Dagger2 setup & network bindings

app/build.gradle

@@ -1,8 +1,7 @@
 apply plugin: 'com.android.application'
-
 apply plugin: 'kotlin-android'
-
 apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-kapt'
 
 android {
     compileSdkVersion 28
@@ -26,13 +25,42 @@ androidExtensions {
     experimental = true
 }
 
+ext {
+    androidSupportVersion = "27.1.1"
+    timberVersion = "4.6.1"
+    butterknifeVersion = "8.8.1"
+    rxJavaVersion = "2.1.9"
+    rxandroidVersion = "2.0.2"
+    rxBindingVersion = "2.1.1"
+    picassoVersion = "2.5.2"
+    gsonVersion = "2.7"
+    roomVersion = "2.0.0-beta01"
+    retrofitVersion = "2.3.0"
+    daggerVersion = "2.11"
+    okhttpVersion = "3.9.1"
+    debugDatabaseVersion = "1.0.3"
+    circleIndicator = "1.2.2@aar"
+    photoView = "2.1.3"
+    rxbinding = "2.1.1"
+    junitVersion = "4.12"
+    testRunnerVersion = "1.0.1"
+    espressoVersion = "3.0.1"
+    mockitoVersion = "2.10.0"
+}
+
 dependencies {
 
     def anko_version = '0.10.5'
 
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+
+    implementation "androidx.room:room-runtime:${roomVersion}"
+    implementation "androidx.room:room-rxjava2:${roomVersion}"
+    kapt "androidx.room:room-compiler:${roomVersion}"
+
     implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
+
     implementation 'com.google.android.material:material:1.0.0-beta01'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
     testImplementation 'junit:junit:4.12'
@@ -42,4 +70,28 @@ dependencies {
     implementation "org.jetbrains.anko:anko:$anko_version"
     implementation 'com.squareup.picasso:picasso:2.71828'
     implementation 'androidx.palette:palette:1.0.0-beta01'
+
+    implementation "com.jakewharton.timber:timber:${timberVersion}"
+
+    implementation "io.reactivex.rxjava2:rxjava:${rxJavaVersion}"
+    implementation "io.reactivex.rxjava2:rxandroid:${rxandroidVersion}"
+    implementation "com.google.code.gson:gson:${gsonVersion}"
+
+    implementation "com.squareup.retrofit2:retrofit:${retrofitVersion}"
+    implementation "com.squareup.retrofit2:converter-gson:${retrofitVersion}"
+    implementation "com.squareup.retrofit2:converter-scalars:${retrofitVersion}"
+    implementation "com.squareup.retrofit2:adapter-rxjava2:${retrofitVersion}"
+    implementation "com.squareup.okhttp3:okhttp:${okhttpVersion}"
+    implementation "com.squareup.okhttp3:logging-interceptor:${okhttpVersion}"
+    implementation "com.google.dagger:dagger:${daggerVersion}"
+    implementation "com.google.dagger:dagger-android-support:${daggerVersion}"
+    implementation "com.jakewharton.rxbinding2:rxbinding-appcompat-v7:${rxbinding}"
+    kapt "com.jakewharton:butterknife-compiler:${butterknifeVersion}"
+    kapt "com.google.dagger:dagger-compiler:${daggerVersion}"
+    kapt "com.google.dagger:dagger-android-processor:${daggerVersion}"
+    debugImplementation "com.amitshekhar.android:debug-db:${debugDatabaseVersion}"
+    testImplementation "org.mockito:mockito-core:${mockitoVersion}"
+    compile project(path: ':domain')
+    compile project(path: ':data')
+
 }

app/src/main/AndroidManifest.xml

@@ -6,13 +6,14 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
+        android:name=".FoodApp"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
-        tools:ignore="GoogleAppIndexingWarning">
+        tools:ignore="AllowBackup,GoogleAppIndexingWarning">
 
         <activity android:name=".dashboard.ui.MainActivity">
             <intent-filter>

app/src/main/java/foodapp/com/foodapp/AppConstants.kt

@@ -0,0 +1,6 @@
+package foodapp.com.foodapp
+
+object AppConstants {
+
+    val BASE_URL = "http://www.json-generator.com/api/json/get/"
+}

app/src/main/java/foodapp/com/foodapp/ErrorType.kt

@@ -0,0 +1,24 @@
+package foodapp.com.foodapp
+
+enum class ErrorType(val icon: Int, val title: Int, val subtitle: Int) {
+
+    CONNECTION_ERROR(
+            R.drawable.ic_svg_network_error,
+            R.string.inv_connection_error_title,
+            R.string.inv_connection_error_subtitle),
+
+    TIMEOUT_ERROR(
+            R.drawable.ic_svg_network_error,
+            R.string.inv_timeout_error_title,
+            R.string.inv_timeout_error_subtitle),
+
+    SERVER_ERROR(
+            R.drawable.ic_svg_network_error,
+            R.string.inv_generic_error_title,
+            R.string.inv_generic_error_subtitle),
+
+    CLIENT_ERROR(
+            R.drawable.ic_svg_network_error,
+            R.string.inv_generic_error_title,
+            R.string.inv_generic_error_subtitle)
+}

