How to sign an Android application for publishing on playstore - unity3d

Question

when I try to publish my unity games on google developer, I always have this error:
Failed to import. You have imported an APK or Android App Bundle that
can be debugged. For security reasons, you must disable debugging
before the applicable APK or Android App Bundle can be published on
Google Play. Learn more about APKs or Android Bundle Bundle packages
for which the Debug feature has been enabled.
You have imported an APK or an Android App Bundle with a signature in debug mode. You must sign it in output version mode. Learn more about the signature.
I think there are something in maintemplate.gradle to change:
this is my mainTemplate:
// GENERATED BY UNITY. REMOVE THIS COMMENT TO PREVENT OVERWRITING WHEN EXPORTING AGAIN
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.1.0'
}
}
allprojects {
repositories {
flatDir {
dirs 'libs'
}
}
}
apply plugin: 'com.android.application'
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
**DEPS**}
android {
compileSdkVersion **APIVERSION**
buildToolsVersion '**BUILDTOOLS**'
defaultConfig {
targetSdkVersion **TARGETSDKVERSION**
applicationId '**APPLICATIONID**'
}
lintOptions {
abortOnError false
}
aaptOptions {
noCompress '.unity3d', '.ress', '.resource', '.obb'
}
**SIGN**
buildTypes {
release {
// Set minifyEnabled to true if you want to run ProGuard on your project
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
debbugable false
**SIGNCONFIG**
signingConfig signingConfigs.firstapp
}
}
}

Answer 1

Just make sure your settings are like this -