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Created StaggeredDistanceSlide transition & used where appropriate.
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app/src/main/java/io/plaidapp/ui/transitions/StaggeredDistanceSlide.java
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| /* | ||
| * 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.content.res.TypedArray; | ||
| 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.R; | ||
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| /** | ||
| * An alternative to {@link android.transition.Slide} which staggers elements by <b>distance</b> | ||
| * rather than using start delays. That is elements start from/end at a progressively increasing | ||
| * displacement such that they come together/move apart over the same duration as they enter/exit. | ||
| * This can produce more cohesive choreography. The displacement factor can be controlled by the | ||
| * {@code spread} attribute. | ||
| * <p> | ||
| * Currently only supports entering/exiting from the bottom edge. | ||
| */ | ||
| public class StaggeredDistanceSlide extends Visibility { | ||
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| private static final String PROPNAME_SCREEN_LOCATION = "android:visibility:screenLocation"; | ||
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| private int spread = 1; | ||
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| public StaggeredDistanceSlide() { } | ||
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| public StaggeredDistanceSlide(Context context, AttributeSet attrs) { | ||
| super(context, attrs); | ||
| final TypedArray a = | ||
| context.obtainStyledAttributes(attrs, R.styleable.StaggeredDistanceSlide); | ||
| spread = a.getInteger(R.styleable.StaggeredDistanceSlide_spread, spread); | ||
| a.recycle(); | ||
| } | ||
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| public int getSpread() { | ||
| return spread; | ||
| } | ||
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| public void setSpread(int spread) { | ||
| this.spread = spread; | ||
| } | ||
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| @Override | ||
| public Animator onAppear(ViewGroup sceneRoot, View view, | ||
| TransitionValues startValues, TransitionValues endValues) { | ||
| int[] position = (int[]) endValues.values.get(PROPNAME_SCREEN_LOCATION); | ||
| view.setTranslationY(sceneRoot.getHeight() + (position[1] * spread)); | ||
| return ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, 0f); | ||
| } | ||
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| @Override | ||
| public Animator onDisappear(ViewGroup sceneRoot, View view, | ||
| TransitionValues startValues, TransitionValues endValues) { | ||
| int[] position = (int[]) endValues.values.get(PROPNAME_SCREEN_LOCATION); | ||
| return ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, | ||
| sceneRoot.getHeight() + (position[1] * spread)); | ||
| } | ||
| } |
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app/src/main/res/values/attrs_staggered_distance_slide.xml
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| <?xml version="1.0" encoding="utf-8"?> | ||
| <!-- | ||
| 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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| <resources> | ||
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| <declare-styleable name="StaggeredDistanceSlide"> | ||
| <attr name="spread" format="integer" /> | ||
| </declare-styleable> | ||
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| </resources> |