TrackDetailView: show connected bluetooth device.

build.gradle

@@ -1,17 +1,45 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-buildscript {
-    repositories {
-        google()
-        jcenter()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.1'
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        jcenter()
-    }
-}
+apply plugin: 'com.android.application'
+
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.4.2'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+android {
+    compileSdkVersion 28
+
+    defaultConfig {
+        applicationId "com.google.android.maps.mytracks"
+        minSdkVersion 21
+        targetSdkVersion 28
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+        }
+    }
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test:rules:1.2.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    testImplementation 'androidx.test:core:1.2.0'
+}