From d788f88dfe5833781686ec004ccc7e30a9c681f4 Mon Sep 17 00:00:00 2001
From: Joseph Hale <me@jhale.dev>
Date: Fri, 25 Jul 2025 22:49:57 +0000
Subject: [PATCH] feat: implement keep awake on Android/iOS

---
 ios/KeepAwake.mm | 20 ++++++++++----------
 src/NativeKeepAwake.ts | 1 -
 src/index.tsx | 4 ----
 example/src/App.tsx | 43 +++++++++++++++++++++++++++++++++++++------
 android/src/main/java/com/keepawake/KeepAwakeModule.kt | 30 ++++++++++++++++++------------
 5 file(s) changed, 65 insertion(s)(+), 33 deletion(s)(-)

diff --git a/ios/KeepAwake.mm b/ios/KeepAwake.mm
--- a/ios/KeepAwake.mm
+++ b/ios/KeepAwake.mm
@@ -5,19 +5,19 @@
 
 
 - (void)activate {
-    // Implementation for activating the keep awake functionality
-    NSLog(@"KeepAwake activated");
+    // Stops the screen from dimming or locking
+    NSLog(@"Activating KeepAwake");
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[UIApplication sharedApplication] setIdleTimerDisabled:YES];
+    });
 }
 
 - (void)deactivate {
-    // Implementation for deactivating the keep awake functionality
-    NSLog(@"KeepAwake deactivated");
-}
-
-- (BOOL)isActive {
-    // Implementation to check if the keep awake functionality is active
-    NSLog(@"Checking if KeepAwake is active");
-    return NO;
+    // Allows the screen to dim or lock
+    NSLog(@"Deactivating KeepAwake");
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[UIApplication sharedApplication] setIdleTimerDisabled:NO];
+    });
 }
 
 - (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
diff --git a/src/NativeKeepAwake.ts b/src/NativeKeepAwake.ts
--- a/src/NativeKeepAwake.ts
+++ b/src/NativeKeepAwake.ts
@@ -4,7 +4,6 @@
 export interface Spec extends TurboModule {
   activate(): void;
   deactivate(): void;
-  isActive(): boolean;
 }
 
 export default TurboModuleRegistry.getEnforcing<Spec>('KeepAwake');
diff --git a/src/index.tsx b/src/index.tsx
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -7,7 +7,3 @@
 export function deactivate(): void {
   KeepAwake.deactivate();
 }
-
-export function isActive(): boolean {
-  return KeepAwake.isActive();
-}
diff --git a/example/src/App.tsx b/example/src/App.tsx
--- a/example/src/App.tsx
+++ b/example/src/App.tsx
@@ -1,15 +1,39 @@
 import * as KeepAwake from 'react-native-keep-awake';
 
-import { StyleSheet, Text, View } from 'react-native';
+import { Button, Platform, StyleSheet, Text, View } from 'react-native';
 
 export default function App() {
-  KeepAwake.activate();
-  KeepAwake.deactivate();
-  const result = KeepAwake.isActive();
-  console.log('KeepAwake is active:', result);
   return (
     <View style={styles.container}>
-      <Text>Is KeepAwake active? {result ? 'yes' : 'no'}</Text>
+      <View style={styles.instructions}>
+        <Text>HOW TO USE THIS DEMO</Text>
+        <Text>1. Turn up your screen brightness</Text>
+        <Text>
+          2. Change your device display settings to dim as quickly as possible
+        </Text>
+        <Text>
+          3. Have fun using the buttons below to control whether or not your
+          device dims/sleeps quickly!
+        </Text>
+        {Platform.OS === 'ios' && (
+          <Text>
+            Note: On iOS, you may need to disconnect your device from XCode to
+            see the effects
+          </Text>
+        )}
+      </View>
+      <Button
+        title="Activate"
+        onPress={() => {
+          KeepAwake.activate();
+        }}
+      />
+      <Button
+        title="Deactivate"
+        onPress={() => {
+          KeepAwake.deactivate();
+        }}
+      />
     </View>
   );
 }
@@ -19,6 +43,13 @@
     backgroundColor: '#fff',
     flex: 1,
     alignItems: 'center',
+    justifyContent: 'flex-start',
+    gap: 20,
+  },
+  instructions: {
+    margin: 20,
+    alignItems: 'flex-start',
     justifyContent: 'center',
+    marginBottom: 20,
   },
 });
diff --git a/android/src/main/java/com/keepawake/KeepAwakeModule.kt b/android/src/main/java/com/keepawake/KeepAwakeModule.kt
--- a/android/src/main/java/com/keepawake/KeepAwakeModule.kt
+++ b/android/src/main/java/com/keepawake/KeepAwakeModule.kt
@@ -1,32 +1,38 @@
 package com.keepawake
 
+import android.util.Log
+import android.view.WindowManager
 import com.facebook.react.bridge.ReactApplicationContext
 import com.facebook.react.module.annotations.ReactModule
-import android.util.Log
 
 @ReactModule(name = KeepAwakeModule.NAME)
 class KeepAwakeModule(reactContext: ReactApplicationContext) :
   NativeKeepAwakeSpec(reactContext) {
 
+  private val context = reactContext
+
   override fun getName(): String {
     return NAME
   }
 
-
+  /**
+   * Stops the screen from dimming or locking
+   */
   override fun activate() {
-    // Implementation to keep the device awake
-    Log.d(NAME, "activate")
+    Log.d(NAME, "Activating KeepAwake")
+    context.currentActivity?.runOnUiThread {
+      context.currentActivity?.window?.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
   }
 
+  /**
+   * Allows the screen to dim or lock
+   */
   override fun deactivate() {
-    // Implementation to allow the device to sleep
-    Log.d(NAME, "deactivate")
-  }
-
-  override fun isActive(): Boolean {
-    // Implementation to check if the device is set to stay awake
-    Log.d(NAME, "isActive")
-    return false
+    Log.d(NAME, "Deactivating KeepAwake")
+    context.currentActivity?.runOnUiThread {
+      context.currentActivity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
   }
 
   companion object {

--
tangled.sh