React Native module for listen global key event

Introdution

import GlobalKeyEvent from 'react-native-global-keyevent'

GlobalKeyEvent.addKeyDownListener((evt) => {
  console.log('---key down---')
  console.log('code:', evt.keyCode)
  console.log('key:', evt.pressedKey)
  console.log('flag shift:', evt.shift)
})
GlobalKeyEvent.addKeyUpListener((evt) => {
  console.log('---key up---')
  console.log('code:', evt.keyCode)
  console.log('key:', evt.pressedKey)
  console.log('flag shift:', evt.shift)
})

Example

Installation

• Add dependency with yarn add react-native-global-keyevent
• You may need to run react-native link react-native-global-keyevent or autolinking.

iOS / tvOS

This module required to replace root view controller:

--- AppDelegate.m	2022-02-09 07:32:28.000000000 +0800
+++ AppDelegate.m	2022-02-09 07:31:53.000000000 +0800
@@ -3,6 +3,7 @@
 #import <React/RCTBridge.h>
 #import <React/RCTBundleURLProvider.h>
 #import <React/RCTRootView.h>
+#import "RNGlobalKeyEventViewController.h"
 
 #ifdef FB_SONARKIT_ENABLED
 #import <FlipperKit/FlipperClient.h>
@@ -43,7 +44,7 @@
   }
 
   self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
-  UIViewController *rootViewController = [UIViewController new];
+  UIViewController *rootViewController = [RNGlobalKeyEventViewController new];
   rootViewController.view = rootView;
   self.window.rootViewController = rootViewController;
   [self.window makeKeyAndVisible];

If you have own custom root view controller, you can follow ios/RNGlobalKeyEventViewController.m.

It's also supported iOS / tvOS version less than 13.4, but it only supports keyUp event.

Android

This module required to listen key event on MainActivity:

--- MainActivity.java 2022-02-03 09:01:32.000000000 +0800
+++ MainActivity.java 2022-02-03 09:01:32.000000000 +0800
@@ -1,6 +1,8 @@
 package com.example;
 
 import com.facebook.react.ReactActivity;
+import android.view.KeyEvent;
+import com.globalkeyevent.GlobalKeyEventModule;
 
 public class MainActivity extends ReactActivity {
 
@@ -12,4 +14,18 @@
   protected String getMainComponentName() {
     return "example";
   }
+
+  @Override
+  public boolean onKeyDown(int keyCode, KeyEvent event) {
+    GlobalKeyEventModule instance = GlobalKeyEventModule.getInstance();
+    if (instance != null) instance.onKeyDownEvent(keyCode, event);
+    return super.onKeyDown(keyCode, event);
+  }
+
+  @Override
+  public boolean onKeyUp(int keyCode, KeyEvent event) {
+    GlobalKeyEventModule instance = GlobalKeyEventModule.getInstance();
+    if (instance != null) instance.onKeyUpEvent(keyCode, event);
+    return super.onKeyUp(keyCode, event);
+  }
 }

Usage

• GlobalKeyEvent.addKeyDownListener((event: GlobalKeyEvent) => {}): EmitterSubscription
• GlobalKeyEvent.addKeyUpListener((event: GlobalKeyEvent) => {}): EmitterSubscription
• EmitterSubscription reference

type GlobalKeyEvent = {
  pressedKey: string,
  keyCode: number,
  shift: boolean,
  control: boolean,
  alt: boolean,
  meta: boolean,
  capsLock: boolean,
  fn: boolean,
  numericPad: boolean,
}

GlobalKeyEvent

Prop	Type	Note
pressedKey	String	Pressed key
keyCode	Number	[Not supported on iOS] Key code
shift	Boolean	Is Shift key hold?
control	Boolean	Is Ctrl (iOS: Control) key hold?
alt	Boolean	Is Alt (iOS: Option) key hold?
meta	Boolean	Is META (iOS: Command) key hold?
capsLock	Boolean	Is Caps Lock enabled?
fn	Boolean	[Android only] Is Fn key hold?
numericPad	Boolean	[iOS only] Is user pressed a key located on the numeric keypad?

Credits

• react-native-keyevent used to be our solution before this.

License

MIT

---

Built and maintained by BRICKS.