Android library that provides A RecyclerView.LayoutManager implementation which provides functionality to show a group of stack view.

StackLayoutManager provides the following advantages:

• High performance: the bottom layer use the recyclerView recycle mechanism to allow you to display a large number of itemviews without OOM.
• Flexibility: you can choose which direction the card will slide out, and there are four directions to choose.
• Hight customization: if you want to implement animation and layout yourself, you can inherit StackAnimation or StackLayout to achieve the desired effect.
• Easy to use: you can start using it right away. All you need to do is to drop the JAR file into your project and replace LinearLayoutManager object in your code by com.littlemango.stacklayoutmanager.StackLayoutManager

If you're using Gradle, you can declare this library as a dependency:

dependencies {
    implementation 'com.littlemango:stacklayoutmanager:1.0.5'
}

The simplest way to use StackLayoutManager is by dropping the library JAR file into your project creating the StackLayoutManager object and pass it back to the RecyclerView object:

StackLayoutManager manager = new StackLayoutManager();

recyclerView.setLayoutManager(manager);

1. You can set the orientation of the card to slide out of the screen:

//orientation can be one of ScrollOrientation.BOTTOM_TO_TOP or TOP_TO_BOTTOM or RIGHT_TO_LEFT or LEFT_TO_RIGHT
ScrollOrientation orientation = ScrollOrientation.BOTTOM_TO_TOP

StackLayoutManager manager = new StackLayoutManager(orientation);

recyclerView.setLayoutManager(manager);

2. You can set the visible item count:

//in the construction method
StackLayoutManager manager = new StackLayoutManager(ScrollOrientation.BOTTOM_TO_TOP, 3);

//or in setter method
manager.setVisibleItemCount(3);

3. You can change the offset between items:

manager.setItemOffset(50);

4. You can scroll smoothly or immediately to the specified position:

//scroll to position with animation
recyclerView.smoothScrollToPosition(3);

//scroll to position immediately without animation
recyclerView.scrollToPosition(3);

5. You can set the view to turn only one page at a time, like a ViewPager, or you can turn pages continuously：

manager.setPagerMode(true or false);

6. When in PagerView paging mode, you can set the minimum sliding velocity that triggers the paging effect:

manager.setPagerFlingVelocity(3000);

7. You can add a item changed Listener to StackLayoutManager:

mStackLayoutManager.setItemChangedListener(new StackLayoutManager.ItemChangedListener() {
    @Override
    public void onItemChanged(int position) {
        mToast.setText("first visible item position is " + position);
        mToast.show();
    }
});

8. I use the DefaultAnimation class to provide animation, which is inherited from StackAnimation, and you can inherit both classes to achieve the desired animation effect:

DefaultAnimation animation = new DefaultAnimation(ScrollOrientation.BOTTOM_TO_TOP, visibleCount);
manager.setAnimation(animation);

9. I use the DefaultLayout class to implement the layout of items, which inherits from StackLayout. You can inherit both classes to achieve the layout effect you want：

StackLayoutManager manager = new StackLayoutManager(ScrollOrientation.BOTTOM_TO_TOP, 
                visibleCount,
                DefaultAnimation.class,
                DefaultLayout.class);

You can clone or download this project to your computer and install sample apk on your phone to see the effect.

Or you can scan QR code to install the apk:

MIT License See MIT License