iOS-常用宏定义

最新推荐文章于 2024-05-14 10:36:27 发布

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本文介绍了在iOS开发中如何定义屏幕宽度、高度及颜色等宏，并提供了针对不同iOS版本的适配方案，确保应用程序能在多种设备上正常显示。

#define SCREEN_WIDTH   [UIScreen mainScreen].bounds.size.width
#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height

#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

#define weakify(...) \\
    autoreleasepool {} \\
    metamacro_foreach_cxt(rac_weakify_,, __weak, __VA_ARGS__)

#define strongify(...) \\
    try {} @finally {} \\
    _Pragma("clang diagnostic push") \\
    _Pragma("clang diagnostic ignored \\"-Wshadow\\"") \\
    metamacro_foreach(rac_strongify_,, __VA_ARGS__) \\
    _Pragma("clang diagnostic pop")

#define WeakSelf(type)  __weak typeof(type) weak##type = type;
#define StrongSelf(type)  __strong typeof(type) type = weak##type;

#ifdef DEBUG
#define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#define LRLog(...)
    
#endif

#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]

#define NotificationCenter [NSNotificationCenter defaultCenter]