03b-advanced-data-binding

app/src/androidTest/java/com/karumi/jetpack/superheroes/ui/view/SuperHeroViewHolderTest.kt

@@ -1,8 +1,10 @@
 package com.karumi.jetpack.superheroes.ui.view
 
 import android.view.LayoutInflater
+import androidx.databinding.DataBindingUtil
 import androidx.test.platform.app.InstrumentationRegistry
 import com.karumi.jetpack.superheroes.R
+import com.karumi.jetpack.superheroes.databinding.SuperHeroRowBinding
 import com.karumi.jetpack.superheroes.domain.model.SuperHero
 import com.karumi.jetpack.superheroes.ui.presenter.SuperHeroesPresenter
 import com.karumi.jetpack.superheroes.ui.view.adapter.SuperHeroViewHolder
@@ -51,15 +53,17 @@ class SuperHeroViewHolderTest : ScreenshotTest {
         compareScreenshot(holder, R.dimen.super_hero_row_height)
     }
 
-    private fun givenASuperHeroViewHolder(): SuperHeroViewHolder {
-        val context = InstrumentationRegistry.getInstrumentation().targetContext
-        val inflater = LayoutInflater.from(context)
-        val view = inflater.inflate(R.layout.super_hero_row, null, false)
-        return SuperHeroViewHolder(
-            view,
-            mock<SuperHeroesPresenter>(SuperHeroesPresenter::class.java)
-        )
-    }
+    private fun givenASuperHeroViewHolder(): SuperHeroViewHolder =
+        runOnUi {
+            val context = InstrumentationRegistry.getInstrumentation().targetContext
+            val inflater = LayoutInflater.from(context)
+            val binding: SuperHeroRowBinding =
+                DataBindingUtil.inflate(inflater, R.layout.super_hero_row, null, false)
+            SuperHeroViewHolder(
+                binding,
+                mock<SuperHeroesPresenter>(SuperHeroesPresenter::class.java)
+            )
+        }
 
     private fun givenASuperHeroWithALongDescription(): SuperHero {
         val superHeroName = "Super Hero Name"
@@ -94,4 +98,10 @@ class SuperHeroViewHolderTest : ScreenshotTest {
         superHeroDescription: String = "Super Hero Description",
         isAvenger: Boolean = false
     ): SuperHero = SuperHero(superHeroId, superHeroName, null, isAvenger, superHeroDescription)
+}
+
+private fun <T> runOnUi(block: () -> T): T {
+    var response: T? = null
+    InstrumentationRegistry.getInstrumentation().runOnMainSync { response = block() }
+    return response!!
 }

app/src/main/java/com/karumi/jetpack/superheroes/common/BindingAdapters.kt

@@ -0,0 +1,12 @@
+package com.karumi.jetpack.superheroes.common
+
+import android.widget.ImageView
+import androidx.databinding.BindingAdapter
+import com.squareup.picasso.Picasso
+
+@BindingAdapter("imageUrl")
+fun setImageUrl(view: ImageView, url: String?) {
+    if (url != null) {
+        Picasso.get().load(url).fit().centerCrop().fit().into(view)
+    }
+}

app/src/main/java/com/karumi/jetpack/superheroes/ui/presenter/EditSuperHeroPresenter.kt

@@ -37,25 +37,21 @@ class EditSuperHeroPresenter(
     }
 
     override fun onSaveSuperHeroSelected(
-        name: String,
-        description: String,
-        isAvenger: Boolean
+        editableSuperHero: EditSuperHeroPresenter.EditableSuperHero
     ) {
-        saveSuperHero(name, description, isAvenger)
+        saveSuperHero(editableSuperHero)
     }
 
     private fun saveSuperHero(
-        name: String,
-        description: String,
-        isAvenger: Boolean
+        editableSuperHero: EditSuperHeroPresenter.EditableSuperHero
     ) = executor.submit {
         view?.showLoading()
         val superHero = superHero ?: return@submit
         saveSuperHero(
             superHero.copy(
-                name = name,
-                description = description,
-                isAvenger = isAvenger
+                name = editableSuperHero.name,
+                description = editableSuperHero.description,
+                isAvenger = editableSuperHero.isAvenger
             )
         )
         view?.close()
@@ -68,6 +64,12 @@ class EditSuperHeroPresenter(
         [email protected] = superHero
     }
 
