[ADDED] [#102] Data binding for the resources list items.

Author: hossain-khan

app/src/main/AndroidManifest.xml

@@ -44,6 +44,7 @@
             android:name=".ui.functionaldemo.TedTalkPlaybackActivity"
             android:parentActivityName=".ui.browse.LayoutBrowseActivity" />
         <activity
+            android:label="@string/additional_resource_title"
             android:name=".ui.resource.LearningResourceActivity"
             android:parentActivityName=".ui.browse.LayoutBrowseActivity" />
     </application>

app/src/main/java/com/hossainkhan/android/demo/data/FirestoreDateFormatter.kt

@@ -16,19 +16,20 @@
 
 package com.hossainkhan.android.demo.data
 
+import com.google.firebase.Timestamp
 import java.text.SimpleDateFormat
 import java.util.Date
 import java.util.Locale
 
 
 object FirestoreDateFormatter {
-    fun date(timestamp: Long): String {
+    fun date(timestamp: Timestamp): String {
         val sfd = SimpleDateFormat("EEEE, MMMM d", Locale.CANADA)
-        return sfd.format(Date(timestamp * 1000)) // NOTE: x1000 is Firebase specific conversion
+        return sfd.format(timestamp.toDate())
     }
 
-    fun time(timestamp: Long): String {
-        val sfd = SimpleDateFormat("hh:mm aa", Locale.CANADA)
-        return sfd.format(Date(timestamp * 1000)) // NOTE: x1000 is Firebase specific conversion
+    fun date(date: Date): String {
+        val sfd = SimpleDateFormat("MMMM d, yyyy", Locale.CANADA)
+        return sfd.format(date)
     }
 }

app/src/main/java/com/hossainkhan/android/demo/data/ResourceInfo.kt

@@ -16,17 +16,26 @@
 
 package com.hossainkhan.android.demo.data
 
+import com.google.firebase.Timestamp
+import java.util.*
+
 
 data class ResourceInfo(
-        val author: String,
-        val summary: String,
-        val title: String,
-        val event: String,
-        val url: String,
-        val publish_date: Timestamp,
+        var author: String = "",
+        var summary: String = "",
+        var title: String = "",
+        var event: String = "",
+        var url: String = "",
+        var publish_date: Timestamp? = null,
         /**
          * Possible values
          * "blog", "techtalk"
          */
-        val type: String = "techtalk"
-)
+        var type: String = "techtalk"
+) {
+    val formattedDate: String
+        get() {
+            val date = publish_date?.toDate() ?: Date()
+            return FirestoreDateFormatter.date(date)
+        }
+}

app/src/main/java/com/hossainkhan/android/demo/di/DataStoreModule.kt

@@ -19,6 +19,7 @@ package com.hossainkhan.android.demo.di
 import android.content.Context
 import android.content.SharedPreferences
 import android.content.res.Resources
+import com.google.firebase.firestore.FirebaseFirestore
 import dagger.Module
 import dagger.Provides
 
@@ -33,4 +34,9 @@ class DataStoreModule {
     internal fun provideAndroidResoures(context: Context): Resources {
         return context.resources
     }
+
+    @Provides
+    internal fun provideFirestore(context: Context): FirebaseFirestore {
+        return FirebaseFirestore.getInstance()
+    }
 }

app/src/main/java/com/hossainkhan/android/demo/ui/resource/LearningResourceActivity.kt

@@ -16,6 +16,9 @@
 
 package com.hossainkhan.android.demo.ui.resource
 
+import android.content.ActivityNotFoundException
+import android.content.Intent
+import android.net.Uri
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
 import androidx.databinding.DataBindingUtil
@@ -24,6 +27,7 @@ import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.hossainkhan.android.demo.R
+import com.hossainkhan.android.demo.data.ResourceInfo
 import com.hossainkhan.android.demo.databinding.ActivityLearningResourceBinding
 import com.hossainkhan.android.demo.viewmodel.ViewModelProviderFactory
 import dagger.android.AndroidInjection
@@ -52,7 +56,7 @@ class LearningResourceActivity : AppCompatActivity() {
 
         val ideaListAdapter = ResourceListAdapter { data ->
             Timber.d("Item Clicked: $data")
-            viewModel.onItemClicked(data)
+            openContent(data)
         }
 
         ideaList.apply {
@@ -65,4 +69,17 @@ class LearningResourceActivity : AppCompatActivity() {
             ideaListAdapter.submitList(result)
         })
     }
+
+    private fun openContent(resourceInfo: ResourceInfo) {
+        // TODO: Update logic later when the URL is not only youtube.
+        val intentApp = Intent(Intent.ACTION_VIEW,
+                Uri.parse("vnd.youtube:" + resourceInfo.url.split("=")[1]))
+
+        val intentBrowser = Intent(Intent.ACTION_VIEW, Uri.parse(resourceInfo.url))
+        try {
+            startActivity(intentApp)
+        } catch (ex: ActivityNotFoundException) {
+            startActivity(intentBrowser)
+        }
+    }
 }

app/src/main/java/com/hossainkhan/android/demo/ui/resource/LearningResourceViewModel.kt

