Implement News Feed API

.idea/modules.xml

@@ -3,6 +3,7 @@
   <component name="ProjectModuleManager">
     <modules>
       <module fileurl="file://$PROJECT_DIR$/IITB-App.iml" filepath="$PROJECT_DIR$/IITB-App.iml" />
+      <module fileurl="file://$PROJECT_DIR$/IITBApp.iml" filepath="$PROJECT_DIR$/IITBApp.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
     </modules>
   </component>

app/build.gradle

@@ -28,6 +28,7 @@ ext {
     appAuthVersion = '0.2.0'
     retrofitVersion = '2.1.0'
     okhttpVersion = '3.4.1'
+    picassoVersion = '2.5.0'
 
 }
 
@@ -49,5 +50,6 @@ dependencies {
     compile "com.squareup.retrofit2:converter-gson:${retrofitVersion}"
     compile "com.squareup.okhttp3:okhttp:${okhttpVersion}"
     compile "com.squareup.okhttp3:logging-interceptor:${okhttpVersion}"
+    compile "com.squareup.picasso:picasso:${picassoVersion}"
 }
 apply plugin: 'com.google.gms.google-services'

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/ItemClickListener.java

+package in.ac.iitb.gymkhana.iitbapp;
+
+import android.view.View;
+
+public interface ItemClickListener {
+    void onItemClick(View v, int position);
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/adapter/FeedAdapter.java

+package in.ac.iitb.gymkhana.iitbapp.adapter;
+
+import android.content.Context;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.squareup.picasso.Picasso;
+
+import java.util.List;
+
+import in.ac.iitb.gymkhana.iitbapp.ItemClickListener;
+import in.ac.iitb.gymkhana.iitbapp.R;
+import in.ac.iitb.gymkhana.iitbapp.api.model.Event;
+
+public class FeedAdapter extends RecyclerView.Adapter<FeedAdapter.ViewHolder> {
+
+    private List<Event> posts;
+    private Context context;
+    private ItemClickListener itemClickListener;
+
+    public FeedAdapter(List<Event> posts, ItemClickListener itemClickListener) {
+        this.posts = posts;
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
+        context = viewGroup.getContext();
+        LayoutInflater inflater = LayoutInflater.from(context);
+        View postView = inflater.inflate(R.layout.post, viewGroup, false);
+
+        final ViewHolder postViewHolder = new ViewHolder(postView);
+        postView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                itemClickListener.onItemClick(v, postViewHolder.getAdapterPosition());
+            }
+        });
+        return postViewHolder;
+    }
+
+    @Override
+    public void onBindViewHolder(ViewHolder viewHolder, int i) {
+        Event currentEvent = posts.get(i);
+        viewHolder.eventTitle.setText(currentEvent.getEventName());
+        viewHolder.eventDetails.setText(currentEvent.getEventDescription());
+        Picasso.with(context).load(currentEvent.getEventImage()).into(viewHolder.eventPicture);
+    }
+
+    @Override
+    public int getItemCount() {
+        return posts.size();
+    }
+
+    public class ViewHolder extends RecyclerView.ViewHolder {
+        private ImageView eventPicture;
+        private TextView eventTitle;
+        private TextView eventDetails;
+        private ImageView eventEnthu;
+
+        public ViewHolder(View itemView) {
+            super(itemView);
+
+            eventPicture = (ImageView) itemView.findViewById(R.id.event_picture);
+            eventTitle = (TextView) itemView.findViewById(R.id.event_title);
+            eventDetails = (TextView) itemView.findViewById(R.id.event_details);
+            eventEnthu = (ImageView) itemView.findViewById(R.id.event_enthu);
+        }
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/RetrofitInterface.java

@@ -2,11 +2,18 @@ package in.ac.iitb.gymkhana.iitbapp.api;
 
 import in.ac.iitb.gymkhana.iitbapp.api.model.LoginRequest;
 import in.ac.iitb.gymkhana.iitbapp.api.model.LoginResponse;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedRequest;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedResponse;
 import retrofit2.Call;
 import retrofit2.http.Body;
+import retrofit2.http.GET;
 import retrofit2.http.POST;
+import retrofit2.http.PUT;
 
 public interface RetrofitInterface {
-    @POST("/login/")
+    @POST("login/")
     Call<LoginResponse> login(@Body LoginRequest loginRequest);
+
+    @GET("getNewsFeed/")
+    Call<NewsFeedResponse> getNewsFeed(@Body NewsFeedRequest newsFeedRequest);
 }

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/model/Event.java

+package in.ac.iitb.gymkhana.iitbapp.api.model;
+
+import com.google.gson.annotations.SerializedName;
+
+public class Event {
+    @SerializedName("event_name")
+    String eventName;
+    @SerializedName("event_description")
+    String eventDescription;
+    @SerializedName("event_image")
+    String eventImage;
+    @SerializedName("event_creator_name")
+    String eventCreatorName;
+    @SerializedName("event_creator_id")
+    String eventCreatorId;
+    @SerializedName("event_going_status")
+    int eventEnthu;
+
+    public Event(String eventName, String eventDescription, String eventImage, String eventCreatorName, String eventCreatorId, int eventEnthu) {
+        this.eventName = eventName;
+        this.eventDescription = eventDescription;
+        this.eventImage = eventImage;
+        this.eventCreatorName = eventCreatorName;
+        this.eventCreatorId = eventCreatorId;
+        this.eventEnthu = eventEnthu;
+    }
+
+    public String getEventName() {
+        return eventName;
+    }
+
+    public void setEventName(String eventName) {
+        this.eventName = eventName;
+    }
+
+    public String getEventDescription() {
+        return eventDescription;
+    }
+
+    public void setEventDescription(String eventDescription) {
+        this.eventDescription = eventDescription;
+    }
+
+    public String getEventImage() {
+        return eventImage;
+    }
+
+    public void setEventImage(String eventImage) {
+        this.eventImage = eventImage;
+    }
+
+    public String getEventCreatorName() {
+        return eventCreatorName;
+    }
+
+    public void setEventCreatorName(String eventCreatorName) {
+        this.eventCreatorName = eventCreatorName;
+    }
+
+    public String getEventCreatorId() {
+        return eventCreatorId;
+    }
+
+    public void setEventCreatorId(String eventCreatorId) {
+        this.eventCreatorId = eventCreatorId;
+    }
+
+    public int getEventEnthu() {
+        return eventEnthu;
+    }
+
+    public void setEventEnthu(int eventEnthu) {
+        this.eventEnthu = eventEnthu;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/model/NewsFeedRequest.java