+    data class EditableSuperHero(
+        var isAvenger: Boolean,
+        var name: String,
+        var description: String
+    )
+
     interface View {
         fun close()
         fun hideLoading()
@@ -77,9 +79,5 @@ class EditSuperHeroPresenter(
 }
 
 interface EditSuperHeroListener {
-    fun onSaveSuperHeroSelected(
-        name: String,
-        description: String,
-        isAvenger: Boolean
-    )
+    fun onSaveSuperHeroSelected(editableSuperHero: EditSuperHeroPresenter.EditableSuperHero)
 }

app/src/main/java/com/karumi/jetpack/superheroes/ui/presenter/SuperHeroesPresenter.kt

@@ -13,7 +13,7 @@ class SuperHeroesPresenter(
     view: View,
     private val getSuperHeroes: GetSuperHeroes,
     private val executor: ExecutorService
-) : LifecycleObserver {
+) : SuperHeroesListener, LifecycleObserver {
 
     private val view: View? by weak(view)
 
@@ -37,7 +37,7 @@ class SuperHeroesPresenter(
         }
     }
 
-    fun onSuperHeroClicked(superHero: SuperHero) {
+    override fun onSuperHeroClicked(superHero: SuperHero) {
         view?.openDetail(superHero.id)
     }
 
@@ -48,4 +48,8 @@ class SuperHeroesPresenter(
         fun showSuperHeroes(superHeroes: List<SuperHero>)
         fun openDetail(id: String)
     }
+}
+
+interface SuperHeroesListener {
+    fun onSuperHeroClicked(superHero: SuperHero)
 }

app/src/main/java/com/karumi/jetpack/superheroes/ui/view/EditSuperHeroActivity.kt

@@ -2,7 +2,6 @@ package com.karumi.jetpack.superheroes.ui.view
 
 import android.app.Activity
 import android.content.Intent
-import android.os.Bundle
 import androidx.appcompat.widget.Toolbar
 import com.karumi.jetpack.superheroes.R
 import com.karumi.jetpack.superheroes.common.module
@@ -11,7 +10,6 @@ import com.karumi.jetpack.superheroes.domain.model.SuperHero
 import com.karumi.jetpack.superheroes.domain.usecase.GetSuperHeroById
 import com.karumi.jetpack.superheroes.domain.usecase.SaveSuperHero
 import com.karumi.jetpack.superheroes.ui.presenter.EditSuperHeroPresenter
-import com.karumi.jetpack.superheroes.ui.utils.setImageBackground
 import kotlinx.android.synthetic.main.edit_super_hero_activity.*
 import org.kodein.di.erased.bind
 import org.kodein.di.erased.instance
@@ -37,17 +35,6 @@ class EditSuperHeroActivity :
         get() = toolbar
     private val superHeroId: String by lazy { intent?.extras?.getString(SUPER_HERO_ID_KEY) ?: "" }
 
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        bt_save_edition.setOnClickListener {
-            presenter.onSaveSuperHeroSelected(
-                name = et_super_hero_name.text?.toString() ?: "",
-                description = et_super_hero_description.text?.toString() ?: "",
-                isAvenger = cb_is_avenger.isChecked
-            )
-        }
-    }
-
     override fun configureBinding(binding: EditSuperHeroActivityBinding) {
         binding.listener = presenter
         binding.isLoading = false
@@ -71,8 +58,9 @@ class EditSuperHeroActivity :
     }
 
     override fun showSuperHero(superHero: SuperHero) = runOnUiThread {
+        binding.listener = presenter
         binding.superHero = superHero
-        iv_super_hero_photo.setImageBackground(superHero.photo)
+        binding.editableSuperHero = superHero.toEditable()
     }
 
     override val activityModules = module {
@@ -82,4 +70,7 @@ class EditSuperHeroActivity :
         bind<GetSuperHeroById>() with provider { GetSuperHeroById(instance()) }
         bind<SaveSuperHero>() with provider { SaveSuperHero(instance()) }
     }
+
+    private fun SuperHero.toEditable() =
+        EditSuperHeroPresenter.EditableSuperHero(isAvenger, name, description)
 }

app/src/main/java/com/karumi/jetpack/superheroes/ui/view/SuperHeroDetailActivity.kt

