Step.03 solution create room database

README.md

@@ -52,6 +52,10 @@ Access all branches from this tab.
 
 The branches are also accessible from the drop-down in the "Code" tab.
 
+## Requirements
+
+1. Android Studio (Jellyfish or above)
+2. JDK 21 with `JAVA_HOME` environment variable set. If you don't have JDK 21 installed or `JAVA_HOME` is not set, consider using a tool like `sdkman` to simplify the process. Refer to the sdkman documentation for installation instructions: [sdkman installation](https://sdkman.io/install)
 
 ## Working with the Course Code
 

app/build.gradle

@@ -16,19 +16,20 @@
 
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
+// Kotlin Android Extensions is deprecated, which means that using Kotlin synthetics for view binding is no longer supported.
+// apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 apply plugin: 'androidx.navigation.safeargs'
 
 android {
-    compileSdkVersion 28
+    compileSdk 34
     defaultConfig {
         applicationId "com.example.android.trackmysleepquality"
-        minSdkVersion 19
-        targetSdkVersion 28
+        minSdkVersion 21
+        targetSdkVersion 34
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        multiDexEnabled true
         vectorDrawables.useSupportLibrary = true
     }
     buildTypes {
@@ -39,15 +40,21 @@ android {
     }
 
     // Enables data binding.
-    dataBinding {
-        enabled = true
+    buildFeatures {
+        dataBinding true
     }
+    namespace = "com.example.android.trackmysleepquality"
 
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
+    }
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$version_kotlin"
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$version_kotlin"
 
     // Support libraries
     implementation "androidx.constraintlayout:constraintlayout:$version_constraint_layout"
@@ -58,19 +65,27 @@ dependencies {
     // Room and Lifecycle dependencies
     implementation "androidx.room:room-runtime:$version_room"
     kapt "androidx.room:room-compiler:$version_room"
-    implementation "androidx.lifecycle:lifecycle-extensions:$version_lifecycle_extensions"
+    // The APIs in lifecycle-extensions have been deprecated. Instead, add dependencies for the specific Lifecycle artifacts you need.
+    // implementation "androidx.lifecycle:lifecycle-extensions:$version_lifecycle_extensions"
 
     // Coroutines
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$version_coroutine"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$version_coroutine"
 
     // Navigation
-    implementation "android.arch.navigation:navigation-fragment-ktx:$version_navigation"
-    implementation "android.arch.navigation:navigation-ui-ktx:$version_navigation"
+    implementation "androidx.navigation:navigation-fragment-ktx:$version_navigation"
+    implementation "androidx.navigation:navigation-ui-ktx:$version_navigation"
+
+    // ViewModel and LiveData
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$version_lifecycle"
+
+    // Kotlin Extensions and Coroutines support for Room
+    implementation "androidx.room:room-ktx:$version_room"
+
 
     // Testing
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 }
 

app/src/main/AndroidManifest.xml

@@ -9,7 +9,8 @@
         android:roundIcon="@mipmap/ic_launcher_sleep_tracker_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".MainActivity"
+          android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/example/android/trackmysleepquality/database/SleepDatabaseDao.kt

@@ -29,7 +29,7 @@ import androidx.room.Update
 interface SleepDatabaseDao {
 
     @Insert
-    fun insert(night: SleepNight)
+    suspend fun insert(night: SleepNight)
 
     /**
      * When updating a row with a value already set in a column,
@@ -38,23 +38,23 @@ interface SleepDatabaseDao {
      * @param night new value to write
      */
     @Update
-    fun update(night: SleepNight)
+    suspend fun update(night: SleepNight)
 
     /**
      * Selects and returns the row that matches the supplied start time, which is our key.
      *
      * @param key startTimeMilli to match
      */
     @Query("SELECT * from daily_sleep_quality_table WHERE nightId = :key")
-    fun get(key: Long): SleepNight?
+    suspend fun get(key: Long): SleepNight?
 
     /**
      * Deletes all values from the table.
      *
      * This does not delete the table, only its contents.
      */
     @Query("DELETE FROM daily_sleep_quality_table")
-    fun clear()
+    suspend fun clear()
 
     /**
      * Selects and returns all rows in the table,
@@ -68,7 +68,7 @@ interface SleepDatabaseDao {
      * Selects and returns the latest night.
      */
     @Query("SELECT * FROM daily_sleep_quality_table ORDER BY nightId DESC LIMIT 1")
-    fun getTonight(): SleepNight?
+    suspend fun getTonight(): SleepNight?
 
 }
 

app/src/main/java/com/example/android/trackmysleepquality/sleeptracker/SleepTrackerViewModel.kt

@@ -17,6 +17,7 @@
 package com.example.android.trackmysleepquality.sleeptracker
 
 import android.app.Application
+import androidx.lifecycle.viewModelScope
 import androidx.lifecycle.AndroidViewModel
 import com.example.android.trackmysleepquality.database.SleepDatabaseDao
 

app/src/main/java/com/example/android/trackmysleepquality/sleeptracker/SleepTrackerViewModelFactory.kt

@@ -30,7 +30,7 @@ class SleepTrackerViewModelFactory(
         private val dataSource: SleepDatabaseDao,
         private val application: Application) : ViewModelProvider.Factory {
     @Suppress("unchecked_cast")
-    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
+    override fun <T : ViewModel> create(modelClass: Class<T>): T {
         if (modelClass.isAssignableFrom(SleepTrackerViewModel::class.java)) {
             return SleepTrackerViewModel(dataSource, application) as T
         }

build.gradle

@@ -19,25 +19,26 @@
 buildscript {
 
     ext {
-        version_core = "1.0.1"
-        version_coroutine = "1.1.0"
-        version_constraint_layout = "1.1.3"
-        version_gradle = '3.3.0'
-        version_kotlin = "1.3.21"
-        version_lifecycle_extensions = "2.0.0"
-        version_navigation = '1.0.0-beta02'
-        version_room = "2.0.0"
+        version_core = "1.13.1"
+        version_coroutine = "1.8.1"
+        version_constraint_layout = "2.1.4"
+        version_gradle = '8.4.2'
+        version_kotlin = '1.9.23'
+        // version_lifecycle_extensions = "2.2.0"
+        version_lifecycle = '2.8.2'
+        version_navigation = '2.7.7'
+        version_room = '2.6.1'
     }
 
     repositories {
+        mavenCentral()
         google()
-        jcenter()
     }
 
     dependencies {
         classpath "com.android.tools.build:gradle:$version_gradle"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$version_kotlin"
-        classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:$version_navigation"
+        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$version_navigation"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -46,8 +47,8 @@ buildscript {
 
 allprojects {
     repositories {
+        mavenCentral()
         google()
-        jcenter()
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Oct 02 13:39:27 PDT 2018
+#Tue Aug 11 17:39:48 PDT 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip