├── .DS_Store ├── .gitignore ├── LICENSE ├── README.md └── Runloop-性能优化，加载大图 ├── .DS_Store ├── Runloop-性能优化，加载大图.xcodeproj ├── project.pbxproj └── project.xcworkspace │ └── contents.xcworkspacedata └── Runloop-性能优化，加载大图 ├── .DS_Store ├── AppDelegate.h ├── AppDelegate.m ├── Assets.xcassets └── AppIcon.appiconset │ └── Contents.json ├── Base.lproj ├── LaunchScreen.storyboard └── Main.storyboard ├── Info.plist ├── RunloopClass ├── PQRunloop.h ├── PQRunloop.m ├── PQSingle.h ├── Utils.h └── Utils.m ├── ViewController.h ├── ViewController.m ├── main.m └── spaceship.jpg /.DS_Store: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codepgq/RunloopDemo/19722f0d94f0c151fd09d9f90d24bc40f4e2e22f/.DS_Store -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Xcode 2 | # 3 | # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore 4 | 5 | ## Build generated 6 | build/ 7 | DerivedData/ 8 | 9 | ## Various settings 10 | *.pbxuser 11 | !default.pbxuser 12 | *.mode1v3 13 | !default.mode1v3 14 | *.mode2v3 15 | !default.mode2v3 16 | *.perspectivev3 17 | !default.perspectivev3 18 | xcuserdata/ 19 | 20 | ## Other 21 | *.moved-aside 22 | *.xcuserstate 23 | 24 | ## Obj-C/Swift specific 25 | *.hmap 26 | *.ipa 27 | *.dSYM.zip 28 | *.dSYM 29 | 30 | # CocoaPods 31 | # 32 | # We recommend against adding the Pods directory to your .gitignore. 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324 | buildConfigurations = ( 325 | 601067551E65AFFA00481C99 /* Debug */, 326 | 601067561E65AFFA00481C99 /* Release */, 327 | ); 328 | defaultConfigurationIsVisible = 0; 329 | defaultConfigurationName = Release; 330 | }; 331 | 601067571E65AFFA00481C99 /* Build configuration list for PBXNativeTarget "Runloop-性能优化，加载大图" */ = { 332 | isa = XCConfigurationList; 333 | buildConfigurations = ( 334 | 601067581E65AFFA00481C99 /* Debug */, 335 | 601067591E65AFFA00481C99 /* Release */, 336 | ); 337 | defaultConfigurationIsVisible = 0; 338 | defaultConfigurationName = Release; 339 | }; 340 | /* End XCConfigurationList section */ 341 | }; 342 | rootObject = 601067381E65AFFA00481C99 /* Project object */; 343 | } 344 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/.DS_Store: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codepgq/RunloopDemo/19722f0d94f0c151fd09d9f90d24bc40f4e2e22f/Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/.DS_Store -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/AppDelegate.h: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.h 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/2/28. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface AppDelegate : UIResponder 12 | 13 | @property (strong, nonatomic) UIWindow *window; 14 | 15 | 16 | @end 17 | 18 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/AppDelegate.m: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.m 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/2/28. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import "AppDelegate.h" 10 | 11 | @interface AppDelegate () 12 | 13 | @end 14 | 15 | @implementation AppDelegate 16 | 17 | 18 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 19 | // Override point for customization after application launch. 20 | return YES; 21 | } 22 | 23 | 24 | - (void)applicationWillResignActive:(UIApplication *)application { 25 | // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 26 | // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. 27 | } 28 | 29 | 30 | - (void)applicationDidEnterBackground:(UIApplication *)application { 31 | // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 32 | // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 33 | } 34 | 35 | 36 | - (void)applicationWillEnterForeground:(UIApplication *)application { 37 | // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. 38 | } 39 | 40 | 41 | - (void)applicationDidBecomeActive:(UIApplication *)application { 42 | // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 43 | } 44 | 45 | 46 | - (void)applicationWillTerminate:(UIApplication *)application { 47 | // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 48 | } 49 | 50 | 51 | @end 52 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "iphone", 5 | "size" : "29x29", 6 | "scale" : "2x" 7 | }, 8 | { 9 | "idiom" : "iphone", 10 | "size" : "29x29", 11 | "scale" : "3x" 12 | }, 13 | { 14 | "idiom" : "iphone", 15 | "size" : "40x40", 16 | "scale" : "2x" 17 | }, 18 | { 19 | "idiom" : "iphone", 20 | "size" : "40x40", 21 | "scale" : "3x" 22 | }, 23 | { 24 | "idiom" : "iphone", 25 | "size" : "60x60", 26 | "scale" : "2x" 27 | }, 28 | { 29 | "idiom" : "iphone", 30 | "size" : "60x60", 31 | "scale" : "3x" 32 | }, 33 | { 34 | "idiom" : "ipad", 35 | "size" : "29x29", 36 | "scale" : "1x" 37 | }, 38 | { 39 | "idiom" : "ipad", 40 | "size" : "29x29", 41 | "scale" : "2x" 42 | }, 43 | { 44 | "idiom" : "ipad", 45 | "size" : "40x40", 46 | "scale" : "1x" 47 | }, 48 | { 49 | "idiom" : "ipad", 50 | "size" : "40x40", 51 | "scale" : "2x" 52 | }, 53 | { 54 | "idiom" : "ipad", 55 | "size" : "76x76", 56 | "scale" : "1x" 57 | }, 58 | { 59 | "idiom" : "ipad", 60 | "size" : "76x76", 61 | "scale" : "2x" 62 | } 63 | ], 64 | "info" : { 65 | "version" : 1, 66 | "author" : "xcode" 67 | } 68 | } -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | LSRequiresIPhoneOS 22 | 23 | UILaunchStoryboardName 24 | LaunchScreen 25 | UIMainStoryboardFile 26 | Main 27 | UIRequiredDeviceCapabilities 28 | 29 | armv7 30 | 31 | UISupportedInterfaceOrientations 32 | 33 | UIInterfaceOrientationPortrait 34 | UIInterfaceOrientationLandscapeLeft 35 | UIInterfaceOrientationLandscapeRight 36 | 37 | UISupportedInterfaceOrientations~ipad 38 | 39 | UIInterfaceOrientationPortrait 40 | UIInterfaceOrientationPortraitUpsideDown 41 | UIInterfaceOrientationLandscapeLeft 42 | UIInterfaceOrientationLandscapeRight 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/RunloopClass/PQRunloop.h: -------------------------------------------------------------------------------- 1 | // 2 | // PQRunloop.h 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/3/1. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | /* 10 | 为什么要优化： 11 | Runloop会在一次循环中绘制屏幕上所有的点，如果加载的图片过大，过多，就会造成需要绘制很多的 12 | 的点，导致一次循环的时间过长，从而导致UI卡顿。 13 | */ 14 | 15 | #import 16 | #import "PQSingle.h" 17 | typedef BOOL(^RunloopBlock)(void); 18 | @interface PQRunloop : NSObject 19 | PQSINGLE_H(Instance) 20 | //最大任务加载数 默认18(这里主要看屏幕能显示最多少个图片来确定) 21 | @property (nonatomic,assign) NSUInteger maxQueue; 22 | //添加任务 23 | - (void)addTask:(RunloopBlock)unit withId:(id)key; 24 | //移除所有任务 25 | - (void)removeAllTasks; 26 | @end 27 | 28 | 29 | //动态添加属性 30 | @interface UITableViewCell (PQRunloop) 31 | 32 | @property (nonatomic, strong) NSIndexPath *willShowIndexpath; 33 | 34 | @end 35 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/RunloopClass/PQRunloop.m: -------------------------------------------------------------------------------- 1 | // 2 | // PQRunloop.m 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/3/1. