FAQ

  • A

    The version of Java supported by the Galaxy Watch Designer (GWD) depends on the version of GWD you are installing and your operating system. GWD 1.6.2 or earlier for Windows supports only 32-bit versions of Java (version 8). GWD 1.6.x for Mac supports 64-bit Java (version 8 or 11).

    GWD Version Operating System Java SE Version1
    8 11
    32-bit (x86) 64-bit (x64)
    1.7.0 Windows 32-bit2      
    Windows 64-bit   x x
    Mac   x x
    1.6.x Windows 32-bit x    
    Windows 64-bit x    
    Mac   x x
    1.5.x and earlier Windows 32-bit x    
    Windows 64-bit x    
    Mac

    Older versions of GWD for Mac may require a specific version of Java. Please contact support for more information.

    1. Download Java SE from the Oracle Java Archive

    2. GWD 1.7.0 does not support a 32-bit OS.

  • A

    Make your Galaxy Watch face or app stand out in the Galaxy Store.

    Samsung recommends that you use portrait-orientation product images for your Galaxy Watch detail page. Users can just tap on a portrait image to open it in full-screen mode, creating an optimal phone experience and allowing your app to stand out in the Galaxy Store.

    Best practices

    • Use detailed, close-up images of the product. We suggest that you use just the product and logo (with minimal or no text) for a strong image that shows the quality of your workmanship.

    • Avoid using identical images for the icon, cover image, and screenshot. In this case, the detail page shows three duplicate images rather than three separate views of the product.

    Screenshot resolution

    We suggest the following resolution guidelines for screenshots:

    • Cover Image = 1024 x 500 pixels

    • Horizontal Screenshots = 1500 x 750 pixels

    • Vertical Screenshots = 550 x 1100 pixels

    Galaxy Store Asset Creator

    You can use the Galaxy Store Asset Creator to easily export the assets you need to publish your watch face to the Galaxy Store. To use this tool, you need:

    • Photoshop version 16.0 (CC 2015) or later

    • A basic understanding of Photoshop.

    Download the Galaxy Store Watch Asset Creator template to get started!

    Samsung Mobile Press Gallery

    Users can find and download high-quality images for Galaxy Watch and other Samsung products from the Samsung Mobile Press gallery:

    http://www.samsungmobilepress.com/resources/

    Examples

    The following screenshot shows a Galaxy Watch detail page with three portrait screenshots that show detailed aspects of the Galaxy Watch face:

    The following screenshot shows a Galaxy Watch detail page with landscape screenshots that are cut off on the sides, making them less visually appealing in the Galaxy Store:

    Find more Samsung Developer Program FAQs here.

  • A

    Users can find and download high-quality images for Galaxy Watch and other Samsung products from the Samsung Mobile Press gallery:

    http://www.samsungmobilepress.com/resources/

    Use the Galaxy Store Asset Creator to easily export the assets you need to publish your watch face to the Galaxy Store. To use this tool, you need:

    • Photoshop version 16.0 (CC 2015) or later

    • A basic understanding of Photoshop.

    Download the Galaxy Store Watch Asset Creator template to get started!

    Find more Samsung Developer Program FAQs here.

  • A

    Note: In August 2018, Samsung Galaxy Watch became Samsung Galaxy Watch. Information referring to Galaxy Watch also applies to earlier Galaxy Watch devices and apps, unless stated otherwise.

    You can use the Galaxy Watch Designer tool to design your Galaxy Watch faces.

    To download the Galaxy Watch Designer (GWD) tool, go to https://developer.samsung.com/galaxy-watch/design/watch-designer.

    To develop watch faces using the GWD tool, see the Develop Your Galaxy Watch Face tutorial.

    Find more Samsung Developer Program FAQs here.

  • A

    The distributor certificate is used for signing and verifying your app. It identifies the distributor (for example, Galaxy Store) and grants privileges to that distributor. For testing purposes, it ensures that your signed application is installed on registered devices only.


    In order to test your app on a device, the device must be registered in your personal distributor certificate. Then, you must build your app, which signs the app using your personal distributor certificate.


