CollapsingToolbarLayout无法解析

Question

import android.support.design.widget.CollapsingToolbarLayout;

等级：

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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'

//recyclerview
compile 'com.android.support:recyclerview-v7:28.0.0'

//glide
implementation 'com.github.bumptech.glide:glide:4.8.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'

//CardView
compile 'com.android.support:cardview-v7:28.0.0'

//circle imageview
implementation 'de.hdodenhof:circleimageview:2.2.0'

有人知道为什么我无法解决CollapsingToolbarLayout吗？

预先感谢：）。