diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b8966d3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# Ignore ./idea folder
+.idea/*
diff --git a/.gradle/5.1.1/executionHistory/executionHistory.bin b/.gradle/5.1.1/executionHistory/executionHistory.bin
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diff --git a/.gradle/5.1.1/gc.properties b/.gradle/5.1.1/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/.gradle/5.1.1/javaCompile/classAnalysis.bin b/.gradle/5.1.1/javaCompile/classAnalysis.bin
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diff --git a/.gradle/5.1.1/javaCompile/javaCompile.lock b/.gradle/5.1.1/javaCompile/javaCompile.lock
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diff --git a/.gradle/5.1.1/javaCompile/taskHistory.bin b/.gradle/5.1.1/javaCompile/taskHistory.bin
new file mode 100644
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diff --git a/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/.gradle/buildOutputCleanup/buildOutputCleanup.lock
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diff --git a/.gradle/buildOutputCleanup/cache.properties b/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 0000000..5e3f930
--- /dev/null
+++ b/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Wed May 15 11:39:32 WET 2019
+gradle.version=5.1.1
diff --git a/.gradle/buildOutputCleanup/outputFiles.bin b/.gradle/buildOutputCleanup/outputFiles.bin
new file mode 100644
index 0000000..3fdbdd6
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diff --git a/.gradle/vcs-1/gc.properties b/.gradle/vcs-1/gc.properties
new file mode 100644
index 0000000..e69de29
diff --git a/CodeChallenge.iml b/CodeChallenge.iml
new file mode 100644
index 0000000..51883cb
--- /dev/null
+++ b/CodeChallenge.iml
@@ -0,0 +1,20 @@
+
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\ No newline at end of file
diff --git a/README.md b/README.md
index f83520b..35a6230 100644
--- a/README.md
+++ b/README.md
@@ -44,10 +44,16 @@ Here's what each element represents :
-## Technologies to use
-Choose whatever mobile platform you're most familiar with.
+## Technologies
+For this project, I still stuck to the Android Jetpack libraries:
-* For iOS, feel free to use Swift or Objective-C.
-* For Android, feel free to use Kotlin or Java.
+* Butter Knife --> Viewbinding library for android.
+* Retrofit --> REST client library for android, it makes it easy to retrieve JSON data via API.
+* Paging library --> Facilitates loading data from network data source on-demand, and also allows the app to work with large data sets.
+* ViewModel library --> Stores and manages UI-related data in a lifecycle conscious way.
+* Glide --> Used for loading images efficiently.
+## How to run project
+Follow the indications on the Google Developpers Doc [here](https://developer.android.com/training/basics/firstapp/running-app).
+
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/app/app.iml b/app/app.iml
new file mode 100644
index 0000000..09b6829
--- /dev/null
+++ b/app/app.iml
@@ -0,0 +1,196 @@
+
+
+
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+ generateDebugSources
+
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\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..0ab33c8
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,61 @@
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 28
+ defaultConfig {
+ applicationId "io.psisoft.codechallenge"
+ minSdkVersion 15
+ targetSdkVersion 28
+ versionCode 1
+ versionName "1.0"
+ testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+ compileOptions {
+ sourceCompatibility = '1.8'
+ targetCompatibility = '1.8'
+ }
+}
+
+dependencies {
+
+ def butter_knife_version = "8.8.1"
+ def retrofit_version = "2.4.0"
+ def paging_version = "1.0.0"
+ def view_model_version = "1.1.0"
+ def glide_version = "4.9.0"
+
+ // Adding Butter Knife
+ implementation "com.jakewharton:butterknife:$butter_knife_version"
+ annotationProcessor "com.jakewharton:butterknife-compiler:$butter_knife_version"
+
+ //Adding Retrofit
+ implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
+ implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
+
+ // Adding paging
+ implementation "android.arch.paging:runtime:$paging_version"
+
+ // Adding view model
+ implementation "android.arch.lifecycle:extensions:$view_model_version"
+ implementation "android.arch.lifecycle:viewmodel:$view_model_version"
+
+ // Adding Glide
+ implementation "com.github.bumptech.glide:glide:$glide_version"
+ annotationProcessor "com.github.bumptech.glide:compiler:$glide_version"
+
+
+ implementation fileTree(dir: 'libs', include: ['*.jar'])
+ implementation 'com.android.support:appcompat-v7:28.0.0'
+ implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+ implementation 'com.android.support:design:28.0.0'
+ implementation 'com.android.support:support-v4:28.0.0'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'com.android.support.test:runner:1.0.2'
+ androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/app/src/androidTest/java/io/psisoft/codechallenge/ExampleInstrumentedTest.java b/app/src/androidTest/java/io/psisoft/codechallenge/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..3f696d6
--- /dev/null
+++ b/app/src/androidTest/java/io/psisoft/codechallenge/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package io.psisoft.codechallenge;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see Testing documentation
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+ @Test
+ public void useAppContext() {
+ // Context of the app under test.
