feat(android): add error handling for Kotlin version (#4018)

* feat(android): add error handling for Kotlin version mismatch

* fix: lint error

* refactor: use variables from gradle file

* chore: downgrade required Kotlin version

* refactor: check Kotlin version

* refactor: kotlin variables in build.gradle

* refactor: kotlin variables in build.gradle

* chore(doc): update document

* chore: add dependency to build.gradle for a specific version of react-native

* fix: remove additional dependency

android/build.gradle

@@ -5,6 +5,21 @@ apply plugin: 'kotlin-android'
 
 buildscript {
     def kotlin_version = rootProject.ext.has('kotlinVersion') ? rootProject.ext.get('kotlinVersion') : project.properties['RNVideo_kotlinVersion']
+    def requiredKotlinVersion = project.properties['RNVideo_kotlinVersion']
+
+    def isVersionAtLeast = { version, requiredVersion ->
+        def (v1, v2) = [version, requiredVersion].collect { it.tokenize('.')*.toInteger() }
+        for (int i = 0; i < Math.max(v1.size(), v2.size()); i++) {
+            int val1 = i < v1.size() ? v1[i] : 0
+            int val2 = i < v2.size() ? v2[i] : 0
+            if (val1 < val2) {
+                return false
+            } else if (val1 > val2) {
+                return true
+            }
+        }
+        return true
+    }
 
     repositories {
         mavenCentral()
@@ -13,9 +28,17 @@ buildscript {
     dependencies {
         classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
     }
+
+    ext {
+        if (!isVersionAtLeast(kotlin_version, requiredKotlinVersion)) {
+            throw new GradleException("Kotlin version mismatch: Project is using Kotlin version $kotlin_version, but it must be at least $requiredKotlinVersion. Please update the Kotlin version.")
+        } else {
+            println("Kotlin version is correct: $kotlin_version")
+        }
+    }
 }
 
-// This looks funny but it's necessary to keep backwards compatibility (: 
+// This looks funny but it's necessary to keep backwards compatibility (:
 def safeExtGet(prop) {
     return rootProject.ext.has(prop) ?
             rootProject.ext.get(prop) : rootProject.ext.has("RNVideo_" + prop) ?
@@ -184,7 +207,6 @@ repositories {
 }
 
 def media3_version = safeExtGet('media3Version')
-def kotlin_version = safeExtGet('kotlinVersion')
 def androidxCore_version = safeExtGet('androidxCoreVersion')
 def androidxActivity_version = safeExtGet('androidxActivityVersion')
 
@@ -239,7 +261,7 @@ dependencies {
             implementation "androidx.media3:media3-exoplayer-rtsp:$media3_version"
         }
     }
-    
+
     // For ad insertion using the Interactive Media Ads SDK with ExoPlayer
     if (ExoplayerDependencies["useExoplayerIMA"]) {
         if (media3_buildFromSource) {
@@ -280,5 +302,4 @@ dependencies {
         // Common functionality used across multiple media libraries
         implementation "androidx.media3:media3-common:$media3_version"
     }
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-}
+}

android/gradle.properties

@@ -1,4 +1,4 @@
-RNVideo_kotlinVersion=1.7.0
+RNVideo_kotlinVersion=1.8.0
 RNVideo_minSdkVersion=23
 RNVideo_targetSdkVersion=34
 RNVideo_compileSdkVersion=34

android/src/main/java/com/brentvatne/exoplayer/FullScreenPlayerView.kt

@@ -91,13 +91,12 @@ class FullScreenPlayerView(
         parent = null
     }
 
-    private fun getFullscreenIconResource(isFullscreen: Boolean): Int {
-        return if (isFullscreen) {
+    private fun getFullscreenIconResource(isFullscreen: Boolean): Int =
+        if (isFullscreen) {
             androidx.media3.ui.R.drawable.exo_icon_fullscreen_exit
         } else {
             androidx.media3.ui.R.drawable.exo_icon_fullscreen_enter
         }
-    }
 
     private fun updateFullscreenButton(playerControlView: LegacyPlayerControlView, isFullscreen: Boolean) {
         val imageButton = playerControlView.findViewById<ImageButton?>(com.brentvatne.react.R.id.exo_fullscreen)

docs/pages/installation.md

@@ -57,12 +57,14 @@ $RNVideoUseGoogleIMA=true
 
 ## Android
 
-From version >= 6.0.0, your application needs to have kotlin version >= 1.7.0
+From version >= 6.0.0, your application needs to have kotlin version >= 1.8.0
 
 ```:
 buildscript {
     ...
-    ext.kotlinVersion = '1.7.0'
+    ext.kotlinVersion = '1.8.0',
+    ext.compileSdkVersion = 34
+    ext.targetSdkVersion = 34
     ...
 }
 ```