reformat code - migrate to Rx2

.gitignore

@@ -6,3 +6,5 @@
 .DS_Store
 /build
 /captures
+
+\.idea/

app/build.gradle

@@ -1,14 +1,13 @@
 apply plugin: 'com.android.application'
-apply plugin: 'me.tatarka.retrolambda'
 
 android {
-    compileSdkVersion 25
+    compileSdkVersion 27
     buildToolsVersion '27.0.3'
 
     defaultConfig {
         applicationId "com.motondon.rxjavademoapp"
         minSdkVersion 21
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
@@ -30,17 +29,14 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.3.1'
-    compile 'com.android.support:design:25.3.1'
-    compile 'com.android.support:recyclerview-v7:25.3.1'
-    compile 'com.android.support:cardview-v7:25.3.1'
+    compile 'com.android.support:appcompat-v7:27.1.1'
+    compile 'com.android.support:design:27.1.1'
+    compile 'com.android.support:recyclerview-v7:27.1.1'
+    compile 'com.android.support:cardview-v7:27.1.1'
 
     // RxJava dependency
-    compile 'io.reactivex:rxjava:1.1.9'
-
-    // RxAndroid dependency
-    compile 'io.reactivex:rxandroid:1.2.1'
-
+    implementation "io.reactivex.rxjava2:rxjava:2.1.13"
+    implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
     // RxBindings dependency
     compile 'com.jakewharton.rxbinding:rxbinding:0.4.0'
 

app/src/main/java/com/motondon/rxjavademoapp/view/adapter/CategoryItemsAdapter.java

@@ -7,60 +7,58 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
-
+import butterknife.BindView;
+import butterknife.ButterKnife;
 import com.motondon.rxjavademoapp.R;
 import com.motondon.rxjavademoapp.view.main.CategoryItem;
-
 import java.util.List;
 
-import butterknife.BindView;
-import butterknife.ButterKnife;
-
 public class CategoryItemsAdapter extends RecyclerView.Adapter<CategoryItemsAdapter.ViewHolder> {
 
-    private Context mContext;
-    private List<CategoryItem> mCategoryItemList;
+  private Context mContext;
+  private List<CategoryItem> mCategoryItemList;
 
-    public CategoryItemsAdapter(Context context, List<CategoryItem> categoryItemList) {
-        mContext = context;
-        mCategoryItemList = categoryItemList;
-    }
+  public CategoryItemsAdapter(Context context, List<CategoryItem> categoryItemList) {
+    mContext = context;
+    mCategoryItemList = categoryItemList;
+  }
 
-    @Override
-    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-        View v = LayoutInflater
-                .from(mContext)
-                .inflate(R.layout.item_category_list, parent, false);
-        return new ViewHolder(v);
-    }
+  @Override
+  public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+    View v = LayoutInflater.from(mContext).inflate(R.layout.item_category_list, parent, false);
+    return new ViewHolder(v);
+  }
 
-    @Override
-    public void onBindViewHolder(final ViewHolder holder, final int position) {
-        holder.mCategoryItemName.setText(mCategoryItemList.get(position).mExampleName);
-        holder.mCategoryItemDetails.setText(mCategoryItemList.get(position).mExampleDetails);
+  @Override
+  public void onBindViewHolder(final ViewHolder holder, final int position) {
+    holder.mCategoryItemName.setText(mCategoryItemList.get(position).mExampleName);
+    holder.mCategoryItemDetails.setText(mCategoryItemList.get(position).mExampleDetails);
 
-        // When user clicks on an example, extract a class that implements that example and call it by using an intent.
-        holder.itemView.setOnClickListener((v) -> {
-            Intent exampleIntent = new Intent(mContext, mCategoryItemList.get(position).mExampleActivityClass);
-            exampleIntent.putExtra("TITLE", mCategoryItemList.get(position).mExampleName);
+    // When user clicks on an example, extract a class that implements that example and call it by using an intent.
+    holder.itemView.setOnClickListener((v) -> {
+      Intent exampleIntent =
+          new Intent(mContext, mCategoryItemList.get(position).mExampleActivityClass);
+      exampleIntent.putExtra("TITLE", mCategoryItemList.get(position).mExampleName);
 
-            mContext.startActivity(exampleIntent);
-        });
-    }
+      mContext.startActivity(exampleIntent);
+    });
+  }
 
-    @Override
-    public int getItemCount() {
-        return mCategoryItemList.size();
-    }
+  @Override
+  public int getItemCount() {
+    return mCategoryItemList.size();
+  }
 
-    public static class ViewHolder extends RecyclerView.ViewHolder {
+  public static class ViewHolder extends RecyclerView.ViewHolder {
 
-        @BindView(R.id.item) TextView mCategoryItemName;
-        @BindView(R.id.item_details) TextView mCategoryItemDetails;
+    @BindView(R.id.item)
+    TextView mCategoryItemName;
+    @BindView(R.id.item_details)
+    TextView mCategoryItemDetails;
 
-        public ViewHolder(View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-        }
+    public ViewHolder(View itemView) {
+      super(itemView);
+      ButterKnife.bind(this, itemView);
     }
+  }
 }

app/src/main/java/com/motondon/rxjavademoapp/view/adapter/MainActivityAdapter.java

