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我有以下For循环通过一个NSMutableArray该迭代并调用setImage方法:更新图像载入在For循环与GCD螺纹 - 的iOS
//Code to iterate through pictures and create ImageView class for each one.
for (int i =0; i<=[pictureThumbnailArray count]-1; i++) {
NSLog(@"Thumbnail count is %d", [pictureThumbnailArray count]);
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^(void) {
[self setImage:[pictureThumbnailArray objectAtIndex:i]:i];
});
}
的setImage方法设置在图片上的各种参数,然后最终将其添加到主线程的子视图上:
dispatch_sync(dispatch_get_main_queue(), ^(void) {
[self.view addSubview:onePicture];
});
问题是图像随机出现在屏幕上,而不是逐个加载。任何建议可以提高我的能力吗?
谢谢。