iOS笔记-预览和分享文件到其他应用

我们这里说的是利用UIDocumentInteractionController进行文件的预览和分享

注：file_urlshi是文件的存储路径，因为应用沙盒路径会变，所以建议获取的时候不要使用绝对路径

-(void)openFileViewController: (NSString *) file_url  {

NSURL *file_URL = [NSURL fileURLWithPath:file_url];

if (file_URL != nil) {

if (_documentController == nil) {

_documentController = [[UIDocumentInteractionController alloc] init];

_documentController = [UIDocumentInteractionController interactionControllerWithURL:file_URL];

_documentController.delegate = self;

}else {

_documentController.URL = file_URL;

}

[_documentController presentPreviewAnimated:YES];

}

}

实现UIDocumentInteractionController的三个代理方法

- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)interactionController

{

return self;

}

-(UIView *)documentInteractionControllerViewForPreview:(UIDocumentInteractionController *)controller{

NSLog(@"documentInteractionControllerDidEndPreview");

return self.view;

}

- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController*)controller

{

NSLog(@"documentInteractionControllerDidDismissOpenInMenu");

return self.view.frame;

}

2，也可以用下面的方法直接调出应用分享不预览

NSString *filePath =xxxxxxxx；

self.documentController =

[UIDocumentInteractionController

interactionControllerWithURL:[NSURL fileURLWithPath:filePath]];

self.documentController.delegate = self;

self.documentController.UTI = @"com.adobe.pdf";

[self.documentController presentOpenInMenuFromRect:CGRectZero

inView:self.view

animated:YES];