在iPhone中创建一个目录

Question

这有什么问题？

#define AUDIO_NOTES_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/myApp/Pictures"]

NSFileManager *NSFm= [NSFileManager defaultManager]; 
BOOL isDir=YES;

if(![NSFm fileExistsAtPath:FILEPATH isDirectory:&isDir])
    if(![NSFm createDirectoryAtPath:FILEPATH attributes:nil])
        NSLog(@"Error: Create folder failed");

Answer 1

createDirectoryAtPath:attributes: 已弃用,您应该使用:

    NSString *dirToCreate = [NSString stringWithFormat:@"%@/newDirectory",[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]];
    NSError *error = nil;
    BOOL isDir;
    if(![fm fileExistsAtPath:dirToCreate isDirectory:&isDir])
        if(![fm createDirectoryAtPath:dirToCreate withIntermediateDirectories:YES attributes:nil error:&error])
            NSLog(@"Error: Create folder failed");

Answer 2

FILEPATH令牌未定义 - 您#define AUDIO_NOTES_FOLDER在文件的开头,然后FILEPATH在代码中使用.

另请注意,NSHomeDirectory()不一定是建议的查找Documents目录的方式 - 相反,您可能需要:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];