滚动时动画不起作用

Question

我正试图在scrollview中为10个观看动画，但问题是。

动画仅在scrollview停止滚动时启动。 我想在滚动scrollview时动画显示。

LayoutInflater inflater = LayoutInflater.from(this);
        final View view = inflater.inflate(R.layout.view_albumview, null);
        ImageView imageView = (ImageView) view.findViewById(R.id.imageView);
        imageView.setBackgroundResource(R.drawable.image_temp01);

        view.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
            @Override
            public void onScrollChanged() {

                                System.out.println(">>>>>" + view.getX());
                                if (detectOverLap(view, mainRect)) {
                                    ObjectAnimator objectanimator1, objectanimator2;

                                    objectanimator1 = ObjectAnimator.ofFloat(view.findViewById(R.id.imageView), "scaleX", 1.0f);
                                    objectanimator2 = ObjectAnimator.ofFloat(view.findViewById(R.id.imageView), "scaleY", 1.0f);
                                    objectanimator1.start();
                                    objectanimator2.start();

                                    System.out.println("ON INNER");
                                }  
                            }
                        });




        return view;

这是在随机位置的滚动视图中添加的视图

由于 阿米特夏尔马

Answer 1

帮助我的解决方案是将ObjectAnimator的动画持续时间设置为零并设置插值器。所以你的代码应该是这样的：

System.out.println(">>>>>" + view.getX());
                            if (detectOverLap(view, mainRect)) {
                                ObjectAnimator objectanimator1, objectanimator2;

                                objectanimator1 = ObjectAnimator.ofFloat(view.findViewById(R.id.imageView), "scaleX", 1.0f);
                                objectanimator2 = ObjectAnimator.ofFloat(view.findViewById(R.id.imageView), "scaleY", 1.0f);
                                objectanimator1.setInterpolator(new FastOutSlowInInterpolator());
                                objectanimator2.setInterpolator(new FastOutSlowInInterpolator());
                                objectanimator1.setDuration(0);
                                objectanimator2.setDuration(0);
                                objectanimator1.start();
                                objectanimator2.start();

                                System.out.println("ON INNER");
                            }