「iPhone勉強会 at 京都」2008年12月13日の発表資料です。

1. UIImagePickerController よもやま話 http://www.spookies.co.jp 草苅 景 [email_address]

2. はじめに

4. 実際の ソースコード

5. @interface CameraViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate> { UIImagePickerController* cameraController; } @property (nonatomic, assign) UIImagePickerController* cameraController; @end

6. #define SOURCETYPE UIImagePickerControllerSourceTypeCamera （省略） if(![UIImagePickerController isSourceTypeAvailable:SOURCETYPE]){ return; } cameraController = [[[UIImagePickerController alloc] init] retain]; cameraController.sourceType = SOURCETYPE; cameraController.delegate = self; cameraController.allowsImageEditing = NO; [self.view.superview addSubview:cameraController.view]; //[self presentModalViewController:cameraController animated:YES];

7. UIImagePickerControllerSourceType

9. Photo Library Saved Photo Album

10. Camera

11. UIImagePickerControllerDelegate

12. -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo; { [picker release]; // 写真選択時の処理 } - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { [picker release]; // キャンセル時の処理 }

13. UIImagePickerController に茶茶を入れる

14. allowsImageEditing =NO

16. ToyCamera っぽい カメラインターフェース を実現

17. ここを消したい

18. for (UIView* view in currentView.subviews) { NSLog(@&quot;view is a %@&quot;, [view description]); } ひたすら掘ります

19. その結果

20. - (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated { UIView* cameraView = [viewController.view.subviews objectAtIndex:0]; UIView* cropOverlay = [cameraView.subviews objectAtIndex:3]; UIView* imgView = [cropOverlay.subviews objectAtIndex:0]; UIView* lcdLayer = [cropOverlay.subviews objectAtIndex:1]; [imgView setHidden: YES]; [lcdLayer setHidden: YES]; }

21. allowsImageEditing = YES

22. こんな感じで 表示したい

24. 最終的に行き着いたやり方

25. View の時間監視

26. （省略） [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(checkView) userInfo:nil repeats:YES]; touchView = [[MyTouchView alloc] init]; touchView.frame = CGRectMake(0, 0, 320, 480); touchView.backgroundColor = [UIColor blueColor]; touchView.opaque = YES; touchView.alpha = 0.5; touchView.cameraviewcontroller = self; [self.view.superview addSubview:touchView]; [self.view.superview sendSubviewToBack:touchView]; }

27. - (void)checkView { UIView* temp; [touchView.superview sendSubviewToBack:touchView]; if ((temp = [self getViewFromArray:self.view.superview.subviews num:2]) != nil) { if((temp = [self getViewFromArray:temp.subviews num:0]) != nil) { if((temp = [self getViewFromArray:temp.subviews num:1]) != nil) { if(([[temp description] length] > 15) && ([[[temp description] substringToIndex:15] isEqualToString:@&quot;<PLCropOverlay:&quot;])) { [touchView.superview bringSubviewToFront:touchView]; } } } } }

28. - (UIView *)getViewFromArray:(NSArray*)viewArray num:(int)i { if([viewArray count] <= i) return nil; return [viewArray objectAtIndex:i]; }

29. 最後に

30. 非公開 API を使えばもう少しいろいろできるみたいです。 興味がある方はそちらも調べてみて下さい。

31. ご静聴ありがとうございました！