Android resource linking failed
error: resource android:attr/fontVariationSettings not found.
error: resource android:attr/ttcIndex not found.
error: failed linking references.

我的工程出现这样的错误是由于我引入了recyclerview，而引入了之后，给我的工程带来了库冲突。
我的build.gradle配置如下：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "28.0.3"
    aaptOptions.cruncherEnabled = false
    aaptOptions.useNewCruncher = false

    defaultConfig {
        applicationId "com.southgis.surver.iData.cadastre"
        minSdkVersion 21
        targetSdkVersion 26
        multiDexEnabled true
        ndk {
            abiFilters "armeabi-v7a"
        }
        versionCode 1
        versionName "1.0"
    }
    dexOptions {
        javaMaxHeapSize "3g"
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    lintOptions{
        abortOnError false
    }
    packagingOptions{
        exclude 'META-INF/rxjava.properties'
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar', '*.aar'], dir: 'libs')
    implementation 'com.android.support:support-v4:26.1.0'
    implementation 'com.android.support:design:26.1.0'
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:2.0.0-alpha1'
    implementation 'com.facebook.fresco:fresco:1.7.1'
     implementation 'com.android.support:recyclerview-v7:26.1.0'
    api 'com.github.bumptech.glide:glide:3.7.0'
    api 'com.github.supertaohaili:FileChooser:1.0.9'

}

网上有的解决办法是将compileSdkVersion改为28，但由于改了这个之后对我的工程带来太多的变化，引来更多的问题，而且很多用户的平板的系统还在9.0一下（目前我还没弄清楚compileSdkVersion是否和平板上的android版本有关）。所以我只能另辟蹊径，以下是我的解决方法：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "28.0.3"
    aaptOptions.cruncherEnabled = false
    aaptOptions.useNewCruncher = false

    defaultConfig {
        applicationId "com.southgis.surver.iData.cadastre"
        minSdkVersion 21
        targetSdkVersion 26
        multiDexEnabled true
        ndk {
            abiFilters "armeabi-v7a"
        }
        versionCode 1
        versionName "1.0"
    }
    dexOptions {
        javaMaxHeapSize "3g"
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    lintOptions{
        abortOnError false
    }
    packagingOptions{
        exclude 'META-INF/rxjava.properties'
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    //添加解决策略
    configurations.all {
        resolutionStrategy {
            force 'com.android.support:support-v4:26.1.0'
        }
    }
}

这样，便不会出现错误了。