/* DBLog 解决Xcode8下真机NSLog失效问题 和 在Release模式下屏蔽log */
#if DEBUG
#define DBLog(FORMAT, ...) fprintf(stderr,"%s:%d\t%s\n",[[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);
#else
#define DBLog(...)
#endif
/* 画一个像素的直线(设计师一般会要求这样纸) */
#define DB_SINGLE_LINE_WIDTH (1 / [UIScreen mainScreen].scale)
#define DB_SINGLE_LINE_ADJUST_OFFSET ((1 / [UIScreen mainScreen].scale) / 2)
/* 屏幕尺寸 */
#define DB_SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define DB_SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height
/* 系统版本 float类型 */
#define DB_IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
/* Bundle Info.plist */
#define DB_BundleInfoPlist [[NSBundle mainBundle] infoDictionary]
/* Bundle ID */
#define DB_Bundle_ID [[NSBundle mainBundle] bundleIdentifier]
/* Bundle Version */
#define DB_Bundle_Version [DB_BundleInfoPlist objectForKey:@"CFBundleVersion"]
/* Bundle ShortVersion */
#define DB_Bundle_ShortVersion [DB_BundleInfoPlist objectForKey:@"CFBundleShortVersionString"]
/*
* 移除警告⚠️ Possible Duplicate: performSelector may cause a leak because its selector is unknown
* http://stackoverflow.com/questions/11895287/performselector-arc-warning/11895530#11895530
*/
#define DBSuppressPerformSelectorLeakWarning(Stuff) \
do { \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") \
Stuff; \
_Pragma("clang diagnostic pop") \
} while (0)
/*
* 移除警告⚠️ PerformSelector may cause a leak because its selector is unknown
* http://stackoverflow.com/questions/8773226/performselector-warning
*/
#define DBSuppressPerformSelectorUndeclaredSelector(Stuff) \
do { \
_Pragma ("clang diagnostic push") \
_Pragma ("clang diagnostic ignored \"-Wundeclared-selector\"") \
Stuff; \
_Pragma ("clang diagnostic pop") \
} while (0)
/*
* 移除警告⚠️ 通用方法
* 参考：http://www.jianshu.com/p/eb03e20f7b1c 和 http://blog.163.com/smile_lxj/blog/static/2195626200821445250487/
* Exp: DBSuppressWarning("-Wundeclared-selector",[self performSelector:@selector(crash)];);
*/
#define DBSuppressWarning(Warning,Stuff) \
do { \
_Pragma ("clang diagnostic push") \
DB_Private_DiagnosticIgnore(Warning)\
Stuff; \
_Pragma ("clang diagnostic pop") \
} while (0)
#define DB_Private_DiagnosticIgnore(X) DB_Private_PRAGMA(clang diagnostic ignored X)
#define DB_Private_PRAGMA(X) _Pragma(#X)
/**
Synthsize a weak or strong reference.
Example:
@weakify(self)
[self doSomething^{
@strongify(self)
if (!self) return;
...
}];
*/
#ifndef weakify
#if DEBUG
#if __has_feature(objc_arc)
#define weakify(object) autoreleasepool{} __weak __typeof__(object) weak##_##object = object;
#else
#define weakify(object) autoreleasepool{} __block __typeof__(object) block##_##object = object;
#endif
#else
#if __has_feature(objc_arc)
#define weakify(object) try{} @finally{} {} __weak __typeof__(object) weak##_##object = object;
#else
#define weakify(object) try{} @finally{} {} __block __typeof__(object) block##_##object = object;
#endif
#endif
#endif
#ifndef strongify
#if DEBUG
#if __has_feature(objc_arc)
#define strongify(object) autoreleasepool{} __typeof__(object) object = weak##_##object;
#else
#define strongify(object) autoreleasepool{} __typeof__(object) object = block##_##object;
#endif
#else
#if __has_feature(objc_arc)
#define strongify(object) try{} @finally{} __typeof__(object) object = weak##_##object;
#else
#define strongify(object) try{} @finally{} __typeof__(object) object = block##_##object;
#endif
#endif
#endif
/** 是否为空或是[NSNull null] */
static inline BOOL DBIsNilOrNull(id _ref){
return (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]]));
}
/** 字符串是否为空 */
static inline BOOL DBIsStringEmpty(id _ref){
return (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]]) ||([(_ref)isEqualToString:@""]));
}
/** 数组是否为空 */
static inline BOOL DBIsArrayEmpty(id _ref){
return (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]]) ||([(_ref) count] == 0));
}
/**
Whether in main queue/thread.
*/
static inline bool db_dispatch_is_main_queue() {
return pthread_main_np() != 0;
}
/**
Submits a block for asynchronous execution on a main queue and returns immediately.
*/
static inline void db_dispatch_async_on_main_queue(void (^block)()) {
if (pthread_main_np()) {
block();
} else {
dispatch_async(dispatch_get_main_queue(), block);
}
}
/**
Submits a block for execution on a main queue and waits until the block completes.
*/
static inline void db_dispatch_sync_on_main_queue(void (^block)()) {
if (pthread_main_np()) {
block();
} else {
dispatch_sync(dispatch_get_main_queue(), block);
}
}
/**
* Instance Method Swizzling
*
* @param originalSelector <#originalSelector description#>
* @param swizzledSelector <#swizzledSelector description#>
* @param class <#class description#>
*/
static inline void DBExchangedInstanceMethod(SEL originalSelector, SEL swizzledSelector, Class aClass) {
Method originalMethod = class_getInstanceMethod(aClass, originalSelector);
Method swizzledMethod = class_getInstanceMethod(aClass, swizzledSelector);
BOOL didAddMethod =
class_addMethod(aClass,
originalSelector,
method_getImplementation(swizzledMethod),
method_getTypeEncoding(swizzledMethod));
if (didAddMethod) {
class_replaceMethod(aClass,
swizzledSelector,
method_getImplementation(originalMethod),
method_getTypeEncoding(originalMethod));
}
else {
method_exchangeImplementations(originalMethod, swizzledMethod);
}
}
/**
* Class Method Swizzling
*
* @param originalSelector <#originalSelector description#>
* @param swizzledSelector <#swizzledSelector description#>
* @param class <#class description#>
*/
static inline void DBExchangedClassMethod(SEL originalSelector, SEL swizzledSelector, Class aClass) {
Method originalMethod = class_getClassMethod(aClass, originalSelector);
Method newMethod = class_getClassMethod(aClass, swizzledSelector);
if (originalMethod && swizzledSelector) {
method_exchangeImplementations(originalMethod, newMethod);
}
}
可以复制到项目里直接使用~
Github地址