app/src/main/java/foodapp/com/foodapp/FoodApp.kt

@@ -0,0 +1,30 @@
+package foodapp.com.foodapp
+
+import android.app.Activity
+import android.app.Application
+import dagger.android.AndroidInjector
+import dagger.android.DispatchingAndroidInjector
+import dagger.android.HasActivityInjector
+import foodapp.com.foodapp.di.DaggerAppComponent
+import timber.log.Timber
+import javax.inject.Inject
+
+class FoodApp : Application(), HasActivityInjector {
+
+    @Inject
+    lateinit var mDispatchingAndroidActivityInjector: DispatchingAndroidInjector<Activity>
+
+    override fun onCreate() {
+        super.onCreate()
+
+        DaggerAppComponent.builder().create(this).inject(this)
+
+        if (BuildConfig.DEBUG) {
+            Timber.plant(Timber.DebugTree())
+        }
+    }
+
+    override fun activityInjector(): AndroidInjector<Activity>? {
+        return mDispatchingAndroidActivityInjector
+    }
+}

app/src/main/java/foodapp/com/foodapp/base/BasePresenter.kt

@@ -0,0 +1,45 @@
+package foodapp.com.foodapp.base;
+
+import foodapp.com.data.shared.utils.ErrorUtils
+import foodapp.com.foodapp.ErrorType
+import timber.log.Timber
+
+open class BasePresenter<V : MvpView> : MvpPresenter<V> {
+
+    private var mMvpView: V? = null
+
+    val mvpView: V?
+        get() {
+            checkViewAttached()
+            return mMvpView
+        }
+
+    private val isViewAttached: Boolean
+        get() = mMvpView != null
+
+    override fun onAttach(mvpView: V) {
+        mMvpView = mvpView
+    }
+
+    override fun onDetach() {
+        mMvpView = null
+    }
+
+    private fun checkViewAttached() {
+        if (!isViewAttached) {
+            Timber.e("Please call Presenter.onAttach(MvpView) before requesting data to the Presenter")
+        }
+    }
+
+    fun handleError(throwable: Throwable) {
+        if (ErrorUtils.isConnectionError(throwable)) {
+            mvpView!!.onError(ErrorType.CONNECTION_ERROR)
+        } else if (ErrorUtils.isTimeOut(throwable)) {
+            mvpView!!.onError(ErrorType.TIMEOUT_ERROR)
+        } else if (ErrorUtils.isServerError(throwable)) {
+            mvpView!!.onError(ErrorType.SERVER_ERROR)
+        } else if (ErrorUtils.isClientError(throwable)) {
+            mvpView!!.onError(ErrorType.CLIENT_ERROR)
+        }
+    }
+}

app/src/main/java/foodapp/com/foodapp/base/MvpPresenter.kt

@@ -0,0 +1,7 @@
+package foodapp.com.foodapp.base
+
+interface MvpPresenter<V : MvpView> {
+    fun onAttach(mvpView: V)
+
+    fun onDetach()
+}

app/src/main/java/foodapp/com/foodapp/base/MvpView.kt

@@ -0,0 +1,13 @@
+package foodapp.com.foodapp.base;
+
+import foodapp.com.foodapp.ErrorType
+
+interface MvpView {
+
+    fun showLoading()
+
+    fun hideLoading()
+
+    fun onError(type: ErrorType)
+
+}

app/src/main/java/foodapp/com/foodapp/dashboard/adapter/HeroImageViewsAdapter.kt

@@ -5,7 +5,9 @@ import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentStatePagerAdapter
 import foodapp.com.foodapp.dashboard.ui.HeroImageFragment
 
-class HeroImageViewsAdapter(private var imagesRes: ArrayList<Int>? = null, private var imagesUrls: ArrayList<String>? = null, manager: FragmentManager) : FragmentStatePagerAdapter(manager) {
+class HeroImageViewsAdapter(private var imagesRes: ArrayList<Int>? = null,
+                            private var imagesUrls: ArrayList<String>? = null,
+                            manager: FragmentManager) : FragmentStatePagerAdapter(manager) {
 
     override fun getCount(): Int {
         imagesRes?.let {

app/src/main/java/foodapp/com/foodapp/dashboard/ui/MainActivity.kt

@@ -3,15 +3,13 @@ package foodapp.com.foodapp.dashboard.ui
 import android.animation.Animator
 import android.animation.AnimatorListenerAdapter
 import android.animation.ValueAnimator
-import android.content.Intent
 import android.graphics.Color
 import android.graphics.PorterDuff
 import android.os.Bundle
 import android.os.Handler
 import android.view.View
 import android.view.ViewAnimationUtils
 import androidx.appcompat.app.AppCompatActivity
-import androidx.viewpager.widget.ViewPager
 import foodapp.com.foodapp.R
 import foodapp.com.foodapp.dashboard.adapter.HeroImageViewsAdapter
 import foodapp.com.foodapp.foods.ui.FoodListActivity
@@ -33,47 +31,31 @@ class MainActivity : AppCompatActivity() {
                 manager = fragmentManager
         )
 
