ios在项目中打开word文档、ppt等总结

最近在项目开发中遇到下载附件文档预览需求，在这里总结一下我的实现方法，本文最后会附带我写的demo下载地址

这里我总结了三种实现方法（1）用webView预览（2）通过UIDocumentInteractionController实现跳转（3）应用Quick Look系统框架，下面依次介绍各个方法实现

首先来看用webView这个比较常用，不做过多解释，代码如下：

_webView = [[UIWebView alloc]initWithFrame:self.view.bounds];
    _webView.delegate = self;
    NSURLRequest *request = [NSURLRequest requestWithURL:_url1];
    [_webView loadRequest:request];
    [_webView setScalesPageToFit:YES];
    [self.view addSubview:_webView];

第二种应用UIDocumentInteractionController实现方法如下：

//先初始化对象，以及设置弹出方式
_documentInt = [UIDocumentInteractionController interactionControllerWithURL:_url2];
    [_documentInt setDelegate:self];
    [_documentInt presentPreviewAnimated:YES];
    [_documentInt presentOptionsMenuFromRect:CGRectMake(0, 0, 375, 667) inView:self.view  animated:YES];
//然后实现相应代理方法
- (UIViewController*)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController*)controller
{
    　return self;
}
- (UIView*)documentInteractionControllerViewForPreview:(UIDocumentInteractionController*)controller
{
    　return self.view;
}
- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController*)controller
{

    　return self.view.frame;
}
//点击预览窗口的“Done”(完成)按钮时调用
- (void)documentInteractionControllerDidEndPreview:(UIDocumentInteractionController*)_controller
{
    [_documentInt dismissPreviewAnimated:YES];
}

第三种Quick Look，用这个方法需要导入QuickLook.FrameWork框架，代码如下：

//初始化对象
QLPreviewController *myQlPreViewController = [[QLPreviewController alloc]init];
    myQlPreViewController.delegate =self;
    myQlPreViewController.dataSource =self;
    [myQlPreViewController setCurrentPreviewItemIndex:0];
    [self presentViewController:myQlPreViewController animated:YES completion:nil];
//实现代理方法
- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController *)controller
{
    return 1;
}
- (id)previewController:(QLPreviewController *)controller previewItemAtIndex:(NSInteger)index
{
    //    NSString *fileName = [self.listDic objectForKey:@"fileName"];
    //    NSString* path = [NSHomeDirectory()stringByAppendingPathComponent:[NSStringstringWithFormat:@"Documents/%@",fileName]];

    return _url3;

}

demo下载地址：https://github.com/zk1947/ZKDemoALL