Nativescript: how to use different environment vars for an emulator and a real device?

Question

I'm building a project with Nativescript-Vue. I have standard a setup with Webpack.

I understand that i can pass different vars, using something like this:

tns build android --bundle --env.development --env.property=value

How can i "distinguish" between the two different platforms(emulator and a real device, they are both "development"), in order to pass different API url's?

If you want to distinguish between device and emulator, you are suppose to do that at run time not at compilation / build time. — Manoj, May 15 '19 at 06:09
https://developer.android.com/reference/android/os/Build.html — Narendra, May 15 '19 at 11:33

score 1 · Answer 1 · answered May 15 '19 at 11:38

1

You can check the Build properties from android.os.Build and see if Build.BRAND.startsWith("generic") or Build.DEVICE.startsWith("generic")) or Build.PRODUCT.contains("emulator").

You may refer to few more properties as described here.

answered May 15 '19 at 11:38

Narendra

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score 1 · Accepted Answer · answered May 15 '19 at 13:36

You can do something like this,

        if (isIOS) {
            const description = String(NSString.stringWithUTF8String(NXGetLocalArchInfo()[0].description));
            this.isSimulator = description.indexOf("x86") !== -1 || description.indexOf("i386") !== -1;
        }
        if (isAndroid) {
            this.isSimulator = android.os.Build.FINGERPRINT.startsWith("generic")
                || android.os.Build.FINGERPRINT.startsWith("unknown")
                || android.os.Build.MODEL.indexOf("google_sdk") !== -1
                || android.os.Build.MODEL.indexOf("Emulator") !== -1
                || android.os.Build.MODEL.indexOf("Android SDK built for x86") !== -1
                || android.os.Build.MANUFACTURER.indexOf("Genymotion") !== -1
                || (android.os.Build.BRAND.startsWith("generic") && android.os.Build.DEVICE.startsWith("generic"))
                || android.os.Build.PRODUCT === "google_sdk";
        }

The Android version is almost same as the one @Narendra linked in his answer but more of the NativeScript / JavaScript version.

Playground Sample

Nativescript: how to use different environment vars for an emulator and a real device?

2 Answers2