iOS下载文件保存到手机文件指定目录 |
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下载文件并且保存文件到手机文件指定目录，实现方法如下： @interface ViewController() @end @implementation ViewController @end //下载文件 - (void)downloadFile{ NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration]; NSURL *URL = [NSURL URLWithString:self.url]; //文件下载地址 NSURLRequest *request = [NSURLRequest requestWithURL:URL]; weakify(self); NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:^(NSProgress *downloadProgress){ dispatch_async(dispatch_get_main_queue(), ^{ self.downloadProgress = downloadProgress.fractionCompleted; //下载进度 }); } destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) { weakSelf.fileName = response.suggestedFilename; //文件名 weakSelf.fileSize = [self getFileSize:response.expectedContentLength]; //文件大小 NSURL *documentsDirectoryURL = [[NSFileManager defaultManager]URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil]; NSURL *url = [documentsDirectoryURL URLByAppendingPathComponent:weakSelf.fileName]; //文件位置 return url; } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) { //下载完成 weakSelf.filePathURL = filePath; //文件位置 }]; [downloadTask resume]; } //保存文件到手机文件指定目录 - (void)saveFileToPhone { UIDocumentPickerViewController *documentPicker = [[UIDocumentPickerViewController alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"file://%@",self.filePathURL]] inMode:UIDocumentPickerModeExportToService]; documentPicker.delegate = self; documentPicker.modalPresentationStyle = UIModalPresentationFormSheet; [self presentViewController:documentPicker animated:YES completion:nil]; } #pragma mark - UIDocumentInteractionControllerDelegate -(UIViewController*)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController*)controller{ return self; } -(UIView*)documentInteractionControllerViewForPreview:(UIDocumentInteractionController*)controller { return self.view; } -(CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController*)controller { return self.view.frame; } #pragma mark - UIDocumentPickerDelegate - (void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentsAtURLs:(NSArray *)urls { //保存成功 } - (void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller{ //取消保存 }注： UIDocumentPickerViewController有四种模式： 1 typedef NS_ENUM(NSUInteger, UIDocumentPickerMode) { 2 UIDocumentPickerModeImport, 3 UIDocumentPickerModeOpen, 4 UIDocumentPickerModeExportToService, 5 UIDocumentPickerModeMoveToService 6 } API_DEPRECATED("Use appropriate initializers instead",ios(8.0,14.0)) API_UNAVAILABLE(tvos);UIDocumentPickerModeImport：用户选择一个外部文件，文件选择器拷贝该文件到应用沙盒，不会修改源文件。 UIDocumentPickerModeOpen：打开一个外部文件，用户可以修改该文件。 UIDocumentPickerModeExportToService：文件选择器拷贝文件到一个外部路径，不会修改源文件。 UIDocumentPickerModeMoveToService：拷贝文件到外部路径，同时可以修改该拷贝。 |
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