ChipsLayoutManager

This is ChipsLayoutManager - custom Recycler View's LayoutManager which moves item to the next line when no space left on the current

This layout manager could represent Google Chips material design pattern

As an android developer i see that google isn't so polite to support all our wishes, and when i faced with such common task like create spannable list but with support of CRUD animations i decided to make such stuff and share it.

Setup and usage

Installation

compile 'com.beloo.widget:ChipsLayoutManager:0.1.2'

Assuming you have installed jCenter provider:

allprojects {
    repositories {
        jcenter()
    }
}

or just import ChipsLayoutManager module to your project.

Features

Layout manager represents chips or spanned or "bubble" structure of list items and is a good replace for typical implementations of such issue based on spans in TextView or custom FlowLayouts.

supports RecyclerView's features, such as default animations while CRUD items & custom ItemAnimators, ItemDecorators, scrolling etc. wrap_content of height is supported
vertical scrolling is supported. Horizontal scrolling isn't supported. It is possible to disable vertical scrolling as well. Supported padding/margin, clipToPadding parameter of RecyclerView
supports different height and width of items
recycling items support (another advantage over TextView approach)
items gravity inside row support. For all items or only for required ones
LTR and RTL support
activity orientation change support

###Layout Directions

Left to Right	Right to Left

Usage

ChipsLayoutManager chipsLayoutManager = ChipsLayoutManager.newBuilder()
        //set vertical gravity for all items in a row. Default = Gravity.CENTER_VERTICAL
        .setChildGravity(Gravity.TOP)
        //whether RecyclerView can scroll
        .setScrollingEnabled(true)
        //set maximum views count in a particular row
        .setMaxViewsInRow(2)
        //set gravity resolver where you can determine gravity for item in position. This method have priority over previous one
        .setGravityResolver(new IChildGravityResolver() {
            @Override
            public int getItemGravity(int position) {
                return Gravity.CENTER;
            }
        })
        .build();
rv.setLayoutManager(chipsLayoutManager);

Device current direction have been chosen by default. You can manipulate with layout direction (LTR or RTL)
On Api >= 17:

<android.support.v7.widget.RecyclerView
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:layoutDirection="rtl"
       />

or programmatically (on all supported Api:):

ViewCompat.setLayoutDirection(recyclerView, ViewCompat.LAYOUT_DIRECTION_RTL);

For example look at sample application.

Support

BETA is going. I respond to your founded issues. Just create a ticket if you found something goes wrong.

Contributors

All pull requests are welcome. I've tried to make code clean & readable, so the next is up to you. I appreciate any help and contributors will be mentioned here.

Known issues

Cache of view positions is cleared on orientation change. But it wouldn't be so critical, because views are going to be properly repositioned when user will scroll to start again.

This issues are going to be fixed in next versions.

License

Copyright 2016 Beloy Oleg, Ukraine.

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.

hudafei1225/ChipsLayoutManager