#341# Arranging Package Design # Creating new database in MVVM archit…

…ecture # Using Dependency Injection # Using not hard-coded variable names # Using Coroutine # Using ViewModel #Add new dependencies on gradle files#

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/build.gradle

@@ -1,6 +1,11 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'kotlin-android'
+    id 'kotlin-kapt'
+    id 'org.jetbrains.dokka'
+    id 'dagger.hilt.android.plugin'
+    id 'com.google.dagger.hilt.android'
 }
 //
 android {
@@ -29,11 +34,11 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = '17'
     }
 }
 
@@ -61,13 +66,55 @@ dependencies {
     implementation("androidx.recyclerview:recyclerview-selection:1.1.0")
 
 
-    // ViewModel
-    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2")
-    // ViewModel utilities for Compose
-    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.6.2")
-    // LiveData
-    implementation("androidx.lifecycle:lifecycle-livedata-ktx:2.6.2")
-    // Lifecycles only (without ViewModel or LiveData)
-    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
+    //lifecycle for ViewModel and LiveData
+    def lifecycle_version = "2.6.1"
+    def coroutine_lifecycle_version = "2.6.2"
+
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version") // ViewModel
+    implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")
+
+    //lifecycle
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
+    implementation "androidx.lifecycle:lifecycle-common-java8:2.6.2"
+
+    //noinspection LifecycleAnnotationProcessorWithJava8
+    kapt("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
+
+    // Room
+    def room_version = "2.6.0"
+    implementation("androidx.room:room-runtime:$room_version")
+    annotationProcessor("androidx.room:room-compiler:$room_version")
+    // To use Kotlin annotation processing tool (kapt)
+    kapt("androidx.room:room-compiler:$room_version")
+
+    //androidx
+    implementation("androidx.concurrent:concurrent-futures-ktx:1.1.0")
+
+    // Kotlin Extensions and Coroutines support for Room
+    implementation "androidx.room:room-ktx:$room_version"
+
+    def coroutine_version = "1.6.4"
+    // Coroutines
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutine_version"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutine_version"
+
+    // Coroutine Lifecycle Scopes
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$coroutine_lifecycle_version"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:$coroutine_lifecycle_version"
+
+    //apache for string utils
+    implementation 'org.apache.commons:commons-text:1.9'
+
+    //dagger-hilt
+    implementation("com.google.dagger:hilt-android:2.46")
+    //because it gives an error with hilt-android 2.46 it's older version. I wastes my 2 hours..
+    kapt("com.google.dagger:hilt-android-compiler:2.44")
+    //to add dagger-hilt by viewModel()
+    implementation "androidx.fragment:fragment-ktx:1.6.1"
+
+    //Gson
+    implementation 'com.google.code.gson:gson:2.10.1'
 
 }

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
+        android:name=".DarpApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/DarpApplication.kt

@@ -0,0 +1,13 @@
+package com.example.disasterresponseplatform
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+/** This is for Hilt
+ *  It basically for hold the ActivationContext on Hilt, thanks to this class whenever Hilt needs an ActivationContext
+ *  it comes from there
+ *  Warning: You need to add Manifest because it's an activity otherwise you will get an error
+ */
+@HiltAndroidApp
+class DarpApplication: Application() {
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/MainActivity.kt

@@ -4,20 +4,27 @@ import android.os.Bundle
 import android.util.Log
 import android.view.MenuItem
 import android.widget.Toast
+import androidx.activity.viewModels
 import androidx.appcompat.app.ActionBarDrawerToggle
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.GravityCompat
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentTransaction
+import com.example.disasterresponseplatform.data.database.need.Need
+import com.example.disasterresponseplatform.data.enums.Urgency
 import com.example.disasterresponseplatform.databinding.ActivityMainBinding
 import com.example.disasterresponseplatform.ui.HomePageFragment
 import com.example.disasterresponseplatform.ui.activity.ActivityFragment
+import com.example.disasterresponseplatform.ui.activity.need.NeedViewModel
 import com.example.disasterresponseplatform.ui.authentication.LoginFragment
 import com.example.disasterresponseplatform.ui.authentication.RegistrationFragment
 import com.example.disasterresponseplatform.ui.map.MapFragment
 import com.example.disasterresponseplatform.ui.network.NetworkFragment
 import com.example.disasterresponseplatform.ui.profile.ProfileFragment
+import com.example.disasterresponseplatform.utils.DateUtil
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
 
     private lateinit var binding: ActivityMainBinding
@@ -30,6 +37,8 @@ class MainActivity : AppCompatActivity() {
     private val loginFragment = LoginFragment()
     private val registrationFragment = RegistrationFragment()
 
