canvas에 그림그리는데 에러가 납니다.

Question

안녕하세요 canvas를 캡쳐해서 갤러리를 넣는걸 하고있는데요.

아래와 같은 에러가 나타나는데 메인 ui스레드말고 무슨 핸들럴를 이용하라고 하는데.. canvas안에서 핸들러를 이용해야하나요

java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

public void SaveView(){

        CanvasViewAcitivty view = new CanvasViewAcitivty(this,model);

        Bitmap b = Bitmap.createBitmap(1080,1080,Bitmap.Config.ARGB_8888);

        Canvas c= new Canvas(b);

        view.draw(c);

        FileOutputStream fos = null;

        path3 = Environment.getExternalStorageDirectory().toString() + "/Fancyface/" + System.currentTimeMillis() + "g.png";

        File file= new File(path3);

        try{

            fos = new FileOutputStream(path3);

            b.compress(Bitmap.CompressFormat.PNG,100,fos);

            fos.close();

            setWallpaper(b);

        }catch (Exception e){

 

        }

        sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file)));

    }

 

클래스

public CanvasViewAcitivty(Context context,CharacterModel model){

        super(context);

        mContext=context;

        mModel = model;

        res  = new Resources();

        ujnibitmap = new JniBitmap();

//

        mBgColor = getResources().getIntArray(R.array.bg_color);

        mFaceColor = getResources().getIntArray(R.array.face_color);

        mHairColor = getResources().getIntArray(R.array.hair_color);

        mCheekColor = getResources().getIntArray(R.array.cheek_color);

//

        bitmap1 = paintBitmap(res.face[mModel.face_index],mFaceColor[mModel.face_color_index]);//

        bitmap2 = loadBitmap(res.body[mModel.body_index]);//

        bitmap3 = paintBitmap(res.hair[mModel.hair_index],mFaceColor[mModel.heir_color_index]);//

        bitmap4 = loadBitmap(res.eye[mModel.eye_index]);/

        bitmap5 = loadBitmap(res.eyebrow[mModel.eyebrow_index]);/

        bitmap6 = loadBitmap(res.accessory[mModel.accessory_index]);//

        bitmap7 =  colorChange(res.cheek[0]);//

        bitmap8 =  loadBitmap(res.mouth[mModel.mouth_index]);/

        bitmap9 =  loadBitmap(res.glasses[mModel.glasses_index]);//

        bitmap10 = loadBitmap(res.balloon[mModel.balloom_index]);//

 

    }

 

    @Override

    protected void onDraw(Canvas canvas) {

        super.onDraw(canvas);

        Paint pnt = new Paint();

        if(mModel.bg_color_index!=0){

            canvas.drawColor(mBgColor[mModel.bg_color_index]);

        }

 

        canvas.drawBitmap(bitmap2,0,0,pnt);//

        canvas.drawBitmap(bitmap3,0,0,pnt);//

        canvas.drawBitmap(bitmap1,0,0,pnt);//

        canvas.drawBitmap(bitmap6,0,0,pnt);//

        canvas.drawBitmap(bitmap7,0,0,pnt);//

        canvas.drawBitmap(bitmap9,0,0,pnt);//

        canvas.drawBitmap(bitmap5,0,0,pnt);//

        canvas.drawBitmap(bitmap4,0,0,pnt);//

        canvas.drawBitmap(bitmap8,0,0,pnt);//

        canvas.drawBitmap(bitmap10,0,0,pnt);//

 

    }