+ Context appContext = InstrumentationRegistry.getTargetContext();
+
+ assertEquals("io.psisoft.codechallenge", appContext.getPackageName());
+ }
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..0a7605e
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/java/io/psisoft/codechallenge/adapter/RepositoryAdapter.java b/app/src/main/java/io/psisoft/codechallenge/adapter/RepositoryAdapter.java
new file mode 100644
index 0000000..6ab5f10
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/adapter/RepositoryAdapter.java
@@ -0,0 +1,55 @@
+package io.psisoft.codechallenge.adapter;
+
+import android.arch.paging.PagedListAdapter;
+import android.support.annotation.NonNull;
+import android.support.v7.util.DiffUtil;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import io.psisoft.codechallenge.R;
+import io.psisoft.codechallenge.model.GithubRepository;
+
+public class RepositoryAdapter extends PagedListAdapter {
+
+ public RepositoryAdapter() {
+ super(DIFF_CALLBACK);
+ }
+
+ private static DiffUtil.ItemCallback DIFF_CALLBACK =
+ new DiffUtil.ItemCallback() {
+
+ @Override
+ public boolean areItemsTheSame(GithubRepository oldGithubRepository,
+ GithubRepository newGithubRepository) {
+ return oldGithubRepository.getId() == newGithubRepository.getId();
+ }
+
+ @Override
+ public boolean areContentsTheSame(GithubRepository oldGithubRepository,
+ GithubRepository newGithubRepository) {
+ return oldGithubRepository.equals(newGithubRepository);
+ }
+ };
+
+
+ @NonNull
+ @Override
+ public RepositoryViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
+ // Inflate the item repository view
+ View view = LayoutInflater.from(viewGroup.getContext())
+ .inflate(R.layout.repository_item_view, viewGroup, false);
+ return new RepositoryViewHolder(view);
+ }
+
+ @Override
+ public void onBindViewHolder(@NonNull RepositoryViewHolder repositoryViewHolder, int i) {
+
+ GithubRepository item = getItem(i);
+
+ if (item != null) {
+ // Bind data into the view holder
+ repositoryViewHolder.bindData(item);
+ }
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/adapter/RepositoryViewHolder.java b/app/src/main/java/io/psisoft/codechallenge/adapter/RepositoryViewHolder.java
new file mode 100644
index 0000000..c67c1ab
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/adapter/RepositoryViewHolder.java
@@ -0,0 +1,84 @@
+package io.psisoft.codechallenge.adapter;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.bumptech.glide.Glide;
+
+import java.util.Map;
+import java.util.NavigableMap;
+import java.util.TreeMap;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import io.psisoft.codechallenge.R;
+import io.psisoft.codechallenge.model.GithubRepository;
+
+public class RepositoryViewHolder extends RecyclerView.ViewHolder {
+
+ @BindView(R.id.repository_name)
+ TextView repositoryName;
+ @BindView(R.id.repository_description)
+ TextView repositoryDescription;
+ @BindView(R.id.owner_image)
+ ImageView ownerImage;
+ @BindView(R.id.owner_name)
+ TextView ownerName;
+ @BindView(R.id.repository_stars)
+ TextView repositoryStars;
+
+ private Context context;
+ private static final NavigableMap suffixes = new TreeMap<>();
+
+ static {
+ suffixes.put(1_000L, "k");
+ suffixes.put(1_000_000L, "M");
+ suffixes.put(1_000_000_000L, "G");
+ suffixes.put(1_000_000_000_000L, "T");
+ suffixes.put(1_000_000_000_000_000L, "P");
+ suffixes.put(1_000_000_000_000_000_000L, "E");
+ }
+
+
+ public RepositoryViewHolder(@NonNull View itemView) {
+ super(itemView);
+ ButterKnife.bind(this, itemView);
+
+ context = itemView.getContext();
+ }
+
+ // Bind data to the ViewHolder
