We Keep Coding

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();
});

animation gets laggy after creating many objects dynamically

I have the following code, after creating ~400 ImageView instance (by calling updateUI(NewImage) ~400 times) the newly created ImageView animation would be laggy, the more time elapsed the more laggy they become. I think after anImageView animation is done, i must destroy them to avoid being laggy. any idea?
public void updateUI(final Bitmap bitmap)
{
runOnUiThread(new Runnable() {
#Override
public void run() {
final ImageView tmp = new ImageView(getApplicationContext());
tmp.setImageBitmap(bitmap);
tmp.setY(AT_THE_BOTTON_OF_ACTIVITY);
rv.addView(tmp); add the ImageView to the Relalayout
tmp.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//disappear the imageView
ImageView t=imgs.get(id);
ObjectAnimator opacity = ObjectAnimator.ofFloat(tmp(The ImageView), "alpha", 0.0f);
opacity.setDuration(200);
opacity.start();
}
});
ObjectAnimator anim2 = ObjectAnimator.ofFloat(tmp, "y", 0);
anim2.setDuration(5000);
anim2.setInterpolator(new LinearInterpolator());
anim2.start();
}
});
}

How to set an image visibility after animation is complete

I'm trying to set an image visibility after an animation ends, but i'm have difficulty.
I have created few images and set the tag for each. Whenever the user clicks the image the visibility gets set to invisible. I have also created a method that animates the images. I would like when the animation finishes for the visibility of the images to reset to Visible. Apologies,if this sounds a bit unclear i'm not entirely sure how to word this question. Any help would be appreciated.
public void popBubbles(View view) {
final String tag = String.valueOf(view.getTag());
if(tag=="0"){
bubble.setVisibility(View.INVISIBLE);
}else if(tag=="1"){
bubble1.setVisibility(View.INVISIBLE);
}else if(tag=="2"){
bubble2.setVisibility(View.INVISIBLE);
}else if(tag=="3"){
bubble3.setVisibility(View.INVISIBLE);
}else if(tag=="4"){
bubble4.setVisibility(View.INVISIBLE);
}else if(tag=="5"){
bubble5.setVisibility(View.INVISIBLE);
}else if(tag=="6"){
bubble6.setVisibility(View.INVISIBLE);
}else if(tag=="7"){
bubble7.setVisibility(View.INVISIBLE);
}else if(tag=="8"){
bubble8.setVisibility(View.INVISIBLE);
}
}
public void animateBubbles() {
for (final ImageView img : IMGS) {
animation = ObjectAnimator.ofFloat(img, "translationY", 0f, -deviceHeight);
animation.setDuration(4000);
animation.start();
animation.setRepeatCount(ValueAnimator.INFINITE);
}
}

This code is in kotlin but you can add a listener to the animation use the on AnimationEnd() method like this.
animation.addListener(object : Animator.AnimatorListener {
override fun onAnimationEnd(animation: Animator?) {
}
})
Hope this helps.

set Animation listener and override methods. You can write your logic in onAnimationEnd method
animation.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
}
#Override
public void onAnimationEnd(Animation animation) {
//Do operation on ImageView
}
#Override
public void onAnimationRepeat(Animation animation) {
}
});

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);
}
});
}

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.