  
    [self.layer removeAnimationForKey:@"rotateAnimation"];  
}  
  
-(float)top  
{  
    return self.frame.origin.x;  
}  
-(float)bottom  
{  
    return self.top+self.frame.size.height;  
}  
-(float)left  
{  
    return self.frame.origin.x;  
}  
-(float)right  
{  
    return self.left+self.frame.size.width;  
}  
  
@end 
最后编辑于
©著作权归作者所有,转载或内容合作请联系作者
  • 序言:七十年代末,一起剥皮案震惊了整个滨河市,随后出现的几起案子,更是在滨河造成了极大的恐慌,老刑警刘岩,带你破解...
    沈念sama阅读 206,126评论 6 481
  • 序言:滨河连续发生了三起死亡事件,死亡现场离奇诡异,居然都是意外死亡,警方通过查阅死者的电脑和手机,发现死者居然都...
    沈念sama阅读 88,254评论 2 382
  • 文/潘晓璐 我一进店门,熙熙楼的掌柜王于贵愁眉苦脸地迎上来,“玉大人,你说我怎么就摊上这事。” “怎么了?”我有些...
    开封第一讲书人阅读 152,445评论 0 341
  • 文/不坏的土叔 我叫张陵,是天一观的道长。 经常有香客问我,道长,这世上最难降的妖魔是什么? 我笑而不...
    开封第一讲书人阅读 55,185评论 1 278
  • 正文 为了忘掉前任,我火速办了婚礼,结果婚礼上,老公的妹妹穿的比我还像新娘。我一直安慰自己,他们只是感情好,可当我...
    茶点故事阅读 64,178评论 5 371
  • 文/花漫 我一把揭开白布。 她就那样静静地躺着,像睡着了一般。 火红的嫁衣衬着肌肤如雪。 梳的纹丝不乱的头发上,一...
    开封第一讲书人阅读 48,970评论 1 284
  • 那天,我揣着相机与录音,去河边找鬼。 笑死,一个胖子当着我的面吹牛,可吹牛的内容都是我干的。 我是一名探鬼主播,决...
    沈念sama阅读 38,276评论 3 399
  • 文/苍兰香墨 我猛地睁开眼,长吁一口气:“原来是场噩梦啊……” “哼!你这毒妇竟也来了?” 一声冷哼从身侧响起,我...
    开封第一讲书人阅读 36,927评论 0 259
  • 序言:老挝万荣一对情侣失踪,失踪者是张志新(化名)和其女友刘颖,没想到半个月后,有当地人在树林里发现了一具尸体,经...
    沈念sama阅读 43,400评论 1 300
  • 正文 独居荒郊野岭守林人离奇死亡,尸身上长有42处带血的脓包…… 初始之章·张勋 以下内容为张勋视角 年9月15日...
    茶点故事阅读 35,883评论 2 323
  • 正文 我和宋清朗相恋三年,在试婚纱的时候发现自己被绿了。 大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。...
    茶点故事阅读 37,997评论 1 333
  • 序言:一个原本活蹦乱跳的男人离奇死亡,死状恐怖,灵堂内的尸体忽然破棺而出,到底是诈尸还是另有隐情,我是刑警宁泽,带...
    沈念sama阅读 33,646评论 4 322
  • 正文 年R本政府宣布,位于F岛的核电站,受9级特大地震影响,放射性物质发生泄漏。R本人自食恶果不足惜,却给世界环境...
    茶点故事阅读 39,213评论 3 307
  • 文/蒙蒙 一、第九天 我趴在偏房一处隐蔽的房顶上张望。 院中可真热闹,春花似锦、人声如沸。这庄子的主人今日做“春日...
    开封第一讲书人阅读 30,204评论 0 19
  • 文/苍兰香墨 我抬头看了看天上的太阳。三九已至,却和暖如春,着一层夹袄步出监牢的瞬间,已是汗流浃背。 一阵脚步声响...
    开封第一讲书人阅读 31,423评论 1 260
  • 我被黑心中介骗来泰国打工, 没想到刚下飞机就差点儿被人妖公主榨干…… 1. 我叫王不留,地道东北人。 一个月前我还...
    沈念sama阅读 45,423评论 2 352
  • 正文 我出身青楼,却偏偏与公主长得像,于是被迫代替她去往敌国和亲。 传闻我的和亲对象是个残疾皇子,可洞房花烛夜当晚...
    茶点故事阅读 42,722评论 2 345

推荐阅读更多精彩内容

  • 1、设置UILabel行间距 NSMutableAttributedString*attrString=[[NSM...
    iOS祎阅读 2,139评论 0 0
  • IOS第三方框架集合 转自 http://www.cnblogs.com/AlbertWang416/p/5783...
    还是老徐ooo阅读 302评论 0 0
  • 今日由微博(上图出处)知道V先生,对他产生兴趣,想要研究他的专栏领域,向他学习。发现他虽然是个文科生,却是个数据控...
    追风少女喃阅读 169评论 0 0
  • 01 许久未出门了,尽管阴天,可还是想出门走走,或许到外面的世界就能找到灵魂的喜悦! 你看那些早起的鸟儿都在心无旁...
    宛悦派阅读 374评论 2 4