+ public void bindData(GithubRepository githubRepository) {
+
+ repositoryName.setText(githubRepository.getName());
+ repositoryDescription.setText(githubRepository.getDescription());
+ repositoryStars.setText(format(githubRepository.getStargazersCount()));
+
+ ownerName.setText(githubRepository.getOwner().getLogin());
+
+ Glide.with(context)
+ .load(githubRepository.getOwner().getAvatar_url())
+ .centerCrop()
+ .placeholder(R.drawable.ic_image_placeholder)
+ .into(ownerImage);
+ }
+
+ // Custom number formatting
+ private String format(long value) {
+ if (value == Long.MIN_VALUE) return format(Long.MIN_VALUE + 1);
+ if (value < 0) return "-" + format(-value);
+ if (value < 1000) return Long.toString(value);
+
+ Map.Entry e = suffixes.floorEntry(value);
+ Long divideBy = e.getKey();
+ String suffix = e.getValue();
+
+ long truncated = value / (divideBy / 10);
+ boolean hasDecimal = truncated < 100 && (truncated / 10d) != (truncated / 10);
+ return hasDecimal ? (truncated / 10d) + suffix : (truncated / 10) + suffix;
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/api/ApiHelper.java b/app/src/main/java/io/psisoft/codechallenge/api/ApiHelper.java
new file mode 100644
index 0000000..675523b
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/api/ApiHelper.java
@@ -0,0 +1,27 @@
+package io.psisoft.codechallenge.api;
+
+import io.psisoft.codechallenge.model.GithubResponse;
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Query;
+
+public interface ApiHelper {
+
+ /**
+ * Get github repositories from API.
+ *
+ * @param order desc or asc order
+ * @param sort sorting attribute
+ * @param createdDate page size
+ * @param page page number
+ *
+ * @return GithubRepositories
+ */
+ @GET("search/repositories")
+ Call getGithubRepositories(
+ @Query("q") String createdDate,
+ @Query("sort") String sort,
+ @Query("order") String order,
+ @Query("page") int page
+ );
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/api/ApiService.java b/app/src/main/java/io/psisoft/codechallenge/api/ApiService.java
new file mode 100644
index 0000000..8202b3b
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/api/ApiService.java
@@ -0,0 +1,34 @@
+package io.psisoft.codechallenge.api;
+
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+
+/* Singleton class
+ * for Retrofit
+ */
+public class ApiService {
+
+ private static final String BASE_URL = "https://api.github.com/";
+ private static ApiService mInstance;
+ private Retrofit retrofit;
+
+ // private constructor
+ private ApiService(){
+ retrofit = new Retrofit.Builder()
+ .baseUrl(BASE_URL)
+ .addConverterFactory(GsonConverterFactory.create())
+ .build();
+ }
+
+ // Get Retrofit instance
+ public static synchronized ApiService getInstance(){
+ if(mInstance == null){
+ mInstance = new ApiService();
+ }
+ return mInstance;
+ }
+
+ public ApiHelper getApiHelper(){
+ return retrofit.create(ApiHelper.class);
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/api/NetworkState.java b/app/src/main/java/io/psisoft/codechallenge/api/NetworkState.java
new file mode 100644
index 0000000..ec58ada
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/api/NetworkState.java
@@ -0,0 +1,34 @@
+package io.psisoft.codechallenge.api;
+
+public class NetworkState {
+
+ private final Status status;
+ private final String msg;
+
+ public static final NetworkState INITIALIZED;
+ public static final NetworkState NOT_INITIALIZED;
+ public static final NetworkState LOADING;
+ public static final NetworkState LOADED;
+ public static final NetworkState FAILED;
+
+ NetworkState(Status status, String msg) {
+ this.status = status;
+ this.msg = msg;
+ }
+
+ static {