@@ -19,29 +19,35 @@ package com.hossainkhan.android.demo.ui.resource
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import com.google.firebase.firestore.FirebaseFirestore
+import com.google.firebase.firestore.Query
 import com.hossainkhan.android.demo.data.ResourceInfo
+import timber.log.Timber
 import javax.inject.Inject
 
-class LearningResourceViewModel @Inject constructor() : ViewModel() {
+class LearningResourceViewModel @Inject constructor(
+        firestore: FirebaseFirestore
+) : ViewModel() {
     private val _data = MutableLiveData<List<ResourceInfo>>()
     val data: LiveData<List<ResourceInfo>> = _data
 
-    private val sampleData = mutableListOf<ResourceInfo>()
+    private val resourceData = mutableListOf<ResourceInfo>()
 
     init {
-        generateSampleDataSet()
-        _data.value = sampleData.toList()
-    }
-
-    private fun generateSampleDataSet() {
-        for (i in 1..20) {
-            //sampleData.add(ResourceInfo(i))
-        }
-    }
-
-
-
-    fun onItemClicked(item: ResourceInfo) {
-
+        Timber.i("Loading data from firestore: %s", firestore)
+        firestore.collection("external-resources")
+                .orderBy("publish_date", Query.Direction.DESCENDING)
+                .get()
+                .addOnSuccessListener { result ->
+                    for (document in result) {
+                        val x = document.toObject(ResourceInfo::class.java)
+                        Timber.i("Resource: $x")
+                        resourceData.add(x)
+                    }
+                    _data.value = resourceData
+                }
+                .addOnFailureListener { exception ->
+                    Timber.w(exception, "Error getting documents.")
+                }
     }
 }

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

@@ -50,32 +50,35 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="@dimen/material_content_distance_small"
-                android:text="In this session you will learn best practices of using ConstraintLayout on Android, particularly covering tips and tricks in the Layout Editor and new features introduced in the 2.0 version. We will go over how to take advantage of those to create UI more efficiently."
+                android:text="@{data.summary}"
                 app:layout_constraintEnd_toStartOf="@+id/action_play"
                 app:layout_constraintStart_toStartOf="@+id/guideline_vertical_start"
-                app:layout_constraintTop_toBottomOf="@+id/resource_author" />
+                app:layout_constraintTop_toBottomOf="@+id/resource_author"
+                tools:text="In this session you will learn best practices of using ConstraintLayout on Android, particularly covering tips and tricks in the Layout Editor and new features introduced in the 2.0 version. We will go over how to take advantage of those to create UI more efficiently." />
 
             <TextView
                 android:id="@+id/resource_date"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="@dimen/material_content_distance_small"
                 android:layout_marginBottom="@dimen/material_vertical_margin"
-                android:text="December 2, 2018"
+                android:text="@{data.formattedDate}"
                 app:layout_constraintBottom_toBottomOf="parent"
                 app:layout_constraintStart_toStartOf="@+id/guideline_vertical_start"
-                app:layout_constraintTop_toBottomOf="@+id/resource_summary" />
+                app:layout_constraintTop_toBottomOf="@+id/resource_summary"
+                tools:text="December 2, 2018" />
 
             <TextView
                 android:id="@+id/resource_title"
                 style="@style/TextAppearance.AppCompat.Title"
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="@dimen/material_vertical_margin"
-                android:text="This is the title of the talk."
+                android:text="@{data.title}"
                 app:layout_constraintEnd_toStartOf="@+id/action_play"
                 app:layout_constraintStart_toStartOf="@+id/guideline_vertical_start"
-                app:layout_constraintTop_toTopOf="parent" />
+                app:layout_constraintTop_toTopOf="parent"
+                tools:text="This is the title of the talk." />
 
 
             <TextView
@@ -85,10 +88,11 @@
                 android:layout_height="wrap_content"
                 android:layout_marginTop="@dimen/material_content_distance_small"
                 android:gravity="end"
-                android:text="by Author of the talk."
+                android:text="@{@string/tech_talk_author_and_venue(data.author, data.event)}"
                 app:layout_constraintEnd_toStartOf="@+id/action_play"
                 app:layout_constraintStart_toStartOf="@+id/guideline_vertical_start"
-                app:layout_constraintTop_toBottomOf="@+id/resource_title" />
+                app:layout_constraintTop_toBottomOf="@+id/resource_title"
+                tools:text="by Author of the talk." />
 
             <androidx.constraintlayout.widget.Guideline
                 android:id="@+id/guideline_vertical_start"

app/src/main/res/values/strings.xml

@@ -22,4 +22,7 @@
     <string name="barrier_label_button_small">Action Label</string>
     <string name="barrier_label_button_long">Action Longer Translated Label</string>
 
+    <string name="additional_resource_title">External Resources</string>
+    <string name="tech_talk_author_and_venue">by %1$s at %2$s</string>
+
 </resources>