Android 如何在ViewPager中使用与ImageView不同的动画

我希望在ViewPager中的ImageView上进行缩放转换动画。只有ImageView应该具有ZoomOut动画，而ViewPager的其他元素应该具有默认动画。

在您的活动中。 主代码位于ZoomOutPageTransformer查看

transformPage（）

方法。（如果它回答了您的问号作为答案。谢谢）

}

这是你的ZoomoutPage课程

public class ZoomOutPageTransformer implements ViewPager.PageTransformer {
private static final float MIN_SCALE = 0.85f;
private static final float MIN_ALPHA = 0.5f;

public void transformPage(View CurentView, float position) {
    ImageView view = (ImageView)CurrentView.findViewById(// the id of the image view you would like)
    int pageWidth = view.getWidth();
    int pageHeight = view.getHeight();

    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0);

    } else if (position <= 1) { // [-1,1]
        // Modify the default slide transition to shrink the page as well
        float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
        float vertMargin = pageHeight * (1 - scaleFactor) / 2;
        float horzMargin = pageWidth * (1 - scaleFactor) / 2;
        if (position < 0) {
            view.setTranslationX(horzMargin - vertMargin / 2);
        } else {
            view.setTranslationX(-horzMargin + vertMargin / 2);
        }

        // Scale the page down (between MIN_SCALE and 1)
        view.setScaleX(scaleFactor);
        view.setScaleY(scaleFactor);

        // Fade the page relative to its size.
        view.setAlpha(MIN_ALPHA +
                (scaleFactor - MIN_SCALE) /
                (1 - MIN_SCALE) * (1 - MIN_ALPHA));

    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0);
    }
}

公共类ZoomoutPagetTransformer实现ViewPager.PageTransformer{
专用静态最终浮动最小刻度=0.85f；
专用静态最终浮动最小值α=0.5f；
公共页面（查看当前视图、浮动位置）{
ImageView=（ImageView）CurrentView.findViewById（//您想要的图像视图的id）
int pageWidth=view.getWidth（）；
int pageHeight=view.getHeight（）；
if（位置<-1）{/[-无穷大，-1）
//这个页面在屏幕的左边。
视图。setAlpha（0）；
}否则，如果（位置）我想到了你提供给我的视差演示，我已经尝试过了，但没有得到预期的结果。@Declannadozie删除你的代码lemme modify，让我们看看你想要的和上面的链接完全一样吗？是的，我想要的是链接中显示的确切功能。@Declannadozie
public class ZoomOutPageTransformer implements ViewPager.PageTransformer {
private static final float MIN_SCALE = 0.85f;
private static final float MIN_ALPHA = 0.5f;

public void transformPage(View CurentView, float position) {
    ImageView view = (ImageView)CurrentView.findViewById(// the id of the image view you would like)
    int pageWidth = view.getWidth();
    int pageHeight = view.getHeight();

    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0);

    } else if (position <= 1) { // [-1,1]
        // Modify the default slide transition to shrink the page as well
        float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
        float vertMargin = pageHeight * (1 - scaleFactor) / 2;
        float horzMargin = pageWidth * (1 - scaleFactor) / 2;
        if (position < 0) {
            view.setTranslationX(horzMargin - vertMargin / 2);
        } else {
            view.setTranslationX(-horzMargin + vertMargin / 2);
        }

        // Scale the page down (between MIN_SCALE and 1)
        view.setScaleX(scaleFactor);
        view.setScaleY(scaleFactor);

        // Fade the page relative to its size.
        view.setAlpha(MIN_ALPHA +
                (scaleFactor - MIN_SCALE) /
                (1 - MIN_SCALE) * (1 - MIN_ALPHA));

    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0);
    }
}