+ INITIALIZED = new NetworkState(Status.INITIALIZED, "Initialized");
+ NOT_INITIALIZED = new NetworkState(Status.NOT_INITIALIZED, "Not initialized properly");
+ LOADED = new NetworkState(Status.SUCCESS, "Success");
+ LOADING = new NetworkState(Status.RUNNING, "Running");
+ FAILED = new NetworkState(Status.FAILED, "Problem was accrued");
+ }
+
+ public Status getStatus() {
+ return status;
+ }
+
+ public String getMsg() {
+ return msg;
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/api/Status.java b/app/src/main/java/io/psisoft/codechallenge/api/Status.java
new file mode 100644
index 0000000..b90a79f
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/api/Status.java
@@ -0,0 +1,9 @@
+package io.psisoft.codechallenge.api;
+
+public enum Status {
+ INITIALIZED,
+ NOT_INITIALIZED,
+ RUNNING,
+ SUCCESS,
+ FAILED
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/psisoft/codechallenge/model/GithubRepository.java b/app/src/main/java/io/psisoft/codechallenge/model/GithubRepository.java
new file mode 100644
index 0000000..f2d16d9
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/model/GithubRepository.java
@@ -0,0 +1,78 @@
+package io.psisoft.codechallenge.model;
+
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+
+public class GithubRepository {
+
+ private int id;
+ private String name;
+ private String description;
+ private GithubRepositoryOwner owner;
+
+ @SerializedName("stargazers_count")
+ @Expose
+ private int stargazersCount;
+
+
+ // Constructor
+ public GithubRepository(int id, String name, String description, GithubRepositoryOwner owner, int stargazersCount) {
+ this.id = id;
+ this.name = name;
+ this.description = description;
+ this.owner = owner;
+ this.stargazersCount = stargazersCount;
+ }
+
+ // Getters and Setters
+ public int getId() {
+ return id;
+ }
+
+ public void setId(int id) {
+ this.id = id;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public String getDescription() {
+ return description;
+ }
+
+ public void setDescription(String description) {
+ this.description = description;
+ }
+
+ public GithubRepositoryOwner getOwner() {
+ return owner;
+ }
+
+ public void setOwner(GithubRepositoryOwner owner) {
+ this.owner = owner;
+ }
+
+ public int getStargazersCount() {
+ return stargazersCount;
+ }
+
+ public void setStargazersCount(int stargazersCount) {
+ this.stargazersCount = stargazersCount;
+ }
+
+
+ // Methods
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+ GithubRepository that = (GithubRepository) o;
+ return id == that.id;
+ }
+
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/model/GithubRepositoryOwner.java b/app/src/main/java/io/psisoft/codechallenge/model/GithubRepositoryOwner.java
new file mode 100644
index 0000000..64c7f73
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/model/GithubRepositoryOwner.java
@@ -0,0 +1,32 @@
+package io.psisoft.codechallenge.model;
+
+public class GithubRepositoryOwner {
+
+ private String login;
+ private String avatar_url;
+
+
+ // Constructor
+ public GithubRepositoryOwner(String login, String avatar_url) {
+ this.login = login;
+ this.avatar_url = avatar_url;
+ }
+
+
+ // Getters and Setters
+ public String getLogin() {
+ return login;
+ }
+
+ public void setLogin(String login) {
+ this.login = login;
+ }
+
+ public String getAvatar_url() {
+ return avatar_url;
+ }
+
+ public void setAvatar_url(String avatar_url) {
+ this.avatar_url = avatar_url;
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/model/GithubResponse.java b/app/src/main/java/io/psisoft/codechallenge/model/GithubResponse.java
new file mode 100644
index 0000000..d05c5af
