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
这里有另一种方法来处理多个按钮(在这个例子中是ImageView)
MainActivity.java
findViewById(R.id.arrowIV).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (strokeWidthIV.getAlpha() == 0f) {
findViewById(R.id.arrowIV).animate().rotationBy(180);
strokeWidthIV.animate().translationXBy(-120 * 4).alpha(1f);
findViewById(R.id.colorChooseIV).animate().translationXBy(-120 * 3).alpha(1f);
findViewById(R.id.saveIV).animate().translationXBy(-120 * 2).alpha(1f);
findViewById(R.id.clearAllIV).animate().translationXBy(-120).alpha(1f);
} else {
findViewById(R.id.arrowIV).animate().rotationBy(180);
strokeWidthIV.animate().translationXBy(120 * 4).alpha(0f);
findViewById(R.id.colorChooseIV).animate().translationXBy(120 * 3).alpha(0f);
findViewById(R.id.saveIV).animate().translationXBy(120 * 2).alpha(0f);
findViewById(R.id.clearAllIV).animate().translationXBy(120).alpha(0f);
}
}
});
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activity.MainActivity">
<ImageView
android:id="@+id/strokeWidthIV"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_margin="8dp"
android:alpha="0"
android:contentDescription="Clear All"
android:padding="4dp"
android:scaleType="fitXY"
android:src="@drawable/ic_edit"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText" />
<ImageView
android:id="@+id/colorChooseIV"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_margin="8dp"
android:alpha="0"
android:contentDescription="Clear All"
android:padding="4dp"
android:scaleType="fitXY"
android:src="@drawable/ic_palette"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText" />
<ImageView
android:id="@+id/saveIV"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_margin="8dp"
android:alpha="0"
android:contentDescription="Clear All"
android:padding="4dp"
android:scaleType="fitXY"
android:src="@drawable/ic_save"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText" />
<ImageView
android:id="@+id/clearAllIV"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_margin="8dp"
android:alpha="0"
android:contentDescription="Clear All"
android:padding="4dp"
android:scaleType="fitXY"
android:src="@drawable/ic_clear_all"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText" />
<ImageView
android:id="@+id/arrowIV"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_margin="8dp"
android:contentDescription="Arrow"
android:padding="4dp"
android:scaleType="fitXY"
android:src="@drawable/ic_arrow"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText" />
</androidx.constraintlayout.widget.ConstraintLayout>
其他回答
最简单的解决方案:在持有视图的容器上设置android:animateLayoutChanges="true"。
如果你有一个如下所示的布局，这个容器中所有视图的可见性变化都将自动动画化。
<LinearLayout android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
>
<Views_which_change_visibility>
</LinearLayout>
你可以在动画布局变化- Android开发者上找到更多细节
通过Kotlin扩展，你可以这样使用:
enum class SlideDirection{
UP,
DOWN,
LEFT,
RIGHT
}
enum class SlideType{
SHOW,
HIDE
}
fun View.slideAnimation(direction: SlideDirection, type: SlideType, duration: Long = 250){
val fromX: Float
val toX: Float
val fromY: Float
val toY: Float
val array = IntArray(2)
getLocationInWindow(array)
if((type == SlideType.HIDE && (direction == SlideDirection.RIGHT || direction == SlideDirection.DOWN)) ||
(type == SlideType.SHOW && (direction == SlideDirection.LEFT || direction == SlideDirection.UP)) ){
val displayMetrics = DisplayMetrics()
val windowManager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
windowManager.defaultDisplay.getMetrics(displayMetrics)
val deviceWidth = displayMetrics.widthPixels
val deviceHeight = displayMetrics.heightPixels
array[0] = deviceWidth
array[1] = deviceHeight
}
when (direction) {
SlideDirection.UP -> {
fromX = 0f
toX = 0f
fromY = if(type == SlideType.HIDE) 0f else (array[1] + height).toFloat()
toY = if(type == SlideType.HIDE) -1f * (array[1] + height) else 0f
}
SlideDirection.DOWN -> {
fromX = 0f
toX = 0f
fromY = if(type == SlideType.HIDE) 0f else -1f * (array[1] + height)
toY = if(type == SlideType.HIDE) 1f * (array[1] + height) else 0f
}
SlideDirection.LEFT -> {
fromX = if(type == SlideType.HIDE) 0f else 1f * (array[0] + width)
toX = if(type == SlideType.HIDE) -1f * (array[0] + width) else 0f
fromY = 0f
toY = 0f
}
SlideDirection.RIGHT -> {
fromX = if(type == SlideType.HIDE) 0f else -1f * (array[0] + width)
