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...ppets/src/main/java/com/example/compose/snippets/predictiveback/PredictiveBackSnippets.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| /* | ||
| * Copyright 2024 The Android Open Source Project | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
|
|
||
| package com.example.compose.snippets.predictiveback | ||
|
|
||
| import android.os.SystemClock | ||
| import androidx.activity.BackEventCompat | ||
| import androidx.activity.compose.PredictiveBackHandler | ||
| import androidx.compose.animation.EnterTransition | ||
| import androidx.compose.animation.core.Animatable | ||
| import androidx.compose.animation.scaleOut | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.material3.Surface | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableFloatStateOf | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.rememberCoroutineScope | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.geometry.Offset | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.graphics.TransformOrigin | ||
| import androidx.compose.ui.input.pointer.util.VelocityTracker | ||
| import androidx.compose.ui.platform.LocalDensity | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.navigation.NavHostController | ||
| import androidx.navigation.compose.NavHost | ||
| import androidx.navigation.compose.composable | ||
| import androidx.navigation.compose.rememberNavController | ||
| import kotlin.coroutines.cancellation.CancellationException | ||
| import kotlinx.coroutines.flow.Flow | ||
|
|
||
| @Composable | ||
| private fun PredictiveBackOverrideExit( | ||
| modifier: Modifier, | ||
| ) { | ||
| val navController = rememberNavController() | ||
|
|
||
| // [START android_compose_predictiveback_navhost] | ||
| NavHost( | ||
| navController = navController, | ||
| startDestination = "home", | ||
| popExitTransition = { | ||
| scaleOut( | ||
| targetScale = 0.9f, | ||
| transformOrigin = TransformOrigin(pivotFractionX = 0.5f, pivotFractionY = 0.5f) | ||
| ) | ||
| }, | ||
| popEnterTransition = { | ||
| EnterTransition.None | ||
| }, | ||
| modifier = modifier, | ||
| ) | ||
| // [END android_compose_predictiveback_navhost] | ||
| { | ||
| composable("home") { | ||
| HomeScreen( | ||
| modifier = modifier, | ||
| navController = navController, | ||
| ) | ||
| } | ||
| composable("settings") { | ||
| SettingsScreen( | ||
| modifier = modifier, | ||
| navController = navController, | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| private fun HomeScreen( | ||
| modifier: Modifier = Modifier, | ||
| navController: NavHostController | ||
| ) { | ||
| } | ||
|
|
||
| @Composable | ||
| private fun SettingsScreen( | ||
| modifier: Modifier = Modifier, | ||
| navController: NavHostController | ||
| ) { | ||
| } | ||
|
|
||
| @Composable | ||
| private fun PredictiveBackHandlerBasicExample() { | ||
|
|
||
| var boxScale by remember { mutableFloatStateOf(1F) } | ||
|
|
||
| Box( | ||
| modifier = Modifier | ||
| .fillMaxSize(boxScale) | ||
| .background(Color.Blue) | ||
| ) | ||
|
|
||
| // [START android_compose_predictivebackhandler_basic] | ||
| PredictiveBackHandler(true) { progress: Flow<BackEventCompat> -> | ||
| // code for gesture back started | ||
| try { | ||
| progress.collect { backEvent -> | ||
| // code for progress | ||
| boxScale = 1F - (1F * backEvent.progress) | ||
| } | ||
| // code for completion | ||
| } catch (e: CancellationException) { | ||
| // code for cancellation | ||
| boxScale = 1F | ||
| } | ||
| } | ||
| // [END android_compose_predictivebackhandler_basic] | ||
