Prevent the phone screen from going to sleep.
feat: implement keep awake on Android/iOS
Joseph Hale
(Jul 25, 2025, 4:05 PM -0700)
d788f88d
6966a6b8
+65
-33
+18
-12
android/src/main/java/com/keepawake/KeepAwakeModule.kt
+18
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android/src/main/java/com/keepawake/KeepAwakeModule.kt
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package com.keepawake
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import android.util.Log
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import android.view.WindowManager
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import com.facebook.react.bridge.ReactApplicationContext
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import com.facebook.react.module.annotations.ReactModule
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import android.util.Log
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@ReactModule(name = KeepAwakeModule.NAME)
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class KeepAwakeModule(reactContext: ReactApplicationContext) :
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NativeKeepAwakeSpec(reactContext) {
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private val context = reactContext
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override fun getName(): String {
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return NAME
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}
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-
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/**
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* Stops the screen from dimming or locking
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*/
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override fun activate() {
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// Implementation to keep the device awake
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Log.d(NAME, "activate")
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Log.d(NAME, "Activating KeepAwake")
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context.currentActivity?.runOnUiThread {
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context.currentActivity?.window?.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
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}
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}
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/**
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* Allows the screen to dim or lock
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*/
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override fun deactivate() {
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// Implementation to allow the device to sleep
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Log.d(NAME, "deactivate")
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}
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override fun isActive(): Boolean {
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// Implementation to check if the device is set to stay awake
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Log.d(NAME, "isActive")
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return false
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Log.d(NAME, "Deactivating KeepAwake")
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context.currentActivity?.runOnUiThread {
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context.currentActivity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
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}
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}
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companion object {
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example/src/App.tsx
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example/src/App.tsx
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import * as KeepAwake from 'react-native-keep-awake';
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import { StyleSheet, Text, View } from 'react-native';
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import { Button, Platform, StyleSheet, Text, View } from 'react-native';
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export default function App() {
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KeepAwake.activate();
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KeepAwake.deactivate();
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const result = KeepAwake.isActive();
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console.log('KeepAwake is active:', result);
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return (
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<View style={styles.container}>
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<Text>Is KeepAwake active? {result ? 'yes' : 'no'}</Text>
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<View style={styles.instructions}>
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<Text>HOW TO USE THIS DEMO</Text>
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<Text>1. Turn up your screen brightness</Text>
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<Text>
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2. Change your device display settings to dim as quickly as possible
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</Text>
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<Text>
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3. Have fun using the buttons below to control whether or not your
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device dims/sleeps quickly!
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</Text>
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{Platform.OS === 'ios' && (
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<Text>
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Note: On iOS, you may need to disconnect your device from XCode to
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see the effects
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</Text>
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)}
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</View>
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<Button
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title="Activate"
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onPress={() => {
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KeepAwake.activate();
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}}
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/>
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<Button
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title="Deactivate"
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onPress={() => {
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KeepAwake.deactivate();
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}}
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/>
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</View>
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);
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}
···
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backgroundColor: '#fff',
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flex: 1,
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alignItems: 'center',
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justifyContent: 'flex-start',
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gap: 20,
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},
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instructions: {
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margin: 20,
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alignItems: 'flex-start',
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justifyContent: 'center',
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marginBottom: 20,
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},
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});
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ios/KeepAwake.mm
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ios/KeepAwake.mm
···
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- (void)activate {
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// Implementation for activating the keep awake functionality
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NSLog(@"KeepAwake activated");
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// Stops the screen from dimming or locking
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NSLog(@"Activating KeepAwake");
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dispatch_async(dispatch_get_main_queue(), ^{
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[[UIApplication sharedApplication] setIdleTimerDisabled:YES];
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});
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}
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- (void)deactivate {
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// Implementation for deactivating the keep awake functionality
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NSLog(@"KeepAwake deactivated");
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}
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- (BOOL)isActive {
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// Implementation to check if the keep awake functionality is active
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NSLog(@"Checking if KeepAwake is active");
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return NO;
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// Allows the screen to dim or lock
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NSLog(@"Deactivating KeepAwake");
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dispatch_async(dispatch_get_main_queue(), ^{
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[[UIApplication sharedApplication] setIdleTimerDisabled:NO];
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});
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}
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- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
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src/NativeKeepAwake.ts
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src/NativeKeepAwake.ts