material-scrolling

Android library for material scrolling techniques.

Features

• Easily implement material scrolling techniques with RecyclerView.
• Customize the behavior while scrolling.
• Support RecyclerView in ViewPager.

Usage

(For a working implementation of this project see the sample.)

MaterialScrollingLayout

Layout ObservableRecyclerView inside of MaterialScrollingLayout.

<jp.satorufujiwara.scrolling.MaterialScrollingLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/materialScrollingLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:ms_flexible_height="240dp"
        >

    <com.github.ksoichiro.android.observablescrollview.ObservableRecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            />

</jp.satorufujiwara.scrolling.MaterialScrollingLayout>

ms_flexible_heightis height from RecyclerViews top to RecyclerView's first item.

And call MaterialScrollingLayout.addBehavior(View, Behavior) in Activity or Fragment.

First argument is target View. Second argument is View's behavior while scrolling.

materialScrollingLayout.addBehavior(bgImageView, new ParallaxBehavior());
materialScrollingLayout.addBehavior(titleTextView, new ScrollingBehavior());
materialScrollingLayout.addBehavior(fabView, new FabBehavior(getResources()));

FabBehavior is customized Behavior. If you want customize behavior, create class that extends 'Behavior'.

public class TitleBehavior extends Behavior {
    
    private final int scrollLimitHeight;

    public TitleBehavior(Resources r) {
        scrollLimitHeight = r.getDimensionPixelOffset(R.dimen.title_scroll_height);
    }

    @Override
    protected void onScrolled(View target, int scrollY, int dy) {
        ViewCompat.setTranslationY(target, -Math.min(scrollY, scrollLimitHeight));
    }
}

MaterialViewPager

If you want to use with ViewPager, use MaterialViewPager.

And PagerAdapter must imptelement MaterialScrollingViewPager.ContainRecyclerViewPagerAdapter.

<jp.satorufujiwara.scrolling.MaterialScrollingViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:ms_flexible_height="240dp"
        app:ms_base_height="48dp"
        />

And call MaterialScrollingViewPager.addBehavior(View, Behavior) in Activity or Fragment.

Gradle

repositories {
    jcenter()
}
dependencies {
    compile 'jp.satorufujiwara:material-scrolling:1.2.1'
    compile 'com.github.ksoichiro:android-observablescrollview:1.6.0'
}

Developed By

Satoru Fujiwara (satorufujiwara)

• Twitter satorufujiwara
• holly.wist@gmail.com

Other Projects

• recyclerview-binder
• Android Library for RecyclerView to manage order of items and multiple view types.
• lighthttp
• Lightweitht HTTP client for Android

Dependencies

• Library

• Android-ObservableScrollView

• Sample

• recyclerview-binder

• SmartTabLayout

License

Copyright 2015 Satoru Fujiwara

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.