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Recycler-swipe-drag

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This library provides long press drag and swipe for recycler view items, based on the awesome explanation by Paul Burk & implemented in kotlin, video demo can be seen here

How to use

Include the library

Add the following lines in your app level dependencies

dependencies {
    compile 'me.rishabhkhanna:RecyclerviewSwipeDrag:1.3.1'
}

NOTE: If you get errors regarding conflicting versions of Android Support Library (Manifest merger error), exclude the transitive dependency when including my library

dependencies {
    compile ('me.rishabhkhanna:RecyclerviewSwipeDrag:1.3.1') {
        exclude group: 'com.android.support', module: 'recyclerview-v7'
    }
}

Usage

To use Recyclerview Swipe and Drag in your project, add the following lines and attach ItemTouchHelper with your Recyclerview object

RecyclerHelper touchHelper = new RecyclerHelper<T>(dataArrayList, (RecyclerView.Adapter) recyclerAdapter);
touchHelper.setRecyclerItemDragEnabled(true);
touchHelper.setRecyclerItemSwipeEnabled(true);
ItemTouchHelper itemTouchHelper = new ItemTouchHelper(touchHelper);
itemTouchHelper.attachToRecyclerView(recyclerView);
  • here T is the generic, pass your arrayList model class here like String, Integer or Students
  • you have to pass the data array list and your recyclerview adapter to RecyclerHelper constructor
  • you have to cast your Recyclerview custom adapter in Recyclerview.Adapter, while passing it in RecyclerHelper
  • you can select if you want to enable your recycler view to have dragging items or swiping items or both , you can do this by passing boolean, in touchHelper.setRecyclerItemDragEnabled(true); or touchHelper.setRecyclerItemSwipeEnabled(true);, default is false for both.
  • if you want to do some tasks like storing the list in db or sending a network request after swiping or dragging the recyclerview item then you can this with these 2 callbacks
//  callback for recyclerview item dragged from one position to other
   touchHelper.setOnDragItemListener(new OnDragListener() {
       @Override
       public void onDragItemListener(int fromPosition, int toPosition) {
           Log.d(TAG, "onDragItemListener: callback after dragging recycler view item");
       }
   });

// callback for recyclerview item swiped left or right        
   touchHelper.setOnSwipeItemListener(new OnSwipeListener() {
       @Override
       public void onSwipeItemListener() {
           Log.d(TAG, "onSwipeItemListener: callback after swiping recycler view item");
       }
   });
  • you can also use this library in fluid api like this
RecyclerHelper touchHelper = new RecyclerHelper<String>(dataArrayList, (RecyclerView.Adapter) recyclerAdapter);
touchHelper
       .setRecyclerItemDragEnabled(true)
       .setRecyclerItemSwipeEnabled(true)
       .setOnDragItemListener(new OnDragListener() {
           @Override
           public void onDragItemListener(int fromPosition, int toPosition) {
               Log.d(TAG, "onDragItemListener: callback after dragging recycler view item");
           }
       })
       .setOnSwipeItemListener(new OnSwipeListener() {
           @Override
           public void onSwipeItemListener() {
               Log.d(TAG, "onSwipeItemListener: callback after swiping recycler view item");
           }
       });

Example

  • example usage of library with model class for arraylist as Students
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
ArrayList<Students> dataArrayList = new ArrayList();
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(recyclerAdapter);

//      Library addition from here
RecyclerHelper touchHelper = new RecyclerHelper<Students>(dataArrayList, (RecyclerView.Adapter) recyclerAdapter);
touchHelper.setRecyclerItemDragEnabled(true).setOnDragItemListener(new OnDragListener() {
    @Override
    public void onDragItemListener(int fromPosition, int toPosition) {
        Log.d(TAG, "onDragItemListener: callback after dragging recycler view item");
    }
});
touchHelper.setRecyclerItemSwipeEnabled(true).setOnSwipeItemListener(new OnSwipeListener() {
    @Override
    public void onSwipeItemListener() {
        Log.d(TAG, "onSwipeItemListener: callback after swiping recycler view item");
    }
});
ItemTouchHelper itemTouchHelper = new ItemTouchHelper(touchHelper);
itemTouchHelper.attachToRecyclerView(recyclerView);

License

This software is licensed under the Apache License V2.0 A copy can be found here

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An Android Library that provide Long press drag and swipe functionality for recycler view items

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