自己新添加的一些可用常用定义:(下载地址:http://download.csdn.net/detail/hbblzjy/9570700)
//安全释放 #define RELEASE_SAFELY(__Pointer) do{[__Pointer release],__Pointer = nil;} while(0) // 屏幕的物理高度 #define ScreenHeight [UIScreen mainScreen].bounds.size.height // 屏幕的物理宽度 #define ScreenWidth [UIScreen mainScreen].bounds.size.width // 调试 #define NSLOG_FUNCTION NSLog(@"%s,%d",__FUNCTION__,__LINE__) //----------------------图片类———————————————————————————————————————— //读取本地图片 #define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]] //定义UIImage对象 #define IMAGE(A) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:A ofType:nil]] //定义UIImage对象 #define ImageNamed(_pointer) [UIImage imageNamed:_pointer] //———————————————————————颜色类———————————————————————————-----————————————— // rgb颜色转换(16进制->10进制) #define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0] //带有RGBA的颜色设置 #define COLOR(R, G, B, A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A] // 获取RGB颜色 #define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a] #define RGB(r,g,b) RGBA(r,g,b,1.0f) //背景色 #define BACKGROUND_COLOR [UIColor colorWithRed:242.0/255.0 green:236.0/255.0 blue:231.0/255.0 alpha:1.0] //清除背景色 #define CLEARCOLOR [UIColor clearColor] #pragma mark - color functions #define RGBCOLOR(r,g,b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1] #define RGBACOLOR(r,g,b,a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)] //———————————————————————TAG宏———————————————————————————-----————————————— //viewWithTag #define VIEWWITHTAG(_OBJECT, _TAG) [_OBJECT viewWithTag : _TAG] //———————————————————————单例模式宏———————————————————————————-----————————————— //.h文件处的声明 #define DEFINE_SINGLETON_FOR_HEADER(className) \ + (className *)shared##className; //.m文件处的声明 #define DEFINE_SINGLETON_FOR_CLASS(className) \ + (className *)shared##className { \ static className *shared##className = nil; \ static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ shared##className = [[self alloc] init]; \ }); return shared##className; \ } //———————————————————————单例模式———————————————————————————-----————————————— static DataBaseHandle * handle = nil; + (DataBaseHandle *)shareInstance { @synchronized(self){ if (!handle) { handle = [[DataBaseHandle alloc] init]; } } return handle; } —————————————不用你把所有NSLog的删除或注释,直接修改#if 判断的值就行了(1执行,0不执行)—————————————— #if 1 #define NSLog(FORMAT, ...) fprintf(stderr,"[%s:%d行] %s\n",[[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]); #else #define NSLog(FORMAT, ...) nil #endif #define NEED_OUTPUT_LOG 0 #if NEED_OUTPUT_LOG #define SLog(xx, ...) NSLog(xx, ##__VA_ARGS__) #define SLLog(xx, ...) NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__) #define SLLogRect(rect) \ SLLog(@"%s x=%f, y=%f, w=%f, h=%f", #rect, rect.origin.x, rect.origin.y, \ rect.size.width, rect.size.height) #define SLLogPoint(pt) \ SLLog(@"%s x=%f, y=%f", #pt, pt.x, pt.y) #define SLLogSize(size) \ SLLog(@"%s w=%f, h=%f", #size, size.width, size.height) #define SLLogColor(_COLOR) \ SLLog(@"%s h=%f, s=%f, v=%f", #_COLOR, _COLOR.hue, _COLOR.saturation, _COLOR.value) #define SLLogSuperViews(_VIEW) \ { for (UIView* view = _VIEW; view; view = view.superview) { SLLog(@"%@", view); } } #define SLLogSubViews(_VIEW) \ { for (UIView* view in [_VIEW subviews]) { SLLog(@"%@", view); } } #else #define SLog(xx, ...) ((void)0) #define SLLog(xx, ...) ((void)0) #endif
参考别人的定义:
1.获取屏幕宽度与高度
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
//iOS8以后,设备横屏,[UIScreen mainScreen].bounds.size的值是宽大于高的,即iOS8以后这个值跟屏幕方向有关了
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 当前Xcode支持iOS8及以上
#define SCREEN_WIDTH ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.width)
#define SCREENH_HEIGHT ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.height)
#define SCREEN_SIZE ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?CGSizeMake([UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale,[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale):[UIScreen mainScreen].bounds.size)
#else
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
#define SCREEN_SIZE [UIScreen mainScreen].bounds.size
#endif
2.获取通知中心
#define LRNotificationCenter [NSNotificationCenter defaultCenter]
3.设置随机颜色
#define LRRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0 green:arc4random_uniform(256)/255.0
blue:arc4random_uniform(256)/255.0 alpha:1.0]
4.设置RGB颜色/设置RGBA颜色
#define LRRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
#define LRRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]
// clear背景颜色
#define LRClearColor [UIColor clearColor]
5.自定义高效率的 NSLog
项目开发中,我们会在许多地方加上Log,但是发布的时候又不想用这些Log,我们也不可能一个一个的删除,所以自定义Log是必然的!
#ifdef DEBUG
#define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#define LRLog(...)
#endif
6.弱引用/强引用
#define LRWeakSelf(type) __weak typeof(type) weak##type = type;
#define LRStrongSelf(type) __strong typeof(type) type = weak##type;
使用方法.png
第二种使用方法,定义完弱引用宏之后,直接敲weak.png
7.设置 view 圆角和边框
#define LRViewBorderRadius(View, Radius, Width, Color)\
[View.layer setCornerRadius:(Radius)];[View.layer setMasksToBounds:YES];[View.layer setBorderWidth:(Width)];[View.layer setBorderColor:[Color CGColor]]
8.由角度转换弧度 由弧度转换角度
#define LRDegreesToRadian(x) (M_PI * (x) / 180.0)
#define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)
9.设置加载提示框(第三方框架:Toast)
此宏定义非常好用,但是小伙伴需要CocoaPods导入第三方框架:Toast
使用方法如下:
LRToast(@"网络加载失败");
#define LRToast(str) CSToastStyle *style = [[CSToastStyle alloc] initWithDefaultStyle]; [kWindow makeToast:str duration:0.6 position:CSToastPositionCenter style:style];kWindow.userInteractionEnabled = NO; dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.6 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{kWindow.userInteractionEnabled = YES;});\
10.设置加载提示框(第三方框架:MBProgressHUD)
此宏定义同上一个类似,如下图:
MBProgressHUD提示框.png
// 加载
#define kShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES
// 收起加载
#define HideNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = NO
// 设置加载
#define NetworkActivityIndicatorVisible(x) [UIApplication sharedApplication].networkActivityIndicatorVisible = x
#define kWindow [UIApplication sharedApplication].keyWindow
#define kBackView for (UIView *item in kWindow.subviews) { if(item.tag == 10000) { [item removeFromSuperview]; UIView * aView = [[UIView alloc] init]; aView.frame = [UIScreen mainScreen].bounds; aView.tag = 10000; aView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3]; [kWindow addSubview:aView]; } }
#define kShowHUDAndActivity kBackView;[MBProgressHUD showHUDAddedTo:kWindow animated:YES];kShowNetworkActivityIndicator()
#define kHiddenHUD [MBProgressHUD hideAllHUDsForView:kWindow animated:YES]
#define kRemoveBackView for (UIView *item in kWindow.subviews) { if(item.tag == 10000) { [UIView animateWithDuration:0.4 animations:^{ item.alpha = 0.0; } completion:^(BOOL finished) { [item removeFromSuperview]; }]; } }
#define kHiddenHUDAndAvtivity kRemoveBackView;kHiddenHUD;HideNetworkActivityIndicator()
11.获取view的frame/图片资源
//获取view的frame
#define kGetViewWidth(view) view.frame.size.width
#define kGetViewHeight(view) view.frame.size.height
#define kGetViewX(view) view.frame.origin.x
#define kGetViewY(view) view.frame.origin.y
//获取图片资源
#define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
12.获取当前语言
#define LRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
13.使用 ARC 和 MRC
#if __has_feature(objc_arc)
// ARC
#else
// MRC
#endif
14.判断当前的iPhone设备/系统版本
//判断是否为iPhone
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
//判断是否为iPad
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
//判断是否为ipod
#define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])
// 判断是否为 iPhone 5SE
#define iPhone5SE [[UIScreen mainScreen] bounds].size.width == 320.0f && [[UIScreen mainScreen] bounds].size.height == 568.0f
// 判断是否为iPhone 6/6s
#define iPhone6_6s [[UIScreen mainScreen] bounds].size.width == 375.0f && [[UIScreen mainScreen] bounds].size.height == 667.0f
// 判断是否为iPhone 6Plus/6sPlus
#define iPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width == 414.0f && [[UIScreen mainScreen] bounds].size.height == 736.0f
//获取系统版本
#define IOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
//判断 iOS 8 或更高的系统版本
#define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO))
15.判断是真机还是模拟器
#if TARGET_OS_IPHONE
//iPhone Device
#endif
#if TARGET_IPHONE_SIMULATOR
//iPhone Simulator
#endif
16.沙盒目录文件
//获取temp
#define kPathTemp NSTemporaryDirectory()
//获取沙盒 Document
#define kPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
//获取沙盒 Cache
#define kPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
17.GCD 的宏定义
很多小伙伴都非常烦写GCD的方法,所以在此定义为宏使用更加方便简洁!如下图:
GCD 宏使用方法.png
//GCD - 一次性执行
#define kDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock);
//GCD - 在Main线程上运行
#define kDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock);
//GCD - 开启异步线程
#define kDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), globalQueueBlocl);
宏与const 的使用:
很多小伙伴在定义一个常量字符串,都会定义成一个宏,最典型的例子就是服务器的地址。在此所有用宏定义常量字符的小伙伴以后就用const来定义吧!为什么呢 ?我们看看:
- 宏的用法: 一般字符串抽成宏,代码抽成宏使用。
- const用法:一般常用的字符串定义成const(对于常量字符串苹果推荐我们使用const)。
- 宏与const区别:
1.编译时刻不同,宏属于
预编译
,const属于编译时刻
2.宏能定义代码,const不能,多个宏对于编译会相对时间较长,影响开发效率,调试过慢,const只会编译一次,缩短编译时间。
3.宏不会检查错误,const会检查错误
通过以上对比,我们以后在开发中如果定义一个常量字符串就用const,定义代码就用宏。我们来看看如何使用const,列举实际项目使用方法如下图:
FANCommonConst.h中声明一个常量字符串.png
FANCommonConst.m中实现一个常量字符串.png
在上图本人只是简单定义几个常量字符串,我们创建一个类只要在.h
和.m
中包含#import <Foundation/Foundation.h>
就可以,然后再.h
文件声明一个字符串,在.m
中实现就可以了,最后把这个类导入PCH
文件中,我们就可任意的发挥啦!
时间: 2024-11-05 12:03:53