rewrote ScrollAwareFABBehavior.java to Kotlin. Can now implement FABAnimationBase to create different FAB animations
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NoodleMage
parent
34dc85e605
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144d315e27
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package eu.kanade.tachiyomi.ui.base.fab
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import android.support.design.widget.CoordinatorLayout
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import android.support.design.widget.FloatingActionButton
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import android.support.v4.view.ViewCompat
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import android.view.View
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open class FABAnimationBase() : FloatingActionButton.Behavior()
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{
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open val mIsAnimatingOut = false;
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override fun onStartNestedScroll(coordinatorLayout: CoordinatorLayout?, child: FloatingActionButton?, directTargetChild: View?, target: View?, nestedScrollAxes: Int): Boolean {
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// Ensure we react to vertical scrolling
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return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL ||
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super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes)
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}
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override fun onNestedScroll(coordinatorLayout: CoordinatorLayout?, child: FloatingActionButton?, target: View?, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int) {
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super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed)
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if (dyConsumed > 0 && !this.mIsAnimatingOut && child!!.visibility == View.VISIBLE) {
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// User scrolled down and the FAB is currently visible -> hide the FAB
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animateOut(child)
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} else if (dyConsumed < 0 && child!!.visibility != View.VISIBLE) {
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// User scrolled up and the FAB is currently not visible -> show the FAB
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animateIn(child)
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}
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}
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open fun animateOut(button : FloatingActionButton) {}
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open fun animateIn(button : FloatingActionButton) {}
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}
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package eu.kanade.tachiyomi.ui.base.fab
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import android.content.Context
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import android.support.design.widget.FloatingActionButton
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import android.support.v4.view.animation.FastOutSlowInInterpolator
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import android.util.AttributeSet
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import android.view.View
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import android.view.animation.Animation
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import android.view.animation.AnimationUtils
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import eu.kanade.tachiyomi.R
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class FABAnimationUpDown() : FABAnimationBase()
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{
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override var mIsAnimatingOut: Boolean = false
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get() = super.mIsAnimatingOut
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private val INTERPOLATOR = FastOutSlowInInterpolator()
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/**
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* Needed to prevent NoSuchMethodException
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*/
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constructor(ctx: Context, attrs: AttributeSet) : this() { }
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override fun animateOut(button: FloatingActionButton) {
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super.animateIn(button)
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val anim = AnimationUtils.loadAnimation(button.context, R.anim.fab_hide_to_bottom)
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anim.interpolator = INTERPOLATOR
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anim.duration = 200L
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anim.setAnimationListener(object : Animation.AnimationListener {
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override fun onAnimationStart(animation: Animation) {
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mIsAnimatingOut = true
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}
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override fun onAnimationEnd(animation: Animation) {
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mIsAnimatingOut = false
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button.visibility = View.GONE
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}
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override fun onAnimationRepeat(animation: Animation) {
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}
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})
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button.startAnimation(anim)
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}
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override fun animateIn(button: FloatingActionButton) {
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super.animateOut(button)
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button.visibility = View.VISIBLE
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val anim = AnimationUtils.loadAnimation(button.context, R.anim.fab_show_from_bottom)
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anim.duration = 200L
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anim.interpolator = INTERPOLATOR
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button.startAnimation(anim)
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}
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}
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@ -1,91 +0,0 @@
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/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package eu.kanade.tachiyomi.ui.base.fab;
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import android.content.Context;
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import android.support.design.widget.CoordinatorLayout;
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import android.support.design.widget.FloatingActionButton;
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import android.support.v4.view.ViewCompat;
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import android.support.v4.view.animation.FastOutSlowInInterpolator;
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import android.util.AttributeSet;
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import android.view.View;
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import android.view.animation.Animation;
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import android.view.animation.AnimationUtils;
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import android.view.animation.Interpolator;
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import eu.kanade.tachiyomi.R;
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public class ScrollAwareFABBehavior extends FloatingActionButton.Behavior {
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private static final Interpolator INTERPOLATOR = new FastOutSlowInInterpolator();
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private boolean mIsAnimatingOut = false;
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public ScrollAwareFABBehavior(Context context, AttributeSet attrs) {
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super();
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}
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@Override
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public boolean onStartNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child,
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final View directTargetChild, final View target, final int nestedScrollAxes) {
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// Ensure we react to vertical scrolling
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return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
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|| super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
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}
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@Override
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public void onNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child,
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final View target, final int dxConsumed, final int dyConsumed,
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final int dxUnconsumed, final int dyUnconsumed) {
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super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
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if (dyConsumed > 0 && !this.mIsAnimatingOut && child.getVisibility() == View.VISIBLE) {
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// User scrolled down and the FAB is currently visible -> hide the FAB
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animateOut(child);
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} else if (dyConsumed < 0 && child.getVisibility() != View.VISIBLE) {
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// User scrolled up and the FAB is currently not visible -> show the FAB
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animateIn(child);
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}
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}
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// Same animation that FloatingActionButton.Behavior uses to hide the FAB when the AppBarLayout exits
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private void animateOut(final FloatingActionButton button) {
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Animation anim = AnimationUtils.loadAnimation(button.getContext(), R.anim.fab_hide_to_bottom);
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anim.setInterpolator(INTERPOLATOR);
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anim.setDuration(200L);
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anim.setAnimationListener(new Animation.AnimationListener() {
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public void onAnimationStart(Animation animation) {
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ScrollAwareFABBehavior.this.mIsAnimatingOut = true;
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}
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public void onAnimationEnd(Animation animation) {
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ScrollAwareFABBehavior.this.mIsAnimatingOut = false;
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button.setVisibility(View.GONE);
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}
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@Override
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public void onAnimationRepeat(final Animation animation) {
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}
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});
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button.startAnimation(anim);
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}
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// Same animation that FloatingActionButton.Behavior uses to show the FAB when the AppBarLayout enters
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private void animateIn(FloatingActionButton button) {
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button.setVisibility(View.VISIBLE);
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Animation anim = AnimationUtils.loadAnimation(button.getContext(), R.anim.fab_show_from_bottom);
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anim.setDuration(200L);
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anim.setInterpolator(INTERPOLATOR);
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button.startAnimation(anim);
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}
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}
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@ -27,6 +27,6 @@
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app:backgroundTint="@color/colorPrimary"
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app:backgroundTint="@color/colorPrimary"
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app:layout_anchor="@id/categories_list"
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app:layout_anchor="@id/categories_list"
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app:layout_anchorGravity="bottom|right|end"
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app:layout_anchorGravity="bottom|right|end"
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app:layout_behavior="eu.kanade.tachiyomi.ui.base.fab.ScrollAwareFABBehavior"/>
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app:layout_behavior="eu.kanade.tachiyomi.ui.base.fab.FABAnimationUpDown"/>
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</android.support.design.widget.CoordinatorLayout>
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</android.support.design.widget.CoordinatorLayout>
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