fix: activity nullability

android/src/main/java/com/reactnativekeyboardcontroller/KeyboardControllerViewManager.kt

@@ -1,5 +1,6 @@
 package com.reactnativekeyboardcontroller
 
+import android.util.Log
 import androidx.appcompat.widget.FitWindowsLinearLayout
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsAnimationCompat
@@ -13,14 +14,22 @@ import com.facebook.react.views.view.ReactViewManager
 import com.reactnativekeyboardcontroller.events.KeyboardTransitionEvent
 
 class KeyboardControllerViewManager(reactContext: ReactApplicationContext) : ReactViewManager() {
+  private val TAG = KeyboardControllerViewManager::class.qualifiedName
   private var mReactContext = reactContext
   private var isStatusBarTranslucent = false
 
   override fun getName() = "KeyboardControllerView"
 
   override fun createViewInstance(reactContext: ThemedReactContext): ReactViewGroup {
     val view = EdgeToEdgeReactViewGroup(reactContext)
-    val window = mReactContext.currentActivity!!.window
+    val activity = mReactContext.currentActivity
+
+    if (activity == null) {
+      Log.w(TAG, "Can not setup keyboard animation listener, since `currentActivity` is null")
+      return view
+    }
+
+    val window = activity.window
     val decorView = window.decorView
 
     ViewCompat.setOnApplyWindowInsetsListener(view) { v, insets ->

android/src/main/java/com/reactnativekeyboardcontroller/StatusBarManagerCompatModule.kt

@@ -3,6 +3,7 @@ package com.reactnativekeyboardcontroller
 import android.animation.ArgbEvaluator
 import android.animation.ValueAnimator
 import android.os.Build
+import android.util.Log
 import androidx.annotation.RequiresApi
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsControllerCompat
@@ -12,6 +13,7 @@ import com.facebook.react.bridge.ReactMethod
 import com.facebook.react.bridge.UiThreadUtil
 
 class StatusBarManagerCompatModule(private val mReactContext: ReactApplicationContext) : ReactContextBaseJavaModule(mReactContext) {
+  private val TAG = StatusBarManagerCompatModule::class.qualifiedName
   private var controller: WindowInsetsControllerCompat? = null
 
   override fun getName(): String = "StatusBarManagerCompat"
@@ -30,8 +32,14 @@ class StatusBarManagerCompatModule(private val mReactContext: ReactApplicationCo
   @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
   @ReactMethod
   private fun setColor(color: Int, animated: Boolean) {
+    val activity = mReactContext.currentActivity
+    if (activity == null) {
+      Log.w(TAG, "StatusBarManagerCompatModule: Ignored status bar change, current activity is null.")
+      return
+    }
+
     UiThreadUtil.runOnUiThread {
-      val window = mReactContext.currentActivity!!.window
+      val window = activity.window
 
       if (animated) {
         val curColor: Int = window.statusBarColor
@@ -71,7 +79,13 @@ class StatusBarManagerCompatModule(private val mReactContext: ReactApplicationCo
 
   private fun getController(): WindowInsetsControllerCompat? {
     if (this.controller == null) {
-      val window = mReactContext.currentActivity!!.window
+      val activity = mReactContext.currentActivity
+      if (activity == null) {
+        Log.w(TAG, "StatusBarManagerCompatModule: can not get `WindowInsetsControllerCompat` because current activity is null.")
+        return this.controller
+      }
+
+      val window = activity.window
 
       this.controller = WindowInsetsControllerCompat(window, window.decorView)
     }

android/src/main/java/com/reactnativekeyboardcontroller/TranslateDeferringInsetsAnimationCallback.kt

@@ -31,7 +31,13 @@ import com.facebook.react.views.view.ReactViewGroup
 import com.reactnativekeyboardcontroller.events.KeyboardTransitionEvent
 import java.util.*
 
-fun toDp(px: Float, context: Context): Int = (px / context.resources.displayMetrics.density).toInt()
+fun toDp(px: Float, context: Context?): Int {
+  if (context == null) {
+    return 0
+  }
+
+  return (px / context.resources.displayMetrics.density).toInt()
+}
 
 /**
  * A [WindowInsetsAnimationCompat.Callback] which will translate/move the given view during any
@@ -112,7 +118,7 @@ class TranslateDeferringInsetsAnimationCallback(
     val navigationBar = insets?.getInsets(WindowInsetsCompat.Type.navigationBars())?.bottom ?: 0
 
     // on hide it will be negative value, so we are using max function
-    return Math.max(toDp((keyboardHeight - navigationBar).toFloat(), context!!), 0)
+    return Math.max(toDp((keyboardHeight - navigationBar).toFloat(), context), 0)
   }
 
   override fun onProgress(
@@ -132,7 +138,7 @@ class TranslateDeferringInsetsAnimationCallback(
       Insets.max(it, Insets.NONE)
     }
     val diffY = (diff.top - diff.bottom).toFloat()
-    val height = toDp(diffY, context!!)
+    val height = toDp(diffY, context)
 
     var progress = 0.0
     try {
@@ -143,7 +149,7 @@ class TranslateDeferringInsetsAnimationCallback(
     Log.i(TAG, "DiffY: $diffY $height")
 
     context
-      .getNativeModule(UIManagerModule::class.java)
+      ?.getNativeModule(UIManagerModule::class.java)
       ?.eventDispatcher
       ?.dispatchEvent(KeyboardTransitionEvent(view.id, height, progress))