ios - C4 キャプチャ カメラ画像の例

Question

ねえ、

C4 を始めたばかりで、これまでの経験は素晴らしいものでした。現時点では、カメラの例で写真を撮ることを複製していますが、何らかの理由で、チュートリアル ( http://www.c4ios.com/tutorials/takingSnapshots ) で説明されているようにすべてを実行すると、次の間違いが発生します。 「'TakePhoto' の目に見える @interface は、セレクター 'listenFor:from Object:' を宣言しません」(Take Photo は、私が作業しているファイルです) クラス定義で「imageWasCaptured」を宣言する必要があると思いますが、宣言しません。何として知っていますか？助言がありますか？

更新: ここにコードがあります https://github.com/susemiessner/Urban-Alphabets/tree/master/urbanAlphabets または単純にコピーされた TakePhoto.h

#import "C4CanvasController.h"

@interface TakePhoto : C4CanvasController

@end

TakePhoto.m

    #import "TakePhoto.h"
    #define NavBarHeight 42
    #define TopBarFromTop 20

    @interface TakePhoto ()

    @end

    @implementation TakePhoto {
        //common variables
        UIColor *navBarColor;
        UIColor *buttonColor;
        UIColor *typeColor;

        //top toolbar
        C4Shape *topNavBar;
        C4Font *fatFont;
        C4Label *takePhoto;



        //camera
        C4Camera *cam;

        //bottom Toolbar
        C4Shape *bottomNavBar;
        C4Button *takePhotoButton;
    }
    -(void) setup{
        navBarColor=[UIColor colorWithRed:0.96875 green:0.96875 blue:0.96875 alpha:1];
        buttonColor= [UIColor colorWithRed:0.8984275 green:0.8984275 blue:0.8984275 alpha:1];
        typeColor=[UIColor colorWithRed:0.19921875 green:0.19921875 blue:0.19921875 alpha:1];

        [self topBarSetup];
        [self bottomBarSetup];
        [self cameraSetup];

    }
    -(void)topBarSetup{
        topNavBar=[C4Shape rect:CGRectMake(0, TopBarFromTop, self.canvas.width, NavBarHeight)];
        topNavBar.fillColor=navBarColor;
        topNavBar.lineWidth=0;
        [self.canvas addShape:topNavBar];


        fatFont=[C4Font fontWithName:@"HelveticaNeue-Bold" size:17];
        takePhoto = [C4Label labelWithText:@"Take Photo" font:fatFont];
        takePhoto.center=topNavBar.center;
        [self.canvas addLabel:takePhoto];}

    -(void)cameraSetup{
        cam = [C4Camera cameraWithFrame:CGRectMake(0,TopBarFromTop+NavBarHeight, self.canvas.width, self.canvas.height-(2*NavBarHeight+TopBarFromTop))];
        [self.canvas addCamera:cam];
        [cam initCapture];
        //tapping to take image
        [self addGesture:TAP name:@"capture" action:@"capturedImage"];
        [self numberOfTouchesRequired:1 forGesture:@"capture"];
//the following line is where I get the error
        [self listenFor:@"imageWasCaptured" fromObject:@"putCapturedImageOnCanvas"];
    }
    -(void) bottomBarSetup{
        bottomNavBar=[C4Shape rect:CGRectMake(0, self.canvas.height-(NavBarHeight), self.canvas.width, NavBarHeight)];
        bottomNavBar.fillColor= navBarColor;
        bottomNavBar.lineWidth=0;
        [self.canvas addShape:bottomNavBar];

        takePhotoButton=[UIButton buttonWithType: ROUNDEDRECT];
        [takePhotoButton setTitle:@"TakePhoto" forState:UIControlStateNormal];
        takePhotoButton.frame=CGRectMake(self.canvas.width/2-50, self.canvas.height-(NavBarHeight), 100, NavBarHeight);
        takePhotoButton.backgroundColor=buttonColor;
        takePhotoButton.tintColor=typeColor;
        [self.canvas addSubview:takePhotoButton];

    }

    -(void) takingPhoto{
        [cam captureImage];
    }
    -(void) captureImage{
        [cam captureImage];
    }
    -(void)putCapturedImageOnCanvas{
        C4Image *img = cam.capturedImage;
        img.width=240;
        img.center=CGPointMake(self.canvas.width*2/3, self.canvas.center.y);

    }


    @end