Android Studio＆＃34;无法解决：com.android.support:support-core-utils:23.2.1"

Question

尝试添加

时遇到此错误

compile "com.android.support:support-core-utils:23.2.1"

为我的移动应用构建build.gradle。这是整个build.gradle（移动） 申请插件：＆＃39; com.android.application＆＃39;

android {
    compileSdkVersion 23
    buildToolsVersion "21.1.2"
    defaultConfig {
        applicationId "com.xxxxxxx.sam.collegegrader"
        minSdkVersion 10
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    wearApp project(':wear')
    compile 'com.google.android.gms:play-services:9.8.0'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'com.android.support:design:23.4.0'
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:support-core-utils:23.2.1'
}

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这是我的第一个Android应用程序，所以，我可能刚刚犯了一个初学者错误。以下是我采取的解决问题的步骤：

- 未下载支持库

Failed to resolve: com.android.support:appcompat-v7:15.+ - 按照教程添加库

https://developer.android.com/studio/intro/update.html#sdk-manager - 添加了编译到build.gradle（移动）

https://developer.android.com/topic/libraries/support-library/setup.html#using-apis - 我相信我在build.gradle中有正确的版本＃（23.2.1）

这是我尝试使用android：theme =＆＃34; @ style / ThemeOverlay.AppCompat.Dark.Actionbar＆＃34; RES /布局/ activity_view_college.xml  failed to resolve com.android.support:appcompat-v7:22 and com.android.support:recyclerview-v7:21.1.2

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.xxxxxx.sam.collegegrader.ViewCollegeActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.Actionbar"
        android:fitsSystemWindows="true" >
    </android.support.design.widget.AppBarLayout>

    <!--<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/text_margin"
        android:text="@string/large_text" />-->


</android.support.design.widget.CoordinatorLayout>

styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />

    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

</resources>

styles.xml（v21）

<resources>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>
</resources>

Answer 1

您收到此错误是因为support-core-utils库是v23.2.1中v4支持库的一部分。

随着v24.2.0的发布，v4支持库被拆分为几个较小的模块，其中一个是support-core-utils。有关拆分的更多信息，请查看以下链接：https://developer.android.com/topic/libraries/support-library/revisions.html#24-2-0-v4-refactor

因此，您的问题的解决方案是使用较新版本的support-core-utils库，例如25.0.1。