下载文件 ,调用系统的方法(UIDocumentInteractionController) 查看

1.首先我们如果要做这个效果就要知道这个(UIDocumentInteractionController)

     _docController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0] stringByAppendingPathComponent:@"123.xls"]]];
                    _docController.delegate = self;
                    [_docController presentOpenInMenuFromRect:CGRectMake(760, 20, 100, 100) inView:self.view animated:YES];

2.重中之重我们要把他的代理写上,要不然会把你崩的细碎的,哈哈

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

3.如果完成了这2步基本了然了,但是还有记得自己去把代里协议 写上啊

算了还是我也给你写了吧。。。

<UIDocumentInteractionControllerDelegate>
@property(nonatomic,retain)UIDocumentInteractionController *docController;

4.完成了黄金三步 还不成功。

posted @ 2015-11-19 10:33  信仰NSLog  阅读(830)  评论(3编辑  收藏  举报