https://github.com/angeloavv/recyclerviewflipper

A custom ViewFlipper to dinamically add views at runtime without render-loss time
https://github.com/angeloavv/recyclerviewflipper

Last synced: about 2 months ago
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A custom ViewFlipper to dinamically add views at runtime without render-loss time

• Host: GitHub
• URL: https://github.com/angeloavv/recyclerviewflipper
• Owner: AngeloAvv
• Created: 2015-06-04T18:03:39.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2019-01-09T17:54:04.000Z (almost 6 years ago)
• Last Synced: 2024-05-21T06:32:09.715Z (7 months ago)
• Language: Java
• Size: 250 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# RecyclerViewFlipper

A custom ViewFlipper to dinamically add views at runtime without render-loss time

The RecyclerViewFlipper is a Custom ViewFlipper that allows you to scroll between an infinite number of Views without render-loss time. The component stores a double-ended queue (deque) in order to pre-load the views that need to be shown. In this way, you could dinamically add an infinite (we suppose to!) odd number of views without wasting your time in pre-rendering phases while scrolling.

The RecyclerViewFlipper also supports animations as its superclass ViewFlipper, and distorts the way of seeing the views since they are handled as a stack, but stored as a deque.

This library also avoids OutOfMemory errors due to a lot of views loaded inside the ViewFlipper, because in this case the views are added at runtime with a fixed number of loaded views per time.

## How to use it

In your layout:

        

        

and in your Java file:

        View firstView = View.inflate(this, FIRST_VIEW, null);

        View secondView = View.inflate(this, SECOND_VIEW, null);

        View thirdView = View.inflate(this, THIRD_VIEW, null);

        ArrayList views = new ArrayList<>();

        views.add(firstView);

        views.add(secondView);

        views.add(thirdView);

        mRecyclerViewFlipper = (RecyclerViewFlipper) findViewById(ID_VIEWFLIPPER);

        mRecyclerViewFlipper.initializeComponents(views);

        mRecyclerViewFlipper.setRecycleViewFlipperRequest(this);

your activity must implement RecyclerViewFlipperRequest\ , where T could be a class that inherits from View and these two methods deal the runtime generation of the dynamic view

        @Override

        public View requestLeftItem() {

          View newView = View.inflate(this, SECOND_VIEW, null);

          Button btn = (Button) newView.findViewById(R.id.btn);

          btn.setText(String.valueOf(mCounter++));

        

          return newView;

        }

        @Override

        public View requestRightItem() {

          View newView = View.inflate(this, SECOND_VIEW, null);

          Button btn = (Button) newView.findViewById(R.id.btn);

          btn.setText(String.valueOf(mCounter--));

        

          return newView;

        }

In this example I've inflated the same view changing the content of the button, but you can do it in very different ways, like putting it inside a Stack while you process it and so on.

Keep in mind that the preprocessing deque is defined when you call mRecyclerViewFlipper.initializeComponents(views);

the queue will keep a number of K views per time, where K is the size of the List

If you want to see an example of the library in action, please [watch a demo here](https://youtu.be/jqfqNujkTfo)