Micro-Transitions for Smooth Android To-Do List Animations
Java
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README.md

ToDoList

License Yalantis

Get it on Google Play

Live DEMO on appetize.io

Check this project on dribbble

Read how we did it on our blog

Requirements

  • Android SDK 16+

Usage

Add to your root build.gradle:

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

Add the dependency:

dependencies {
    compile 'com.github.yalantis:todolist:v1.0.1'
}

How to use this library

Add BatRecyclerView to your xml layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/gradient"
    android:orientation="vertical">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?android:attr/actionBarSize"
        android:background="@android:color/transparent"
        app:logo="@drawable/ic_menu">

        <TextView
            android:id="@+id/text_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="14 Feb, 2016"
            android:textColor="@android:color/white"
            android:textSize="20sp" />

    </android.support.v7.widget.Toolbar>

    <com.yalantis.beamazingtoday.ui.widget.BatRecyclerView
        android:id="@+id/bat_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center_horizontal"
        app:add_button_color="@drawable/selector_button_add"
        app:hint="@string/str_add_goal"
        app:radio_button_res="@drawable/selector_radio_button" />

</LinearLayout>

Create BatListener

private BatListener mListener = new BatListener() {
        @Override
        public void add(String string) {
            mGoals.add(0, new Goal(string));
            mAdapter.notify(AnimationType.ADD, 0);
        }

        @Override
        public void delete(int position) {
            mGoals.remove(position);
            mAdapter.notify(AnimationType.REMOVE, position);
        }

        @Override
        public void move(int from, int to) {
            if (from >= 0 && to >= 0) {

                //if you use 'BatItemAnimator'
                mAnimator.setPosition(to);

                BatModel model = mGoals.get(from);
                mGoals.remove(model);
                mGoals.add(to, model);
                mAdapter.notify(AnimationType.MOVE, from, to);

                if (from == 0 || to == 0) {
                    mRecyclerView.getView().scrollToPosition(Math.min(from, to));
                }
            }
        }
    };

Create BatAdapter. Pass to its constructor list of models and BatListener. Note that your model should implement BatModel interface

mAdapter = new BatAdapter(mGoals = new ArrayList<BatModel>() {{
      add(new Goal("first"));
      add(new Goal("second"));
      add(new Goal("third"));
      add(new Goal("fourth"));
      add(new Goal("fifth"));
      add(new Goal("sixth"));
      add(new Goal("seventh"));
      add(new Goal("eighth"));
      add(new Goal("ninth"));
      add(new Goal("tenth"));
}}, mListener);

mAdapter.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onClick(BatModel item, int position) {
            Toast.makeText(ExampleActivity.this, item.getText(), Toast.LENGTH_SHORT).show();
      }
});

Initialize your recycler view

mRecyclerView.getView().setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.getView().setAdapter(mAdapter);

ItemTouchHelper itemTouchHelper = new ItemTouchHelper(new BatCallback(this));
itemTouchHelper.attachToRecyclerView(mRecyclerView.getView());
mRecyclerView.setAddItemListener(mListener);

Extra

You can use BatItemAnimator to animate list items just like in our demo:

mAnimator = new BatItemAnimator();
mAdapter = new BatAdapter(mGoals = new ArrayList<BatModel>() {{
            add(new Goal("first"));
            add(new Goal("second"));
            add(new Goal("third"));
            add(new Goal("fourth"));
            add(new Goal("fifth"));
            add(new Goal("sixth"));
            add(new Goal("seventh"));
            add(new Goal("eighth"));
            add(new Goal("ninth"));
            add(new Goal("tenth"));
}}, mListener, mAnimator);
mRecyclerView.getView().setItemAnimator(mAnimator);

You need to pass the animator instance to BatRecyclerView and to BatAdapter. Also it's necessary to pass the position of the moved item in move() callback:

@Override
public void move(int from, int to) {
     if (from >= 0 && to >= 0) {
           mAnimator.setPosition(to);
           BatModel model = mGoals.get(from);
           mGoals.remove(model);
           mGoals.add(to, model);
           mAdapter.notify(AnimationType.MOVE, from, to);

           if (from == 0 || to == 0) {
                 mRecyclerView.getView().scrollToPosition(Math.min(from, to));
           }
     }
}

For more usage examples please review sample app

Changelog

Version: 1.0.1

  • Cursor fixed.
  • cursor_drawable attribute and setCursorDrawable(@DrawableRes int res) method added. Should be used instead of cursor_color attribute and setCursorColor(@ColorInt int color) method respectively

Let us know!

We’d be really happy if you could send us links to your projects where you use our component. Just send an email to github@yalantis.com And do let us know if you have any questions or suggestion regarding the animation.

P.S. We’re going to publish more awesomeness wrapped in code and a tutorial on how to make UI for iOS (Android) better than better. Stay tuned!

License

The MIT License (MIT)

Copyright © 2016 Yalantis, https://yalantis.com

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.