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'
}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);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
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!
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.