Hello thanks for this backport! I have however found an issue where it isn't not playing nicely with another widget library.

I have a sample project here demonstrating the issue. If you compile and run the project and click the add payment method button the Transition will kick in displaying a new scene. If android:ids are shared between scenes then it looks as if the alpha values are not honored. Switching the Transition package names back to the framework will resolve the issue.

Here is the sample project https://drive.google.com/file/d/0B9BQRk_YVoNrdDVqVVduY3dnY0k/view?usp=sharing

And here is a link to the issue originally opened on the widget library. https://github.com/IanGClifton/AndroidFloatLabel/issues/20

I have the following transition specified in xml:

<?xml version="1.0" encoding="utf-8"?>
<changeBounds xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="4000"/>

When I use this in the following manner:

Scene temp = current;
current = other;
other = temp;
Transition myTransition = TransitionInflater.from(this).inflateTransition(R.anim.move);
TransitionManager.go(current, myTransition);

The transition partially works, though the duration isn't taken into account at all. Adding an interpolator also does nothing. In the logs I see the following:

11-11 19:50:15.184    4983-4983/com.example.gregloesch.playground I/dalvikvm﹕ Could not find method android.animation.PropertyValuesHolder.ofObject, referenced from method android.transitions.everywhere.ChangeBounds.createAnimator
11-11 19:50:15.184    4983-4983/com.example.gregloesch.playground W/dalvikvm﹕ VFY: unable to resolve static method 40: Landroid/animation/PropertyValuesHolder;.ofObject (Landroid/util/Property;Landroid/animation/TypeConverter;Landroid/graphics/Path;)Landroid/animation/PropertyValuesHolder;
11-11 19:50:15.184    4983-4983/com.example.gregloesch.playground D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x0314
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground I/dalvikvm﹕ Could not find method android.animation.ObjectAnimator.ofFloat, referenced from method android.transitions.everywhere.utils.AnimatorUtils.ofFloat
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground W/dalvikvm﹕ VFY: unable to resolve static method 28: Landroid/animation/ObjectAnimator;.ofFloat (Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;Landroid/graphics/Path;)Landroid/animation/ObjectAnimator;
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x001b
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground I/dalvikvm﹕ Could not find method android.animation.ObjectAnimator.ofInt, referenced from method android.transitions.everywhere.utils.AnimatorUtils.ofInt
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground W/dalvikvm﹕ VFY: unable to resolve static method 30: Landroid/animation/ObjectAnimator;.ofInt (Ljava/lang/Object;Landroid/util/Property;Landroid/util/Property;Landroid/graphics/Path;)Landroid/animation/ObjectAnimator;
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x001a
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground I/dalvikvm﹕ Could not find method android.animation.ObjectAnimator.ofInt, referenced from method android.transitions.everywhere.utils.AnimatorUtils.ofInt
11-11 19:50:15.192    4983-4983/com.example.gregloesch.playground W/dalvikvm﹕ VFY: unable to resolve static method 32: Landroid/animation/ObjectAnimator;.ofInt (Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;Landroid/graphics/Path;)Landroid/animation/ObjectAnimator;

When doing a simple sequential fade-in & fade out for two buttons for a moment text changes to something weird. i have tried support library too same result.

Hello,

First of all, this is an excellent library and works quite well for scene transitions.

I'm trying to apply it to fragments as enter transitions and I'm not able to use Explode() or ChangeBounds (or any transition) because of the following exception:

Any ideas please? If it doesn't support fragment transitions, do you plan on supporting it someday?

java.lang.ClassCastException: android.transitions.everywhere.ChangeBounds cannot be cast to android.transition.Transition at android.support.v4.app.FragmentTransitionCompat21.cloneTransition(FragmentTransitionCompat21.java:41) at android.support.v4.app.BackStackRecord.getEnterTransition(BackStackRecord.java:1056) at android.support.v4.app.BackStackRecord.configureTransitions(BackStackRecord.java:1138) at android.support.v4.app.BackStackRecord.beginTransition(BackStackRecord.java:1038) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:660) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489) at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:454) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5221) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

https://developer.android.com/topic/libraries/support-library/revisions.html

https://developer.android.com/reference/android/support/transition/package-summary.html

After the transition the alpha has changed from previously 56% to 100%. The ChangeText Transition should keep track of the text style and set the style values to the previous values.

I'm using this code to animate a text change.

TransitionManager.beginDelayedTransition(container, ChangeText().setChangeBehavior(ChangeText.CHANGE_BEHAVIOR_OUT_IN))

I know I should report some error kinda thing, but you're work is too awesome to make some issues for me.

I really appreciate for your work.

My question is, can I change animation settings like alpha value..? I'm using very basic one "automatic-" and I don't want that alpha setting...

Thanks in advance ::D

In ViewOverlayPreJeelybean, we find frame layout with id 'android.R.id.content' and then add the same size framelayout to add overlayView, when use Visibility Transition, the overlayView animation can be drawn out of the sceneRoot's bounds. But in JellyBeanMR2ViewGroupUtils we use sceneRoot.getOverlay(), the overlay bound is the same as sceneRoot's , thus Visibility Transition can not be drawn out of the sceneRoot's bound. I have to download the source code and change sceneRoot.getOverlay() to the top parent framelayout's overlay to achieve my PM's requirement. Any ideas ? Thanks.

Hi,

When I try to run a fade transition, and the equavalent of a 'move' transition in the same set, the fading elements always appear above the elements that move. Transition order or target view z order doesn't seem to matter at all. I've observed this behavior in both api v16 and v23.

Is there any way to enforce some kind of z-ordering for views of these transitions?

