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Snippets for some Wear OS Tile pages (#554)
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‎wear/src/main/java/com/example/wear/snippets/tile/Animations.kt‎

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/*
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* Copyright 2025 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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* https://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 com.example.wear.snippets.tile
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import android.annotation.SuppressLint
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import androidx.annotation.OptIn
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import androidx.wear.protolayout.DeviceParametersBuilders
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import androidx.wear.protolayout.DimensionBuilders.degrees
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import androidx.wear.protolayout.DimensionBuilders.dp
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import androidx.wear.protolayout.LayoutElementBuilders
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import androidx.wear.protolayout.LayoutElementBuilders.Arc
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import androidx.wear.protolayout.LayoutElementBuilders.ArcLine
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import androidx.wear.protolayout.ModifiersBuilders
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import androidx.wear.protolayout.ModifiersBuilders.AnimatedVisibility
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import androidx.wear.protolayout.ModifiersBuilders.DefaultContentTransitions
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import androidx.wear.protolayout.ModifiersBuilders.Modifiers
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import androidx.wear.protolayout.TimelineBuilders.Timeline
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import androidx.wear.protolayout.TypeBuilders.FloatProp
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import androidx.wear.protolayout.expression.AnimationParameterBuilders.AnimationParameters
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import androidx.wear.protolayout.expression.AnimationParameterBuilders.AnimationSpec
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import androidx.wear.protolayout.expression.DynamicBuilders.DynamicFloat
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import androidx.wear.protolayout.expression.ProtoLayoutExperimental
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import androidx.wear.protolayout.material.CircularProgressIndicator
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import androidx.wear.protolayout.material.Text
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import androidx.wear.protolayout.material.layouts.EdgeContentLayout
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import androidx.wear.tiles.RequestBuilders
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import androidx.wear.tiles.TileBuilders.Tile
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import androidx.wear.tiles.TileService
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import com.google.common.util.concurrent.Futures
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import com.google.common.util.concurrent.ListenableFuture
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private const val RESOURCES_VERSION = "1"
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private const val someTileText = "Hello"
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private val deviceParameters = DeviceParametersBuilders.DeviceParameters.Builder().build()
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private fun getTileTextToShow(): String {
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return "Some text"
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}
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/** Demonstrates a sweep transition animation on a [CircularProgressIndicator]. */
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class AnimationSweepTransition : TileService() {
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// [START android_wear_tile_animations_sweep_transition]
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private var startValue = 15f
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private var endValue = 105f
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private val animationDurationInMillis = 2000L // 2 seconds
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override fun onTileRequest(requestParams: RequestBuilders.TileRequest): ListenableFuture<Tile> {
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val circularProgressIndicator =
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CircularProgressIndicator.Builder()
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.setProgress(
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FloatProp.Builder(/* static value */ 0.25f)
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.setDynamicValue(
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// Or you can use some other dynamic object, for example
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// from the platform and then at the end of expression
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// add animate().
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DynamicFloat.animate(
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startValue,
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endValue,
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AnimationSpec.Builder()
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.setAnimationParameters(
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AnimationParameters.Builder()
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.setDurationMillis(animationDurationInMillis)
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.build()
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)
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.build(),
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)
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)
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.build()
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)
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.build()
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(Timeline.fromLayoutElement(circularProgressIndicator))
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.build()
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)
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}
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// [END android_wear_tile_animations_sweep_transition]
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}
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/** Demonstrates setting the growth direction of an [Arc] and [ArcLine]. */
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@SuppressLint("RestrictedApi")
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class AnimationArcDirection : TileService() {
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// [START android_wear_tile_animations_set_arc_direction]
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public override fun onTileRequest(
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requestParams: RequestBuilders.TileRequest
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): ListenableFuture<Tile> {
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(
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Timeline.fromLayoutElement(
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EdgeContentLayout.Builder(deviceParameters)
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.setResponsiveContentInsetEnabled(true)
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.setEdgeContent(
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Arc.Builder()
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// Arc should always grow clockwise.
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.setArcDirection(LayoutElementBuilders.ARC_DIRECTION_CLOCKWISE)
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.addContent(
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ArcLine.Builder()
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// Set color, length, thickness, and more.
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// Arc should always grow clockwise.
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.setArcDirection(
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LayoutElementBuilders.ARC_DIRECTION_CLOCKWISE
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)
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.build()
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)
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.build()
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)
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.build()
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)
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)
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.build()
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)
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}
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// [END android_wear_tile_animations_set_arc_direction]
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}
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/** Demonstrates smooth fade-in and fade-out transitions. */
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class AnimationFadeTransition : TileService() {
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@OptIn(ProtoLayoutExperimental::class)
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// [START android_wear_tile_animations_fade]
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public override fun onTileRequest(
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requestParams: RequestBuilders.TileRequest
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): ListenableFuture<Tile> {
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// Assumes that you've defined a custom helper method called
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// getTileTextToShow().
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val tileText = getTileTextToShow()
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(
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Timeline.fromLayoutElement(
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Text.Builder(this, tileText)
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.setModifiers(
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Modifiers.Builder()
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.setContentUpdateAnimation(
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AnimatedVisibility.Builder()
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.setEnterTransition(DefaultContentTransitions.fadeIn())
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.setExitTransition(DefaultContentTransitions.fadeOut())
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.build()
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)
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.build()
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)
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.build()
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)
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)
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.build()
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)
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}
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// [END android_wear_tile_animations_fade]
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}
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/** Demonstrates smooth slide-in and slide-out transitions. */
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class AnimationSlideTransition : TileService() {
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@OptIn(ProtoLayoutExperimental::class)
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// [START android_wear_tile_animations_slide]
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public override fun onTileRequest(
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requestParams: RequestBuilders.TileRequest
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): ListenableFuture<Tile> {
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// Assumes that you've defined a custom helper method called
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// getTileTextToShow().
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val tileText = getTileTextToShow()
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(
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Timeline.fromLayoutElement(
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Text.Builder(this, tileText)
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.setModifiers(
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Modifiers.Builder()
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.setContentUpdateAnimation(
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AnimatedVisibility.Builder()
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.setEnterTransition(
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DefaultContentTransitions.slideIn(
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ModifiersBuilders.SLIDE_DIRECTION_LEFT_TO_RIGHT
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)
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)
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.setExitTransition(
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DefaultContentTransitions.slideOut(
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ModifiersBuilders.SLIDE_DIRECTION_LEFT_TO_RIGHT
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)
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)
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.build()
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)
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.build()
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)
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.build()
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)
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)
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.build()
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)
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}
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// [END android_wear_tile_animations_slide]
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}
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/** Demonstrates a rotation transformation. */
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class AnimationRotation : TileService() {
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override fun onTileRequest(requestParams: RequestBuilders.TileRequest): ListenableFuture<Tile> {
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// [START android_wear_tile_animations_rotation]
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(
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Timeline.fromLayoutElement(
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Text.Builder(this, someTileText)
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.setModifiers(
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Modifiers.Builder()
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.setTransformation(
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ModifiersBuilders.Transformation.Builder()
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// Set the pivot point 50 dp from the left edge
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// and 100 dp from the top edge of the screen.
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.setPivotX(dp(50f))
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.setPivotY(dp(100f))
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// Rotate the element 45 degrees clockwise.
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.setRotation(degrees(45f))
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.build()
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)
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.build()
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)
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.build()
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)
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)
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.build()
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)
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// [END android_wear_tile_animations_rotation]
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}
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}
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/** Demonstrates a scaling transformation. */
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class AnimationScaling : TileService() {
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override fun onTileRequest(requestParams: RequestBuilders.TileRequest): ListenableFuture<Tile> {
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// [START android_wear_tile_animations_scaling]
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(
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Timeline.fromLayoutElement(
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Text.Builder(this, someTileText)
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.setModifiers(
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Modifiers.Builder()
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.setTransformation(
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ModifiersBuilders.Transformation.Builder()
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// Set the pivot point 50 dp from the left edge
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// and 100 dp from the top edge of the screen.
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.setPivotX(dp(50f))
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.setPivotY(dp(100f))
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// Shrink the element by a scale factor
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// of 0.5 horizontally and 0.75 vertically.
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.setScaleX(FloatProp.Builder(0.5f).build())
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.setScaleY(
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FloatProp.Builder(0.75f).build()
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)
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.build()
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)
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.build()
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)
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.build()
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)
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)
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.build()
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)
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// [END android_wear_tile_animations_scaling]
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}
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}
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/** Demonstrates a geometric translation. */
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class AnimationGeometricTranslation : TileService() {
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override fun onTileRequest(requestParams: RequestBuilders.TileRequest): ListenableFuture<Tile> {
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// [START android_wear_tile_animations_geometric_translation]
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return Futures.immediateFuture(
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Tile.Builder()
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.setResourcesVersion(RESOURCES_VERSION)
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.setTileTimeline(
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Timeline.fromLayoutElement(
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Text.Builder(this, someTileText)
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.setModifiers(
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Modifiers.Builder()
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.setTransformation(
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ModifiersBuilders.Transformation.Builder()
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// Translate (move) the element 60 dp to the right
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// and 80 dp down.
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.setTranslationX(dp(60f))
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.setTranslationY(dp(80f))
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.build()
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)
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.build()
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)
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.build()
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)
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)
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.build()
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)
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// [END android_wear_tile_animations_geometric_translation]
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}
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}

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