无法展示图片，显示纯黑背景

[chenhaigang888]

Description

使用pod倒入后，按照demo中的方式添加了以下代码。但是图片展示不出来。显示的纯黑背景。左上角显示了1/9; 右上角显示了保存按钮。点击保存按钮提示“无法保存”

` NSMutableArray *array = [NSMutableArray array];

[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/869136a501b94b009161b43afb02fa9c-0.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/2ed0c384548049ecb876a6544e7345b5-1.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/bf9f03e365c0405393d94cc896ca4f09-2.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/83d57206aa9c4d018887e5b91b0809ac-3.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/12ee686f5f324631afbda0d702254b97-4.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/b5a2111be3424fef87d701af003d6e7c-5.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/89284ad01b684bc78257edfd8eadf2dc-6.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/97d3402747c148f7a2c3fea37e4ced2e-7.jpg"];
[array addObject:@"https://cdn1.dnaerapp.com/2020/04/09/15/d1a99e096a6b40e680da0ad72a5a360c-8.jpg"];

DN_WEAK_SELF
[array enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
    DN_STRONG_SELF
    YBIBImageData * imageData = [YBIBImageData new];
    imageData.imageURL = [NSURL URLWithString:obj];
    [picsTemp addObject:imageData];
}];

YBImageBrowser *browser = [YBImageBrowser new];
browser.dataSourceArray = picsTemp;
browser.currentPage = 0;
// 只有一个保存操作的时候，可以直接右上角显示保存按钮
browser.defaultToolViewHandler.topView.operationType = YBIBTopViewOperationTypeSave;
[browser show];`

Environment

• YBImageBrowser version:3.0.9
• iOS version:13.3.1 xcode version：11.4 (11E146)

[Liyongcong]

https://www.jianshu.com/p/01402b8b6497