UIDocumentInteractionController对文件预览或分享

UIDocumentInteractionController本地查看文件

• 实例化一个UIDocumentInteractionController对象并遵守其delegate

@interface FileReviewController () 

@property (nonatomic, strong) UIDocumentInteractionController *DIController;

@end

NSURL *urlPath = [[NSBundle mainBundle] URLForResource:@"Jobs" withExtension:@"pdf" subdirectory:@"PDF.bundle"];
self.DIController = [UIDocumentInteractionController interactionControllerWithURL:urlPath];
self.DIController.delegate = self;

• 实现delegate

#pragma mark - UIDocumentInteractionControllerDelegate
- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller {
    return self;
}

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

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

• 读取本地文件

[self.DIController presentPreviewAnimated:YES];

UIDocumentInteractionController第三方分享

[self.DIController presentOptionsMenuFromRect:self.view.bounds inView:self.view animated:YES];

显示菜单的方法：

- presentOptionsMenuFromRect:inView:animated: - presentOptionsMenuFromBarButtonItem:animated: - presentOpenInMenuFromRect:inView:animated: - presentOpenInMenuFromBarButtonItem:animated: