Courtesy: GitHub

Android CustomTransition Sample

This sample shows how to implement a custom Transition extending the standard Transition class.

Introduction

In order to create a custom Transition, you first need to override captureStartValues and captureEndValues. In those method, you have to extract all the relevant properties from a View. These methods are called for each of the Views in the hierarchy.

Then, you need to override [createAnimator][3] and create an Animator based on the property values you extracted. This method will also be called for each of the Views in the hierarchy. If you want to skip some Views, simply return null.

The instantiated custom Transition can be applied by passing it as the second parameter of [TransitionManager.go][4].

TransitionManager.go(mScenes[mCurrentScene], mTransition);

[3]: https://developer.android.com/reference/android/transition/Transition.html#createAnimator(android.view.ViewGroup, android.transition.TransitionValues, android.transition.TransitionValues) [4]: https://developer.android.com/reference/android/transition/TransitionManager.html#go(android.transition.Scene, android.transition.Transition)

Pre-requisites

  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository

Screenshots

Screenshot

Getting Started

This sample uses the Gradle build system. To build this project, use the "gradlew build" command or use "Import Project" in Android Studio.

Support

If you've found an error in this sample, please file an issue: https://github.com/googlesamples/android-CustomTransition

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.

License

Copyright 2017 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you 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.

compile "com.android.support:support-v4:26.1.0"

compile "com.android.support:support-v13:26.1.0"

compile "com.android.support:cardview-v7:26.1.0"

compile "com.android.support:appcompat-v7:26.1.0"

compileSdkVersion 26

minSdkVersion 19

targetSdkVersion 26

package com.example.android.customtransition

versionCode 1

versionName 1.0

MainActivity

A simple launcher activity containing a summary sample description, sample log and a custom {@link android.support.v4.app.Fragment} which can display a view.

For devices with displays with a width of 720dp or greater, the sample log is always visible, on other devices it's visibility is controlled by an item on the Action Bar.

Create a chain of targets that will receive log data