I have a view that is invisible by default(Just for the first time).
Now I need to switch the visibility to VISIBLE with this animation:
if (myView.getVisibility() == View.INVISIBLE) {
myView.setVisibility(View.VISIBLE);
myView.animate().translationY(0);
}
(Like the SnackBar default animation)
But this isn't working. It will turn visible with default animation
Is there any simple way that I could achieve this?
Note
I'm animating my view to dismiss, like this:
myView.animate().translationY(myView.getHeight());
You can do this using XML animation.
Create a slide-up animation XML using set and alpha and put this XML into your resource anim folder.
slide_up.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<translate
android:duration="500"
android:fromYDelta="100%"
android:toYDelta="0" />
</set>
USE:
Use AnimationUtils.loadAnimation() to load animation from XML and set and start animation using .startAnimation() method.
Here is an example:
ImageView imageView = (ImageView) findViewById(R.id.imageView);
// slide-up animation
Animation slideUp = AnimationUtils.loadAnimation(this, R.anim.slide_up);
if (imageView.getVisibility() == View.INVISIBLE) {
imageView.setVisibility(View.VISIBLE);
imageView.startAnimation(slideUp);
}
Hope this will help~
Add animations using ConstraintLayout
Just add below code above the views whose visibility is updated:
TransitionManager.beginDelayedTransition(constraintLayout)
Note:
ConstraintLayout will only perform animation on its direct children since it only knows when you change layout parameters and constraints on the children that it handles.
ConstraintLayout only animates layout related changes.
For more see this post https://robinhood.engineering/beautiful-animations-using-android-constraintlayout-eee5b72ecae3
This is the best way to animate views visibility :
private void viewGoneAnimator(final View view) {
view.animate()
.alpha(0f)
.setDuration(500)
.setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
view.setVisibility(View.GONE);
}
});
}
private void viewVisibleAnimator(final View view) {
view.animate()
.alpha(1f)
.setDuration(500)
.setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
view.setVisibility(View.VISIBLE);
}
});
}
And then call this method wherever you wanted to make a view visible or gone and give the intended view to methods as the parameter.
Just You need to add android:animateLayoutChanges="true" to your layout.
When I set visibility gone to linear_container, linear_bottom will animate from bottom to up and take place of "linear_container".
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:animateLayoutChanges="true"
android:orientation="vertical"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/layoutTop"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:id="#+id/linear_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
</LinearLayout>
<LinearLayout
android:id="#+id/linear_bottom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
</LinearLayout>
</LinearLayout>
Based on this answer:
with this methods, I can set the visibility of my view to VISIBLE with a slideUp animation(Like snackbar animation):
int getScreenHeight() {
DisplayMetrics displaymetrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
return displaymetrics.heightPixels;
}
public void animateOnScreen(View view) {
final int screenHeight = getScreenHeight();
ObjectAnimator animator = ObjectAnimator.ofFloat(view, "y", screenHeight, (screenHeight * 0.8F));
animator.setInterpolator(new DecelerateInterpolator());
animator.start();
}
Then I can use it like this:
if (myView.getVisibility() == View.INVISIBLE) {
myView.setVisibility(View.VISIBLE);
animateOnScreen(myView);
}
Related
I have a view that looks like this:
https://i.stack.imgur.com/zKe01.png
When clicked, I want to animate the grey background color so that it slides from the right side to 50% of its initial width:
https://i.stack.imgur.com/s96BX.png
Here is the relevant portion of the layout 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"
android:id="#+id/content_view"
android:layout_width="match_parent"
android:layout_height="44dp"
android:layout_marginBottom="4dp">
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="1.0"/>
<View
android:id="#+id/background"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="#+id/guideline"
android:background="#drawable/background" />
</androidx.constraintlayout.widget.ConstraintLayout>
I've tried the following:
contentView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(contentView);
constraintSet.setGuidelinePercent(guideline.getId(), 0.5f);
TransitionManager.beginDelayedTransition(contentView);
constraintSet.applyTo(contentView);
}
});
But instead of the background color sliding from the right to the left (100% to 50%), it sort of just cross-fades.
What am I doing wrong? How would I change my code so the animation SLIDES the background color when the guideline percent changes?
You can use android.animation.ValueAnimator to change the percentage value of your guideline inside your constraintLayout, the code would be like this:
contentView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// initialize your guideline
// Guideline guideline = findViewById ....
