adavis

fun View.visible() {
    visibility = View.VISIBLE
}

fun View.invisible() {
    visibility = View.INVISIBLE
}

fun View.gone() {
    visibility = View.GONE

lopspower

Material Animations

[Android Transition Framework][transition-framework] can be used for three main things:

1. Animate activity layout content when transitioning from one activity to another.
2. Animate shared elements (Hero views) in transitions between activities.
3. Animate view changes within same activity.

serj-lotutovici

/*
 * Copyright (C) 2015 Jake Wharton
 *
 * 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

kaushikgopal

Bitmap batmapBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.batman);
RoundedBitmapDrawable circularBitmapDrawable = RoundedBitmapDrawableFactory.create(getResources(), batmapBitmap);

// option 1 h/t [Chris Banes](https://chris.banes.me/) 
circularBitmapDrawable.setCornerRadius(batmapBitmap.getWidth());

// option 2 h/t @csorgod in the comments
circularBitmapDrawable.setCircular(true);

chomi3

/*
Copyright 2015 Michal Pawlowski

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

gabrielemariotti

You can use this class to realize a simple sectioned RecyclerView.Adapter without changing your code.

The RecyclerView should use a LinearLayoutManager. You can use this code also with the TwoWayView with the ListLayoutManager (https://github.com/lucasr/twoway-view)

This is a porting of the class SimpleSectionedListAdapter provided by Google

Example:

felipecsl

/**
 * Copyright (c) 2013 Xcellent Creations, Inc.
 * 
 * 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: