android-parallax-recycleview
Integration
Step 1. Add the JitPack repository to your build file
repositories {
maven {
url "https://jitpack.io"
}
}
Step 2. Add the dependency
dependencies {
compile 'com.github.kanytu:android-parallax-recyclerview:v1.7'
}
USAGE
(Example project - https://github.com/kanytu/example-parallaxrecycler)
- Create your object list and pass it to the constructor of
ParallaxRecyclerAdapter
List<String> myContent = new ArrayList<String>();
// or another object list ParallaxRecyclerAdapter<String> adapter = new ParallaxRecyclerAdapter<String>(content) {
@Override
public void onBindViewHolderImpl(RecyclerView.ViewHolder viewHolder, ParallaxRecyclerAdapter<String> adapter, int i) {
// If you're using your custom handler (as you should of course)
// you need to cast viewHolder to it.
((MyCustomViewHolder) viewHolder).textView.setText(myContent.get(i));
// your bind holder routine.
}
@Override
public RecyclerView.ViewHolder onCreateViewHolderImpl(ViewGroup viewGroup, final ParallaxRecyclerAdapter<String> adapter, int i) {
// Here is where you inflate your row and pass it to the constructor of your ViewHolder
return new MyCustomViewHolder(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.myRow, viewGroup, false));
}
@Override
public int getItemCountImpl(ParallaxRecyclerAdapter<String> adapter) {
// return the content of your array
return myContent.size();
}
}
;- Now we set the parallax header. You need to pass the
RecyclerViewtoo to implement the scroll listeners.
myAdapter.setParallaxHeader(LayoutInflater.from(this).inflate(
R.layout.myParallaxView, myRecycler, false), myRecyclerView);
There a few other listeners you can implement:
// Event triggered when you click on a item of the adapter. void onClick(View v, int position);
// Event triggered when the parallax is being scrolled. void onParallaxScroll(float percentage, float offset, View parallax);
RESULT
COOL EFFECTS YOU CAN DO WITH THIS LIBRARY
- Transparent toolbar effect
@Override public void onParallaxScroll(float percentage, float offset, View parallax) {
Drawable c = mToolbar.getBackground();
c.setAlpha(Math.round(percentage * 255));
mToolbar.setBackground(c);
}
License
Copyright (c) 2014 Pedro Oliveira
Licensed under the Apache License, Version 2.0