+    private lateinit var needViewModel: NeedViewModel
+
 
     private lateinit var toggle: ActionBarDrawerToggle
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -43,6 +52,18 @@ class MainActivity : AppCompatActivity() {
         replaceFragment(homePageFragment)
         navBarListener()
         toggleListener()
+
+        // it is created by dependency Injection without creating any of db, dao or repo
+        val getNeedViewModel: NeedViewModel by viewModels()
+        needViewModel = getNeedViewModel
+
+    }
+
+    private fun tryNeedViewModel(){
+        val need = Need(null,"Egecan","Clothes","T-Shirt",DateUtil.getDate("dd-MM-yy").toString(),50,"İstanbul",Urgency.CRITICAL.type)
+        needViewModel.insertNeed(need)
+        val location = needViewModel.getLocation("Egecan")
+        Toast.makeText(this,location,Toast.LENGTH_SHORT).show()
     }
 
     private fun toggleListener(){
@@ -58,6 +79,7 @@ class MainActivity : AppCompatActivity() {
                 R.id.miRegister -> replaceNavFragment(registrationFragment)
                 R.id.miNetwork -> replaceNavFragment(networkFragment)
                 R.id.miLogout -> Toast.makeText(this,"Logout",Toast.LENGTH_SHORT).show()
+                R.id.miAddNeed -> tryNeedViewModel()
             }
             binding.root.closeDrawer(GravityCompat.START) //whenever clicked item on drawer, closing it automatically
             true

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/adapter/ActivityAdapter.kt

@@ -1,6 +1,5 @@
 package com.example.disasterresponseplatform.adapter
 
-import android.content.Intent
 import android.os.Looper
 import android.view.LayoutInflater
 import android.view.ViewGroup
@@ -9,12 +8,10 @@ import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.recyclerview.widget.RecyclerView
 import com.example.disasterresponseplatform.R
-import com.example.disasterresponseplatform.data.ActivityEnum
-import com.example.disasterresponseplatform.data.DummyActivity
-import com.example.disasterresponseplatform.data.PredefinedTypes
+import com.example.disasterresponseplatform.data.enums.ActivityEnum
+import com.example.disasterresponseplatform.data.models.DummyActivity
+import com.example.disasterresponseplatform.data.enums.PredefinedTypes
 import com.example.disasterresponseplatform.databinding.ActivityItemBinding
-import kotlinx.coroutines.delay
-import java.util.logging.Handler
 
 class ActivityAdapter(private val activityList: MutableList<DummyActivity>): RecyclerView.Adapter<ActivityAdapter.ActivityViewHolder>() {
 

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/database/DarpDB.kt

@@ -0,0 +1,39 @@
+package com.example.disasterresponseplatform.data.database
+
+import android.content.Context
+import androidx.room.AutoMigration
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.migration.Migration
+import com.example.disasterresponseplatform.data.database.need.Need
+import com.example.disasterresponseplatform.data.database.need.NeedDao
+
+@Database(entities = [Need::class], version = DatabaseInfo.DATABASE_VERSION, exportSchema = false)
+abstract class DarpDB: RoomDatabase() {
+    abstract val needDao: NeedDao
+
+    // it's static object in this way you can call getInstance method without any initialization
+    companion object{
+        @Volatile //this makes this field visible to other threads
+        private var firstInstance: DarpDB? = null
+
+        fun getInstance(context: Context): DarpDB {
+            synchronized(this) {
+                var instance = firstInstance
+                if (instance == null) {
+                    instance = Room.databaseBuilder(
+                        context.applicationContext,
+                        DarpDB::class.java, DatabaseInfo.DATABASE
+                    )
+                        .allowMainThreadQueries()
+                        .fallbackToDestructiveMigration() // when migrate a new version delete the existing db
+                        .build()
+                    firstInstance = instance
+                }
+                return instance
+            }
+        }
+    }
+
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/database/DatabaseInfo.kt

@@ -0,0 +1,16 @@
+package com.example.disasterresponseplatform.data.database
+
+/**
+ * This is for holding data in regular way.
+ */
+class DatabaseInfo {
+    companion object {
+        const val DATABASE: String = "DARP_DB"
+        const val ACTION: String = "ACTION"
+        const val EMERGENCY: String = "EMERGENCY"
+        const val EVENT: String = "EVENT"
+        const val NEED: String = "NEED"
+        const val RESOURCE: String = "RESOURCE"
+        const val DATABASE_VERSION: Int = 2 // you need to change that whenever you change any table on DB
+    }
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/database/need/Need.kt

