runtime|runtime 计算页面加载时间 runtime计算页面加载时间

#import
#import
@interface UIViewController (Swizzle)
@property(nonatomic,assign) CFAbsoluteTime viewLoadStartTime;
@end
#import "UIViewController+Swizzle.h"
#import
static char *viewLoadStartTimeKey = "viewLoadStartTimeKey";
@implementation UIViewController (Swizzle)
-(void)setViewLoadStartTime:(CFAbsoluteTime)viewLoadStartTime{
objc_setAssociatedObject(self, &viewLoadStartTimeKey, @(viewLoadStartTime), OBJC_ASSOCIATION_COPY);
}
-(CFAbsoluteTime)viewLoadStartTime{
return [objc_getAssociatedObject(self, &viewLoadStartTimeKey) doubleValue];
}
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
SEL origSel = @selector(viewDidAppear:);
SEL swizSel = @selector(swiz_viewDidAppear:);
[UIViewController swizzleMethods:[self class] originalSelector:origSel swizzledSelector:swizSel];
SEL vcWillAppearSel=@selector(viewWillAppear:);
SEL swizWillAppearSel=@selector(swiz_viewWillAppear:);
[UIViewController swizzleMethods:[self class] originalSelector:vcWillAppearSel swizzledSelector:swizWillAppearSel];
SEL vcDidLoadSel=@selector(viewDidLoad);
SEL swizDidLoadSel=@selector(swiz_viewDidLoad);
[UIViewController swizzleMethods:[self class] originalSelector:vcDidLoadSel swizzledSelector:swizDidLoadSel];
SEL vcDidDisappearSel=@selector(viewDidDisappear:);
SEL swizDidDisappearSel=@selector(swiz_viewDidDisappear:);
[UIViewController swizzleMethods:[self class] originalSelector:vcDidDisappearSel swizzledSelector:swizDidDisappearSel];
SEL vcWillDisappearSel=@selector(viewWillDisappear:);
SEL swizWillDisappearSel=@selector(swiz_viewWillDisappear:);
[UIViewController swizzleMethods:[self class] originalSelector:vcWillDisappearSel swizzledSelector:swizWillDisappearSel];
});
}
+ (void)swizzleMethods:(Class)class originalSelector:(SEL)origSel swizzledSelector:(SEL)swizSel
{
Method origMethod = class_getInstanceMethod(class, origSel);
Method swizMethod = class_getInstanceMethod(class, swizSel);
//class_addMethod will fail if original method already exists
BOOL didAddMethod = class_addMethod(class, origSel, method_getImplementation(swizMethod), method_getTypeEncoding(swizMethod));
if (didAddMethod) {
class_replaceMethod(class, swizSel, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
} else {
//origMethod and swizMethod already exist
method_exchangeImplementations(origMethod, swizMethod);
}
}
- (void)swiz_viewDidAppear:(BOOL)animated
{
[self swiz_viewDidAppear:animated];
if (self.viewLoadStartTime) {
CFAbsoluteTime linkTime = (CACurrentMediaTime() - self.viewLoadStartTime);
NGLog(@" %f s--------------------ssssss%@:速度：%f s",self.viewLoadStartTime, self.class,linkTime);
self.viewLoadStartTime = 0;
}
}
-(void)swiz_viewWillAppear:(BOOL)animated
{
[self swiz_viewWillAppear:animated];
}
-(void)swiz_viewDidDisappear:(BOOL)animated
{
[self swiz_viewDidDisappear:animated];
}
-(void)swiz_viewWillDisappear:(BOOL)animated
{
[self swiz_viewWillDisappear:animated];
}
-(void)swiz_viewDidLoad
{
self.viewLoadStartTime =CACurrentMediaTime();
NSLog(@" %@swiz_viewDidLoad startTime:%f",self.class, self.viewLoadStartTime );
[self swiz_viewDidLoad];
}
【runtime|runtime 计算页面加载时间】@end

runtime|runtime 计算页面加载时间

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