and6

    public void finishZoomOutAnimation() {
        if (at != null) {
            if (at.isAlive()) {
                dragZoomOutAnimation = true;
                at.setEndScale(INIT_REDUCE_FINAL_VALUE);
                at.setSleepTime(FINISH_ZOOM_OUT_SLEEP_TIME);    
                at.setAnimationState(AnimationThread.STATE_ZOOM_OUT);      
                setAnimationListener();
            } else {
                dragZoomOutAnimation = true;            
                at = new AnimationThread(this, getScaleValue(matrix), INIT_REDUCE_FINAL_VALUE, SCALE_INCREMENT_VALUE,
                        FINISH_ZOOM_OUT_SLEEP_TIME);  
                needScaleCenterImg = true;
                setAnimationListener();
                at.start();
            }
        }
    }
   
    private void setAnimationListener() {
        at.setOnListener(new AnimationThread.AnimationListener() {
            public void onStart() {
            }
         
            public void onEnd() {
                needScaleCenterImg = false;
                if (at != null) {
                    at.setCurrentScale(BLOWUP_FINAL_VALUE);
                }
            }

            public void onError() {
            }
        });
    }

    private float getScaleValue(Matrix matrix) {
        float[] a = new float[9];
        matrix.getValues(a);
        return a[0];
    }

    private void drawCenterImg(Canvas canvas, boolean flag) {
        LengthCalculate calculate = LengthCalculate.getInstance();
        Drawable centerDrag = getResources().getDrawable(R.drawable.center_drag);
        Rect rect = new Rect(0, 0, getWidth(), getHeight() - calculate.getGroupHeight());
        if (flag) {
            matrix.setScale(at.getCurrentScale(), at.getCurrentScale(), calculate.getCenterPointX(this),
                    calculate.getCenterPointY(this));
        }
        canvas.concat(matrix);
        centerDrag.setBounds(rect);
        centerDrag.draw(canvas);
    }

    private void startAnimation(float start, float end, float increment, long sleepTime) {
        if (at != null) {
            at.stopAnimation();
        }

        at = new AnimationThread(this, start, end, increment, sleepTime);
        needScaleCenterImg = true;
        at.start();
    }