Android Jetifier无法将数据绑定生成的支持库转换为AndroidX

Question

I have an Android project that has been migrated to AndroidX. At some point, I want to add a new library. This library is using a support library with data binding.

I have enabled Android Jetifier in my gradle.properties. I am using Android Gradle build tool v.3.3.2 and Gradle v.4.10.1.

Here is my gradle.properties:

org.gradle.jvmargs=-Xmx1536m
kotlin.code.style=official
android.useAndroidX=true
android.enableJetifier=true

Here is my build.gradle:

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.test"
        minSdkVersion 17
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    dataBinding {
        enabled = true
    }
}

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '28.0.0'
            }
        }

    }
}


dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation <library with AndroidX and data binding>
}

I got the following error on compile time.

Task :app:compileDebugJavaWithJavac FAILED
GallerypickerBinding.java:22: error: package android.support.constraint does not exist
    private final android.support.constraint.ConstraintLayout mboundView0;

GallerypickerBinding is the generated class from data binding of the newly added library. When I checked this file, it uses androidx.databinding.ViewDataBinding from AndroidX, but in the same file, it still uses android.support.constraint.ConstraintLayout from support library.

I expect Android Jetifier to convert all support libraries including to AndroidX, but it seems like it fails to convert the ConstraintLayout generated from data binding to AndroidX.

Answer 1

您必须在java文件和xml文件中更改包名称。

com.android.support.constraint to androidx.constraintlayout

Answer 2

For Kotlin , replace this dependency:

implementation "androidx.appcompat:appcompat:1.0.0-beta01"

with these (not sure if the second one is even required, but it is quite essential):

implementation "androidx.appcompat:appcompat:1.0.2"
implementation "androidx.core:core-ktx:1.0.1"

And for that data-binding error... either clean the project - or try to add the old one com.android.support.constraint package into the dependencies once, to make it stop complaining (only for a test, it will get it's namespace rewritten). If this not helps, please add Gallerypicker.java and it's XML into the question, for further review.

@ Suraj Singh might be right about the resource - if so, his answer should be the accepted one.