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Better Dribbble enter/exit transitions.
– Remove crufty anim code & replace with shiny transitions – Better enter animation with a distance staggered slide – Animate comment entry after loading
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61 changes: 61 additions & 0 deletions
61
app/src/main/java/io/plaidapp/ui/transitions/BackgroundFade.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* | ||
| * Copyright 2016 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
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| package io.plaidapp.ui.transitions; | ||
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| import android.animation.Animator; | ||
| import android.animation.ObjectAnimator; | ||
| import android.content.Context; | ||
| import android.graphics.drawable.Drawable; | ||
| import android.support.annotation.Keep; | ||
| import android.transition.TransitionValues; | ||
| import android.transition.Visibility; | ||
| import android.util.AttributeSet; | ||
| import android.view.View; | ||
| import android.view.ViewGroup; | ||
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| import io.plaidapp.util.ViewUtils; | ||
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| /** | ||
| * A transition which fades in/out the background {@link Drawable} of a View. | ||
| */ | ||
| public class BackgroundFade extends Visibility { | ||
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| public BackgroundFade() { | ||
| super(); | ||
| } | ||
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| @Keep | ||
| public BackgroundFade(Context context, AttributeSet attrs) { | ||
| super(context, attrs); | ||
| } | ||
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| @Override | ||
| public Animator onAppear(ViewGroup sceneRoot, View view, | ||
| TransitionValues startValues, TransitionValues endValues) { | ||
| if (view == null || view.getBackground() == null) return null; | ||
| Drawable background = view.getBackground(); | ||
| background.setAlpha(0); | ||
| return ObjectAnimator.ofInt(background, ViewUtils.DRAWABLE_ALPHA, 0, 255); | ||
| } | ||
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| @Override | ||
| public Animator onDisappear(ViewGroup sceneRoot, View view, | ||
| TransitionValues startValues, TransitionValues endValues) { | ||
| if (view == null || view.getBackground() == null) return null; | ||
| return ObjectAnimator.ofInt(view.getBackground(), ViewUtils.DRAWABLE_ALPHA, 0); | ||
| } | ||
| } |
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