@@ -0,0 +1,27 @@
+package com.example.disasterresponseplatform.data.database.need
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.example.disasterresponseplatform.data.database.DatabaseInfo
+
+@Entity(tableName = DatabaseInfo.NEED)
+data class Need(
+    @PrimaryKey(autoGenerate = true)
+    @ColumnInfo (name = NeedCols.id)
+    val ID: Int?, // if user does not enter ID, it generates it automatically
+    @ColumnInfo(name = NeedCols.creatorID)
+    val creatorID: String,
+    @ColumnInfo(name = NeedCols.type)
+    val type: String,
+    @ColumnInfo(name = NeedCols.subTypeList)
+    val subType: String,
+    @ColumnInfo(name = NeedCols.creationTime)
+    val creationTime: String?,
+    @ColumnInfo(name = NeedCols.quantity)
+    val quantity: Int?,
+    @ColumnInfo(name = NeedCols.location)
+    val location: String?,
+    @ColumnInfo(name = NeedCols.urgency)
+    val urgency: Int?
+)

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/database/need/NeedCols.kt

@@ -0,0 +1,16 @@
+package com.example.disasterresponseplatform.data.database.need
+
+class NeedCols {
+
+    companion object{
+        const val id: String = "id"
+        const val type: String = "type"
+        const val subTypeList: String = "subTypeList"
+        const val creationTime: String = "creationTime"
+        const val creatorID: String = "creatorID"
+        const val location: String = "location"
+        const val quantity: String = "quantity"
+        const val urgency: String = "urgency"
+
+    }
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/database/need/NeedDao.kt

@@ -0,0 +1,15 @@
+package com.example.disasterresponseplatform.data.database.need
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.Query
+import com.example.disasterresponseplatform.data.database.DatabaseInfo
+
+@Dao
+interface NeedDao {
+    @Insert
+    suspend fun insertActivation(need: Need)
+
+    @Query("SELECT ${NeedCols.location} FROM ${DatabaseInfo.NEED}  WHERE ${NeedCols.creatorID} = :creatorID")
+    fun getLocation(creatorID: String): String
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/ActivityEnum.kt → Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/enums/ActivityEnum.kt

@@ -1,4 +1,4 @@
-package com.example.disasterresponseplatform.data
+package com.example.disasterresponseplatform.data.enums
 
 enum class ActivityEnum(val type: Int) {
     Action(1),

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/enums/EndPoint.kt

@@ -0,0 +1,7 @@
+package com.example.disasterresponseplatform.data.enums
+
+enum class Endpoint(val path: String) {
+    DATA("joke/any"),
+    USER("user"),
+    PRODUCTS("products");
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/PredefinedTypes.kt → Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/enums/PredefinedTypes.kt

@@ -1,4 +1,4 @@
-package com.example.disasterresponseplatform.data
+package com.example.disasterresponseplatform.data.enums
 
 enum class PredefinedTypes(val type: Int) {
     Clothes(1),

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/enums/RequestType.kt

@@ -0,0 +1,5 @@
+package com.example.disasterresponseplatform.data.enums
+
+enum class RequestType {
+    GET, POST, PUT, DELETE // Add more HTTP methods as needed
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/enums/Urgency.kt

@@ -0,0 +1,10 @@
+package com.example.disasterresponseplatform.data.enums
+
+enum class Urgency(val type: Int) {
+    EMERGENCY(0),
+    CRITICAL(1),
+    URGENT(2),
+    HIGH_PRIORITY(3),
+    NORMAL_PRIORITY(4),
+    LOW_PRIORITY(5)
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/models/DummyActivity.kt

@@ -0,0 +1,8 @@
+package com.example.disasterresponseplatform.data.models
+
+import com.example.disasterresponseplatform.data.enums.ActivityEnum
+import com.example.disasterresponseplatform.data.enums.PredefinedTypes
+
+class DummyActivity(var activityType: ActivityEnum, var predefinedTypes: PredefinedTypes, var location: String,
+                    var date: String, var reliabilityScale: Double) {
+}

Disaster-Response-Platform/mobile/DisasterResponsePlatform/app/src/main/java/com/example/disasterresponseplatform/data/repositories/NeedRepository.kt

@@ -0,0 +1,17 @@
+package com.example.disasterresponseplatform.data.repositories
+
+import com.example.disasterresponseplatform.data.database.need.Need
+import com.example.disasterresponseplatform.data.database.need.NeedDao
+import javax.inject.Inject
+
+class NeedRepository @Inject constructor(private val needDao: NeedDao) {
+
+    suspend fun insertNeed(need: Need){
+        needDao.insertActivation(need)
+    }
+
+    fun getLocation(creatorID: String): String{
+        return needDao.getLocation(creatorID)
+    }
+
+}