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Visual bug with native plugin animation in Ionic 4 Capacitor

I'm currently working in a custom android native plugin for Capacitor. The plugin consists in an app's footer which is working fine except for a hiding animation.
The problem is I'm changing the WebView margin everytime the footer is being shown/hide, which makes a black(sometimes is orange, probably because is one of app's main colors) bar appears in the space occupied by the footer. Black bar disappears once the animation ends.
I've tried changing the WebView margin at animation start/end and the result is the same.
Thanks in advance guys, here is some code.
Animation XML:
<translate
android:duration="150"
android:fromYDelta="0"
android:toYDelta="100%" />
WebView margin function:
private void changeWebViewMargin(float pixels) {
CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) wb.getLayoutParams();
params.setMargins(0, 0, 0, (int) dpTopixel(getContext(), pixels));
wb.setLayoutParams(params);
wb.requestLayout();
}
Hide function:
#PluginMethod()
public void hide(PluginCall call) {
Boolean animated = call.getBoolean("animated");
if (animated == null) {
animated = false;
}
final boolean finalAnimated = animated;
this.getBridge().getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
if (finalAnimated && footer.getVisibility() == View.VISIBLE) {
changeWebViewMargin(0f);
Animation myAnim = AnimationUtils.loadAnimation(getBridge().getContext(), R.anim.hide_footer);
myAnim.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
footer_img.setVisibility(View.INVISIBLE);
footer.setVisibility(View.INVISIBLE);
btn3.setVisibility(View.INVISIBLE);
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});
footer.startAnimation(myAnim);
footer_img.startAnimation(myAnim);
btn3.startAnimation(myAnim);
} else {
footer_img.setVisibility(View.INVISIBLE);
footer.setVisibility(View.INVISIBLE);
btn3.setVisibility(View.INVISIBLE);
changeWebViewMargin(0f);
}
}
});
}

Instead of working with margins try using WindowInsets:
ViewCompat.setOnApplyWindowInsetsListener(wb, (v, insets) -> {
((ViewGroup.MarginLayoutParams) v.getLayoutParams()).bottomMargin =
insets.getSystemWindowInsetTop() + (int) dpTopixel(getContext(), pixels);
return insets.consumeSystemWindowInsets();
});

How would I animate multiple views at the same time over different points?

I'm quite new to Android Studio, and I would like to animate multiple images at the same time, over multiple coordinates.
Let's say I would like to move image A from 0/0 to 100/100, and then to 200/200; at the same time (eg. by the click of a button), image B shall be moved from 0/100 to 100/100, and then to 200/100. All with simple translations.
(As a plus, I would like to be able to set the duration of the movements independently.)
When the animations have finished, there should be an event (somthing like OnAnimationFinish?) to trigger other things, like enabling the start button again.
What would be the most effective way to do this? I know there is an AnimationSet in Android to store multiple animations, but I don't know if this is helpful here.
Thanks in advance!

You can use ObjectAnimator with AnimatorSet to play multiple animations simultaneously with proper listeners.
For example():
val imageXAnimator = ObjectAnimator.ofFloat(imageView, "translationX", translateX)
val imageYAnimator = ObjectAnimator.ofFloat(imageView, "translationY", translateY)
val imageAlphaAnimator = ObjectAnimator.ofFloat(imageView, "alpha", if (reverse) 0F else 1F)
val animationSet = AnimatorSet()
animationSet.playTogether(
imageXAnimator,
imageYAnimator,
imageAlphaAnimator)
animationSet.interpolator = DecelerateInterpolator()
animationSet.duration = 1000
animationSet.addListener(
onStart = {
//When animation is started
},
onEnd = {
//When animation finishes
}
)
animationSet.start()
Or a simple extension in kotlin which can be called on a specific View:
inline fun View.animateTranslationY(translationY: Float, duration: Long = 1000, startDelay: Long = 0) {
val translationYAnimator = ObjectAnimator.ofFloat(this, "translationY", translationY)
translationYAnimator.duration = duration
translationYAnimator.startDelay = startDelay
translationYAnimator.interpolator = LinearInterpolator()
translationYAnimator.addAnimatorListener(
onStart = { },
onEnd = { }
)
translationYAnimator.start()
}

You can use the "View.animate()" method that allow you to access to its sub-methods and events to manage all these stuff. You just have to call "animate()" on a View (TextView, ImageView, EditBox, etc..) and then call its sub-methods to decide what kind of animation to perform: motion, rotation, changing transparency, etc... For each animation you can set a listener that will be called at Start and/or at the End of animation.

