NSString *homePath = NSHomeDirectory();    NSString *systemLogPath = [homePath stringByAppendingPathComponent:@"Documents/DearMob/SystemLog"];    NSLog(@"%@",systemLogPath);    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);    NSString *documentsPath = [paths objectAtIndex:0];        NSFileManager *fileManager = [NSFileManager defaultManager];    NSString *testDirectory = [documentsPath stringByAppendingPathComponent:@"DearMob/SystemLog"];    NSLog(@"%@",testDirectory);    // 创建目录    BOOL res=[fileManager createDirectoryAtPath:systemLogPath withIntermediateDirectories:YES attributes:nil error:nil];