Animate visibility of a view from gone to visible with animation

Question

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

Answer 1

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>

Answer 2

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(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.

Answer 3

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);
}

Answer 4

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~

Answer 5

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