当我调用UIDocumentInteractionController方法“presentOpenInMenuFromRect：inView：animated：”时，iPad应用程序崩溃了。 [英] iPad application crashes when I call UIDocumentInteractionController method "presentOpenInMenuFromRect: inView: animated:"

问题描述

这是我的代码：在iPad中它崩溃了，列表出现但所选应用程序没有打开。

Here is my code: In iPad it is crashing in iPhone the list is appearing but the selected application is not getting open.

- (void)openIn:(NSURL *)fileFullPath {
    docController = [UIDocumentInteractionController interactionControllerWithURL:fileFullPath];
    [docController setDelegate:self];

    BOOL isOpen = [docController presentPreviewAnimated:YES];

    if (isOpen == NO) {
        BOOL isOpenIn = [docController presentOpenInMenuFromRect:CGRectMake(300, 300, 100, 100) inView:self.view animated:NO];

        if(isOpenIn == NO) {
            return ;
        }
    }
}

推荐答案

根据Lupos的回答，为我的docController定义一个实例变量修复了你所看到的相同问题。

As per Lupos' answer, defining an instance variable for my docController fixed the same issue that you were seeing.

我没有足够的声誉来评论关于他的回答。

I don't have enough reputation to comment on his answer.

// In your .h file
@property (nonatomic, strong) UIDocumentInteractionController *docController;

// When calling in your .m
docController = [UIDocumentInteractionController interactionControllerWithURL:fileFullPath];

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