Android Studio 1.0 and error "Library projects cannot set applicationId"
AndroidAndroid StudioAndroid Gradle-PluginAndroid LibraryAndroid Problem Overview
After updating Android Studio to 1.0, I see this error:
> Error: Library projects cannot set applicationId. applicationId is set > to 'com.super.app' in default config.
I updated the Gradle plugin as suggested but I did not understand how to fix this.
Android Solutions
Solution 1 - Android
Based on this info:
> ApplicationId in Library Projects > > You cannot use applicationId to customize the package of a library project. The package name has to be fixed in library projects (and specified as packageName in the manifest). The Gradle plugin did not enforce this restriction earlier.
Removing applicationId variable from the library's build.gradle
file should resolve the issue.
Solution 2 - Android
Thanks to Joel for his correct answer: I need to remove only 1 line from te .gradle
file:
defaultConfig {
applicationId "com.super.app" <---- remove this line
minSdkVersion 15
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
becomes
defaultConfig {
minSdkVersion 15
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
and my AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.super.app">
...
This is the right solution if you don't need to rename the package name of your app. To rename it you need to use "flavours":
android {
...
productFlavors {
flavor1 {
applicationId 'com.super.superapp'
}
}
Solution 3 - Android
Libraries can't set applicationId
and if you are working in a multi-module project and picking up flavors
from a separate file , none of the above answers will work. For a modularized app, you need the following steps -
Create a flavors.gradle
file in project root directory
ext.flavorConfig = { // 1
flavorDimensions "pricing"
productFlavors {
free {
dimension "pricing"
ext.myApplicationIdSuffix = '.free' // 2
}
paid {
dimension "pricing"
ext.myApplicationIdSuffix = '.paid'
}
}
productFlavors.all { flavor -> // 3
if (flavor.hasProperty('myApplicationIdSuffix') && isApplicationProject()) {
flavor.applicationIdSuffix = flavor.myApplicationIdSuffix
}
}
}
def isApplicationProject() { // 4
return project.android.class.simpleName.startsWith('BaseAppModuleExtension')
}
- In 1 we export a closure so that we can use it in our modules’ build.gradle files.
- In 2 we define a custom myApplicationIdSuffix property. We cannot simply have applicationIdSuffix as it is not possible to use it in library modules (build would fail if you did).
- In 3 we iterate over created flavors and set applicationIdSuffix if we detect that it’s an application module only.
- 4 is a way to check where this closure is being used.
All that’s left is to use this closure in our modules’ build.gradle
files. E.g. in application module this would look like this:
apply plugin: 'com.android.application'
apply from: "${rootProject.projectDir}/flavors.gradle"
android {
// other config...
with flavorConfig
}
If this isn't clear, you can check out this article for better understanding.
Solution 4 - Android
Just incase it helps some one :
When i imported an eclipse project into android studio,i got an error ::
"Error:Application and test application id cannot be the same"
Strange though,but i looked into the build.gradle and found the two placeholders,one for the application and other for testapplication.
I removed the testApplicationId from that as is suggested in this post and this helped me resolve the issue.
Note: This explaination is not related to the errors posted in this question,but might help someone who is getting a similar error.
Solution 5 - Android
You cannot define applicationId for your lib. But incase you want to use an identifier in your build file, which will give you, your library package name, you can define a variable for the module and then use the value as required.
eg : Library's build.gradle
apply plugin: 'com.android.library'
def libraryGroupId = 'com.google.example'
def libraryArtifactId = project.getName()
def libraryVersion = '1.1'
Also, you can use the value below as needed in your build file itself in lib.
android {
compileSdkVersion 28
defaultConfig {
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "$libraryVersion"
resValue "string", "Library", libraryGroupId"
}
}