This bug occurs in android 4.1.2 only(haven't checked for lower versions). Works fine with 4.3 and above. I provide as root view (ViewGroup) getActivity().getWindow().getDecorView().getRootView() . Seems that the casting is the reason of crashing

 java.lang.ClassCastException: android.view.ViewRootImpl cannot be cast to android.view.View            at android.transitions.everywhere.utils.ViewOverlayPreJellybean.getOverlay(ViewOverlayPreJellybean.java:123)    at android.transitions.everywhere.utils.ViewGroupOverlayUtils$BaseViewGroupOverlayUtilsImpl.initializeOverlay(ViewGroupOverlayUtils.java:53)       at android.transitions.everywhere.utils.ViewGroupOverlayUtils.initializeOverlay(ViewGroupOverlayUtils.java:156)            at android.transitions.everywhere.TransitionManager.sceneChangeRunTransition(TransitionManager.java:223)            at 
android.transitions.everywhere.TransitionManager.beginDelayedTransition(TransitionManager.java:379)
            at    android.transitions.everywhere.TransitionManager.beginDelayedTransition(TransitionManager.java:340)
            at com.example.project.views.TutorialTip.animateChanges(TutorialTip.java:97)
            at com.example.project.views.TutorialTip.showOverlay(TutorialTip.java:81)
            at com.example.project.views.TutorialTip.show(TutorialTip.java:130)
            at com.example.project.tooltips.ProfileTooltipsHelper.showTooltip(ProfileTooltipsHelper.java:151)
            at com.example.project.tooltips.ProfileTooltipsHelper.showNext(ProfileTooltipsHelper.java:130)
            at com.example.project.screens.profile.FragmentProfileMe.showTips(FragmentProfileMe.java:97)
            at     com.example.project.screens.profile.FragmentProfileMe_.access$501(FragmentProfileMe_.java:26)
            at com.example.project.screens.profile.FragmentProfileMe_$2.run(FragmentProfileMe_.java:140)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4745)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)

Consider the following code:

 Transition transition = ...;

 transition.addTarget(R.id.my_view);

 ...

 transition.removeTarget(R.id.my_view);

It is apparent from the documentation that the call to Transition.removeTarget(int) should remove the view with id R.id.my_view being included in further transitions. But instead the following error will be shown:

 Caused by: java.lang.IndexOutOfBoundsException: Invalid index <some-random-int>, size is 1
        at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
        at java.util.ArrayList.remove(ArrayList.java:403)

this is because the implementation is calling ArrayList.remove(int) instead of ArrayList.remove(Object).

PS: the upstream bug is at http://b.android.com/167061 or here

Hi All, can we do slide animation without on button click? i want when the activity start then text animate in slide animation starts, without any button click. Please help.

Привет! На одном из моих проектов мне надо было анимировать смену TextView::textSize и я написал вот такой Transition. Может еще кому-то понадобится и поэтому решил создать pull request с ним (Он был написан на котлине. Но для ПР я его переписал на java)

import android.animation.Animator
import android.animation.ValueAnimator
import android.content.Context
import android.util.AttributeSet
import android.util.TypedValue
import android.view.ViewGroup
import android.widget.TextView
import androidx.transition.Transition
import androidx.transition.TransitionValues

class ChangeTextSize : Transition {

    constructor() : super()
    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)

    override fun captureStartValues(transitionValues: TransitionValues) {
        captureValues(transitionValues)
    }

    override fun captureEndValues(transitionValues: TransitionValues) {
        captureValues(transitionValues)
    }

    private fun captureValues(transitionValues: TransitionValues) {
        if (transitionValues.view is TextView) {
            transitionValues.values[PROP_NAME] = (transitionValues.view as TextView).textSize
        }
    }

    override fun createAnimator(sceneRoot: ViewGroup, startValues: TransitionValues?, endValues: TransitionValues?): Animator? {
        if (startValues == null || endValues == null || startValues.view !is TextView || endValues.view !is TextView)
            return null

        val start = startValues.values[PROP_NAME] as? Float ?: return null
        val end = endValues.values[PROP_NAME] as? Float ?: return null
        if (start == end) return null

        val view = endValues.view as TextView

        return ValueAnimator.ofFloat(start, end)
                .apply { addUpdateListener { view.setTextSize(TypedValue.COMPLEX_UNIT_PX, it.animatedValue as Float) } }
    }

    companion object {
        private const val PROP_NAME = "ChangeTextSize.textSize"
    }
}

Неплохая идея собрать библиотеку с разными кастомными Transition! Жду Вашего фид-бэка!

Доброго времени суток. Я попробовал сделать реализацию Transition между Activity на основе вашей библиотеки. Это в принципе более-менее рабочая версия. Просто хотелось бы услышать ваше мнение о такой реализации. Суть в том, что мы указываем view содержащий элементы которые нужно анимировать (если не указать берется content). У этой view мы получаем все элементы имеющие id, берем у них параметры нужные для анимации и засовываем все это в Intent. Запускаем новое Activity. На новом Activity на основе пришедших данных формируется FrameLayout. В setContentView мы вставляем этот FrameLayout, создаем сцену для Layout который по идее должен располагаться на этом Activity и вызываем ChangeScene для нее. С обратным Transition все немного сложнее. При вызове onBackPressed опять создаем FrameLayout на основе пришедших данных, затем находим все элементы из этих данных на текущем экране, берем важные для данного типа view данные (к примеру для ImageView это drawable) и вставляем в наши элементы на FrameLayout. На основе этого FrameLayout формируем сцену и вызываем changeScene.

Еще нужно добавить какой-либо listener по завершению Transition, потому что сейчас завершение Activity делается с помощью postDelayed c отсрочкой равной длительности анимации, это кривой подход и бывает Activity завершается раньше, чем закончилась анимация.