我想要在文件夹“tracks”中的documentsDirectory中下载一个文件。但是如果我使用这个代码(在文档目录中下载文件)。所有做工精细如何从文件夹下载文件?
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"Chapter.mp3"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:false];
NSString *stringURL = @"link";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
如果我(在文件夹“轨道”文件下载在documentsDirectory)使用此代码文件没有下载
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"tracks/Chapter.mp3"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:false];
NSString *stringURL = @"link";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
如何在文件夹中下载文件documentsDirectory“轨道” ?
尝试添加;如果(![fileManager fileExistsAtPath:filePath isDirectory:&isDir]) 如果(![fileManager createDirectoryAtPath:filePath withIntermediateDirectories:YES attributes:nil error:NULL]) NSLog(@“Error:Create folder failed%@”,directory); –