Android Google People Api Error: Tokenresponseexception: Missing Parameter: Code

I've used up my way. I followed the tutorial(part 1 and 2) to use Google People API in my android project. It always hit an error saying parameter code is missing in the signed apk

Solution 1:

If there aren’t issues in Google Console and code, try look into Android project setting, set minifyEnabled false in build.gradle might help.

buildTypes {
    release {
//            minifyEnabled true
//            shrinkResources true
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}