🎨An Android warpped ScrollView, which works just like the UIScrollView in iOS when the user tries to scroll it beyond its content.🎨

• ♠️Maximum adaptability. It supports the horizontal and the vertical direction, and extends the NestScrollView. So it not only can work just like the ScrollView and the HorizontalScrollView, but also can work properly with Nest Scrolling.
• ♥️Customizable damping coefficient (easier or harder to over scroll). The incremental damping or constant damping can be chose during the over-scrolling.
• ♣️Customizable bounce delay, the duration of the restoring animation.
• ♦️Customizable interpolator, the rate of change of the restoring animation.

root project:build.gradle

  allprojects {
      repositories {
          ...
          maven { url "https://jitpack.io" }
      }
  }

app:build.gradle

  dependencies {
     implementation 'com.github.woxingxiao:BounceScrollView:LATEST_VERSION'
  }

<?xml version="1.0" encoding="utf-8"?>
<com.xw.repo.widget.BounceScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

          <!-- The ConstraintLayout can be replaced by FrameLayout, LinearLayout, etc. -->
          <!-- Your content view goes here. -->

     </android.support.constraint.ConstraintLayout>
</com.xw.repo.widget.BounceScrollView>

Listener to the scrolling event of content of the BounceScrollView:

mBounceScrollView.setOnScrollListener(new OnScrollListener() {
    @Override
    public void onScrolling(int scrollX, int scrollY) {

    }
});

Listener to the over-scrolling event of the BounceScrollView:

mBounceScrollView.setOnOverScrollListener(new OnOverScrollListener() {
    @Override
    public void onOverScrolling(boolean fromStart, int overScrolledDistance) {

    }
});

It took me an amount of time to adjust the parameters pixel by pixel, in order to achieve the best experience I think.:beers:

🍰If the attr damping is set to 2.0, the over-scrolling effort is almost the same as UIScrollView in iOS.
🍰The interpolator of the restoring animation is customizable. You can do it by:

mBounceScrollView.setBounceInterpolator(new YourCustomizedInterpolator());

Thanks to the repo EasingInterpolator, there are multiple choices to choose.

Most of the resources in the sample come from gameofthrones.com. Everybody likes GoT, right? 😉

   Copyright 2018 woxingxiao

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.