design版本号都改成了26.0.0为什么还是显示版本号不一致

来源：1-4 首页框架—TabLayout布局搭建

qq_Foalness_0

2018-04-19

targetSdkVersion 26

compileSdkVersion 26

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qq__粉色的小海星_0

2018-08-23

我也这个求样子，我都v7.28了

dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'com.android.support:appcompat-v7:28.0.0-rc01'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

implementation 'com.android.support:design:28.0.0'
}

照样失败