我有一个线性布局,我想显示或隐藏与动画,推动布局向上或向下每当我改变其可见性。
我在那里看过一些样品,但没有一个适合我的需要。
我已经为动画创建了两个xml文件,但我不知道当我改变线性布局的可见性时如何启动它们。
我有一个线性布局,我想显示或隐藏与动画,推动布局向上或向下每当我改变其可见性。
我在那里看过一些样品,但没有一个适合我的需要。
我已经为动画创建了两个xml文件,但我不知道当我改变线性布局的可见性时如何启动它们。
当前回答
if (filter_section.getVisibility() == View.GONE) {
filter_section.animate()
.translationY(filter_section.getHeight()).alpha(1.0f)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
super.onAnimationStart(animation);
filter_section.setVisibility(View.VISIBLE);
filter_section.setAlpha(0.0f);
}
});
} else {
filter_section.animate()
.translationY(0).alpha(0.0f)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
filter_section.setVisibility(View.GONE);
}
});
}
其他回答
随着Android 3.0 (Honeycomb)引入的新动画API,创建这样的动画非常简单。
将视图向下滑动一段距离:
view.animate().translationY(distance);
你可以稍后将视图滑回原来的位置,如下所示:
view.animate().translationY(0);
您还可以轻松地组合多个动画。下面的动画会将一个视图按高度向下滑动,同时淡入:
// Prepare the View for the animation
view.setVisibility(View.VISIBLE);
view.setAlpha(0.0f);
// Start the animation
view.animate()
.translationY(view.getHeight())
.alpha(1.0f)
.setListener(null);
然后,您可以将视图淡出,并将其滑回原始位置。我们还设置了一个AnimatorListener,这样我们可以在动画完成后将视图的可见性设置为GONE:
view.animate()
.translationY(0)
.alpha(0.0f)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
view.setVisibility(View.GONE);
}
});
你可以使用简单的三行代码来显示动画…
//getting the hiding view by animation
mbinding.butn.setOnClickListener {
val SlideOutLeft = AnimationUtils.loadAnimation(this, R.anim.slide_out_left)
simplelayout.visibility = View.INVISIBLE
simplelayout.startAnimation(SlideOutLeft)
val SlideInRight = AnimationUtils.loadAnimation(applicationContext, R.anim.slide_in_right)
animation1.visibility = View.VISIBLE
animation1.startAnimation(SlideInRight)
}
//again unhide the view animation
mbinding.buttn.setOnClickListener {
val SlideInLeft=AnimationUtils.loadAnimation(this,R.anim.slide_in_left)
//set the layout
simplelayout.visibility=View.VISIBLE
simplelayout.startAnimation(SlideInLeft)
val SlideOutRight=AnimationUtils.loadAnimation(this,R.anim.slide_out_right)
animation1.visibility=View.INVISIBLE
animation1.startAnimation(SlideOutRight)
}
一个完整的答案,在onClick中切换视图可见性,也翻转箭头,并在隐藏组件时平滑地向上移动其他视图。
private fun toggleRecyclerViewVisibility(
recyclerView: RecyclerView,
container: FrameLayout,
arrow: ImageView
) {
//toggle arrow direction, also block user clicks until animation finishes.
arrow
.animate()
.rotation(
if (arrow.rotation == 0F)
180F
else 0F
)
.withStartAction { container.isClickable = false }
.withEndAction { container.isClickable = true }
.start()
//toggle recyclerview visibility with animation.
with(recyclerView) {
var cof = -1
var vis = View.GONE
var alph = 0F
if (visibility == View.GONE) {
cof = 0
vis = View.VISIBLE
alph = 1F
}
animate()
.translationY(height.toFloat() * cof)
.alpha(alph)
.withStartAction {//in case showing the recyclerview show it at the beginning.
if (vis == View.VISIBLE)
visibility = View.VISIBLE
}
.withEndAction {//in case hiding the recyclerview hide it at the end.
if (vis == View.GONE)
visibility = View.GONE
}
.start()
}
}
视图是这样的
<LinearLayout
android:id="@+id/subRootLinearView"
android:animateLayoutChanges="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!--other views-->
<LinearLayout
android:id="@+id/Container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<FrameLayout
android:id="@+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/backgroundGray"
android:padding="16dp">
<TextView
android:id="@+id/text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/awaitingConfirmation"
android:textColor="@color/colorText"
android:textSize="16sp" />
<ImageView
android:id="@+id/arrow_image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|center"
android:src="@drawable/ic_arrow" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
</LinearLayout>
</LinearLayout>
<!--other views-->
</LinearLayout>
然后在代码中首先添加这一行,这解决了animateLayoutChanges在大嵌套视图中不工作的问题,这基本上使其他视图在隐藏recyclerview时平滑地向上移动
subRootLinearView.layoutTransition.enableTransitionType(LayoutTransition.CHANGING)
你的父线性布局也应该包含这个属性
android:animateLayoutChanges="true"
然后用视图调用该方法
toggleRecyclerViewVisibility(
recycler,
header,
arrowImageView
)
科特林
根据Suragch的回答,下面是一种使用View扩展的优雅方式:
fun View.slideUp(duration: Int = 500) {
visibility = View.VISIBLE
val animate = TranslateAnimation(0f, 0f, this.height.toFloat(), 0f)
animate.duration = duration.toLong()
animate.fillAfter = true
this.startAnimation(animate)
}
fun View.slideDown(duration: Int = 500) {
visibility = View.VISIBLE
val animate = TranslateAnimation(0f, 0f, 0f, this.height.toFloat())
animate.duration = duration.toLong()
animate.fillAfter = true
this.startAnimation(animate)
}
然后无论你想在哪里使用它,你只需要myview。slideup()或myview。slidedown ()
这是我的解决方案。只需要获取视图的引用并调用这个方法:
public static void animateViewFromBottomToTop(final View view){
view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
final int TRANSLATION_Y = view.getHeight();
view.setTranslationY(TRANSLATION_Y);
view.setVisibility(View.GONE);
view.animate()
.translationYBy(-TRANSLATION_Y)
.setDuration(500)
.setStartDelay(200)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(final Animator animation) {
view.setVisibility(View.VISIBLE);
}
})
.start();
}
});
}
不需要做任何其他事情=)