| } | ||
|
|
||
| @Composable | ||
| private fun PredictiveBackHandlerManualProgress() { | ||
|
|
||
| Surface( | ||
| modifier = Modifier.fillMaxSize() | ||
| ) { | ||
| var drawerState by remember { | ||
| mutableStateOf(DrawerState.Closed) | ||
| } | ||
|
|
||
| val translationX = remember { | ||
| Animatable(0f) | ||
| } | ||
|
|
||
| val drawerWidth = with(LocalDensity.current) { | ||
| DrawerWidth.toPx() | ||
| } | ||
| translationX.updateBounds(0f, drawerWidth) | ||
|
|
||
| val coroutineScope = rememberCoroutineScope() | ||
|
|
||
| suspend fun closeDrawer(velocity: Float = 0f) { | ||
| translationX.animateTo(targetValue = 0f, initialVelocity = velocity) | ||
| drawerState = DrawerState.Closed | ||
| } | ||
| suspend fun openDrawer(velocity: Float = 0f) { | ||
| translationX.animateTo(targetValue = drawerWidth, initialVelocity = velocity) | ||
| drawerState = DrawerState.Open | ||
| } | ||
|
|
||
| val velocityTracker = remember { | ||
| VelocityTracker() | ||
| } | ||
|
|
||
| // [START android_compose_predictivebackhandler_manualprogress] | ||
| PredictiveBackHandler(drawerState == DrawerState.Open) { progress -> | ||
| try { | ||
| progress.collect { backEvent -> | ||
| val targetSize = (drawerWidth - (drawerWidth * backEvent.progress)) | ||
| translationX.snapTo(targetSize) | ||
| velocityTracker.addPosition( | ||
| SystemClock.uptimeMillis(), | ||
| Offset(backEvent.touchX, backEvent.touchY) | ||
| ) | ||
| } | ||
| closeDrawer(velocityTracker.calculateVelocity().x) | ||
| } catch (e: CancellationException) { | ||
| openDrawer(velocityTracker.calculateVelocity().x) | ||
| } | ||
| velocityTracker.resetTracking() | ||
| } | ||
| // [END android_compose_predictivebackhandler_manualprogress] | ||
| } | ||
| } | ||
|
|
||
| private enum class DrawerState { | ||
| Open, | ||
| Closed | ||
| } | ||
|
|
||
| private val DrawerWidth = 300.dp |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * Copyright 2022 The Android Open Source Project | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
|
|
||
| package com.example.wear.snippets.tile | ||
|
|
||
| import androidx.wear.protolayout.ColorBuilders.argb | ||
| import androidx.wear.protolayout.ResourceBuilders.Resources | ||
| import androidx.wear.protolayout.TimelineBuilders.Timeline | ||
| import androidx.wear.protolayout.material.Text | ||
| import androidx.wear.protolayout.material.Typography | ||
| import androidx.wear.tiles.RequestBuilders | ||
| import androidx.wear.tiles.RequestBuilders.ResourcesRequest | ||
| import androidx.wear.tiles.TileBuilders.Tile | ||
| import androidx.wear.tiles.TileService | ||
| import com.google.common.util.concurrent.Futures | ||
|
|
||
| private const val RESOURCES_VERSION = "1" | ||
|
|
||
| // [START android_wear_tile_mytileservice] | ||
| class MyTileService : TileService() { | ||
|
|
||
| override fun onTileRequest(requestParams: RequestBuilders.TileRequest) = | ||
| Futures.immediateFuture(Tile.Builder() | ||
| .setResourcesVersion(RESOURCES_VERSION) | ||
| .setTileTimeline( | ||
| Timeline.fromLayoutElement( | ||
| Text.Builder(this, "Hello World!") | ||
| .setTypography(Typography.TYPOGRAPHY_BODY1) | ||
| .setColor(argb(0xFFFFFFFF.toInt())) | ||
| .build())) | ||
| .build()) | ||
|
|
||
| override fun onTileResourcesRequest(requestParams: ResourcesRequest) = | ||
| Futures.immediateFuture(Resources.Builder() | ||
| .setVersion(RESOURCES_VERSION) | ||
| .build() | ||
| ) | ||
|
|
||
| } | ||
| // [END android_wear_tile_mytileservice] |
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