将Android支持库从版本27.0.1更新到27.0.2
的问题有点问题：将版本从27.0.1更改为27.0.2后，我的CardView会出现问题，因为找不到某些CardView属性。
To＆＃34;解决＆＃34;这以最简单的方式：回到版本27.0.1
但我宁愿以另一种方式解决它，所以我可以升级到版本27.0.2
所以我的问题是：
为什么我收到这些错误，我该如何解决？
这是Lint中的一种错误，建议更新的支持库，但它们仍然不可用？最后一个问题是因为如果我查看SDK工具（Android Studio 3.0），那么我看到Android SDK平台和PlatPlatform-Tools的最实际版本是27.0.1。
低于我的具体情况。
1. **Usage in XML layout file:**
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardBackgroundColor="?attr/myCardBackgroundColor"
card_view:cardCornerRadius="5dp"
card_view:contentPadding="10dp">
2 .**build.gradle (Project zzz):**
allprojects {
repositories {
jcenter()
google()
maven {
url 'https://maven.google.com/'
}
}
}
3. **build.gradle (Module:app):**
apply plugin: 'com.android.application'
android {
signingConfigs {
config {
storeFile file('sssssssssssssssssssssssssssssss')
keyAlias 'aaaaaaa'
keyPassword 'bbbbbbbb'
storePassword 'ccccccccc'
}
}
compileSdkVersion 27
defaultConfig {
applicationId "xxx.yyy.zzz"
minSdkVersion 16
targetSdkVersion 27
versionCode dd
versionName 'dd.ee.ff'
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
signingConfig signingConfigs.config
vectorDrawables.useSupportLibrary = true
}
buildTypes {
release {
shrinkResources true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
debuggable false
jniDebuggable false
renderscriptDebuggable false
pseudoLocalesEnabled true
}
}
productFlavors {
}
}
dependencies {
testImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
testImplementation 'junit:junit:4.12'
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'org.jetbrains:annotations-java5:15.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.android.support:appcompat-v7:27.0.1'
implementation 'com.android.support:cardview-v7:27.0.1'
implementation 'com.android.support:design:27.0.1'
implementation 'com.android.support:support-annotations:27.0.1'
implementation 'com.google.android.gms:play-services-location:11.8.0'
implementation 'com.google.android.gms:play-services-vision:11.8.0'
implementation 'com.google.firebase:firebase-crash:11.8.0'
implementation 'com.google.firebase:firebase-core:11.8.0'
implementation('com.crashlytics.sdk.android:crashlytics:2.7.1@aar') { transitive = true }
implementation 'me.dm7.barcodescanner:zxing:1.9.8'
}
apply plugin: 'com.google.gms.google-services'
apply plugin: 'io.fabric'
Everything is working OK and as expected.
NOW WHEN I UPGRADE 27.0.1 to 27.0.2:
4. **build.gradle (Module:app)**:
implementation 'com.android.support:appcompat-v7:27.0.2'
implementation 'com.android.support:cardview-v7:27.0.2'
implementation 'com.android.support:design:27.0.2'
implementation 'com.android.support:support-annotations:27.0.2'
并同步项目，我将收到以下错误：
Error:error: attribute 'xxx.yyy.zzz:cardBackgroundColor' not found.
Error:error: attribute 'xxx.yyy.zzz:cardCornerRadius' not found.
Error:error: attribute 'xxx.yyy.zzz:contentPadding' not found.
当我查看Gradle控制台时，我会发现：
Gradle控制台：
Executing tasks: [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar]
Configuration on demand is an incubating feature.
Could not find google-services.json while looking in [src/debug]
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
Could not find google-services.json while looking in [src/release]
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedFolders(FileCollection)
:app:preBuild UP-TO-DATE
:app:preDebugBuild
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:checkDebugManifest UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:prepareLintJar UP-TO-DATE
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:processDebugGoogleServices
Parsing json file: /home/user/AndroidStudioProjects/Project/app/google-services.json
:app:createDebugCompatibleScreenManifests UP-TO-DATE
:app:processDebugManifest
:app:fabricGenerateResourcesDebug
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources
:app:splitsDiscoveryTaskDebug UP-TO-DATE
:app:processDebugResources
AGPBI: {"kind":"error","text":"error: attribute \u0027xxx.yyy.zzz:cardBackgroundColor\u0027 not found.","sources":[{"file":"/home/user/AndroidStudioProjects/Project/app/src/main/res/layout/activity.xml"}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: attribute \u0027xxx.yyy.zzz:cardCornerRadius\u0027 not found.","sources":[{"file":"/home/user/AndroidStudioProjects/Project/app/src/main/res/layout/activity.xml"}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: attribute \u0027xxx.yyy.zzz:contentPadding\u0027 not found.","sources":[{"file":"/home/user/AndroidStudioProjects/Project/app/src/main/res/layout/activity.xml"}],"original":"","tool":"AAPT"}
有点无聊因为Lint建议我有更新的CardView支持库版本：
A newer version of com.android.support:cardview-v7 than 27.0.1 is available: 27.0.2
现在我禁用了这项检查，如下所示：
//noinspection GradleDependency
implementation 'com.android.support:cardview-v7:27.0.1'
已阅读此问题：
Failed to resolve: com.android.support:cardview-v7:26.0.0 android
但它没有给我任何意义来解决这个问题。
我在互联网上阅读了很多文章，但那些与我的问题无关。
答案 0 :(得分：2)
您已将compileSdkVersion设置为27，但您在哪里定义了buildToolsVersion？
通常看起来像：
compileSdkVersion 27
buildToolsVersion '26.0.2'
答案 1 :(得分：0)
今天我能够升级到版本27.1.1，问题似乎消失了。好吧，我仍然不知道为什么会这样，但至少它似乎已经解决了。