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import "PQRunloop.h" 10 | #import 11 | 12 | @interface PQRunloop () 13 | //定时器 这里定时器里面不要进行操作，否则可能会导致反优化（如果处理了耗时操作，电池电量也会加快） 14 | @property (nonatomic,strong) NSTimer * timer; 15 | //任务数组 16 | @property (nonatomic,strong) NSMutableArray * tasks; 17 | //任务的keys 18 | @property (nonatomic,strong) NSMutableArray * taskKeys; 19 | 20 | @end 21 | 22 | @implementation PQRunloop 23 | PQSINGLE_M(Instance) 24 | 25 | - (instancetype)init 26 | { 27 | self = [super init]; 28 | if (self) { 29 | //初始化对象／基本信息 30 | self.maxQueue = 18; 31 | self.tasks = [NSMutableArray array]; 32 | self.taskKeys = [NSMutableArray array]; 33 | self.timer = [NSTimer scheduledTimerWithTimeInterval:0.001 repeats:YES block:^(NSTimer * _Nonnull timer) { }]; 34 | //添加Runloop观察者 35 | [self addRunloopObserver]; 36 | } 37 | return self; 38 | } 39 | 40 | //删除所有任务 41 | - (void)removeAllTasks{ 42 | [self.taskKeys removeAllObjects]; 43 | [self.tasks removeAllObjects]; 44 | } 45 | 46 | //add task 添加任务 47 | - (void)addTask:(RunloopBlock)unit withId:(id)key{ 48 | //添加任务到数组 49 | [self.tasks addObject:unit]; 50 | [self.taskKeys addObject:key]; 51 | 52 | //为了保证加载到图片最大数是18所以要删除 53 | if (self.tasks.count > self.maxQueue) { 54 | [self.tasks removeObjectAtIndex:0]; 55 | [self.taskKeys removeObjectAtIndex:0]; 56 | } 57 | } 58 | 59 | //这里处理耗时操作了 60 | static void Callback(CFRunLoopObserverRef observer, CFRunLoopActivity activity, void *info){ 61 | 62 | //通过info桥接为当前的对象 63 | PQRunloop * runloop = (__bridge PQRunloop *)info; 64 | 65 | //如果没有任务，就直接返回 66 | if (runloop.tasks.count == 0) { 67 | return; 68 | } 69 | 70 | BOOL result = NO; 71 | while (result == NO && runloop.tasks.count) { 72 | 73 | //取出任务 74 | RunloopBlock unit = runloop.tasks.firstObject; 75 | 76 | //执行任务 77 | result = unit(); 78 | 79 | //删除任务 80 | [runloop.tasks removeObjectAtIndex:0]; 81 | } 82 | } 83 | 84 | //添加runloop监听者 85 | - (void)addRunloopObserver{ 86 | 87 | // 获取 当前的Runloop ref - 指针 88 | CFRunLoopRef current = CFRunLoopGetCurrent(); 89 | 90 | //定义一个RunloopObserver 91 | CFRunLoopObserverRef defaultModeObserver; 92 | 93 | //上下文 94 | /* 95 | typedef struct { 96 | CFIndex version; //版本号 long 97 | void * info; //这里我们要填写对象（self或者传进来的对象） 98 | const void *(*retain)(const void *info); //填写&CFRetain 99 | void (*release)(const void *info); //填写&CGFRelease 100 | CFStringRef (*copyDescription)(const void *info); //NULL 101 | } CFRunLoopObserverContext; 102 | */ 103 | CFRunLoopObserverContext context = { 104 | 0, 105 | (__bridge void *)(self), 106 | &CFRetain, 107 | &CFRelease, 108 | NULL 109 | }; 110 | 111 | /* 112 | 1 NULL空指针 nil空对象 这里填写NULL 113 | 2 模式 114 | kCFRunLoopEntry = (1UL << 0), 115 | kCFRunLoopBeforeTimers = (1UL << 1), 116 | kCFRunLoopBeforeSources = (1UL << 2), 117 | kCFRunLoopBeforeWaiting = (1UL << 5), 118 | kCFRunLoopAfterWaiting = (1UL << 6), 119 | kCFRunLoopExit = (1UL << 7), 120 | kCFRunLoopAllActivities = 0x0FFFFFFFU 121 | 3 是否重复 - YES 122 | 4 nil 或者 NSIntegerMax - 999 123 | 5 回调 124 | 6 上下文 125 | */ 126 | // 创建观察者 127 | defaultModeObserver = CFRunLoopObserverCreate(NULL, 128 | kCFRunLoopBeforeWaiting, YES, 129 | NSIntegerMax - 999, 130 | &Callback, 131 | &context); 132 | 133 | //添加当前runloop的观察着 134 | CFRunLoopAddObserver(current, defaultModeObserver, kCFRunLoopDefaultMode); 135 | 136 | //释放 137 | CFRelease(defaultModeObserver); 138 | } 139 | 140 | @end 141 | 142 | 143 | //动态添加属性 144 | @implementation UITableViewCell (PQRunloop) 145 | 146 | - (NSIndexPath *)willShowIndexpath { 147 | NSIndexPath *indexPath = objc_getAssociatedObject(self, @selector(willShowIndexpath)); 148 | return indexPath; 149 | } 150 | 151 | - (void)setWillShowIndexpath:(NSIndexPath *)willShowIndexpath{ 152 | objc_setAssociatedObject(self, @selector(willShowIndexpath), willShowIndexpath, OBJC_ASSOCIATION_RETAIN_NONATOMIC); 153 | } 154 | 155 | @end 156 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/RunloopClass/PQSingle.h: -------------------------------------------------------------------------------- 1 | // 2 | // PQSingle.h 3 | // SingleClassDemo 4 | // 5 | // Created by Mac on 16/12/21. 6 | // Copyright © 2016年 Mac. All rights reserved. 7 | // 8 | 9 | #ifndef PQSingle_h 10 | #define PQSingle_h 11 | 12 | #define PQSINGLE_H(name) +(instancetype)share##name; 13 | 14 | #if __has_feature(objc_arc) 15 | 16 | #define PQSINGLE_M(name) static id _singleManager = nil;\ 17 | + (instancetype)share##name{\ 18 | static dispatch_once_t onceToken;\ 19 | dispatch_once(&onceToken, ^{\ 20 | _singleManager = [[self alloc] init];\ 21 | });\ 22 | return _singleManager;\ 23 | }\ 24 | \ 25 | + (instancetype)allocWithZone:(struct _NSZone *)zone{\ 26 | static dispatch_once_t onceToken;\ 27 | dispatch_once(&onceToken, ^{\ 28 | _singleManager = [super allocWithZone:zone];\ 29 | });\ 30 | return _singleManager;\ 31 | }\ 32 | \ 33 | - (id)mutableCopy{\ 34 | return _singleManager;\ 35 | }\ 36 | \ 37 | - (id)copy{\ 38 | return _singleManager;\ 39 | } 40 | 41 | #else 42 | 43 | #define PQSINGLE_M(name) static id _singleManager = nil;\ 44 | + (instancetype)share##name{\ 45 | return [[self alloc]init];\ 46 | }\ 47 | \ 48 | + (instancetype)allocWithZone:(struct _NSZone *)zone{\ 49 | static dispatch_once_t onceToken;\ 50 | dispatch_once(&onceToken, ^{\ 51 | _singleManager = [super allocWithZone:zone];\ 52 | });\ 53 | return _singleManager;\ 54 | }\ 55 | \ 56 | - (id)mutableCopy{\ 57 | return _singleManager;\ 58 | }\ 59 | \ 60 | - (id)copy{\ 61 | return _singleManager;\ 62 | }\ 63 | - (oneway void)release{\ 64 | }\ 65 | \ 66 | - (instancetype)retain{\ 67 | return _singleManager;\ 68 | }\ 69 | \ 70 | - (NSUInteger)retainCount{\ 71 | return 9999;\ 72 | }\ 73 | 74 | #endif 75 | 76 | #endif /* PQSingle_h */ 77 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/RunloopClass/Utils.h: -------------------------------------------------------------------------------- 1 | // 2 | // Utils.h 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/3/1. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface Utils : NSObject 12 | 13 | /** 14 | 创建ImageView的工厂 15 | 16 | @param frame 大小位置 17 | @param tag tag值，用于移除 18 | @return UIImageView 19 | */ 20 | + (UIImageView*)createImageWithFrame:(CGRect)frame tag:(NSInteger)tag; 21 | 22 | 23 | /** 24 | 创建Label的工厂 25 | 26 | @param frame 大小位置 27 | @param tag tag值，用于移除 28 | @param text 文本内容 29 | @param color 文本颜色 30 | @return UILabel 31 | */ 32 | + (UILabel *)createLabelWithFrame:(CGRect)frame tag:(NSInteger)tag text:(NSString *)text textColor:(UIColor *)color; 33 | @end 34 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/RunloopClass/Utils.m: -------------------------------------------------------------------------------- 1 | // 2 | // Utils.m 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/3/1. