add Mutex and Animatable sample

Author: SmartToolFactory

Tutorial1-1Basics/src/main/java/com/smarttoolfactory/tutorial1_1basics/chapter9_animation/MutexAnimatableSample.kt

@@ -0,0 +1,119 @@
+package com.smarttoolfactory.tutorial1_1basics.chapter9_animation
+
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.LinearEasing
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.MutatorMutex
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+
+@Preview
+@Composable
+fun CoroutinesTest() {
+
+ val mutex = remember {
+ Mutex()
+ }
+
+ val mutatorMutex = remember {
+ MutatorMutex()
+ }
+
+
+ val scope = rememberCoroutineScope()
+
+ val animatable = remember {
+ Animatable(0f)
+ }
+
+ Column(
+ modifier = Modifier.fillMaxSize().padding(24.dp)
+ ) {
+
+ Text(
+ "Value: ${animatable.value.toInt()}", fontSize = 26.sp
+ )
+
+ Button(
+ modifier = Modifier.fillMaxWidth(),
+ onClick = {
+ scope.launch {
+ mutex.withLock {
+ animatable.snapTo(0f)
+ try {
+ animatable.animateTo(
+ targetValue = 100f,
+ animationSpec = tween(5000, easing = LinearEasing)
+ )
+ } catch (e: CancellationException) {
+ println("Exception: ${e.message}")
+ }
+ }
+ }
+ }
+ ) {
+ Text("Start with Mutex")
+ }
+
+ Button(
+ modifier = Modifier.fillMaxWidth(),
+ onClick = {
+ scope.launch {
+ animatable.snapTo(0f)
+ try {
+ animatable.animateTo(
+ targetValue = 100f,
+ animationSpec = tween(5000, easing = LinearEasing)
+ )
+ } catch (e: CancellationException) {
+ println("Exception: $e")
+ }
+ }
+ }
+ ) {
+ Text("Start")
+ }
+
+ Button(
+ modifier = Modifier.fillMaxWidth(),
+ onClick = {
+
+ scope.launch {
+ try {
+ mutatorMutex.mutate {
+ animatable.snapTo(0f)
+ try {
+ animatable.animateTo(
+ targetValue = 100f,
+ animationSpec = tween(5000, easing = LinearEasing)
+ )
+ } catch (e: CancellationException) {
+ println("Exception: $e")
+ }
+ }
+ }catch (e: Exception){
+ println("MutatorMutexException: $e")
+ }
+ }
+ }
+ ) {
+ Text("Start with Mutex")
+ }
+
+ }
+}