创建在iPhone

Question

目录有什么不好呢？

#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

文件路径标记未定义 - 您#define AUDIO_NOTES_FOLDER在你的文件的开头，然后用FILEPATH中，而不是你的代码。

还要注意的是NSHomeDirectory（）不一定是再找到文档目录的推荐的方法 - 而不是你可能想：

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

Answer 2

createDirectoryAtPath:attributes:已被弃用，而应该使用：

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");