Apk Upload Failed:your Instant App Apks Do Not Declare A Valid 'android:targetsandboxversion' Attribute In Their Androidmanifest

I'm trying to upload a version of the instant app sample code to the market with no success. I keep getting the following error: Your Instant App APKs do not declare a valid 'a

Solution 1:

What 'vyndor' says is correct. The AndroidManifest.xml file that needs to include it is the one for the "base" feature.

If you use Android Studio 3.0 Canary 4, the android:targetSandboxVersion attribute should be set for you automatically.

Solution 2:

You have 2 options:

1. Target API 25.
2. Add android:targetSandboxVersion="2" to your AndroidManifest <manifest> tag.