ValueAnimator valueAnimator = ValueAnimator.ofFloat(1.0f, 0.5f);
// set duration
valueAnimator.setDuration(1000);
// set interpolator and updateListener to get the animated value
valueAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
// update guideline percent value through LayoutParams
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator animation) {
ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams) guideline.getLayoutParams();
// get the float value
lp.guidePercent = (Float) animation.getAnimatedValue();
// update layout params
guideline.setLayoutParams(lp);
}
});
valueAnimator.start();
}
});
I am trying to expand and collapse my view with the help of TransitionManager animation. Following is the output,
See the overlapping layout while collapsing top view. How to avoid that ? I set "detailedView" (one with icons) visibility GONE and use following code for animation,
topView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
TransitionManager.beginDelayedTransition(topView);
TransitionManager.beginDelayedTransition(bottomView);
if (detailsView.getVisibility() == View.VISIBLE) {
detailsView.setVisibility(View.GONE);
cardText.setText("Collapse Title");
} else {
detailsView.setVisibility(View.VISIBLE);
cardText.setText("Expanded Title");
}
}
});
I would build the animation differently. I would make a LinearLayout with the top cell with wrap_content, and when clicking I would do something like:
valueAnimator = ValueAnimator.ofInt(titleContainer.getHeight(),titleContainer.getHeight() + newHeight );
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator animation) {
titleContainer.setHeight(animation.getAnimatedValue());
}
});
valueAnimator.setDuration(270);
valueAnimator.start();
I had the same problem.
The first argument that the TransitionManager.beginDelayedTransition() function takes must be the parent of all the views that will interact in the transition e.g:
I have the next layout:
<!-- The scene root -->
<LinearLayout
android:id="#+id/transition_container" >
<!-- First card -->
<androidx.cardview.widget.CardView
android:id="#+id/expandableCard1">
<LinearLayout
android:id="#+id/staticHeader1">
</LinearLayout>
<LinearLayout
android:id="#+id/expandableContent1">
</LinearLayout>
</androidx.cardview.widget.CardView>
<!-- Second card -->
<androidx.cardview.widget.CardView
android:id="#+id/expandableCard2">
<LinearLayout
android:id="#+id/staticHeader2">
</LinearLayout>
<LinearLayout
android:id="#+id/expandableContent2">
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
And my code (kotlin):
// toggle
if( expandableContent1.visibility == View.GONE ){
// apply to the root scene
TransitionManager.beginDelayedTransition(transition_container )
// change the visibility of the expandable content
expandableContent1.visibility = View.VISIBLE
arrowBtn.setImageResource( R.drawable.ic_arrow_up_24)
} else {
// apply to the root scene
TransitionManager.beginDelayedTransition(transition_container )
// change the visibility of the expandable content
expandableContent1.visibility = View.GONE
arrowBtn.setImageResource( R.drawable.ic_arrow_down_24)
}
I'm trying to have my toolbar hide or show when the user is scrolling a list. To do it, I'm using a translation but a blank space appears instead of my actionBar. If I use a setVisibility(View.GONE), the blank space will appear during the animation and hide when it's done which is ugly..
Here is a short video of my issue
And here is how i do my animation (from Google I/O app) :
public void showToolbar(boolean show){
if (show) {
toolbar.animate()
.translationY(0)
.alpha(1)
.setDuration(HEADER_HIDE_ANIM_DURATION)
.setInterpolator(new DecelerateInterpolator());
} else {
toolbar.animate()
.translationY(-toolbar.getBottom())
.alpha(0)
.setDuration(HEADER_HIDE_ANIM_DURATION)
.setInterpolator(new DecelerateInterpolator());
}
}
And here is my layout :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/mainContent">
<include layout="#layout/toolbar"
android:id="#+id/my_toolbar" />
<fragment
android:name="com.ar.oe.fragments.SectionsFragment"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?attr/actionBarSize"/>
</RelativeLayout>
And my toolbar
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/my_toolbar"
android:layout_height="?attr/actionBarSize"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
/>
You need animate your container and not your toolbar.
Try this:
RelativeLayout mainContent = (RelativeLayout) findById(R.id.mainContent);
public void showToolbar(boolean show){
if (show) {
mainContent.animate()
.translationY(0)
.alpha(1)
.setDuration(HEADER_HIDE_ANIM_DURATION)
.setInterpolator(new DecelerateInterpolator());
} else {
mainContent.animate()
.translationY(-toolbar.getBottom())
.alpha(0)
.setDuration(HEADER_HIDE_ANIM_DURATION)
.setInterpolator(new DecelerateInterpolator());
}
}
It work for me ;)
If you want to move your fragment with your toolbar, you need animate your fragment and not only your bar.
It is better that you show slide up translate animation for both toolbar and your below fragment (together), when user is trying to scroll, such that only toolbar goes out of the view and fragment reaches the top. (within say, 200ms). To do this, translate the whole outer Relative Layout by say some 20% (you can change such that only toolbar goes out of the view) :
Add slide_up.xml in your anim folder :
<?xml version="1.0" encoding="utf-8"?>
<set
xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:fillAfter="false"
android:fromYDelta="0%"
android:toYDelta="-20%"
android:duration="200"/>
</set>
Then, when scroll event is triggered, do the following :
...
RelativeLayout rel = (RelativeLayout)findViewById(R.id.mainContent);
Animation slideUp = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.slide_up);
rel.startAnimation(slideUp);
...
Hope this helps...
I have two views on the screen
one sits at the top of the screen and on sits directly below it
I need the green view to slide out the top - and make the blue view take up the entire screen as a result
this is what i am trying to do:
-- the problem is , when the animation is finished, the blue view just "jumps" up - and i want it to ease up with the disappearing green view, how do i do that?
slide_in_animation.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="1000"
android:fromYDelta="-100%"
android:toYDelta="0%" />
</set>
slide_out_animation.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="1000"
android:fromYDelta="0%"
android:toYDelta="-100%" />
</set>
MainActivity.java
slideInAnimation = AnimationUtils.loadAnimation(mActivity, R.anim.slide_in_animation);
slideOutAnimation = AnimationUtils.loadAnimation(mActivity,R.anim.slide_out_animation);
slideInAnimation.setAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
mGreenView.setVisibility(View.VISIBLE);
}
#Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
#Override
public void onAnimationEnd(Animation animation) {
}
});
slideOutAnimation.setAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
mGreenView.setVisibility(View.GONE);
}
#Override
public void onAnimationRepeat(Animation animation) {
// To change body of implemented methods use File | Settings
// | File Templates.
}
});
This worked for me
First you must import this library: http://nineoldandroids.com/
The import is done by importing existing android project into your workspace, afterwards right click your Poject -> Properties -> Android. Here you will see a library section, click the Add button and add the nineoldandroids library.
First off, here is the layout xml used for this to work:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/parentLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<FrameLayout
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent"
android:divider="#android:color/transparent"
android:fastScrollEnabled="false"
android:listSelector="#android:color/transparent"
android:scrollbars="vertical"
android:smoothScrollbar="true" />
<View
android:id="#+id/greenView"
android:layout_width="match_parent"
android:layout_height="150dp"
android:background="#ff00ff00"
android:alpha="0"/>
</FrameLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/animate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="clickHandler"
android:text="animate" />
<Button
android:id="#+id/close"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="clickHandler"
android:text="close" />
</LinearLayout>
Notice: Both the ListView and the green View could be layouts of any types with any kind of content.
And next a proof of concept Activity.