    To generate a personal distributor certificate and register a Samsung device,

    • Using the Galaxy Watch Designer, from the main menu bar, click Project > Distribute Certificate. For more information, see Getting Started.

    • Using Tizen Studio, from the main menu bar, click Tizen Tools > Certificate Manager (the Samsung Certificate Extension must be installed in order to properly generate a personal distributor certificate for your Samsung device). For information about the Samsung Certificate Extension, see Installing Certificate Extension. For information about the Certificate Manager, see Creating Certificates and Managing Certificate Profile.

    The personal distributor certificate is used for testing only. When you release your app for sale in the Galaxy Store, your personal distributor certificate is replaced by an official distributor certificate.


    If you upgrade a registered device (for example, you upgrade the Tizen OS), you may need to re-register the device in your personal distributor certificate. For example, if you upgrade your Galaxy Watch 3 or Sport watch to Tizen 4.0, you must re- register the device in your personal distributor certificate and rebuild your app before testing it on the device.


    You may encounter one of the following error messages if there is a problem with the distributor certificate:

    Message Cause Solution

    Account in device profile mismatch with distributor certificate.

    The device has been upgraded and the DUID (Device Unique Identifier) has changed.

    Re-register the device in your personal distributor certificate and rebuild your app.

    Launching AppManagerAppID has encountered a problem.

    The device is not found in your personal distributor certificate or your personal distributor certificate was not created properly.

    Register the device in your personal distributor certificate or re-create your personal distributor certificate and rebuild your app.

    The application installation on the device has failed due to a signature error! (error code : -12)

    You used the Tizen Studio distributor certificate when building your app, not the distributor certificate generated by the Samsung Certificate Extension.

    Select or create a distributor certificate for your Samsung device using the Certificate Manager and rebuild your app.


    For information about the Samsung Certificate Extension, see Installing Certificate Extension. For information about the Certificate Manager, see Creating Certificates and Managing Certificate Profile.

    For more information about distributor certificates, see Getting the Certificates.


    Find more Samsung Developer Program FAQs here.

  • A

    You can register up to 50 devices to one Samsung certificate.
    http://developer.samsung.com/galaxy-watch/develop/getting-certificates/create
    Developer certificate is made of Author certificate and Distributor Certificate.
    To change or add a new device to the certificate, you need to create a new Distributor Certificate again while keeping the same Author Certificate. For more information, please see the link below.
    http://developer.samsung.com/galaxy-watch/develop/getting-certificates/manage

  • A

    Linking to Galaxy App store:


    Use the format below to deeplink directly to an app’s detail page, where users can see App description, screen shots etc and then install it. To create a link, you need to know app’s fully qualified package name which is declared in Android manifest file (for android app) or config.xml / tizen manifest file (for Galaxy Watch app).

    From a Galaxy Watch App to Android app’s store detail page:


    samsungapps://ProductDetail/<android app package name>
    Example, samsungapps://ProductDetail/com.example.androidapp

    From a Galaxy Watch App to Galaxy Watch app’s store detail page:


    samsungapps://ProductDetail/<Galaxy Watch app package id>
    Example, samsungapps://ProductDetail/cNAm8uGvZ8

    From a web site:


    http://apps.samsung.com/gear/appDetail.as?appId=<app package id>
    Example, http://apps.samsung.com/gear/appDetail.as?appId=cNAm8uGvZ8

  • A

    You can use Remote App control API to launch the Android app from Galaxy Watch application. (Available from Tizen wearable platform version 2.3.2)
    http://img-developer.samsung.com/onlinedocs/gear/Extension_PG_Web/html/prog_guide/remote_ww.htm

  • A

    For example:


    function test() {
    var now = new Date();
    console.log("hour:"+now.getHours()); // Even when the time zone is changed, it remains unchanged
    }
    setInterval(function(){test();}, 1000);


    To solve the problem, use the Tizen Time APIs instead of the Date object:


    var now = tizen.time.getCurrentDateTime(); or var now = new tizen.TZDate();

    In wearable Web applications, use the following APIs to receive notifications of time changes (including time zone changes):


    void setDateTimeChangeListener (SuccessCallback changeCallback)
    void unsetDateTimeChangeListener ()


    For more information, see Time API

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