两种方式预览和打开文件

方式一：UIDocumentInteractionController

1、预览文件

self.documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:strUrl]];
[self.documentController setDelegate:self];
self.documentController.UTI = @"com.microsoft.word.doc";
[self.documentController presentPreviewAnimated:YES];```

####2、打开文件

self.documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:strUrl]];
self.documentController.delegate = self;
// self.documentController.UTI = @"com.adobe.pdf";
self.documentController.UTI = @"com.microsoft.word.doc";
BOOL canOpen = [self.documentController presentOpenInMenuFromRect:self.view.bounds inView:self.view animated:YES];
if (!canOpen) {
[LVAlert lvAlertWithTitle:@"没有程序可以打开要分享的文件" Message:nil Default:@"确定"];
}```

3、需要的代理方法

#pragma mark - UIDocumentInteractionControllerDelegate

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

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

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

- (void)documentInteractionControllerWillBeginPreview:(UIDocumentInteractionController *)controller{
    NSLog(@"开始预览");
}

- (void)documentInteractionControllerDidEndPreview:(UIDocumentInteractionController *)controller{
    NSLog(@"结束预览");
}

方式一：QLPreviewController

1、预览文件

#import "QLPreviewController+BlocksKit.h"//头文件
<QLPreviewControllerDataSource, QLPreviewControllerDelegate>代理
#pragma mark -- PreviewDelegate

- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController *)controller
{
    return 1;
}


- (id<QLPreviewItem>)previewController:(QLPreviewController *)controller previewItemAtIndex:(NSInteger)index

{
    NSString *strUrl = [[DBManager sharedManager] selectContractModelWithType:@1 andID:self.orderModel.ItemID];
    return [NSURL fileURLWithPath:strUrl];
}

//创建QLPreviewController
QLPreviewController *myQlPreViewController = [[QLPreviewController alloc]init];
myQlPreViewController.delegate =self;
myQlPreViewController.dataSource =self;
[myQlPreViewController setCurrentPreviewItemIndex:0];
[self presentViewController:myQlPreViewController animated:YES completion:nil];