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/model/GithubResponse.java
@@ -0,0 +1,52 @@
+package io.psisoft.codechallenge.model;
+
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+
+import java.util.List;
+
+public class GithubResponse {
+
+ @SerializedName("total_count")
+ @Expose
+ private int totalCount;
+
+ @SerializedName("incomplete_results")
+ @Expose
+ private boolean incompleteResults;
+
+ private List items;
+
+
+ // Constructor
+ public GithubResponse(int totalCount, boolean incompleteResults, List items) {
+ this.totalCount = totalCount;
+ this.incompleteResults = incompleteResults;
+ this.items = items;
+ }
+
+ // Getters and Setters
+ public int getTotalCount() {
+ return totalCount;
+ }
+
+ public void setTotalCount(int totalCount) {
+ this.totalCount = totalCount;
+ }
+
+ public boolean isIncompleteResults() {
+ return incompleteResults;
+ }
+
+ public void setIncompleteResults(boolean incompleteResults) {
+ this.incompleteResults = incompleteResults;
+ }
+
+ public List getItems() {
+ return items;
+ }
+
+ public void setItems(List items) {
+ this.items = items;
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/ui/MainActivity.java b/app/src/main/java/io/psisoft/codechallenge/ui/MainActivity.java
new file mode 100644
index 0000000..1c3de4f
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/ui/MainActivity.java
@@ -0,0 +1,63 @@
+package io.psisoft.codechallenge.ui;
+
+import android.support.design.widget.BottomNavigationView;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.Toolbar;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import io.psisoft.codechallenge.R;
+
+public class MainActivity extends AppCompatActivity{
+
+ @BindView(R.id.navigation_view)
+ BottomNavigationView bottomNavigationView;
+ @BindView(R.id.my_toolbar)
+ Toolbar customToolbar;
+ @BindView(R.id.my_toolbar_title)
+ TextView toolbarTitle;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+ ButterKnife.bind(this);
+
+ // Set Action Bar with a custom Toolbar
+ setSupportActionBar(customToolbar);
+
+ // Setup the trending fragment
+ FragmentManager fragmentManager = getSupportFragmentManager();
+ fragmentManager.beginTransaction().replace(R.id.container, new Trending(), "feed").commit();
+ bottomNavigationView.setSelectedItemId(R.id.trending);
+
+ // Listen to the selected navigation item
+ bottomNavigationView.setOnNavigationItemSelectedListener
+ (item -> {
+ Fragment selectedFragment = null;
+ switch (item.getItemId()) {
+ case R.id.trending:
+ selectedFragment = new Trending();
+ toolbarTitle.setText("Trending Repo");
+ break;
+ case R.id.setting:
+ selectedFragment = new Settings();
+ toolbarTitle.setText("Settings");
+ break;
+ }
+
+ // Replace container with the selected fragment
+ FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+ transaction.replace(R.id.container, selectedFragment);
+ transaction.commit();
+ return true;
+ });
+ }
+
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/ui/RepositoryViewModel.java b/app/src/main/java/io/psisoft/codechallenge/ui/RepositoryViewModel.java
new file mode 100644
index 0000000..d5083e8
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/ui/RepositoryViewModel.java
@@ -0,0 +1,53 @@
+package io.psisoft.codechallenge.ui;
+
+import android.arch.core.util.Function;
+import android.arch.lifecycle.LiveData;
+import android.arch.lifecycle.Transformations;
+import android.arch.lifecycle.ViewModel;
+import android.arch.paging.LivePagedListBuilder;
+import android.arch.paging.PagedList;
+
+import io.psisoft.codechallenge.api.NetworkState;
+import io.psisoft.codechallenge.model.GithubRepository;
