react-native-gpgs

React Native Google Play Games Services Docs

React Native Google Play Games Services (react-native-gpgs) is a wrapper around the native Google Play Games Services API for Android.

NOTE: This library in for react native and only supports the android platform.

Pre-installation requirements

This documentation assumes that you've already completed all the requirements of the setup guide found here.

It is important that you follow and complete all the listed requirements or the library will not work.

After you've completed the guide:

1. Create a value resource file named id.xml in the res/values folder
2. Paste your application id in the created file. See example.

<string name="app_id">YOUR_APP_ID</string>

1. Paste the following in your within the <application> tag in the AndroidManifest.xml file

...
 <application>
 ...
+ <meta-data android:name="com.google.android.gms.games.APP_ID" android:value="@string/app_id"/>
 
+ <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version"/>
 </application>
 ...

Note: if you open android studio at this point, you may get an error saying that it cannot resolve @integer/google_play_services_version. This error should be resolved after you have completed the installation and linking steps below.

Installation

1. Install the package from npm [sudo] npm install react-native-gpgs --save

2. Link the library react-native link react-native-gpgs

3. Edit top-level build.gradle (Project module)

allprojects {
    ...
    repositories {
        ... 
        // Add these lines of code to your android/build.gradle file
+		maven {  
+			url "https://maven.google.com"  
+		}
        ...
    }
    ...
}

API Overview

Module	Method	Return	Since
RNGPGSAuth	onAuthStateChanged	*event handler*	1.0.0
RNGPGSAuth	signInPlayerInBackground	Promise	1.0.0
RNGPGSAuth	signInPlayerWithUI	Promise	1.0.0
RNGPGSAuth	signOutPlayer	Promise	1.0.0
RNGPGSPlayer	getCurrentPlayerInfo	Promise(playerInfoObj)	1.0.0
RNGPGSLeaderboard	showAllLeaderboardsUI	Promise	1.0.0
RNGPGSLeaderboard	showLeaderboardUI	Promise	1.0.0
RNGPGSLeaderboard	showLeaderboardUIFilteredTimeSpan	Promise	1.0.0
RNGPGSLeaderboard	submitScore	Promise({ isNewBest })	1.0.0
RNGPGSAchievement	showAchievementsUI	Promise	1.0.0
RNGPGSAchievement	incrementAchievement	Promise({ isUnlocked })	1.0.0
RNGPGSAchievement	unlockAchievement	Promise	1.0.0
RNGPGSAchievement	revealHiddenAchievement	Promise	1.0.0

Auth Module (RNGPGSAuth)

To use methods in the auth module, import RNGPGSAuth:

import { RNGPGSAuth } from 'react-native-gpgs' 

onAuthStateChanged(callback)

This method triggers the callback function whenever the user's authentication state has changed (signed in or signed out).

Important: It is important to implement this method because the sign in and sign out methods do not return the user's authentication state.

Parameters

Name	Type	Default	Required	Description
callback	function(isSignedIn)	-	Yes	Param: isSignedIn (boolean) - whether or not the user is signed in.

Return *event handler*

Example

...
 
componentWillMount() {
    this.authListener = RNGPGSAuth.onAuthStateChanged(isSignedIn => {
        this.setState({
            isSignedIn:  isSignedIn
        });
    })
}
 
componentWillUnmount() {
    // Remove listener
    if (this.authListener != null) {
        this.authListener.remove();
    }
}
...

signInPlayerInBackground(triggerUI)

Attempts to silently sign in the player/user in the background. If triggerUI is true, then if the background sign in failed, then the signin UI will be presented to the user.

Parameters

Name	Type	Default	Required	Description
triggerUI	boolean	-	Yes	Whether or not to display the sign-in UI in the event that the silent sign in failed.

Return

Promise<null>

Returns a promise that is fulfilled after the sign-in flow is is complete or dismissed by the user. Triggers callback provided to the onAuthStateChanged method.

Example

RNGPGSAuth.signInPlayerInBackground(false).catch(err => {
    console.log(err);
})

signInPlayerWithUI()

Displays the interactive sign in UI to the user.

Return

Promise<null>

Returns a promise that is fullfilled after the sign-in flow is is complete or dismissed by the user. Triggers callback provided to the onAuthStateChanged(callback) method.

Example

RNGPGSAuth.signInPlayerWithUI().catch(err => {
    console.log(err);
})

signOutPlayer()

Attemps to sign out the current player/user.

Return

Promise<null>

Returns a promise that is fullfilled after the sign-out process is complete. Triggers callback provided to the onAuthStateChanged(callback) method.

Example

RNGPGSAuth.signOutPlayer().catch(err => {
    console.log(err);
})

Player Module (RNGPGSPlayer)

To use methods in the auth module, import RNGPGSPlayer:

import { RNGPGSPlayer } from 'react-native-gpgs' 

getCurrentPlayerInfo()

This method returns information about the user that is currently login in.

