如何为选定的 pdf 查看器打开 pdf 到 iphone？

Question

如果您在邮箱中获得 pdf 文件，长按 pdf 文件，那么您将获得弹出框，其中包含您已安装的 pdf 阅读器应用程序的列表。那么如何添加我们的应用来打开pdf文件呢？

Answer 1

用UIDocumentInteractionController

- (void)onOpenWith:(UIButton *)theButton path:(NSString *)path
{   
    NSURL *URL = [NSURL fileURLWithPath:path];

    if (URL) {
        self.documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:URL];

        self.documentInteractionController.delegate = self;
        [self.documentInteractionController presentOptionsMenuFromRect:CGRectZero
                                              inView:theButton
                                            animated:YES];
    }
}


#pragma mark - UIDocumentInteractionControllerDelegate

- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller
{
    return self;
}

- (UIView *)documentInteractionControllerViewForPreview:(UIDocumentInteractionController *)controller
{
    return self.view;
}

- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController *)controller
{
    return self.view.frame;
}