@@ -9,7 +9,6 @@ import com.karumi.jetpack.superheroes.databinding.SuperHeroDetailActivityBinding
 import com.karumi.jetpack.superheroes.domain.model.SuperHero
 import com.karumi.jetpack.superheroes.domain.usecase.GetSuperHeroById
 import com.karumi.jetpack.superheroes.ui.presenter.SuperHeroDetailPresenter
-import com.karumi.jetpack.superheroes.ui.utils.setImageBackground
 import kotlinx.android.synthetic.main.super_hero_detail_activity.*
 import org.kodein.di.erased.bind
 import org.kodein.di.erased.instance
@@ -55,7 +54,6 @@ class SuperHeroDetailActivity :
     override fun showSuperHero(superHero: SuperHero) = runOnUiThread {
         title = superHero.name
         binding.superHero = superHero
-        iv_super_hero_photo.setImageBackground(superHero.photo)
     }
 
     override fun openEditSuperHero(superHeroId: String) = runOnUiThread {

app/src/main/java/com/karumi/jetpack/superheroes/ui/view/adapter/SuperHeroViewHolder.kt

@@ -1,43 +1,18 @@
 package com.karumi.jetpack.superheroes.ui.view.adapter
 
-import android.view.View
-import android.widget.ImageView
-import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
-import com.karumi.jetpack.superheroes.R
+import com.karumi.jetpack.superheroes.databinding.SuperHeroRowBinding
 import com.karumi.jetpack.superheroes.domain.model.SuperHero
-import com.karumi.jetpack.superheroes.ui.presenter.SuperHeroesPresenter
-import com.karumi.jetpack.superheroes.ui.utils.setImageBackground
+import com.karumi.jetpack.superheroes.ui.presenter.SuperHeroesListener
 
 class SuperHeroViewHolder(
-    itemView: View,
-    private val presenter: SuperHeroesPresenter
-) : RecyclerView.ViewHolder(itemView) {
-
-    private val photoImageView: ImageView = itemView.findViewById(R.id.iv_super_hero_photo)
-    private val nameTextView: TextView = itemView.findViewById(R.id.tv_super_hero_name)
-    private val avengersBadgeView: View = itemView.findViewById(R.id.iv_avengers_badge)
+    private val binding: SuperHeroRowBinding,
+    private val listener: SuperHeroesListener
+) : RecyclerView.ViewHolder(binding.root) {
 
     fun render(superHero: SuperHero) {
-        hookListeners(superHero)
-        renderSuperHeroPhoto(superHero.photo)
-        renderSuperHeroName(superHero.name)
-        renderAvengersBadge(superHero.isAvenger)
-    }
-
-    private fun hookListeners(superHero: SuperHero) {
-        itemView.setOnClickListener { presenter.onSuperHeroClicked(superHero) }
-    }
-
-    private fun renderSuperHeroPhoto(photo: String?) {
-        photoImageView.setImageBackground(photo)
-    }
-
-    private fun renderSuperHeroName(name: String) {
-        nameTextView.text = name
-    }
-
-    private fun renderAvengersBadge(isAvenger: Boolean) {
-        avengersBadgeView.visibility = if (isAvenger) View.VISIBLE else View.GONE
+        binding.superHero = superHero
+        binding.listener = listener
+        binding.executePendingBindings()
     }
 }

app/src/main/java/com/karumi/jetpack/superheroes/ui/view/adapter/SuperHeroesAdapter.kt

