EasyAdapter Based on Android Data Binding

Create your recyclerview adapter in just 3 lines.

RecyclerView is mostly used android widgets in the Android Project, for that you have to implement an Adapter which provides the items for the view. In most cases it require the same base logic, but require you to write everything again and again.so here is sollution for it.

• Reduce Boilerplate code to create adapter and holder.
• you can filter adapter without coding much.
• You wil have load more feature with progress bar at bottom.
• includes swipe to action.
• includes View Events callbacks (ClickEvent,CheckChangeEvent)
• and many more..

Download

app > build.gradle

implementation 'com.github.mkrupal09:EasyAdapter:v2.0.5'

root > build.gradle, add jitpack.io maven url in allprojects>repositories

allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

To enable data binding

inside app build.gradle add buildFeatures block(if not) and add dataBinding flag as mentioned below

android {
    buildFeatures {
        dataBinding true
    }
}

How?

adapter = new EasyAdapter<Category, InflaterCategoryBinding>(R.layout.inflater_category) {
            @Override
            public void onBind(@NonNull InflaterCategoryBinding binding, @NonNull Category model) {
                binding.tvName.setText(model.name);
            }
        }
        

Usage

class CategoryAdapter() :EasyAdapter<Category, InflaterCategoryBinding>(R.layout.inflater_category) {
    override fun onBind(binding: InflaterCategoryBinding, model: Category) {
        binding.apply {
            tvName.text = model.name
            cbCategory.isChecked = model.isSelected
        }
    }
}

###java

     public CategoryAdapter() {
        super(R.layout.inflater_category);
    }

    @Override
    public void onBind(@NonNull InflaterCategoryBinding binding, @NonNull Category model) {
        binding.tvName.setText(model.name);
    }

1) To Handle recycler View item Events

//Override in Adapter
override fun onCreatingHolder(binding: InflaterCategoryBinding, easyHolder: EasyHolder) {
        super.onCreatingHolder(binding, easyHolder)
        binding.root.setOnClickListener(easyHolder.clickListener)
    }

adapter.setRecyclerViewItemClick { itemView, model -> 
//Perform Operation here 
}

2) Filter (Search,etc..)

adapter.performFilter(newText,filter)

val filter= object : EasyAdapter.OnFilter<Category> {
                    override fun onFilterApply(filter: Any, model: Category): Boolean {
                        return model.name.toLowerCase().contains(filter.toString().toLowerCase())
                    }

                    override fun onFilterResult(filteredList: ArrayList<Category>?) {
                        adapter.clear(false)
                        adapter.addAll(filteredList, false)
                        adapter.notifyDataSetChanged()
                    }
                }

3) Load More

adapter.setLoadMoreRes(R.layout.layout_progress)
adapter.setOnLoadMoreListener(binding.recyclerView, EasyAdapter.OnLoadMoreListener {
            if (paging != -1) {
                requestLoadMore() //Your Method
                return@OnLoadMoreListener true // Returns True if you have more data
            }
            return@OnLoadMoreListener false // Return false if you don't have more data
        })

4) Swipe Action

adapter.enableSwipeAction(binding.recyclerView)

override fun onCreatingHolder(binding: InflaterCategoryBinding, easyHolder: EasyHolder) {
        binding.llDelete.post {
            easyHolder.setEnableSwipeToDelete(binding.llCategory, 0, binding.llDelete.measuredWidth)
        }
    }
    

 <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        //Swipe Reveal Layout
        <LinearLayout
            android:id="@+id/llDelete"
            android:padding="10dp"
            android:layout_gravity="end"
            android:background="@android:color/holo_red_dark"
            android:layout_width="wrap_content"
            android:layout_height="match_parent">

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@android:drawable/ic_input_delete" />
        </LinearLayout>

        //Your container
        <LinearLayout
            android:background="@android:color/white"
            android:id="@+id/llCategory"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_vertical"
            android:orientation="horizontal"
            android:padding="5dp"/>
            
</FrameLayout>

5) Data Observe

adapter.setOnDataUpdateListener {
            if (it.size <= 0) {
                Toast.makeText(this@MainActivity, "No Data Found", Toast.LENGTH_SHORT).show()
            }
        }

Support with spinner

We've Created EasySpinner where you can use your EasyAdapter
No need to write ArrayAdapter or CustomArrayAdapter and you'll have lots of features from EasyAdapter.

  <easyadapter.dc.com.library.EasySpinner
            android:background="@drawable/rect_background"
            android:id="@+id/easyspinner"
            android:layout_width="220dp"
            android:layout_height="wrap_content"
            android:textColor="@android:color/black"
            android:drawableRight="@android:drawable/arrow_down_float"
            android:textColorHint="@android:color/black"
            android:padding="10dp"
            android:hint="Select Name" />
            

Setting adapter to EasySpinner

binding.easyspinner.setAdapter(adapter)

you can use spinner as autocomplete textview by using

 binding.easyspinner.enableAutoCompleteMode { easySpinner, text ->
            adapter.performFilter(text, filter)
}
        

---

That's it... you will have spinner adapter.

Pro Tips

Use tools attribute for previewing Layout, so you don't need to always run application

recyclerview

tools:listitem="@layout/inflater_category"
tools:itemCount="5"
tools:orientation="horizontal"
app:layoutManager="android.support.v7.widget.GridLayoutManager"

layout

tools:text="Sample Text"
tools:visibility="VISIBLE"
tools:background="@color/colorPrimary"

android predefine sample data

 tools:text="@tools:sample/cities,first_names,us_phones,lorem,lorem/random"
 tools:background="@tools:sample/backgrounds/scenic"
 tools:src="@tools/avatars"

custom sample data

To create your fake/sample data folder,
just right click on the “app” folder then “new > Sample Data directory” <br />
create new file with "filename" and write each text by new lines

file contains -

Georgia <br />
Illinois <br />
Paris <br />
London <br />

so it will randomly pick names and display in layout by

tools:text="@sample/filename" 

Changelog

[Special Thanks to]

https://github.com/alex-townsend/SwipeOpenItemTouchHelper
without this person cannot achieve swipe action in recyclerview

https://android.jlelse.eu/android-tools-attributes-listitem-sample-data-rocks-bbf49aaa9f07
for sharing knowledge of Android Tools attributes

• Buy me a Beer. 🍺

  

License

Copyright 2013 DC, Inc.

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.