1+ package com.smarttoolfactory.tutorial1_1basics.chapter9_animation
2+ 3+ import androidx.compose.animation.core.Animatable
4+ import androidx.compose.animation.core.LinearEasing
5+ import androidx.compose.animation.core.tween
6+ import androidx.compose.foundation.MutatorMutex
7+ import androidx.compose.foundation.layout.Column
8+ import androidx.compose.foundation.layout.fillMaxSize
9+ import androidx.compose.foundation.layout.fillMaxWidth
10+ import androidx.compose.foundation.layout.padding
11+ import androidx.compose.material3.Button
12+ import androidx.compose.material3.Text
13+ import androidx.compose.runtime.Composable
14+ import androidx.compose.runtime.remember
15+ import androidx.compose.runtime.rememberCoroutineScope
16+ import androidx.compose.ui.Modifier
17+ import androidx.compose.ui.tooling.preview.Preview
18+ import androidx.compose.ui.unit.dp
19+ import androidx.compose.ui.unit.sp
20+ import kotlinx.coroutines.CancellationException
21+ import kotlinx.coroutines.launch
22+ import kotlinx.coroutines.sync.Mutex
23+ import kotlinx.coroutines.sync.withLock
24+ 25+ @Preview
26+ @Composable
27+ fun CoroutinesTest () {
28+ 29+ val mutex = remember {
30+ Mutex ()
31+ }
32+ 33+ val mutatorMutex = remember {
34+ MutatorMutex ()
35+ }
36+ 37+ 38+ val scope = rememberCoroutineScope()
39+ 40+ val animatable = remember {
41+ Animatable (0f )
42+ }
43+ 44+ Column (
45+ modifier = Modifier .fillMaxSize().padding(24 .dp)
46+ ) {
47+ 48+ Text (
49+ " Value: ${animatable.value.toInt()} " = 26 .sp
50+ )
51+ 52+ Button (
53+ modifier = Modifier .fillMaxWidth(),
54+ onClick = {
55+ scope.launch {
56+ mutex.withLock {
57+ animatable.snapTo(0f )
58+ try {
59+ animatable.animateTo(
60+ targetValue = 100f ,
61+ animationSpec = tween(5000 , easing = LinearEasing )
62+ )
63+ } catch (e: CancellationException ) {
64+ println (" Exception: ${e.message} "
65+ }
66+ }
67+ }
68+ }
69+ ) {
70+ Text (" Start with Mutex"
71+ }
72+ 73+ Button (
74+ modifier = Modifier .fillMaxWidth(),
75+ onClick = {
76+ scope.launch {
77+ animatable.snapTo(0f )
78+ try {
79+ animatable.animateTo(
80+ targetValue = 100f ,
81+ animationSpec = tween(5000 , easing = LinearEasing )
82+ )
83+ } catch (e: CancellationException ) {
84+ println (" Exception: $e "
85+ }
86+ }
87+ }
88+ ) {
89+ Text (" Start"
90+ }
91+ 92+ Button (
93+ modifier = Modifier .fillMaxWidth(),
94+ onClick = {
95+ 96+ scope.launch {
97+ try {
98+ mutatorMutex.mutate {
99+ animatable.snapTo(0f )
100+ try {
101+ animatable.animateTo(
102+ targetValue = 100f ,
103+ animationSpec = tween(5000 , easing = LinearEasing )
104+ )
105+ } catch (e: CancellationException ) {
106+ println (" Exception: $e "
107+ }
108+ }
109+ }catch (e: Exception ){
110+ println (" MutatorMutexException: $e "
111+ }
112+ }
113+ }
114+ ) {
115+ Text (" Start with Mutex"
116+ }
117+ 118+ }
119+ }
0 commit comments