@@ -2,13 +2,15 @@ package com.karumi.jetpack.superheroes.ui.view.adapter
 
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.databinding.DataBindingUtil
 import androidx.recyclerview.widget.RecyclerView
 import com.karumi.jetpack.superheroes.R
+import com.karumi.jetpack.superheroes.databinding.SuperHeroRowBinding
 import com.karumi.jetpack.superheroes.domain.model.SuperHero
-import com.karumi.jetpack.superheroes.ui.presenter.SuperHeroesPresenter
+import com.karumi.jetpack.superheroes.ui.presenter.SuperHeroesListener
 
 internal class SuperHeroesAdapter(
-    private val presenter: SuperHeroesPresenter
+    private val listener: SuperHeroesListener
 ) : RecyclerView.Adapter<SuperHeroViewHolder>() {
     private val superHeroes: MutableList<SuperHero> = ArrayList()
 
@@ -17,11 +19,14 @@ internal class SuperHeroesAdapter(
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): SuperHeroViewHolder {
-        val view = LayoutInflater.from(parent.context).inflate(
-            R.layout.super_hero_row, parent,
+        val binding: SuperHeroRowBinding = DataBindingUtil.inflate(
+            LayoutInflater.from(parent.context),
+            R.layout.super_hero_row,
+            parent,
             false
         )
-        return SuperHeroViewHolder(view, presenter)
+
+        return SuperHeroViewHolder(binding, listener)
     }
 
     override fun onBindViewHolder(holder: SuperHeroViewHolder, position: Int) {

app/src/main/res/layout/edit_super_hero_activity.xml

@@ -15,6 +15,10 @@
       name="superHero"
       type="com.karumi.jetpack.superheroes.domain.model.SuperHero" />
 
+    <variable
+      name="editableSuperHero"
+      type="com.karumi.jetpack.superheroes.ui.presenter.EditSuperHeroPresenter.EditableSuperHero" />
+
     <variable
       name="isLoading"
       type="boolean" />
@@ -46,6 +50,7 @@
           android:id="@+id/iv_super_hero_photo"
           android:layout_width="match_parent"
           android:layout_height="@dimen/super_hero_detail_header_height"
+          app:imageUrl="@{ superHero.photo }"
           app:layout_constraintTop_toTopOf="parent"
           tools:background="@color/color_primary_dark"
           tools:ignore="ContentDescription" />
@@ -68,7 +73,7 @@
           android:layout_height="wrap_content"
           android:layout_margin="8dp"
           android:buttonTint="@color/white"
-          android:checked="@{ superHero.avenger }"
+          android:checked="@={ editableSuperHero.avenger, default = false }"
           android:enabled="@{ superHero != null }"
           android:text="@string/is_super_hero_an_avenger_checkbox"
           android:textColor="@color/white"
@@ -92,7 +97,7 @@
             android:hint="@string/edit_super_hero_name_hint"
             android:importantForAutofill="no"
             android:inputType="text"
-            android:text="@{ superHero.name }"
+            android:text="@={ editableSuperHero.name }"
             android:textColor="@color/white"
             tools:ignore="UnusedAttribute" />
 
@@ -116,7 +121,7 @@
             android:importantForAutofill="no"
             android:inputType="textMultiLine"
             android:scrollbars="vertical"
-            android:text="@{ superHero.description }"
+            android:text="@={ editableSuperHero.description }"
             android:textColor="@color/white"
             tools:ignore="UnusedAttribute" />
 
@@ -150,6 +155,7 @@
       android:layout_height="56dp"
       android:background="@color/royal_blue"
       android:enabled="@{ superHero != null }"
+      android:onClick="@{ () -> listener.onSaveSuperHeroSelected(editableSuperHero) }"
       android:text="@string/save_edited_super_hero_button"
       android:textColor="@color/white"
       app:layout_constraintBottom_toBottomOf="parent"

app/src/main/res/layout/super_hero_detail_activity.xml

@@ -43,6 +43,7 @@
         android:id="@+id/iv_super_hero_photo"
         android:layout_width="match_parent"
         android:layout_height="@dimen/super_hero_detail_header_height"
+        app:imageUrl="@{ superHero.photo }"
         app:layout_constraintTop_toBottomOf="@id/toolbar"
         tools:background="@color/color_primary_dark"
         tools:ignore="ContentDescription" />