我想在尝试场景的android中实现以下动画,但根据确认的文档,场景无法与文本配合使用:
“如果尝试使用动画来调整TextView的大小,则在对象完全调整大小之前,文本会弹出到新位置。为避免此问题,请不要为调整包含文本的视图的大小设置动画。”
请任何解决方案,放大的布局文本也可以包含图像。 animation video
答案 0 :(得分:0)
这东西是如何工作的,但是动画有点抖动,我想首先要达到布局高度的最终值,然后再达到layoutWidth,必须解决这个问题。这是我的放大/缩小动画:
public class EnlargeAnimation extends Animation {
private final int diffHeight;
private final int diffWidth;
private final int initialHeight;
private final int initialWidth;
private final View targetView;
public EnlargeAnimation(View targetView, float targetHeight, float targetWidth) {
this.targetView = targetView;
this.initialHeight = targetView.getMeasuredHeight();
this.initialWidth = targetView.getMeasuredWidth();
this.diffHeight = (int) (targetHeight-initialHeight);
this.diffWidth = (int) (targetWidth-initialWidth);
}
@Override
public boolean willChangeBounds() {
return true;
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
float newHeight = initialHeight + diffHeight * interpolatedTime;
float newWidth = initialWidth + diffWidth * interpolatedTime;
targetView.getLayoutParams().height = (int) newHeight;
targetView.getLayoutParams().width = (int) newWidth;
targetView.requestLayout();
}
}
这是所谓的放大动画:
我正在使用viewpager,因此我必须使padding为负数以扩大卡的大小:
ValueAnimator paddingAnimator = ValueAnimator.ofInt(20, -10).setDuration(400);
paddingAnimator.setInterpolator(new LinearInterpolator());
paddingAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
int padding = (int) animation.getAnimatedValue();
view.setPadding(padding,
(int) DeviceUtils.convertDpToPx(50, v.getContext()), padding,
(int) DeviceUtils.convertDpToPx(50, v.getContext()));
view.requestLayout();
}
});
viewPagerItemSizeListener.onEnlarged();
EnlargeAnimation
enlargeAnimation =
new EnlargeAnimation(cardView, screenHeight, screenWidth);
enlargeAnimation.setDuration(400);
enlargeAnimation.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
paddingAnimator.start();
seeExampleText.setVisibility(View.INVISIBLE);
}
@Override
public void onAnimationEnd(Animation animation) {
stage.setVisibility(View.GONE);
cardEnlargedWidth = cardView.getLayoutParams().width;
cardEnlargedHeight = cardView.getLayoutParams().height;
crossContianer.setVisibility(View.VISIBLE);
detailTextContianer.setVisibility(View.VISIBLE);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
view.startAnimation(enlargeAnimation);
我猜没有人在读它,但是如果对变量有些困惑,请告诉我我将编辑答案。