android - 如何在 Android 中为 LayoutParams x 和 y 设置动画

Question

我是安卓新手。我有以下代码:

// layoutParams of type WindowManager.LayoutParams
layoutParams.x = someX;
layoutParams.y = someY;
windowManager.updateViewLayout(someView, layoutParams);

我如何激活这种变化？翻译之类的东西...

Answer 1

您可以使用ValueAnimator:

int beginValue = 0;
int endValue = 100;

ValueAnimator animator = ValueAnimator.ofInt(beginValue, endValue);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
    @Override
    public void onAnimationUpdate(ValueAnimator animation) {
        WindowManager.LayoutParams layoutParams =
                (WindowManager.LayoutParams) view.getLayoutParams();
        layoutParams.x = (Integer) animation.getAnimatedValue();
        layoutParams.y = (Integer) animation.getAnimatedValue();
        getWindowManager().updateViewLayout(view, params);
    }
});
animator.start();