Optimize navigation transition (#45, #167, #178)

app/build.gradle.kts

@@ -44,6 +44,10 @@ android {
         debug {
             signingConfig = signingConfigs.getByName("defaultSignature")
         }
+        create("fastDebug") {
+            initWith(getByName("debug"))
+            isDebuggable = false
+        }
     }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_21

app/src/main/java/com/bintianqi/owndroid/MainActivity.kt

@@ -228,7 +228,7 @@ import com.bintianqi.owndroid.dpm.WorkModesScreen
 import com.bintianqi.owndroid.dpm.WorkProfile
 import com.bintianqi.owndroid.dpm.WorkProfileScreen
 import com.bintianqi.owndroid.dpm.dhizukuErrorStatus
-import com.bintianqi.owndroid.ui.Animations
+import com.bintianqi.owndroid.ui.NavTransition
 import com.bintianqi.owndroid.ui.theme.OwnDroidTheme
 import kotlinx.serialization.Serializable
 import java.util.Locale
@@ -275,7 +275,11 @@ fun Home(vm: MyViewModel, onLock: () -> Unit) {
     val focusMgr = LocalFocusManager.current
     val lifecycleOwner = LocalLifecycleOwner.current
     fun navigateUp() { navController.navigateUp() }
-    fun navigate(destination: Any) { navController.navigate(destination) }
+    fun navigate(destination: Any) {
+        navController.navigate(destination) {
+            launchSingleTop = true
+        }
+    }
     fun choosePackage() {
         navController.navigate(ApplicationsList(false))
     }
@@ -293,10 +297,10 @@ fun Home(vm: MyViewModel, onLock: () -> Unit) {
             .fillMaxSize()
             .background(colorScheme.background)
             .pointerInput(Unit) { detectTapGestures(onTap = { focusMgr.clearFocus() }) },
-        enterTransition = Animations.navHostEnterTransition,
+        enterTransition = { NavTransition.enterTransition },
-        exitTransition = Animations.navHostExitTransition,
+        exitTransition = { NavTransition.exitTransition },
-        popEnterTransition = Animations.navHostPopEnterTransition,
+        popEnterTransition = { NavTransition.popEnterTransition },
-        popExitTransition = Animations.navHostPopExitTransition
+        popExitTransition = { NavTransition.popExitTransition }
     ) {
         composable<Home> { HomeScreen(::navigate) }
         composable<WorkModes> {

app/src/main/java/com/bintianqi/owndroid/ui/Animations.kt

@@ -1,52 +0,0 @@
-package com.bintianqi.owndroid.ui
-
-import androidx.compose.animation.*
-import androidx.compose.animation.core.*
-import androidx.compose.ui.unit.IntOffset
-import androidx.navigation.NavBackStackEntry
-
-object Animations {
-    private const val INITIAL_OFFSET_VALUE = 96
-    private const val TARGET_OFFSET_VALUE = 96
-
-    private val bezier = CubicBezierEasing(0.20f, 0.85f, 0.0f, 1f)
-
-    private val tween: FiniteAnimationSpec<IntOffset> = tween(durationMillis = 550, easing = bezier, delayMillis = 50)
-
-    val navHostEnterTransition: AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition = {
-        fadeIn(tween(100, easing = LinearEasing)) +
-        slideIntoContainer(
-            animationSpec = tween,
-            towards = AnimatedContentTransitionScope.SlideDirection.End,
-            initialOffset = { INITIAL_OFFSET_VALUE }
-        )
-    }
-    
-    val navHostExitTransition: AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition = {
-        fadeOut(tween(100, easing = LinearEasing)) +
-        slideOutOfContainer(
-            animationSpec = tween,
-            towards = AnimatedContentTransitionScope.SlideDirection.Start,
-            targetOffset = { -TARGET_OFFSET_VALUE }
-        )
-    }
-    
-    val navHostPopEnterTransition: AnimatedContentTransitionScope<NavBackStackEntry>.() -> EnterTransition = {
-        fadeIn(tween(100, easing = LinearEasing)) +
-        slideIntoContainer(
-            animationSpec = tween,
-            towards = AnimatedContentTransitionScope.SlideDirection.End,
-            initialOffset = { -INITIAL_OFFSET_VALUE }
-        )
-    }
-    
-    val navHostPopExitTransition: AnimatedContentTransitionScope<NavBackStackEntry>.() -> ExitTransition = {
-        fadeOut(tween(100, easing = LinearEasing)) +
-        slideOutOfContainer(
-            animationSpec = tween,
-            towards = AnimatedContentTransitionScope.SlideDirection.Start,
-            targetOffset = { TARGET_OFFSET_VALUE }
-        )
-    }
-    
-}

app/src/main/java/com/bintianqi/owndroid/ui/NavTransition.kt

@@ -0,0 +1,45 @@
+package com.bintianqi.owndroid.ui
+
+import androidx.compose.animation.EnterTransition
+import androidx.compose.animation.ExitTransition
+import androidx.compose.animation.core.CubicBezierEasing
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.slideInHorizontally
+import androidx.compose.animation.slideOutHorizontally
+
+/**
+ * Learned from AOSP's Activity animation
+ * `frameworks/base/core/res/res/anim/activity_xxx_xxx.xml`
+ */
+object NavTransition {
+    val StandardAccelerateEasing = CubicBezierEasing(0.3F, 0F, 1F, 1F)
+
+    val enterTransition: EnterTransition = slideInHorizontally(
+        tween(450, easing = FastOutSlowInEasing),
+        { 96 }
+    ) + fadeIn(
+        tween(83, 50, LinearEasing)
+    )
+
+    val exitTransition: ExitTransition = slideOutHorizontally(
+        tween(450, easing = StandardAccelerateEasing),
+        { -96 }
+    ) + fadeOut(tween(100, 200, LinearEasing))
+
+    val popEnterTransition: EnterTransition = slideInHorizontally(
+        tween(450, easing = FastOutSlowInEasing),
+        { -96 }
+    )
+
+    val popExitTransition: ExitTransition =
+        slideOutHorizontally(
+            tween(450, easing = FastOutSlowInEasing),
+            { 96 }
+        ) + fadeOut(
+            tween(83, 35, LinearEasing)
+        )
+}