+package in.ac.iitb.gymkhana.iitbapp.api.model;
+
+public class NewsFeedRequest {
+    public static final int FOLLOWED = 0;
+    public static final int POPULAR = 1;
+
+    private int type;
+    private int from;
+    private int to;
+
+    public NewsFeedRequest(int type, int from, int to) {
+        this.type = type;
+        this.from = from;
+        this.to = to;
+    }
+
+    public int getType() {
+        return type;
+    }
+
+    public void setType(int type) {
+        this.type = type;
+    }
+
+    public int getFrom() {
+        return from;
+    }
+
+    public void setFrom(int from) {
+        this.from = from;
+    }
+
+    public int getTo() {
+        return to;
+    }
+
+    public void setTo(int to) {
+        this.to = to;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/model/NewsFeedResponse.java

+package in.ac.iitb.gymkhana.iitbapp.api.model;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.util.List;
+
+public class NewsFeedResponse {
+    @SerializedName("posts")
+    private List<Event> events;
+
+    public NewsFeedResponse(List<Event> events) {
+        this.events = events;
+    }
+
+    public List<Event> getEvents() {
+        return events;
+    }
+
+    public void setEvents(List<Event> events) {
+        this.events = events;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/fragment/FeedFragment.java

@@ -3,17 +3,32 @@ package in.ac.iitb.gymkhana.iitbapp.fragment;
 
 import android.os.Bundle;
 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 java.util.List;
+
+import in.ac.iitb.gymkhana.iitbapp.ItemClickListener;
 import in.ac.iitb.gymkhana.iitbapp.R;
+import in.ac.iitb.gymkhana.iitbapp.adapter.FeedAdapter;
+import in.ac.iitb.gymkhana.iitbapp.api.RetrofitInterface;
+import in.ac.iitb.gymkhana.iitbapp.api.ServiceGenerator;
+import in.ac.iitb.gymkhana.iitbapp.api.model.Event;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedRequest;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedResponse;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
 
 /**
  * A simple {@link Fragment} subclass.
  */
 public class FeedFragment extends Fragment {
 
+    RecyclerView feedRecyclerView;
 
     public FeedFragment() {
         // Required empty public constructor
@@ -27,4 +42,36 @@ public class FeedFragment extends Fragment {
         return inflater.inflate(R.layout.fragment_feed, container, false);
     }
 
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        NewsFeedRequest newsFeedRequest = new NewsFeedRequest(NewsFeedRequest.FOLLOWED, 0, 20);
+        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        retrofitInterface.getNewsFeed().enqueue(new Callback<NewsFeedResponse>() {
+            @Override
+            public void onResponse(Call<NewsFeedResponse> call, Response<NewsFeedResponse> response) {
+                if (response.isSuccessful()) {
+                    NewsFeedResponse newsFeedResponse = response.body();
+                    List<Event> events = newsFeedResponse.getEvents();
+
+                    FeedAdapter feedAdapter = new FeedAdapter(events, new ItemClickListener() {
+                        @Override
+                        public void onItemClick(View v, int position) {
+                            // TODO: Launch EventFragment
+                        }
+                    });
+                    feedRecyclerView = (RecyclerView) getActivity().findViewById(R.id.feed_recycler_view);
+                    feedRecyclerView.setAdapter(feedAdapter);
+                    feedRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+                }
+                //Server Error
+            }
+
+            @Override
+            public void onFailure(Call<NewsFeedResponse> call, Throwable t) {
+                //Network Error
+            }
+        });
+    }
 }

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

@@ -4,10 +4,9 @@
     android:layout_height="match_parent"
     tools:context="in.ac.iitb.gymkhana.iitbapp.fragment.FeedFragment">
 
-    <!-- TODO: Update blank fragment layout -->
-    <TextView
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/feed_recycler_view"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:text="@string/hello_blank_fragment" />
+        android:layout_height="match_parent" />
 
 </FrameLayout>

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

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingTop="8dp"
+    android:orientation="horizontal">
+
+    <ImageView
+        android:layout_weight="1"
+        android:layout_width="0dp"
+        android:id="@+id/event_picture"
+        android:layout_height="50dp" />
+
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="0dp"
+        android:layout_weight="3"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:textColor="@android:color/black"
+            android:textSize="24sp"
+            android:id="@+id/event_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <TextView
+            android:id="@+id/event_details"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+    </LinearLayout>
+
+    <ImageView
+        android:src="@drawable/ic_input_add"
+        android:id="@+id/event_enthu"
+        android:layout_width="0dp"
+        android:layout_weight="1"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>
\ No newline at end of file