+import io.psisoft.codechallenge.utils.RepositoryDataSource;
+import io.psisoft.codechallenge.utils.RepositoryDataSourceFactory;
+
+public class RepositoryViewModel extends ViewModel {
+
+ private LiveData> itemPagedList;
+ private LiveData myDataSource;
+ private LiveData networkState;
+
+ private static final int PAGE_SIZE = 30;
+
+ public RepositoryViewModel() {
+ init();
+ }
+
+ public void init() {
+
+ RepositoryDataSourceFactory itemDataSourceFactory = new RepositoryDataSourceFactory();
+ myDataSource = itemDataSourceFactory.getItemLiveDataSource();
+
+ networkState = Transformations.switchMap(myDataSource,
+ (Function>) RepositoryDataSource::getNetworkState);
+
+ PagedList.Config config =
+ (new PagedList.Config.Builder())
+ .setEnablePlaceholders(false)
+ .setPageSize(PAGE_SIZE)
+ .build();
+
+ itemPagedList = (new LivePagedListBuilder(itemDataSourceFactory, config)).build();
+
+
+ }
+
+ public LiveData> getItemPagedList() {
+ return itemPagedList;
+ }
+
+ public LiveData getNetworkState() {
+ return networkState;
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/ui/Settings.java b/app/src/main/java/io/psisoft/codechallenge/ui/Settings.java
new file mode 100644
index 0000000..9150f7c
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/ui/Settings.java
@@ -0,0 +1,31 @@
+package io.psisoft.codechallenge.ui;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import io.psisoft.codechallenge.R;
+
+
+public class Settings extends Fragment {
+
+ public Settings() {
+ // Required empty public constructor
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ }
+
+ @Override
+ public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+ // Inflate the layout for this fragment
+ return inflater.inflate(R.layout.fragment_settings, container, false);
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/ui/Trending.java b/app/src/main/java/io/psisoft/codechallenge/ui/Trending.java
new file mode 100644
index 0000000..6946926
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/ui/Trending.java
@@ -0,0 +1,86 @@
+package io.psisoft.codechallenge.ui;
+
+import android.arch.lifecycle.ViewModelProviders;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v4.app.Fragment;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+import android.widget.Toast;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import io.psisoft.codechallenge.R;
+import io.psisoft.codechallenge.adapter.RepositoryAdapter;
+import io.psisoft.codechallenge.api.Status;
+
+public class Trending extends Fragment {
+
+ @BindView(R.id.trending_recyclerView)
+ RecyclerView trendingRecyclerView;
+ @BindView(R.id.progress_circular)
+ ProgressBar progressBar;
+
+ public Trending() {
+ // Required empty public constructor
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ }
+
+ @Override
+ public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+ // Inflate the layout for this fragment
+ View view = inflater.inflate(R.layout.fragment_trending, container, false);
+ ButterKnife.bind(this, view);
+
+ // Setup trending recycler view
+ trendingRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+ trendingRecyclerView.setHasFixedSize(true);
+
+ RepositoryViewModel itemViewModel = ViewModelProviders.of(this).get(RepositoryViewModel.class);
+ final RepositoryAdapter adapter = new RepositoryAdapter();
+
+ // Observe itemPagedList
+ itemViewModel.getItemPagedList().observe(this, adapter::submitList);
+
+ // Observe the Network state
+ itemViewModel.getNetworkState().observe(this, networkState -> {
+
+ //TODO: In this task, I only treated a few network states.
+ // However, I can add further features to treat error messages.
