小编use*_*163的帖子

我正在构建一个应用程序,它在Apple的服务器上托管了非消费类应用内购买.我已经成功地将我的应用内购买下载,但是当我将它们保存到文档目录中时,我似乎无法找到或访问它们.

这是我用来从下载的contentURL下载文件的功能.下载完成后调用它,传入download.contentURL将其在缓存中的位置移动到文档文件夹.

-(void)downloadFromURL: (NSURL *) temporaryURL {
    NSLog(@"The download's contentURL is %@", temporaryURL.absoluteString);
    NSString *folderName = [[temporaryURL path] lastPathComponent];
    NSArray *pathArr = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *folder = [pathArr objectAtIndex:0];

    NSString *filePath = [folder stringByAppendingPathComponent:folderName];
    NSURL *fileURL = [NSURL fileURLWithPath:filePath];

    NSError *writeError = nil;
    NSData *downloadData = [[NSData alloc] initWithContentsOfURL:temporaryURL];
    [downloadData writeToURL: fileURL options:0 error:&writeError];

    if( writeError) {
    NSLog(@"Error in writing file %@' : \n %@ ", filePath , writeError);
    return;
    }
    NSLog(@"File successfully downloaded. Url is %@",fileURL.absoluteString);
    myFileURL = …