質問1.端末内にcsv形式で保存したログを、PC等に抜き出すにはどうすればいいでしょうか？  
info.plist に Application supports iTunes file sharing を作って値を YES
にはしてみましたが、PCにはログができてる様子がありません。

```

    @interface ViewController ()
    
    @property (nonatomic, nullable) NSTimer *timer;
    
    @end
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
    }
    
    -(void)viewDidAppear:(BOOL)animated
    {
        [super viewDidAppear:animated];
        self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0
                                                      target:self
                                                    selector:@selector(writeLog:)
                                                    userInfo:nil
                                                     repeats:YES];
    }
    
    -(void)viewWillDisappear:(BOOL)animated
    {
        [super viewWillDisappear:animated];
        [self.timer invalidate];
        self.timer = nil;
    }
    
    - (void)didReceiveMemoryWarning {
        [super didReceiveMemoryWarning];
        [self.timer invalidate];
        self.timer = nil;
    }
    
    - (NSInteger)batteryCapacity {
        __block NSInteger capacity = 0;
        [[[UIApplication sharedApplication] valueForKeyPath:@"statusBar.foregroundView.subviews"]
         enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
             if([obj isKindOfClass:[NSClassFromString(@"UIStatusBarBatteryItemView") class]]) {
                 capacity = [[obj valueForKey:@"capacity"] integerValue];
                 *stop = YES;
             }
         }];
    
        return capacity;
    }
    
    -(void) writeLog:(NSTimer *)timer
    {
        @synchronized (self) {
    
            NSString *documentDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true) lastObject];
            NSURL *filePath = [[[NSURL URLWithString:documentDirectory]
                                URLByAppendingPathComponent:@"batteryCapacity"]
                               URLByAppendingPathExtension:@"csv"];
    
            NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
            formatter.calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
            formatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"ja_JP"];
            formatter.timeZone = [NSTimeZone timeZoneWithAbbreviation:@"JST"];
            formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss ZZZ";
    
            NSString *wirteData = [NSString stringWithFormat:@"%@, %zd\r\n", [formatter stringFromDate:[NSDate date]], [self batteryCapacity]];
    
            NSFileManager *fileManager = [NSFileManager defaultManager];
            if(![fileManager fileExistsAtPath:filePath.absoluteString]){
                [fileManager createFileAtPath:filePath.absoluteString contents:nil attributes:nil];
            }
    
            NSError *error = nil;
            NSFileHandle *fileHandle = [NSFileHandle fileHandleForWritingToURL:filePath error:&error];
            if(error){
                // error handling
                NSLog(@"%@", [error localizedDescription]);
                return;
            }
            [fileHandle seekToEndOfFile];
            [fileHandle writeData:[wirteData dataUsingEncoding:NSUTF8StringEncoding]];
            [fileHandle closeFile];
        }
    }
    
    @end
    
```
CC BY-SA 3.0
2016-08-08T13:01:05.917
28131
2016-08-17T13:21:03.323
2016-08-17T13:21:03.323
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7590
question
ios objective-c
端末内にcsv形式で保存したログを、PC等に抜き出すにはどうすればいいでしょうか？