toX = if(type == SlideType.HIDE) 1f * (array[0] + width) else 0f
fromY = 0f
toY = 0f
}
}
val animate = TranslateAnimation(
fromX,
toX,
fromY,
toY
)
animate.duration = duration
animate.setAnimationListener(object: Animation.AnimationListener{
override fun onAnimationRepeat(animation: Animation?) {
}
override fun onAnimationEnd(animation: Animation?) {
if(type == SlideType.HIDE){
visibility = View.INVISIBLE
}
}
override fun onAnimationStart(animation: Animation?) {
visibility = View.VISIBLE
}
})
startAnimation(animate)
}
扩展示例:
view.slideAnimation(SlideDirection.UP, SlideType.HIDE)//to make it disappear through top of the screen
view.slideAnimation(SlideDirection.DOWN, SlideType.SHOW)//to make it reappear from top of the screen
view.slideAnimation(SlideDirection.DOWN, SlideType.HIDE)//to make it disappear through bottom of the screen
view.slideAnimation(SlideDirection.UP, SlideType.SHOW)//to make it reappear from bottom of the screen
现在可见性改变动画应该通过过渡API来完成，该API在支持(androidx)包中可用。只需调用TransitionManager。beginDelayedTransition方法使用Slide过渡，然后改变视图的可见性。
import androidx.transition.Slide;
import androidx.transition.Transition;
import androidx.transition.TransitionManager;
private void toggle(boolean show) {
View redLayout = findViewById(R.id.redLayout);
ViewGroup parent = findViewById(R.id.parent);
Transition transition = new Slide(Gravity.BOTTOM);
transition.setDuration(600);
transition.addTarget(R.id.redLayout);
TransitionManager.beginDelayedTransition(parent, transition);
redLayout.setVisibility(show ? View.VISIBLE : View.GONE);
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="play" />
<LinearLayout
android:id="@+id/redLayout"
android:layout_width="match_parent"
android:layout_height="400dp"
android:background="#5f00"
android:layout_alignParentBottom="true" />
</RelativeLayout>
用另一个默认和自定义转换示例检查这个答案。
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
)
我在理解和应用公认的答案时遇到了困难。我需要更多的背景知识。现在我已经搞清楚了，下面是一个完整的例子:
MainActivity.java
public class MainActivity extends AppCompatActivity {
Button myButton;
View myView;
boolean isUp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myView = findViewById(R.id.my_view);
myButton = findViewById(R.id.my_button);
// initialize as invisible (could also do in xml)
myView.setVisibility(View.INVISIBLE);
myButton.setText("Slide up");
isUp = false;
}
// slide the view from below itself to the current position
public void slideUp(View view){
view.setVisibility(View.VISIBLE);
TranslateAnimation animate = new TranslateAnimation(
0, // fromXDelta
0, // toXDelta
view.getHeight(), // fromYDelta
0); // toYDelta
animate.setDuration(500);
animate.setFillAfter(true);
view.startAnimation(animate);
}
// slide the view from its current position to below itself
public void slideDown(View view){
TranslateAnimation animate = new TranslateAnimation(
0, // fromXDelta
0, // toXDelta
0, // fromYDelta
view.getHeight()); // toYDelta
animate.setDuration(500);
animate.setFillAfter(true);
view.startAnimation(animate);
}
public void onSlideViewButtonClick(View view) {
if (isUp) {
slideDown(myView);
myButton.setText("Slide up");
} else {
slideUp(myView);
myButton.setText("Slide down");
}
isUp = !isUp;
}
}
activity_mail.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.slideview.MainActivity">
<Button
android:id="@+id/my_button"
android:layout_centerHorizontal="true"
android:layout_marginTop="100dp"
android:onClick="onSlideViewButtonClick"
android:layout_width="150dp"
android:layout_height="wrap_content"/>
<LinearLayout
android:id="@+id/my_view"
android:background="#a6e1aa"
android:orientation="vertical"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="200dp">
</LinearLayout>
</RelativeLayout>
笔记
感谢这篇文章为我指明了正确的方向。它比本页上的其他答案更有帮助。 如果你想从屏幕上的视图开始，那么不要将它初始化为INVISIBLE。 因为我们是完全在屏幕外制作动画，所以没有必要将它设置为INVISIBLE。如果你的动画不是完全脱离屏幕，那么你可以添加一个alpha动画，并使用AnimatorListenerAdapter设置可见性。 动画文档
推荐文章
- BottomSheetDialogFragment的圆角
- 在应用程序启动时出现“无法获得BatchedBridge，请确保您的bundle被正确打包”的错误
- 我如何改变默认对话框按钮的文本颜色在安卓5
- 更改单选按钮的圆圈颜色
- 如何在android中复制一个文件?
- adb找不到我的设备/手机(MacOS X)
- 如何在新的材质主题中改变背面箭头的颜色?
- androidviewpager与底部点
- 相同的导航抽屉在不同的活动
- 如何从视图中获得托管活动?
- 单一的TextView与多种颜色的文本
- 如何在非活动类(LocationManager)中使用getSystemService ?
- 在清单中注册应用程序类?
- Android:从数组中编程创建旋转器
- Android命令行工具sdkmanager总是显示:警告:无法创建设置
