Lint: Use specialized state holders to avoid autoboxing (#591)

* Perf: Use specialized state holders to avoid autoboxing

The lint tool reported "AutoboxingStateCreation" warnings in multiple files.
Using the generic `mutableStateOf` for primitive types (Int, Float, Long)
can lead to performance overhead due to autoboxing.

This commit resolves these warnings by replacing `mutableStateOf`
with its specialized, more performant counterparts (`mutableIntStateOf`,
`mutableFloatStateOf`, `mutableLongStateOf`) where applicable.
This change improves performance by avoiding unnecessary object allocations
for primitive state values.

Author: cartland

compose/snippets/src/main/java/com/example/compose/snippets/components/Badges.kt

@@ -30,7 +30,7 @@ import androidx.compose.material3.Icon
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
@@ -78,7 +78,7 @@ fun BadgeExample() {
 // [START android_compose_components_badgeinteractive]
 @Composable
 fun BadgeInteractiveExample() {
-    var itemCount by remember { mutableStateOf(0) }
+    var itemCount by remember { mutableIntStateOf(0) }
 
     Column(
         verticalArrangement = Arrangement.spacedBy(16.dp)

compose/snippets/src/main/java/com/example/compose/snippets/components/ProgressIndicator.kt

@@ -29,6 +29,7 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 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
@@ -65,7 +66,7 @@ fun ProgressIndicatorExamples() {
 // [START android_compose_components_determinateindicator]
 @Composable
 fun LinearDeterminateIndicator() {
-    var currentProgress by remember { mutableStateOf(0f) }
+    var currentProgress by remember { mutableFloatStateOf(0f) }
     var loading by remember { mutableStateOf(false) }
     val scope = rememberCoroutineScope() // Create a coroutine scope
 
@@ -107,7 +108,7 @@ suspend fun loadProgress(updateProgress: (Float) -> Unit) {
 @Preview
 @Composable
 fun CircularDeterminateIndicator() {
-    var currentProgress by remember { mutableStateOf(0f) }
+    var currentProgress by remember { mutableFloatStateOf(0f) }
     var loading by remember { mutableStateOf(false) }
     val scope = rememberCoroutineScope() // Create a coroutine scope
 

compose/snippets/src/main/java/com/example/compose/snippets/glance/GlanceSnippets.kt

@@ -34,6 +34,7 @@ import androidx.compose.material3.ColorScheme
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
@@ -655,7 +656,7 @@ object CompoundButton {
         // [START android_compose_glance_buildUI12]
         var isApplesChecked by remember { mutableStateOf(false) }
         var isEnabledSwitched by remember { mutableStateOf(false) }
-        var isRadioChecked by remember { mutableStateOf(0) }
+        var isRadioChecked by remember { mutableIntStateOf(0) }
 
         CheckBox(
             checked = isApplesChecked,

compose/snippets/src/main/java/com/example/compose/snippets/interop/InteroperabilityAPIsSnippets.kt

@@ -38,7 +38,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.runtime.setValue
@@ -194,7 +194,7 @@ class ExampleFragmentMultipleComposeView : Fragment() {
 // [START android_compose_interop_apis_views_in_compose]
 @Composable
 fun CustomView() {
-    var selectedItem by remember { mutableStateOf(0) }
+    var selectedItem by remember { mutableIntStateOf(0) }
 
     // Adds view to Compose
     AndroidView(

compose/snippets/src/main/java/com/example/compose/snippets/layouts/FlowLayoutSnippets.kt

@@ -45,7 +45,7 @@ import androidx.compose.material3.FilterChip
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
@@ -472,7 +472,7 @@ fun ContextualFlowLayoutExample() {
     // [START android_compose_layouts_contextual_flow]
     val totalCount = 40
     var maxLines by remember {
-        mutableStateOf(2)
+        mutableIntStateOf(2)
     }
 
     val moreOrCollapseIndicator = @Composable { scope: ContextualFlowRowOverflowScope ->

compose/snippets/src/main/java/com/example/compose/snippets/performance/PerformanceSnippets.kt