@@ -7,70 +7,74 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
-
+import butterknife.BindView;
+import butterknife.ButterKnife;
 import com.motondon.rxjavademoapp.R;
-import com.motondon.rxjavademoapp.view.main.ExampleByCategoryActivity;
 import com.motondon.rxjavademoapp.view.main.CategoryItem;
+import com.motondon.rxjavademoapp.view.main.ExampleByCategoryActivity;
 import com.motondon.rxjavademoapp.view.main.MainActivity;
-
 import java.util.ArrayList;
 import java.util.List;
 
-import butterknife.BindView;
-import butterknife.ButterKnife;
-
 public class MainActivityAdapter extends RecyclerView.Adapter<MainActivityAdapter.ViewHolder> {
 
-    private List<Pair<List<CategoryItem>, Pair<String, String>>> mExampleCategoriessList = new ArrayList<>();
-    private MainActivity mMainActivity;
+  private List<Pair<List<CategoryItem>, Pair<String, String>>> mExampleCategoriessList =
+      new ArrayList<>();
+  private MainActivity mMainActivity;
 
-    public MainActivityAdapter(MainActivity mainActivity, List<Pair<List<CategoryItem>, Pair<String, String>>> mExampleCategoriessList) {
-        this.mExampleCategoriessList = mExampleCategoriessList;
-        this.mMainActivity = mainActivity;
-    }
+  public MainActivityAdapter(MainActivity mainActivity,
+      List<Pair<List<CategoryItem>, Pair<String, String>>> mExampleCategoriessList) {
+    this.mExampleCategoriessList = mExampleCategoriessList;
+    this.mMainActivity = mainActivity;
+  }
 
-    @Override
-    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_cardview_options, parent, false);
-        return new ViewHolder(view);
-    }
+  @Override
+  public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+    View view = LayoutInflater.from(parent.getContext())
+        .inflate(R.layout.item_cardview_options, parent, false);
+    return new ViewHolder(view);
+  }
 
-    @Override
-    public void onBindViewHolder(final ViewHolder holder, int position) {
+  @Override
+  public void onBindViewHolder(final ViewHolder holder, int position) {
 
-        // Not too much to say here. We just get the item and set a listener for it. When user clicks on it, he will be redirected
-        // to the activity that implements the selected example.
-        Pair<List<CategoryItem>, Pair<String, String>> categoriesDetailsList = mExampleCategoriessList.get(position);
+    // Not too much to say here. We just get the item and set a listener for it. When user clicks on it, he will be redirected
+    // to the activity that implements the selected example.
+    Pair<List<CategoryItem>, Pair<String, String>> categoriesDetailsList =
+        mExampleCategoriessList.get(position);
 
-        final List<CategoryItem> categoryItemList = categoriesDetailsList.first;
-        Pair<String, String> item = categoriesDetailsList.second;
+    final List<CategoryItem> categoryItemList = categoriesDetailsList.first;
+    Pair<String, String> item = categoriesDetailsList.second;
 
-        holder.categoryName.setText(item.first);
-        holder.categoryDetails.setText(item.second);
+    holder.categoryName.setText(item.first);
+    holder.categoryDetails.setText(item.second);
 
-        holder.itemView.setOnClickListener((v) -> {
-            Intent exampleByCategoryIntent = new Intent(mMainActivity.getApplicationContext(), ExampleByCategoryActivity.class);
+    holder.itemView.setOnClickListener((v) -> {
+      Intent exampleByCategoryIntent =
+          new Intent(mMainActivity.getApplicationContext(), ExampleByCategoryActivity.class);
 
-            exampleByCategoryIntent.putExtra("CATEGORY_ITEMS",(ArrayList) categoryItemList);
-            exampleByCategoryIntent.putExtra("TITLE", holder.categoryName.getText().toString());
+      exampleByCategoryIntent.putExtra("CATEGORY_ITEMS", (ArrayList) categoryItemList);
+      exampleByCategoryIntent.putExtra("TITLE", holder.categoryName.getText().toString());
 
-            mMainActivity.startActivity(exampleByCategoryIntent);
-        });
-    }
+      mMainActivity.startActivity(exampleByCategoryIntent);
+    });
+  }
 
-    @Override
-    public int getItemCount() {
-        return mExampleCategoriessList.size();
-    }
+  @Override
+  public int getItemCount() {
+    return mExampleCategoriessList.size();
+  }
 
-    public class ViewHolder extends RecyclerView.ViewHolder {
+  public class ViewHolder extends RecyclerView.ViewHolder {
 
-        @BindView(R.id.category_name) TextView categoryName;
-        @BindView(R.id.category_details) TextView categoryDetails;
+    @BindView(R.id.category_name)
+    TextView categoryName;
+    @BindView(R.id.category_details)
+    TextView categoryDetails;
 
-        public ViewHolder(View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-        }
+    public ViewHolder(View itemView) {
+      super(itemView);
+      ButterKnife.bind(this, itemView);
     }
+  }
 }