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import "Utils.h" 10 | 11 | @implementation Utils 12 | 13 | + (UIImageView*)createImageWithFrame:(CGRect)frame tag:(NSInteger)tag{ 14 | UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame]; 15 | imageView.tag = tag; 16 | NSString *path = [[NSBundle mainBundle] pathForResource:@"spaceship" ofType:@"jpg"]; 17 | UIImage *image = [UIImage imageWithContentsOfFile:path]; 18 | imageView.contentMode = UIViewContentModeScaleAspectFit; 19 | imageView.image = image; 20 | return imageView; 21 | } 22 | 23 | + (UILabel *)createLabelWithFrame:(CGRect)frame tag:(NSInteger)tag text:(NSString *)text textColor:(UIColor *)color{ 24 | UILabel *label = [[UILabel alloc] initWithFrame:frame]; 25 | label.backgroundColor = [UIColor clearColor]; 26 | label.textColor = color; 27 | label.text = text; 28 | label.font = [UIFont boldSystemFontOfSize:13]; 29 | label.tag = tag; 30 | label.numberOfLines = 0; 31 | return label; 32 | } 33 | 34 | @end 35 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/ViewController.h: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.h 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/2/28. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import 10 | 11 | @interface ViewController : UIViewController 12 | 13 | 14 | @end 15 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/ViewController.m: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.m 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/2/28. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import "ViewController.h" 10 | /* 11 | 思想： 12 | 1 加载图片的代码保存起来，不要直接执行，用一个数组保存 13 | block 14 | 2 监听我们的Runloop循环 15 | CFRunloop CFRunloopObserver 16 | 3 每次Runloop循环就让它从数组里面去一个加载图片等任务出来执行 17 | */ 18 | 19 | #import "PQRunloop.h" 20 | #import "Utils.h" 21 | @interface ViewController () 22 | @property (weak, nonatomic) IBOutlet UITableView *tableView; 23 | @end 24 | 25 | static NSString * const CellIdentifier = @"CellIdentifier"; 26 | @implementation ViewController 27 | 28 | - (void)viewDidLoad { 29 | [super viewDidLoad]; 30 | //提前注册cell 31 | [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:CellIdentifier]; 32 | } 33 | 34 | - (void)didReceiveMemoryWarning { 35 | [super didReceiveMemoryWarning]; 36 | [[PQRunloop shareInstance] removeAllTasks]; 37 | } 38 | 39 | #pragma MARK - Talbeview Delegate 40 | 41 | - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ 42 | return 100; 43 | } 44 | 45 | - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ 46 | UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 47 | //先赋值将要显示的indexPath 48 | cell.willShowIndexpath = indexPath; 49 | 50 | //先移除 51 | for (NSInteger i = 1; i <= 5; i++) { 52 | [[cell.contentView viewWithTag:i] removeFromSuperview]; 53 | } 54 | //添加文字 55 | [ViewController addLabel:cell indexPath:indexPath]; 56 | 57 | #if 0 //是否开启Runloop优化 58 | 59 | // 使用优化 60 | [[PQRunloop shareInstance] addTask:^BOOL{ 61 | if (![cell.willShowIndexpath isEqual:indexPath]) { 62 | return NO; 63 | } 64 | [ViewController addCenterImg:cell]; 65 | return YES; 66 | } withId:indexPath]; 67 | 68 | [[PQRunloop shareInstance] addTask:^BOOL{ 69 | if (![cell.willShowIndexpath isEqual:indexPath]) { 70 | return NO; 71 | } 72 | [ViewController addRightImg:cell]; 73 | return YES; 74 | } withId:indexPath]; 75 | 76 | [[PQRunloop shareInstance] addTask:^BOOL{ 77 | if (![cell.willShowIndexpath isEqual:indexPath]) { 78 | return NO; 79 | } 80 | [ViewController addLeftImg:cell indexPath:indexPath]; 81 | return YES; 82 | } withId:indexPath]; 83 | #else 84 | // 不使用优化 85 | [ViewController addCenterImg:cell]; 86 | [ViewController addRightImg:cell]; 87 | [ViewController addLeftImg:cell indexPath:indexPath]; 88 | 89 | #endif 90 | return cell; 91 | } 92 | 93 | 94 | /** 95 | 添加View到ContentView中，使用CoreAnimation动画 96 | 97 | @param cell cell 98 | @param view 需要加入的View 99 | */ 100 | + (void)addViewWith:(UITableViewCell *)cell view:(UIView *)view{ 101 | [UIView transitionWithView:cell.contentView duration:0.3 options:UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionTransitionCrossDissolve animations:^{ 102 | [cell.contentView addSubview:view]; 103 | } completion:^(BOOL finished) { 104 | }]; 105 | } 106 | 107 | 108 | /** 109 | 创建一个Label 110 | 111 | @param cell cell 112 | @param indexPath 用来拼接 113 | */ 114 | + (void)addLabel:(UITableViewCell *)cell indexPath:(NSIndexPath *)indexPath { 115 | NSString * text = [NSString stringWithFormat:@"%zd - Runloop性能优化：一次绘制一张图片。", indexPath.row]; 116 | UILabel *label = [Utils createLabelWithFrame:CGRectMake(5, 5, 300, 25) tag:1 text:text textColor:[UIColor orangeColor]]; 117 | 118 | [cell.contentView addSubview:label]; 119 | } 120 | 121 | 122 | /** 123 | 添加中间图片 124 | 125 | @param cell cell 126 | */ 127 | + (void)addCenterImg:(UITableViewCell *)cell{ 128 | UIImageView *imageView = [Utils createImageWithFrame:CGRectMake(105, 20, 85, 85) tag:2]; 129 | [self addViewWith:cell view:imageView]; 130 | } 131 | 132 | 133 | /** 134 | 添加右边图片 135 | 136 | @param cell cell 137 | */ 138 | + (void)addRightImg:(UITableViewCell *)cell{ 139 | UIImageView *imageView = [Utils createImageWithFrame:CGRectMake(200, 20, 85, 85) tag:3]; 140 | [self addViewWith:cell view:imageView]; 141 | } 142 | 143 | 144 | /** 145 | 添加左边图片和 label 146 | 147 | @param cell cell 148 | @param indexPath 用来拼接字符串使用 149 | */ 150 | + (void)addLeftImg:(UITableViewCell *)cell indexPath:(NSIndexPath *)indexPath { 151 | NSString *text = [NSString stringWithFormat:@"%zd - 在Runloop中一次循环绘制所有的点，这里显示加载大图，使得绘制的点增多，从而导致Runloop的点一次循环时间增长，从而导致UI卡顿。", indexPath.row]; 152 | 153 | UILabel *label = [Utils createLabelWithFrame:CGRectMake(5, 99, [UIScreen mainScreen].bounds.size.width - 10, 50) tag:4 text:text textColor:[UIColor colorWithRed:0.2 green:100.f/255.f blue:0 alpha:1]]; 154 | 155 | UIImageView *imageView = [Utils createImageWithFrame:CGRectMake(5, 20, 85, 85) tag:5]; 156 | [self addViewWith:cell view:label]; 157 | [self addViewWith:cell view:imageView]; 158 | } 159 | 160 | @end 161 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/main.m: -------------------------------------------------------------------------------- 1 | // 2 | // main.m 3 | // Runloop-性能优化，加载大图 4 | // 5 | // Created by codepgq on 2017/2/28. 6 | // Copyright © 2017年 pgq. All rights reserved. 7 | // 8 | 9 | #import 10 | #import "AppDelegate.h" 11 | 12 | int main(int argc, char * argv[]) { 13 | @autoreleasepool { 14 | return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/spaceship.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codepgq/RunloopDemo/19722f0d94f0c151fd09d9f90d24bc40f4e2e22f/Runloop-性能优化，加载大图/Runloop-性能优化，加载大图/spaceship.jpg --------------------------------------------------------------------------------