@@ -36,6 +36,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.State
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
@@ -264,7 +265,7 @@ private object BackwardsWrite {
     // [START android_compose_performance_backwardswrite]
     @Composable
     fun BadComposable() {
-        var count by remember { mutableStateOf(0) }
+        var count by remember { mutableIntStateOf(0) }
 
         // Causes recomposition on click
         Button(onClick = { count++ }, Modifier.wrapContentSize()) {

compose/snippets/src/main/java/com/example/compose/snippets/phases/PhasesSnippets.kt

@@ -30,6 +30,7 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
@@ -178,7 +179,7 @@ private object Loop {
     fun Loop() {
         // [START android_compose_phases_loop]
         Box {
-            var imageHeightPx by remember { mutableStateOf(0) }
+            var imageHeightPx by remember { mutableIntStateOf(0) }
 
             Image(
                 painter = painterResource(R.drawable.rectangle),

compose/snippets/src/main/java/com/example/compose/snippets/sideeffects/SideEffectsSnippets.kt

@@ -36,6 +36,7 @@ import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.State
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableLongStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
@@ -59,7 +60,7 @@ fun MyScreen() {
 // [START android_compose_side_effects_launchedeffect]
     // Allow the pulse rate to be configured, so it can be sped up if the user is running
     // out of time
-    var pulseRateMs by remember { mutableStateOf(3000L) }
+    var pulseRateMs by remember { mutableLongStateOf(3000L) }
     val alpha = remember { Animatable(1f) }
     LaunchedEffect(pulseRateMs) { // Restart the effect when the pulse rate changes
         while (isActive) {

compose/snippets/src/main/java/com/example/compose/snippets/touchinput/gestures/GesturesSnippets.kt

@@ -52,6 +52,8 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
@@ -77,7 +79,7 @@ import kotlin.math.roundToInt
 // [START android_compose_touchinput_gestures_clickable]
 @Composable
 private fun ClickableSample() {
-    val count = remember { mutableStateOf(0) }
+    val count = remember { mutableIntStateOf(0) }
     // content that you want to make clickable
     Text(
         text = count.value.toString(),
@@ -89,7 +91,7 @@ private fun ClickableSample() {
 @Preview
 @Composable
 private fun WithPointerInput() {
-    val count = remember { mutableStateOf(0) }
+    val count = remember { mutableIntStateOf(0) }
     // content that you want to make clickable
     Text(
         text = count.value.toString(),
@@ -151,7 +153,7 @@ private fun ScrollBoxesSmooth() {
 @Composable
 private fun ScrollableSample() {
     // actual composable state
-    var offset by remember { mutableStateOf(0f) }
+    var offset by remember { mutableFloatStateOf(0f) }
     Box(
         Modifier
             .size(150.dp)
@@ -249,7 +251,7 @@ private object NestedScrollInterop {
 // [START android_compose_touchinput_gestures_draggable]
 @Composable
 private fun DraggableText() {
-    var offsetX by remember { mutableStateOf(0f) }
+    var offsetX by remember { mutableFloatStateOf(0f) }
     Text(
         modifier = Modifier
             .offset { IntOffset(offsetX.roundToInt(), 0) }
@@ -268,8 +270,8 @@ private fun DraggableText() {
 @Composable
 private fun DraggableTextLowLevel() {
     Box(modifier = Modifier.fillMaxSize()) {
-        var offsetX by remember { mutableStateOf(0f) }
-        var offsetY by remember { mutableStateOf(0f) }
+        var offsetX by remember { mutableFloatStateOf(0f) }
+        var offsetY by remember { mutableFloatStateOf(0f) }
 
         Box(
             Modifier
@@ -324,8 +326,8 @@ private fun SwipeableSample() {
 @Composable
 private fun TransformableSample() {
     // set up all transformation states
-    var scale by remember { mutableStateOf(1f) }
-    var rotation by remember { mutableStateOf(0f) }
+    var scale by remember { mutableFloatStateOf(1f) }
+    var rotation by remember { mutableFloatStateOf(0f) }
     var offset by remember { mutableStateOf(Offset.Zero) }
     val state = rememberTransformableState { zoomChange, offsetChange, rotationChange ->
         scale *= zoomChange