I'm currently trying out the new ViewBindings but i'm not getting them to work. I'm on Android Studio 3.6.1
. I just created a new project and added viewBinding.enabled = true
to my modules build.gradle
. But when I try to access the MainActivityBinding
class, it says it cannot resolve the symbol. Autocomplete doesn't find anything resembling a binding class. I also tried with a different project using Kotlin but no success there. AS4.0
doesn't help either. What do I need to do to generate the ViewBinding
classes?
My build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
viewBinding {
enabled = true
}
defaultConfig {
applicationId "com.example.myapplication"
minSdkVersion 29
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
I couldn't find my ViewBinding
files until it dawned on me that the bindings were taking their names from the XML
files ("fragment_home.xml") and not from the class ("HomeFragment.kt"). So I couldn't find them at HomeFragmentBinding
but I found them at FragmentHomeBinding.
I found it helpful to think of each ViewBinding as a helper singleton that has been created as that XML file's delegate.
(Edited to removed obsolete Gradle stuff)