-        heroImagesViewPager.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
-            override fun onPageScrollStateChanged(state: Int) {
-                // do nothing
-            }
-
-            override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
-                // do nothing
-            }
-
-            override fun onPageSelected(position: Int) {
-
-            }
-        })
-
         tabLayout.setupWithViewPager(heroImagesViewPager, true)
 
         startButton.setOnClickListener {
+            animateButton()
 
-            startAnimation()
-        }
-    }
+            fadeTextAndShowProgress()
 
-    private fun startAnimation() {
-        animateButtonWidth();
-
-        fadeOutTextAndShowProgressDialog()
-
-        nextAction()
+            handleNext()
+        }
     }
 
-    private fun nextAction() {
+    private fun handleNext() {
         Handler().postDelayed({
-            revealButton()
+            startRevealAnimation()
 
-            fadeOutProgressDialog()
+            progressBar.animate().alpha(0f).setDuration(200).start()
 
-            delayedStartNextActivity()
+            Handler().postDelayed(
+                    {
+                        startActivity(FoodListActivity.newInstance(this@MainActivity))
+                    }, 100)
         }, 2000)
     }
 
-    private fun revealButton() {
+    private fun startRevealAnimation() {
         startButton.elevation = 0f
 
         reveal.visibility = View.VISIBLE
@@ -91,10 +73,6 @@ class MainActivity : AppCompatActivity() {
         circularReveal.duration = 350
         circularReveal.addListener(object : AnimatorListenerAdapter() {
             override fun onAnimationEnd(animation: Animator) {
-                reset(animation)
-            }
-
-            private fun reset(animation: Animator) {
                 super.onAnimationEnd(animation)
                 reveal.visibility = View.INVISIBLE
                 buttonText.visibility = View.VISIBLE
@@ -109,19 +87,11 @@ class MainActivity : AppCompatActivity() {
         circularReveal.start()
     }
 
-    private fun fadeOutProgressDialog() {
-        progressBar.animate().alpha(0f).setDuration(200).start()
-    }
-
-    private fun delayedStartNextActivity() {
-        Handler().postDelayed({ startActivity(Intent(this@MainActivity, FoodListActivity::class.java)) }, 100)
-    }
-
     private fun getFabWidth(): Int {
         return resources.getDimension(R.dimen.fab_size).toInt()
     }
 
-    private fun fadeOutTextAndShowProgressDialog() {
+    private fun fadeTextAndShowProgress() {
         buttonText.animate().alpha(0f)
                 .setDuration(250)
                 .setListener(object : AnimatorListenerAdapter() {
@@ -141,7 +111,7 @@ class MainActivity : AppCompatActivity() {
         progressBar.visibility = View.VISIBLE
     }
 
-    private fun animateButtonWidth() {
+    private fun animateButton() {
         val anim = ValueAnimator.ofInt(startButton.measuredWidth, getFabWidth())
 
         anim.addUpdateListener { valueAnimator ->

app/src/main/java/foodapp/com/foodapp/details/FoodDetailsActivity.kt

@@ -16,9 +16,9 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import com.squareup.picasso.Callback
 import com.squareup.picasso.Picasso
+import foodapp.com.data.model.FoodItem
 import foodapp.com.foodapp.R
 import foodapp.com.foodapp.dashboard.adapter.HeroImageViewsAdapter
-import foodapp.com.foodapp.model.FoodItem
 import foodapp.com.foodapp.views.AnimationEndListener
 import foodapp.com.foodapp.views.CircleTransform
 import foodapp.com.foodapp.views.DepthPageTransformer

app/src/main/java/foodapp/com/foodapp/di/ActivityBindingModule.kt

@@ -0,0 +1,13 @@
+package foodapp.com.foodapp.di
+
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+import foodapp.com.foodapp.foods.ui.FoodListActivity
+import foodapp.com.foodapp.foods.ui.FoodListActivityModule
+
+@Module
+abstract class ActivityBindingModule {
+
+    @ContributesAndroidInjector(modules = [(FoodListActivityModule::class)])
+    abstract fun foodListActivity(): FoodListActivity
+}