Camera 旋转动画

public class FlipImage extends ImageView implements OnClickListener, Rotate3dAnimation.On90Degree {

    private Drawable f;
    private Drawable b;
    private Bitmap bitmap;

    // private Animation a;

    public FlipImage(Context context, AttributeSet attrs) {
        super(context, attrs);

        f = context.getResources().getDrawable(R.drawable.question_test);
        b = context.getResources().getDrawable(R.drawable.quest_test2);
        setImageDrawable(f);
        bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.quest_test2);
        // a = AnimationUtils.loadAnimation(context, R.anim.rotate_anim);
        setOnClickListener(this);
    }

    int count;

    @Override
    public void onClick(View v) {
        float centerX = getWidth() / 2f;
        float centerY = getHeight() / 2f;
        // 构建3D旋转动画对象,旋转角度为0到90度
        Rotate3dAnimation rotation = new Rotate3dAnimation(0, 180, centerX, centerY, 0, false);
        rotation.setOn90DegreeListener(this);
        // 动画持续时间500毫秒
        rotation.setDuration(1000);
        // 动画完成后保持完成状态
        rotation.setFillAfter(true);
        rotation.setInterpolator(new AccelerateInterpolator());
        // 设置动画的监听器
        if (count == 0) {
            count = 1;
        } else {
            count = 0;
        }
        startAnimation(rotation);
    }


    @Override
    public void on90Dgree() {
        if (count == 0) {
            setImageDrawable(f);
        } else {
            setImageDrawable(b);
        }
    }
}