From 4b8386b7160446f47df8c8fa79cdb34a8b461862 Mon Sep 17 00:00:00 2001
From: Breval Ferrari <breval.ferrari@fish.golf>
Date: Tue, 11 Mar 2025 01:31:34 -0400
Subject: [PATCH] fix playing indicator

---
 .../java/com/example/gyromin/MainActivity.kt     | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/app/src/main/java/com/example/gyromin/MainActivity.kt b/app/src/main/java/com/example/gyromin/MainActivity.kt
index 1aa6ab4..0d1717b 100644
--- a/app/src/main/java/com/example/gyromin/MainActivity.kt
+++ b/app/src/main/java/com/example/gyromin/MainActivity.kt
@@ -13,6 +13,8 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Button
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import com.example.gyromin.ui.theme.GyrominTheme
@@ -21,7 +23,7 @@ import kotlin.math.sin
 
 class MainActivity : ComponentActivity() {
     private lateinit var Track: AudioTrack
-    private var isPlaying: Boolean = false
+    private var isPlaying: MutableState<Boolean> = mutableStateOf(false)
     private val Fs: Int = 44100
     private val buffLength: Int = AudioTrack.getMinBufferSize(Fs, 4, 2)
 
@@ -37,7 +39,7 @@ class MainActivity : ComponentActivity() {
                         horizontalAlignment = Alignment.CenterHorizontally
                     ) {
                         Button(onClick = {
-                            if (!isPlaying)
+                            if (!isPlaying.value)
                             // Create a new thread to play the audio.
 
                             // Performing intensive operations and computations on the main UI thread,
@@ -56,7 +58,7 @@ class MainActivity : ComponentActivity() {
                             Text("Play / Pause", modifier = Modifier.padding(padding))
                         }
                         Text(
-                            if (isPlaying) "Playing" else "Stopped",
+                            if (isPlaying.value) "Playing" else "Stopped",
                             modifier = Modifier.padding(padding)
                         )
                     }
@@ -85,7 +87,7 @@ class MainActivity : ComponentActivity() {
         val twopi: Double = 8.0 * atan(1.0)
         var phase = 0.0
 
-        while (isPlaying) {
+        while (isPlaying.value) {
             for (i in 0 until buffLength) {
                 frame_out[i] = (amplitude * sin(phase)).toInt().toShort()
                 phase += twopi * frequency / Fs
@@ -99,12 +101,12 @@ class MainActivity : ComponentActivity() {
 
     private fun startPlaying() {
         Track.play()
-        isPlaying = true
+        isPlaying.value = true
     }
 
     private fun stopPlaying() {
-        if (isPlaying) {
-            isPlaying = false
+        if (isPlaying.value) {
+            isPlaying.value = false
             // Stop playing the audio data and release the resources
             Track.stop()
             Track.release()