public class TestActivity extends Activity {
private View greenView;
private ListView listView;
private int greenHeight;
private boolean isShowingBox;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
// The animated view
greenView = (View)findViewById(R.id.greenView);
listView = (ListView)findViewById(R.id.listView1);
// Instanciating an array list (you don't need to do this, you already have yours)
ArrayList<String> your_array_list = new ArrayList<String>();
your_array_list.add("1");
your_array_list.add("2");
your_array_list.add("3");
your_array_list.add("4");
your_array_list.add("5");
your_array_list.add("6");
your_array_list.add("7");
your_array_list.add("8");
your_array_list.add("9");
your_array_list.add("10");
your_array_list.add("11");
your_array_list.add("12");
your_array_list.add("13");
your_array_list.add("14");
your_array_list.add("15");
// This is the array adapter, it takes the context of the activity as a first // parameter, the type of list view as a second parameter and your array as a third parameter
ArrayAdapter<String> arrayAdapter =
new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, your_array_list);
listView.setAdapter(arrayAdapter);
final LinearLayout layout = (LinearLayout)findViewById(R.id.parentLayout);
final ViewTreeObserver vto = layout.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
if (Build.VERSION.SDK_INT < 16) {
layout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
} else {
layout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
greenHeight = greenView.getHeight();
}
});
}
public void clickHandler(View v) {
if (isShowingBox) {
isShowingBox = false;
slideOut(1500, 0);
} else {
isShowingBox = true;
slideIn(1500, 0);
}
}
private void slideIn(int duration, int delay) {
AnimatorSet set = new AnimatorSet();
set.playTogether(
// animate from off-screen in to screen
ObjectAnimator.ofFloat(greenView, "translationY", -greenHeight, 0),
ObjectAnimator.ofFloat(listView, "translationY", 0, greenHeight),
ObjectAnimator.ofFloat(greenView, "alpha", 0, 0.25f, 1)
// add other animations if you wish
);
set.setStartDelay(delay);
set.setDuration(duration).start();
}
private void slideOut(int duration, int delay) {
AnimatorSet set = new AnimatorSet();
set.playTogether(
// animate from on-screen and out
ObjectAnimator.ofFloat(greenView, "translationY", 0, -greenHeight),
ObjectAnimator.ofFloat(listView, "translationY", greenHeight, 0),
ObjectAnimator.ofFloat(greenView, "alpha", 1, 1, 1)
// add other animations if you wish
);
set.setStartDelay(delay);
set.setDuration(duration).start();
}
}
Important note: Remember to import the AnimatorSet and ObjectAnimator from nineoldandroids in your class and not the Android SDK ones!!!
One potential solution that makes a nice and fluid exit is using the weight attribute of LinearLayout with a ValueAnimator. Assuming you're using LinearLayout as your parent view for your green and blue blocks, your code would look something like this.
layout.xml
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<!--Let's assume this is the view you wish you disappear-->
<View
android:id="#+id/view1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical"/>
<View
android:id="#+id/view2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"/>
</LinearLayout>
Now with this, in your code you can use the ValueAnimator as follows:
public class MainActivity extends Activity implements AnimatorUpdateListener
{
View view1;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
view1 = (View)findViewById(R.id.view1);
}
public void someAction()
{
//This is the important part, because it is FROM the first value TO
//the second. Notice that it must be a float type
ValueAnimator anim = ValueAnimator.ofFloat(1f, 0f);
anim.setDuration(200);
anim.addUpdateListener(this);
anim.start();
}
#Override
public void onAnimationUpdate(ValueAnimator animation)
{
view1.setLayoutParams(new LinearLayout.LayoutParams(0,
LayoutParams.MATCH_PARENT,
(Float) animation.getAnimatedValue()));
}
}
The ValueAnimator will automatically calculate the increments and execute them to get the smooth transition you want with the added benefit of keeping your view running.
You may also need to handle some strange UI occurrences as a result of shrinking the view (i.e., TextViews may act funny on the transition out), but I didn't run into too much trouble patching those up and keeping it neat.
Good luck! Hope this helps.
Use following code.
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true">
<scale
android:duration="500"
android:fromXScale="1.0"
android:fromYScale="0.0"
android:interpolator="#android:anim/linear_interpolator"
android:toXScale="1.0"
android:toYScale="1.0" />
</set>
i have 2 views in a RelativeLayout like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<View
android:id="#+id/view1"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#drawable/shape_red"/>
<View
android:id="#+id/view2"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_below="#id/view1"
android:background="#drawable/shape_blue"/>
</RelativeLayout>
now, i animate the y property of view1 from 0 to 300. but i want view2 to change its position according to view1 - because view2 is set to be below (layout-below) view1.
as this isn't working, i tried to add an onAnimationEnd listener to the animation. like this:
ObjectAnimator ani = ObjectAnimator.ofFloat(view1, "Y", 200);
ani.setDuration(2000);
ani.addListener(new AnimatorListenerAdapter()
{
#Override
public void onAnimationEnd(Animator animation)
{
LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, view2.getHeight());
params.addRule(RelativeLayout.BELOW, view1.getId());
view2.setLayoutParams(params);
}
});
but view2 didn't change its position at all.
i would like to avoid making a new animation for view2 if possible, so please don't bother to suggest one. ;)
does anyone have some suggestions?
Check this if it solves your problem:
ani.addListener(new AnimatorListenerAdapter()
{
#Override
public void onAnimationEnd(Animator animation)
{
LayoutParams params = view2.getLayoutParams();
// change it ...
params.addRule(RelativeLayout.BELOW, view1.getId());
view2.setLayoutParams(params);
}
});