Return

Promise(playerInfoObj)

Name	Type	Description
playerInfoObj	object	{ title, lastTimePlayed, playerId, displayName }

Leaderboard Module (RNGPGSLeaderboard)

To use methods in the auth module, import RNGPGSLeaderboard:

import { RNGPGSLeaderboard } from 'react-native-gpgs'

showAllLeaderboardsUI()

Displays a leaderboard UI overlay containing all the leaderboards associated with the application/game.

Return

Promise<null>

Returns a promise that is fullfilled when the user exits the UI. Triggers callback provided to the onAuthStateChanged(callback) method if the user signs out in the UI.

Example

RNGPGSLeaderboard.showAllLeaderboardsUI().catch(err => {
    alert("Failed to load UI.");
    console.log(err);
})

showLeaderboardUI(boardId)

Displays the leaderboards UI overlay to the user.

Parameters

Name	Type	Default	Required	Description
boardId	string	-	Yes	The id of the specific leaderboard

Return

Promise<null>

Returns a promise that is fullfilled when the user exits the UI. Triggers callback provided to the onAuthStateChanged(callback) method if the user signs out in the UI.

Example

RNGPGSLeaderboard.showLeaderboardUI('board-id-here').catch(err => {
    alert("Failed to load UI.");
    console.log(err);
})

showLeaderboardUIFilteredTimeSpan(boardId, timeSpan)

Displays the leaderboards UI overlay to the user.

Parameters

Name	Type	Default	Required	Description
boardId	string	-	Yes	The id of the specific leaderboard
timeSpan	RNGPGSConstants	-	Yes	Use one of the provided constants: TIME_SPAN_DAILY, TIME_SPAN_WEEKLY, TIME_SPAN_ALL_TIME

Return

Promise<null>

Returns a promise that is fullfilled when the user exits the UI. Triggers callback provided to the onAuthStateChanged(callback) method if the user signs out in the UI.

Example

RNGPGSLeaderboard.showLeaderboardUIFilteredTimeSpan('board-id-here', RNGPGSConstants.TIME_SPAN_WEEKLY).catch(err => {
    console.log(err);
})

submitScore(boardId, score, scoreTag)

Submits the specified score for the current user to the specified leaderboard (boardId).

Parameters

Name	Type	Default	Required	Description
boardId	string	-	Yes	The id of the specific leaderboard
score	integer	-	Yes	The score
scoreTag	string	-	no (nullable)	Pass 'null' to ignore. See google's documentation for more details on scoreTags.

Return

Promise({ isNewBest })

Name	Type	Description
isNewBest	boolean	whether or not the score is a new best

Example

RNGPGSLeaderboard.submitScore('board-id-here', 200, null).then(mess => {
    if(mess.isNewBest) {
        alert("You set a new best score.");
    }
}).catch(err => {
    console.log(err);
})

Achievements Module (RNGPGSAchievement)

To use methods in the achievements module, import RNGPGSAchievement:

import { RNGPGSAchievement } from 'react-native-gpgs'

showAchievementsUI()

Displays all the achievements associated with the application/game.

Return

Promise<null>

Example

RNGPGSAchievement.showAchievementsUI().catch(err => {
    console.log(err);
})

incrementAchievement(id, numSteps)

Increments the specific achievement by the specified number of steps for the current player/user.

Parameters

Name	Type	Default	Required	Description
id	string	-	Yes	The ID of the achievement to increment.
numSteps	integer	-	Yes	The number of steps to increment by. Must be greater than 0.

Return

Promise({ isUnlocked })

Name	Type	Description
isUnlocked	boolean	indicates whether the achievement is now unlocked

Example

RNGPGSAchievement.incrementAchievement('achievement-id-here', 2).then(mess => {
    if(mess.isUnlocked) {
        alert("New Achievement unlocked!");
    }
}).catch(err => {
    console.log(err);
})

unlockAchievement(id)

Unlocks an achievement for the currently signed in player. If the achievement is hidden this will reveal it to the player.

Parameters

Name	Type	Default	Required	Description
id	string	-	Yes	The ID of the achievement to unlock.

Return

Promise<null>

Example

RNGPGSAchievement.unlockAchievement('achievement-id-here').catch(err => {
    console.log(err);
})

revealHiddenAchievement(id)

Reveals a hidden achievement to the currently signed-in player. If the achievement has already been unlocked, this will have no effect.

Parameters

Name	Type	Default	Required	Description
id	string	-	Yes	The ID of the hidden achievement to reveal.

Return

Promise<null>

Example

RNGPGSAchievement.revealHiddenAchievement('achievement-id-here').catch(err => {
    console.log(err);
})