优化代码

app/build.gradle

@@ -40,30 +40,41 @@ kapt {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    //kotlin
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 
+    //androidX
     implementation 'androidx.core:core-ktx:1.2.0-alpha01'
     implementation 'androidx.appcompat:appcompat:1.1.0-alpha05'
-    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta1'
+    implementation 'com.google.android.material:material:1.1.0-alpha06'
 
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'com.google.android.material:material:1.0.0'
+    //lifecycle
+    def lifecycle_version = '2.0.0'
+    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
+    kapt "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
 
-    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
-    kapt 'androidx.lifecycle:lifecycle-compiler:2.0.0'
-
-    implementation 'androidx.room:room-runtime:2.0.0'
-    kapt 'androidx.room:room-compiler:2.0.0'
+    //room
+    def room_version = '2.0.0'
+    implementation "androidx.room:room-runtime:$room_version"
+    kapt "androidx.room:room-compiler:$room_version"
 
+    //paging
     implementation 'androidx.paging:paging-runtime:2.1.0'
 
     //anko
     def anko_version = '0.10.8'
     implementation "org.jetbrains.anko:anko-sdk27:$anko_version"
     implementation "org.jetbrains.anko:anko-sdk27-listeners:$anko_version"
+
     //协程
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.2.1'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.2.1'
+    def coroutines_version = '1.2.1'
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines_version"
+
     //规则相关
     implementation 'com.google.code.gson:gson:2.8.5'
     implementation 'org.jsoup:jsoup:1.12.1'
@@ -78,8 +89,4 @@ dependencies {
 
     //Glide
     implementation 'com.github.bumptech.glide:glide:4.8.0'
-
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test:runner:1.2.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }