Kotlin-android: unresolved reference databinding

Question

I have following fragment class written in Java using the new databinding library

import com.example.app.databinding.FragmentDataBdinding;

public class Data         


        

Answer 1

I found new solution, hope it will helps you.

First of all check whether plugin applied:

apply plugin: 'kotlin-kapt'

then

android {
    ...
    ...
    dataBinding {
        enabled = true
    }
    ...
    ...
}

You might have an error in dependency:

USE

kapt 'com.android.databinding:compiler:3.1.4'

instead of

compile 'com.android.databinding:compiler:3.1.4'

You can visit here for new version

Thank you.

Answer 2

Before you try to use FragmentDetailsBinding you have to make sure you converted the corresponding layout( fragment_details.xml ) to data binding layout by wrapping the whole layout in "" tag parent and move all of xmlns to layout tag then build the project and thats it

Answer 3

Try use this configuration:

In main build.gradle:

buildscript {
    ext.kotlin_version = '<kotlin-version>'
    ext.android_plugin_version = '2.2.0-alpha4'
    dependencies {
        classpath "com.android.tools.build:gradle:$android_plugin_version"
    //... rest of the content
    }
}

App build.gradle:

android {
    dataBinding {
        enabled = true
    }
}

dependencies {
    kapt "com.android.databinding:compiler:$android_plugin_version"
}

kapt {
    generateStubs = true
}

Answer 4

Try this.Andrid studio 2.0(2.1)

In build.gradle

android{
   dataBinding {
        enabled = true
    }
...
}
dependencies {
 kapt 'com.android.databinding:compiler:2.0.0-rc1'
....
}

kapt {
    generateStubs = true
}

In my project: buildToolsVersion = "23.0.3"

in top level build.gradle

dependencies {
        classpath 'com.android.tools.build:gradle:2.0.0'
    }

Answer 5

In my case I only forgot to add in layout file the header:

<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">

....

Answer 6

Add Databinding in android Project using when you have use kotlin language.

Below steps

--First you need to add the below plugin

**apply plugin: 'kotlin-kapt'**

--Second dataBinding enabled true

**dataBinding {
        enabled = true
    }**

All this point added in app.build.gradle after hit "SYNC NOW"

Lets For example you have edit profile activity then how to define binding variable in kotlin??

lateinit var buildProfileBinding: ActivityBuildProfileBinding

buildProfileBinding = getBinding()

Here,get binding is method to handle which type of binding object

protected <T extends ViewDataBinding> T getBinding() {
                return (T) binding;
            }