+
+ if (networkState != null && networkState.getStatus() == Status.NOT_INITIALIZED) {
+ progressBar.setVisibility(View.GONE);
+ Toast.makeText(getContext(), networkState.getMsg(), Toast.LENGTH_LONG).show();
+ }
+
+ if (networkState != null && networkState.getStatus() == Status.INITIALIZED) {
+ progressBar.setVisibility(View.GONE);
+ }
+
+ if (networkState != null && networkState.getStatus() == Status.FAILED) {
+ Toast.makeText(getContext(), networkState.getMsg(), Toast.LENGTH_LONG).show();
+ }
+
+ });
+
+ trendingRecyclerView.setAdapter(adapter);
+
+ return view;
+ }
+
+ @Override
+ public void onStart() {
+ super.onStart();
+
+ }
+
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/utils/RepositoryDataSource.java b/app/src/main/java/io/psisoft/codechallenge/utils/RepositoryDataSource.java
new file mode 100644
index 0000000..9ff2571
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/utils/RepositoryDataSource.java
@@ -0,0 +1,122 @@
+package io.psisoft.codechallenge.utils;
+
+import android.arch.lifecycle.MutableLiveData;
+import android.arch.paging.PageKeyedDataSource;
+import android.support.annotation.NonNull;
+
+import io.psisoft.codechallenge.api.ApiService;
+import io.psisoft.codechallenge.api.NetworkState;
+import io.psisoft.codechallenge.model.GithubResponse;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+
+public class RepositoryDataSource extends PageKeyedDataSource {
+
+ public static final int FIRST_PAGE = 1;
+ private static final String SORTED_BY = "stars";
+ private static final String ORDER = "desc";
+ private static final String LIST_SIZE = "created:>2017-10-22";
+
+ private ApiService apiService;
+ private MutableLiveData networkState;
+
+
+ public RepositoryDataSource() {
+ apiService = ApiService.getInstance();
+ networkState = new MutableLiveData<>();
+ }
+
+ @Override
+ public void loadInitial(@NonNull LoadInitialParams params, @NonNull LoadInitialCallback callback) {
+
+ networkState.postValue(NetworkState.LOADING);
+
+ // Load data for the first page
+ apiService.getApiHelper()
+ .getGithubRepositories(LIST_SIZE, SORTED_BY, ORDER, FIRST_PAGE)
+ .enqueue(new Callback() {
+ @Override
+ public void onResponse(Call call, Response response) {
+
+ if (response.isSuccessful() && response.body() != null) {
+ callback.onResult(response.body().getItems(), null, FIRST_PAGE + 1);
+ networkState.postValue(NetworkState.INITIALIZED);
+ } else {
+ networkState.postValue(NetworkState.NOT_INITIALIZED);
+ }
+
+ }
+
+ @Override
+ public void onFailure(Call call, Throwable t) {
+ networkState.postValue(NetworkState.NOT_INITIALIZED);
+ }
+ });
+ }
+
+ @Override
+ public void loadBefore(@NonNull LoadParams params, @NonNull LoadCallback callback) {
+
+ networkState.postValue(NetworkState.LOADING);
+
+ // Load data for the previews page
+ apiService.getApiHelper()
+ .getGithubRepositories(LIST_SIZE, SORTED_BY, ORDER, (int) params.key)
+ .enqueue(new Callback() {
+ @Override
+ public void onResponse(Call call, Response response) {
+
+ if (response.isSuccessful() && response.body() != null) {
+ Integer key = ((int) params.key > 1) ? (int) params.key - 1 : null;
+ callback.onResult(response.body().getItems(), key);
+ networkState.postValue(NetworkState.LOADED);
+ } else {
+ networkState.postValue(NetworkState.FAILED);
+ }
+
+ }
+
+ @Override
+ public void onFailure(Call call, Throwable t) {
+ networkState.postValue(NetworkState.FAILED);
+ }
+ });
+
+ }
+
+ @Override
+ public void loadAfter(@NonNull LoadParams params, @NonNull LoadCallback callback) {
+
+ networkState.postValue(NetworkState.LOADING);
+
+ // Load data for the next page
+ apiService.getApiHelper()
+ .getGithubRepositories(LIST_SIZE, SORTED_BY, ORDER, (int) params.key)
+ .enqueue(new Callback() {
+ @Override
+ public void onResponse(Call call, Response response) {
+
+ if (response.isSuccessful() && response.body() != null) {
+ Integer key = response.body().isIncompleteResults() ? (int) params.key + 1 : null;
+ callback.onResult(response.body().getItems(), key);
