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Here is the gif:

There are several features:

• Fade in and immediately out.


• It has margin. Because the default effect is match parent width.

Now I have already solved the margin problem. But I don't know how to achieve the animation effect. And here's my code:

snackbar_animation.xml:

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android"

android:duration="500"

android:fillAfter="true"

android:shareInterpolator="true">



<alpha

    android:fromAlpha="0.1"

    android:toAlpha="1" />



<scale

    android:fromXScale="0.5"

    android:fromYScale="0.0"

    android:toXScale="1"

    android:toYScale="1"/>



</set>

MainActivity:

public class MainActivity extends AppCompatActivity implements View.OnClickListener{



private Button snackbar;

private CoordinatorLayout coordinatorLayout;



@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);



    setContentView(R.layout.snackbar_test);



    coordinatorLayout = findViewById(R.id.coordinator);



    snackbar = findViewById(R.id.show_snackbar);

    snackbar.setOnClickListener(this);

}



@Override

public void onClick(View view) {

    switch (view.getId()){

        case R.id.show_snackbar:

            showSnackbar();

            break;

    }

}



private void showSnackbar(){

    Snackbar snackbar = Snackbar.make(coordinatorLayout,"i am a snack bar",Snackbar.LENGTH_SHORT);



    View sbView = snackbar.getView();



    // add animation

    Animation animation = AnimationUtils.loadAnimation(this,R.anim.snackbar_animation);

    sbView.setAnimation(animation);



    // modify margin

    CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) sbView.getLayoutParams();

    params.setMargins(params.leftMargin + 50,

            params.topMargin,

            params.rightMargin + 50,

            params.bottomMargin + 50);



    sbView.setLayoutParams(params);



    // show snackbar

    snackbar.show();

}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout

    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:id="@+id/coordinator"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    app:layout_constraintBottom_toBottomOf="parent"

    app:layout_constraintEnd_toEndOf="parent"

    app:layout_constraintStart_toStartOf="parent"

    app:layout_constraintTop_toTopOf="parent">



    <Button

        android:id="@+id/show_snackbar"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="8dp"

        android:paddingTop="10dp"

        android:text="show snackbar" />



</android.support.design.widget.CoordinatorLayout>

If there are something else I need to know about this question, just comment below this question.such as: value animation or other things.I am new to the animation, so if you know the great learning materials, tell me, Thanks.

Read this. setAnimation() just queues an animation. It doesn't actually start anything. SnackBar doesn't call startAnimation when it's show, either.

However, even if you use startAnimation(), your code probably won't work as-is. You need to initially set the scale of your SnackBar to 0, so it's at the proper starting value.

You should use SnackBar#setCallback() and then start your show animation inside the onShow() method. Set your dismiss animation inside the onDismiss() method.