购物车的依赖以及权限

//依赖

   implementation 'com.github.bumptech.glide:glide:3.7.0'
    implementation 'com.squareup.okhttp3:okhttp:3.9.0'
    implementation 'com.squareup.okhttp3:logging-interceptor:3.5.0'
    implementation 'com.google.code.gson:gson:2.8.1'
    implementation 'com.jakewharton:butterknife:8.5.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'
    implementation 'com.android.support:recyclerview-v7:26+'
    implementation 'com.squareup.retrofit2:retrofit:2.3.0'//retrofit依赖
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'//retrofit内部封装的GSON
    implementation "io.reactivex.rxjava2:rxjava:2.1.7"
    implementation "com.squareup.retrofit2:adapter-rxjava2:2.3.0"
    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
    implementation 'com.facebook.fresco:fresco:0.12.0'
    implementation 'com.facebook.fresco:animated-base-support:0.12.0'
    implementation 'com.facebook.fresco:animated-webp:0.12.0'
    implementation 'com.facebook.fresco:webpsupport:0.12.0'

//权限

 <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />