Update Kotlin version

android-wave-recorder/build.gradle

@@ -24,12 +24,12 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.5.31'
     implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.core:core-ktx:1.1.0'
+    implementation 'androidx.core:core-ktx:1.7.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.2'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.2'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.2'
 }

android-wave-recorder/src/main/java/com/github/squti/androidwaverecorder/WaveRecorder.kt

@@ -24,6 +24,7 @@
 
 package com.github.squti.androidwaverecorder
 
+import android.annotation.SuppressLint
 import android.media.AudioRecord
 import android.media.MediaRecorder
 import android.media.audiofx.NoiseSuppressor
@@ -84,6 +85,7 @@ class WaveRecorder(private var filePath: String) {
     /**
      * Starts audio recording asynchronously and writes recorded data chunks on storage.
      */
+    @SuppressLint("MissingPermission")
     fun startRecording() {
 
         if (!isAudioRecorderInitialized()) {
@@ -157,7 +159,7 @@ class WaveRecorder(private var filePath: String) {
         ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer()
             .get(shortData)
 
-        return shortData.max()?.toInt() ?: 0
+        return shortData.maxOrNull()?.toInt() ?: 0
     }
 
     /** Changes @property filePath to @param newFilePath

build.gradle

@@ -1,15 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.50'
     repositories {
         google()
         jcenter()
 
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:7.1.3'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.31'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }

sample/build.gradle

@@ -24,7 +24,7 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.5.31'
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.core:core-ktx:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'