- (void)createNSThread444{UIImage *image = [UIImage imageNamed:@"图片名字"];/**1performSelectorOnMainThread :在主线程操作参数1:(nonnull SEL)方法名字参数2:(nullable id) self 执行这个方法的对象参数3:(BOOL)方法名字 ,YES 代表执行到这一行 一定要执行完任务才会执行下面的数据,NO 代表不管当前任务是否执行完,都会执行下面的代码*/[NSThread performSelectorOnMainThread:@selector(createNSThread111) withObject:image waitUntilDone:NO];/**2performSelectorOnMainThread 是 NSObject的拓展,所以只要是继承自NSObject的对象都可以使用这个方法setImage: 是imageView自带的方法,*/[self.iv performSelectorOnMainThread:@selector(setImage:) withObject:image waitUntilDone:NO];/**3onThread 指定在那个线程*/[self performSelector:@selector(createNSThread111) onThread:[NSThread mainThread] withObject:image waitUntilDone:NO];NSLog(@"执行111");NSLog(@"执行222");NSLog(@"执行333");NSLog(@"执行444");
}-(void)showImage:(UIImage *)image{self.iv.image = image;
}