很难让Gradle构建Android L“；错误：多次找到项目样式/AppTheme“；

我目前正在尝试使用Android L SDK版本创建一个Android应用程序。 但是，当尝试使用Gradle构建项目时，我遇到以下错误：

“错误：多次找到项目样式/AppTheme”

指向我的res/values-v21/styles.xml

我知道res/values/styles.xml中已经定义了一个样式“AppTheme”，但据我所知，我遵循了《Android开发者指南》中关于使用Android L的规定。也许有人可以帮助我：

这是我的：

build.gradle

apply plugin: 'com.android.application'

android {
   compileSdkVersion 'android-L'
   buildToolsVersion '20.0.0'

defaultConfig {
    applicationId "com.mayuonline.ribbit"
    minSdkVersion 'L'
    targetSdkVersion 'L'
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        runProguard false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
   compile fileTree(dir: 'libs', include: ['*.jar'])
   compile 'com.android.support:support-v4:20.+'
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="resume.kelseyhrubes" >

    <uses-sdk android:minSdkVersion="L" android:targetSdkVersion="L"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<resources>
    <!-- inherit from the material theme -->
        <style name="AppTheme" parent="android:Theme.Material">
    <!-- Main theme colors -->
    <!--   your app branding color for the app bar -->
            <item name="android:colorPrimary">@color/primary</item>
    <!--   darker variant for the status bar and contextual app bars -->
            <item name="android:colorPrimaryDark">@color/primary_dark</item>
    <!--   theme UI controls like checkboxes and text fields -->
            <item name="android:colorAccent">@color/primary_light</item>
    </style>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="AppTheme" parent="android:Theme.Material.Light">
    </style>

    <style name="AppTheme">@color/primary

        @color/primary_dark

        @color/primary_light
    </style>
</resources>

values/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="resume.kelseyhrubes" >

    <uses-sdk android:minSdkVersion="L" android:targetSdkVersion="L"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<resources>
    <!-- inherit from the material theme -->
        <style name="AppTheme" parent="android:Theme.Material">
    <!-- Main theme colors -->
    <!--   your app branding color for the app bar -->
            <item name="android:colorPrimary">@color/primary</item>
    <!--   darker variant for the status bar and contextual app bars -->
            <item name="android:colorPrimaryDark">@color/primary_dark</item>
    <!--   theme UI controls like checkboxes and text fields -->
            <item name="android:colorAccent">@color/primary_light</item>
    </style>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="AppTheme" parent="android:Theme.Material.Light">
    </style>

    <style name="AppTheme">@color/primary

        @color/primary_dark

        @color/primary_light
    </style>
</resources>

@颜色/原色
@颜色/原色/深色
@颜色/主光

values-v21/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="resume.kelseyhrubes" >

    <uses-sdk android:minSdkVersion="L" android:targetSdkVersion="L"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<resources>
    <!-- inherit from the material theme -->
        <style name="AppTheme" parent="android:Theme.Material">
    <!-- Main theme colors -->
    <!--   your app branding color for the app bar -->
            <item name="android:colorPrimary">@color/primary</item>
    <!--   darker variant for the status bar and contextual app bars -->
            <item name="android:colorPrimaryDark">@color/primary_dark</item>
    <!--   theme UI controls like checkboxes and text fields -->
            <item name="android:colorAccent">@color/primary_light</item>
    </style>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="AppTheme" parent="android:Theme.Material.Light">
    </style>

    <style name="AppTheme">@color/primary

        @color/primary_dark

        @color/primary_light
    </style>
</resources>

@颜色/原色
@颜色/原色/深色
@颜色/主光

我为格式错误道歉，我希望所有内容都可读。

---

如果有人知道我做错了什么，请告诉我。我只想制作一个具有甜美材质设计的应用程序。

与错误状态一样，您在values-v21/styles.xml中定义了两次AppTheme。移除其中一个。啊，当然！我不知道为什么我没有注意到这一点。