+ networkState.postValue(NetworkState.LOADED);
+ } else {
+ networkState.postValue(NetworkState.FAILED);
+ }
+
+ }
+
+ @Override
+ public void onFailure(Call call, Throwable t) {
+ networkState.postValue(NetworkState.FAILED);
+ }
+ });
+
+ }
+
+ public MutableLiveData getNetworkState() {
+ return networkState;
+ }
+}
diff --git a/app/src/main/java/io/psisoft/codechallenge/utils/RepositoryDataSourceFactory.java b/app/src/main/java/io/psisoft/codechallenge/utils/RepositoryDataSourceFactory.java
new file mode 100644
index 0000000..91ff158
--- /dev/null
+++ b/app/src/main/java/io/psisoft/codechallenge/utils/RepositoryDataSourceFactory.java
@@ -0,0 +1,20 @@
+package io.psisoft.codechallenge.utils;
+
+import android.arch.lifecycle.MutableLiveData;
+import android.arch.paging.DataSource;
+
+public class RepositoryDataSourceFactory extends DataSource.Factory {
+
+ private MutableLiveData repositoryLiveDataSource = new MutableLiveData<>();
+
+ @Override
+ public DataSource create() {
+ RepositoryDataSource repositoryDataSource = new RepositoryDataSource();
+ repositoryLiveDataSource.postValue(repositoryDataSource);
+ return repositoryDataSource;
+ }
+
+ public MutableLiveData getItemLiveDataSource() {
+ return repositoryLiveDataSource;
+ }
+}
diff --git a/app/src/main/res/drawable-hdpi/ic_image_placeholder.png b/app/src/main/res/drawable-hdpi/ic_image_placeholder.png
new file mode 100644
index 0000000..8277f53
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/ic_image_placeholder.png differ
diff --git a/app/src/main/res/drawable-hdpi/ic_settings.png b/app/src/main/res/drawable-hdpi/ic_settings.png
new file mode 100644
index 0000000..e20312f
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/ic_settings.png differ
diff --git a/app/src/main/res/drawable-hdpi/ic_star.png b/app/src/main/res/drawable-hdpi/ic_star.png
new file mode 100644
index 0000000..1a56a69
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/ic_star.png differ
diff --git a/app/src/main/res/drawable-hdpi/ic_star_small.png b/app/src/main/res/drawable-hdpi/ic_star_small.png
new file mode 100644
index 0000000..09ae689
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/ic_star_small.png differ
diff --git a/app/src/main/res/drawable-mdpi/ic_image_placeholder.png b/app/src/main/res/drawable-mdpi/ic_image_placeholder.png
new file mode 100644
index 0000000..7c4cf43
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/ic_image_placeholder.png differ
diff --git a/app/src/main/res/drawable-mdpi/ic_settings.png b/app/src/main/res/drawable-mdpi/ic_settings.png
new file mode 100644
index 0000000..378676d
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/ic_settings.png differ
diff --git a/app/src/main/res/drawable-mdpi/ic_star.png b/app/src/main/res/drawable-mdpi/ic_star.png
new file mode 100644
index 0000000..2606210
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/ic_star.png differ
diff --git a/app/src/main/res/drawable-mdpi/ic_star_small.png b/app/src/main/res/drawable-mdpi/ic_star_small.png
new file mode 100644
index 0000000..091d544
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/ic_star_small.png differ
diff --git a/app/src/main/res/drawable-v21/nav_item_background.xml b/app/src/main/res/drawable-v21/nav_item_background.xml
new file mode 100644
index 0000000..39bdc37
--- /dev/null
+++ b/app/src/main/res/drawable-v21/nav_item_background.xml
@@ -0,0 +1,3 @@
+
+
\ No newline at end of file
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..1f6bb29
--- /dev/null
+++ b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,34 @@
+
+
+
+
+ -
+
+
+
+
+
+
+
+ -
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_launcher_background.xml b/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..0d025f9
--- /dev/null
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/app/src/main/res/drawable/nav_item_background.xml b/app/src/main/res/drawable/nav_item_background.xml
new file mode 100644
index 0000000..8933184
--- /dev/null
+++ b/app/src/main/res/drawable/nav_item_background.xml
@@ -0,0 +1,5 @@
+
+
+