RunLoop在项目中的应用
源码：https://github.com/baitxaps/Block
//1.AFNetworking中RunLoop的创建
- (void)netWorkRequestThreadEntryPoint:(id)__unused object{
@autoreleasepool {
[[NSThreadcurrentThread]setName:@"AFNetworking"];
NSRunLoop *runLoop = [NSRunLoopcurrentRunLoop];
[runLoop addPort:[NSMachPortport] forMode:NSDefaultRunLoopMode];
[runLoop run];
}
}
- (NSThread *)networkRequestThread{
static NSThread *_networkRequestThread =nil;
static dispatch_once_t oncePreadicate;
dispatch_once(&oncePreadicate, ^{
_networkRequestThread = [[NSThread alloc]initWithTarget:selfselector:@selector(netWorkRequestThreadEntryPoint:)object:nil];
[_networkRequestThread start];
});
return _networkRequestThread;
}
//2.接到crash的singal后动重启RunLoop
- (void)restartRuningRunLoop{
CFRunLoopRef runloop =CFRunLoopGetCurrent();
NSArray *allModes =CFBridgingRelease(CFRunLoopCopyAllModes(runloop));
while(1){
for(NSString *modein allModes){
CFRunLoopRunInMode((CFStringRef)mode,0.001,false);
}
}
}
//3.TableView 延迟加载图片新思路
#if TARGET_OS_IPHONE
UIImageView *imageView;
- (void)delayLoadingImage{
UIImage *downLoadImage = nil;
[imageView performSelector:@selector(setImage:)
withObject:downLoadImage
afterDelay:0
inModes:@[NSDefaultRunLoopMode]]
}
#elif TARGET_OS_MAC
//...
#endif
- (void)content:(NSString *(^)(NSString * content))block{
}
//4.异步测试
- (void)runUnitlBlock:(BOOL(^)())block timeout:(NSTimeInterval)timeout{
NSDate *timeoutDate = [NSDatedateWithTimeIntervalSinceNow:timeout];
do{
CFTimeInterval quantum = 0.0001;
CFRunLoopRunInMode(kCFRunLoopDefaultMode,quantum,false);
}while ([timeoutDate timeIntervalSinceNow]>0 &&!block()) ;
}
//4.1升级版异步测试
- (BOOL)upgradeRunUnitlBlock:(BOOL(^)())block timeout:(NSTimeInterval)timeout{
__block Boolean fulfilled =NO;
void(^beforeWaiting)(CFRunLoopObserverRef observer,CFRunLoopActivity activity)=
^(CFRunLoopObserverRef observer,CFRunLoopActivity activity){
fulfilled = block();
if (fulfilled) {
CFRunLoopStop(CFRunLoopGetCurrent());
}
};
CFRunLoopObserverRef observer =CFRunLoopObserverCreateWithHandler(NULL,\
kCFRunLoopBeforeWaiting,true, 0, beforeWaiting);
CFRunLoopAddObserver(CFRunLoopGetCurrent(), observer,kCFRunLoopDefaultMode);
//run
CFRunLoopRunInMode(kCFRunLoopDefaultMode, timeout,false);
CFRunLoopRemoveObserver(CFRunLoopGetCurrent(), observer,kCFRunLoopDefaultMode);
CFRelease(observer);
return fulfilled;
}