一、使用UIwebview浏览文档
1.将文档路径转换为URL
NSURL *documentPathUrl = [NSURL fileURLWithPath:filePath];
2.获取指定URL的MIMEType类型
- (NSString *)mimeType:(NSURL *)url
{
//1NSURLRequest
NSURLRequest *request = [NSURLRequest requestWithURL:url];
//2NSURLConnection
//3 在NSURLResponse里，服务器告诉浏览器用什么方式打开文件。
//使用同步方法后去MIMEType
NSURLResponse *response = nil;
[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
return response.MIMEType;
}
3.显示文档
// 通过路径读取文档数据
NSData *data = [NSData dataWithContentsOfURL:self.documentPathUrl];
// 将数据传给WebView显示，并且告知文档类型、编码格式 self.url文档请求的URL
[_webView loadData:data MIMEType:[self mimeType:self.documentPathUrl] textEncodingName:@"UTF-8" baseURL:[NSURL URLWithString:self.url]];
二、使用UIDocumentInteractionController
1.声明一个全局变量
@property (nonatomic, strong) UIDocumentInteractionController *documentController;
2.遵循UIDocumentInteractionControllerDelegate代理
- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller
{
return self;
}
- (UIView *)documentInteractionControllerViewForPreview:(UIDocumentInteractionController *)controller
{
return self.view;
}
- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController *)controller
{
return self.view.frame;
}
3.打开的本地文件
_documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:filePath]];
_documentController.delegate = self;// 代理
_documentController.name = _fileName;// 文件名
4.打开预览
直接打开预览界面[图片上传中...(屏幕快照 2018-06-05 下午5.40.22.png-9fa213-1528191656840-0)]
[_documentController presentPreviewAnimated:YES];
有查看的文件分享弹窗
[_documentController presentOptionsMenuFromRect:self.view.bounds inView:self.view animated:YES];
没有查看的文件分享弹窗
[_documentController presentOpenInMenuFromRect:self.view.bounds inView:self.view animated:YES];