Consider these two methods for both views
private void animateFirstView(final ImageView first, long durationFirst, final long durationSecond) {
first.setTranslationX(0);
first.setTranslationY(0);
first.animate().translationX(100).translationY(100).setDuration(durationFirst).setListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animation) {
}
#Override
public void onAnimationEnd(Animator animation) {
first.animate().translationY(200).translationX(200).setDuration(durationSecond).setListener(null).setInterpolator(new LinearInterpolator()).start();
}
#Override
public void onAnimationCancel(Animator animation) {
}
#Override
public void onAnimationRepeat(Animator animation) {
}
}).setInterpolator(new LinearInterpolator()).start();
}
private void animateSecondView(final ImageView second, long durationFirst, final long durationSecond) {
second.setTranslationX(0);
second.setTranslationY(100);
second.animate().translationX(100).translationY(100).setDuration(durationFirst).setListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animation) {
}
#Override
public void onAnimationEnd(Animator animation) {
second.animate().translationY(200).translationX(100).setDuration(durationSecond).setListener(null).setInterpolator(new LinearInterpolator()).start();
}
#Override
public void onAnimationCancel(Animator animation) {
}
#Override
public void onAnimationRepeat(Animator animation) {
}
}).setInterpolator(new LinearInterpolator()).start();
}

You can do this:
private void playAnimation(final View view, final int endRangeY) {
view.animate().translationY(endRangeY) //endRangeY where you want to end the animation
.alpha(0.0f)
.setDuration(3000)
.setListener(new AnimatorListenerAdapter() {
#Override public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
}
});
}

Java - Endless while loop with FadeIn & FadeOut animation

I have an requirement to show the text on Recyclerview with FadeIn & FadeOut animation.
Below is the dynamic list where it's need to loop infinite items i.e; 1-2-3-1-2-3-1-2-3
List<String> mImageDesc = new List<String>();
mImageDesc.add("1");
mImageDesc.add("2");
mImageDesc.add("3");
I have used below code but which is not working for me.
final Animation animationFadeIn = AnimationUtils.loadAnimation(mContext, R.anim.fade_in_animation);
final Animation animationFadeOut = AnimationUtils.loadAnimation(mContext, R.anim.fade_out_animation);
Animation.AnimationListener animListener = new Animation.AnimationListener(){
// Required to change the image
int i = 0;
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationRepeat(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
if (animation == animationFadeIn) {
// Start fade-out animation
mTxtImageDescription.startAnimation(animationFadeOut);
} else if (animation == animationFadeOut) {
*while(mImageDesc.listIterator().hasNext()) {
System.out.println(mImageDesc.listIterator().next());
mTxtImageDescription.setText(mImageDesc.listIterator().next());
mTxtImageDescription.startAnimation(animationFadeIn);*
}
}
}
};
// Set listener to animation
animationFadeIn.setAnimationListener(animListener);
animationFadeOut.setAnimationListener(animListener);
// Start fade-in animation
mTxtImageDescription.setText(mImageDesc.get(0));
mTxtImageDescription.startAnimation(animationFadeIn);

In the last line off your while loop you have RE-started the 'animationFadeIn' ,so
the 'animListener' callbacks will be called forever .Notice if while loop was that repeating you would have 'StackOverflowError'.

How to make method when Value Animator end?

as i read in here : http://developer.android.com/reference/android/animation/ValueAnimator.html
i still dont understand how to make onAnimationEnd listener or something to do when ValueAnimator animation end. there is a part in there said:
Anyone can explain with some example code? Thank you!

You can do something like
ValueAnimator anim = ValueAnimator.ofInt(progress, seekBar.getMax());
anim.setDuration(Utility.setAnimationDuration(progress));
anim.addUpdateListener(new AnimatorUpdateListener()
{
#Override
public void onAnimationUpdate(ValueAnimator animation)
{
int animProgress = (Integer) animation.getAnimatedValue();
seekBar.setProgress(animProgress);
}
});
anim.addListener(new AnimatorListenerAdapter()
{
#Override
public void onAnimationEnd(Animator animation)
{
// done
//your stuff goes here
}
});
anim.start();

Android Animation Bug wont let me click after animation move to the right

So, here's my problem? I have it where it will slide out and then it will stay in that position and then you should be able to click on it again and it will slide back to the original location.
But instead I have to click on where it FIRST was at. Even when it's slided out. I want to make it after the animation I can click it any where, that it slided out.
Here's my code
public void sideBar()
{
ImageView sidebar = (ImageView)findViewById(R.id.sidebar);
if(out == 0)
{
mSlideInRight = AnimationUtils.loadAnimation(this, R.anim.slide_in_right);
mSlideInRight.setFillAfter(true);
sidebar.startAnimation(mSlideInRight);
out= 1;
}
else if(out == 1)
{
mSlideInLeft = AnimationUtils.loadAnimation(this, R.anim.slide_in_left);
sidebar.startAnimation(mSlideInLeft);
out=0;
}
}
and this is the code for when you click on it
public void onClick(View v) {
ImageView sidebar = (ImageView)findViewById(R.id.sidebar);
ImageView popup = (ImageView)findViewById(R.id.popup);
ImageView popup2 = (ImageView)findViewById(R.id.popup2);
switch(v.getId())
{
case R.id.sidebar:
sideBar();
break;
}
}

Animations only affect how your sidebar ImageView is drawn, not its actual position. After your animation completes, you should update the sidebar's layout parameters to your desired position. You can do this in an AnimationListener if you want the position to be updated as the animation runs or after it is complete, or right after your call to startAnimation if you want the position change to happen as the animation starts.
mSlideInRight.setAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation anim) {};
#Override
public void onAnimationRepeat(Animation anim) {};
#Override
public void onAnimationEnd(Animation anim) {
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(...);
// Set properties of layoutParams here
sidebar.setLayoutParams(layoutParams);
};
});
Replace RelativeLayout with whatever layout your ImageView is a child of.