标签: androidx

对于我正在使用的仪器测试

@RunWith(AndroidJUnit4.class)

从

import androidx.test.runner.AndroidJUnit4;

为了建立我的测试用例.现在,这条线被标记为与提示使用过时AndroidJUnit4的

import androidx.test.ext.junit.runners.AndroidJUnit4

但是,如果我尝试AndroidJUnit4从命名包导入我得到错误,ext无法解决.

您是否有任何想法,应该在gradle中包含哪些包来解决此问题？

我正在阅读关于Android的房间库.我看到他们改变包装android来androidx.我不明白.请有人解释一下.

implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"

即使这也适用于android包装.

implementation "android.arch.persistence.room:runtime:$room_version"
annotationProcessor "android.arch.persistence.room:compiler:$room_version"

• 需要什么来包装新的支持库androidx而不是android.
• 用例和影响现有项目的因素.

如何从XML 设置RecyclerView layoutManager？

    <android.support.v7.widget.RecyclerView
        app:layoutManager="???"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

我正在使用Android Studio 3.2 Beta5将我的项目迁移到AndroidX.当我重建我的应用程序时,我遇到了这些错误:

错误:[TAG]无法解析变量'$ {animal.sniffer.version}'

错误:[TAG]无法解析变量'$ {junit.version}'

完全清洁和重建不起作用!有人知道怎么修这个东西吗？请帮我.

gradle.properties

android.enableJetifier=true
android.useAndroidX=true

的build.gradle

buildscript {
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven { url 'https://maven.fabric.io/public' }
        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.0-beta05'

        classpath 'com.google.gms:google-services:4.0.1'
        classpath "io.realm:realm-gradle-plugin:5.3.1"
        classpath 'io.fabric.tools:gradle:1.25.4'
        classpath 'com.google.firebase:firebase-plugins:1.1.5'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

应用程序/的build.gradle

apply plugin: 'com.android.application'
apply plugin: 'realm-android'
apply plugin: 'io.fabric' …

什么是Jetifier？例如,要使用androidx打包的依赖项创建一个新项目,这个新项目需要将以下行添加到gradle.properties文件中:

android.enableJetifier=true

那是什么意思 - "启用jetifier"？

在一个新创建的Androidx项目中:appcompat:appcompat:1.0.0-rc01,我得到了

java.lang.ClassNotFoundException: Didn't find class 
"android.view.View$OnUnhandledKeyEventListener" on path: DexPathList

我还添加了configuration.all

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == "androidx.appcompat") {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion "1.+"
            }
        }
    }
}

这个不会影响应用程序功能或崩溃.但是,当应用程序运行时,它总是会出现此错误.请帮我解决错误.整个堆栈跟踪如下.

I/art: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$OnUnhandledKeyEventListenerWrapper>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
I/art:     at void androidx.core.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2341)
        at void androidx.appcompat.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:62)
        at java.lang.Object java.lang.reflect.Constructor.newInstance0!(java.lang.Object[]) (Constructor.java:-2)
        at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:430)
        at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:645)
        at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) …

我刚刚通过Android Studio菜单选项迁移到androidx __CODE__

我收到以下错误:

android.view.InflateException:二进制XML文件行#2:二进制XML文件行#2:错误膨胀类androidx.constraintlayout.ConstraintLayout

任何的想法？

堆栈跟踪:

2018-10-19 00:25:58.128 28131-28131/com.midounoo.midounoo E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.midounoo.midounoo, PID: 28131
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.midounoo.midounoo/com.midounoo.midounoo.Base.MainActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2724)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2789)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
        at android.os.Handler.dispatchMessage(Handler.java:110)
        at android.os.Looper.loop(Looper.java:203)
        at android.app.ActivityThread.main(ActivityThread.java:6255)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)
     Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout
     Caused by: android.view.InflateException: …

我正在使用BottomSheetBehavior原始支持库:

implementation 'com.android.support:design:27.1.1' 

当我迁移使用新androidx库时虽然BottomSheetBehavior缺少了.上述支持库的映射也不在AndroidX重构列表中,但迁移工具将其删除.

我错过了将BottomSheetBehavior包含在新androidx库中.

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.google.android.material:material:1.0.0-beta01'
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

    // ReactiveX
    implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
    implementation 'io.reactivex.rxjava2:rxkotlin:2.2.0'

    implementation 'com.android.support:design:28.1.0'

    // Android Compatability Libraries
    // Version: https://developer.android.com/topic/libraries/support-library/refactor
    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha1'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0-beta01'
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0-beta01'
    implementation 'androidx.recyclerview:recyclerview:1.0.0-beta01'

    // Android Navigation Component
    // Check here for updated version info - will move to androidx soon.
    // https://developer.android.com/topic/libraries/architecture/adding-components
    def nav_version = "1.0.0-alpha04"

    // use -ktx for Kotlin
    implementation …

我升级了android studio to 3.4 canary,现在由于以下错误我无法再成功构建:

The given artifact contains a string literal with a package reference 'android.support.v4.content' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated manually to add support for androidx.

更多细节:

Caused by: java.lang.RuntimeException: Failed to transform '.gradle/caches/modules-2/files-2.1/com.jakewharton/butterknife-compiler/9.0.0-SNAPSHOT/732f93940c74cf32a7c5ddcc5ef66e53be052352/butterknife-compiler-9.0.0-SNAPSHOT.jar' using Jetifier. Reason: The given artifact contains a string literal with a package reference 'android.support.v4.content' that cannot be safely rewritten. Libraries using reflection such as annotation processors need to be updated …

我试图使用此代码片段获取Snackbar的Textview:

snackbarView.findViewById<TextView>(android.support.design.R.id.snackbar_text)  

但Android Studio无法解析设计库.

如何才能使此代码生效？