convert all gradle to kotlin dsl

Author: zhaonian

JetNews/app/build.gradle

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019 Google, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    id("com.android.application")
+    kotlin("android")
+}
+
+android {
+    compileSdkVersion(29)
+    defaultConfig {
+        applicationId = "com.example.jetnews"
+        minSdkVersion(21)
+        targetSdkVersion(29)
+        versionCode = 1
+        versionName = "1.0"
+        vectorDrawables.useSupportLibrary = true
+    }
+    buildTypes {
+        getByName("release") {
+            isMinifyEnabled = false
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
+    }
+    buildFeatures {
+        compose = true
+    }
+}
+
+val ktlint by configurations.creating
+
+dependencies {
+    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.60-eap-25")
+    implementation("androidx.appcompat:appcompat:1.1.0")
+    implementation("androidx.activity:activity-ktx:1.0.0")
+    implementation("androidx.core:core-ktx:1.1.0")
+
+    val composeVersion = "0.1.0-dev02"
+    implementation("androidx.compose:compose-runtime:$composeVersion")
+    implementation("androidx.ui:ui-framework:$composeVersion")
+    implementation("androidx.ui:ui-layout:$composeVersion")
+    implementation("androidx.ui:ui-material:$composeVersion")
+    implementation("androidx.ui:ui-tooling:$composeVersion")
+    ktlint("com.pinterest:ktlint:0.34.2")
+}
+
+tasks.register<JavaExec>("ktlint") {
+    group = "verification"
+    description = "Check Kotlin code style."
+    main = "com.pinterest.ktlint.Main"
+    classpath = configurations.getByName("ktlint")
+    args = listOf("src/**/*.kt")
+}
+
+tasks.getByName("check").dependsOn(tasks.getByName("ktlint"))
+
+tasks.register<JavaExec>("ktlintFormat") {
+    group = "formatting"
+    description = "Fix Kotlin code style deviations."
+    main = "com.pinterest.ktlint.Main"
+    classpath = configurations.getByName("ktlint")
+    args = listOf("-F", "src/**/*.kt")
+}

JetNews/app/build.gradle.kts

@@ -194,7 +194,7 @@ private fun TopicDivider() {
     }
 }
 
-private fun getTopicKey(tab: String, group: String, topic: String)= "$tab-$group-$topic"
+private fun getTopicKey(tab: String, group: String, topic: String) = "$tab-$group-$topic"
 
 private fun isTopicSelected(key: String) = JetnewsStatus.selectedTopics.contains(key)
 

JetNews/app/src/main/java/com/example/jetnews/ui/interests/InterestsScreen.kt

@@ -0,0 +1,2 @@
+rootProject.name = "JetNews"
+include(":app")