Student list activity

app/build.gradle

@@ -47,28 +47,28 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.appcompat:appcompat:1.0.0-rc01'
-    implementation 'androidx.legacy:legacy-support-v13:1.0.0-rc01'
-    implementation 'androidx.legacy:legacy-support-v4:1.0.0-rc01'
-    implementation 'androidx.cardview:cardview:1.0.0-rc01'
-    implementation 'androidx.recyclerview:recyclerview:1.0.0-rc01'
-    implementation 'androidx.browser:browser:1.0.0-rc01'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
-    implementation 'androidx.constraintlayout:constraintlayout-solver:1.1.2'
-    implementation 'androidx.coordinatorlayout:coordinatorlayout:1.0.0-rc01'
-    implementation 'com.google.android.material:material:1.0.0-rc01'
-    implementation 'com.google.firebase:firebase-core:16.0.1'
-    implementation 'com.google.firebase:firebase-database:16.0.1'
-    implementation 'com.google.firebase:firebase-messaging:17.1.0'
-    implementation 'com.google.firebase:firebase-storage:16.0.1'
+    implementation 'androidx.appcompat:appcompat:1.1.0-alpha01'
+    implementation 'androidx.legacy:legacy-support-v13:1.0.0'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.cardview:cardview:1.0.0'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0-alpha01'
+    implementation 'androidx.browser:browser:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.constraintlayout:constraintlayout-solver:1.1.3'
+    implementation 'androidx.coordinatorlayout:coordinatorlayout:1.1.0-alpha01'
+    implementation 'com.google.android.material:material:1.1.0-alpha02'
+    implementation 'com.google.firebase:firebase-core:16.0.6'
+    implementation 'com.google.firebase:firebase-database:16.0.5'
+    implementation 'com.google.firebase:firebase-messaging:17.3.4'
+    implementation 'com.google.firebase:firebase-storage:16.0.5'
     implementation 'com.facebook.fresco:fresco:1.10.0'
     implementation 'com.facebook.fresco:webpsupport:1.9.0'
     implementation 'io.reactivex.rxjava2:rxjava:2.1.16'
     implementation 'me.relex:photodraweeview:1.1.3'
-    implementation 'com.google.firebase:firebase-ml-vision:17.0.0'
+    implementation 'com.google.firebase:firebase-ml-vision:18.0.2'
     implementation 'com.github.gcacace:signature-pad:1.2.1'
     implementation 'com.github.chrisbanes:PhotoView:2.1.4'
-    def lifecycle_version = "2.0.0-rc01"
+    def lifecycle_version = "2.0.0"
     // ViewModel and LiveData
     implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
     implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

app/src/main/AndroidManifest.xml

@@ -14,7 +14,8 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme">
+        android:theme="@style/AppTheme"
+        android:largeHeap="true">
 
         <activity android:name=".activities.HomeActivity">
 
@@ -55,6 +56,9 @@
 
         <activity android:name=".activities.LoginActivity">
         </activity>
+
+        <activity android:name=".activities.ResidentActivity">
+        </activity>
         <meta-data
             android:name="com.google.firebase.ml.vision.DEPENDENCIES"
             android:value="barcode" />

app/src/main/java/com/macbitsgoa/prdrive/activities/HomeActivity.java

@@ -54,7 +54,6 @@ protected void onCreate(Bundle savedInstanceState) {
 
         String password;
         String prdrive_id;
-
         Button logout_btn;
 
         Realm.init(HomeActivity.this);

app/src/main/java/com/macbitsgoa/prdrive/activities/MerchActivity.java

@@ -1,5 +1,6 @@
 package com.macbitsgoa.prdrive.activities;
 
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.util.Log;
@@ -17,10 +18,16 @@
 import static com.macbitsgoa.prdrive.StaticHelperClass.finishbtn;
 public class MerchActivity extends AppCompatActivity {
 
+    // TODO: add necessary arguments to be passed via intent
+    public static void launchMerch(Context context) {
+        Intent intent = new Intent(context, MerchActivity.class);
+        context.startActivity(intent);
+    }
+
     @Override
     protected void onCreate (Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        androidx.appcompat.widget.Toolbar toolbar = null;
+        androidx.appcompat.widget.Toolbar toolbar;
         RecyclerView rv;
         setContentView(R.layout.activity_merch);
                                                   //Setting up the Finish order button.
@@ -69,7 +76,3 @@ protected void onCreate (Bundle savedInstanceState) {
     }
 
 }
-
-
-
-

app/src/main/java/com/macbitsgoa/prdrive/activities/ResidentActivity.java

@@ -0,0 +1,44 @@
+package com.macbitsgoa.prdrive.activities;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+import com.macbitsgoa.prdrive.R;
+import com.macbitsgoa.prdrive.adapters.ResidentAdapter;
+
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+
+public class ResidentActivity extends Activity {
+
+    public static final String INTENT_KEY_HOSTEL_NAME = ResidentActivity.class.getName() + ".intent.hostelName";
+
+    /**
+     * Use this method to launch this activity correctly.
+     *
+     * @param parent     from which this is to be launched.
+     * @param hostelName name of the target hostel.
+     */
+    public static void launchHostel(Context parent, String hostelName) {
+        Intent intent = new Intent(parent, ResidentActivity.class);
+        intent.putExtra(INTENT_KEY_HOSTEL_NAME, hostelName);
+        parent.startActivity(intent);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_resident);
+
+        Intent source = getIntent();
+        final String hostelName = source.getStringExtra(INTENT_KEY_HOSTEL_NAME);
+        RecyclerView rv;
+        rv = findViewById(R.id.list_rv);
+        rv.setLayoutManager(new LinearLayoutManager(ResidentActivity.this));
+        ResidentAdapter residentAdapter = new ResidentAdapter(hostelName);
+        rv.setAdapter(residentAdapter);
+    }
+}

app/src/main/java/com/macbitsgoa/prdrive/adapters/HomeAdapter.java

@@ -1,37 +1,53 @@
 package com.macbitsgoa.prdrive.adapters;
 
+import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import com.macbitsgoa.prdrive.R;
+import com.macbitsgoa.prdrive.Student;
 import com.macbitsgoa.prdrive.viewholders.HomeViewHolder;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
+import io.realm.Realm;
+import io.realm.RealmQuery;
+import io.realm.RealmResults;
 
 
 public class HomeAdapter extends RecyclerView.Adapter<HomeViewHolder> {
 
-
-    private String hostelNames[] = {"AH1", "AH2", "AH3", "AH4", "AH5", "AH6", "AH7",
-            "AH8", "AH9", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7", "DH1", "DH2"};
-
-
+    private List<String> hostelNames;
+
+    public HomeAdapter() {
+        hostelNames = new ArrayList<>();
+        Realm realm = Realm.getDefaultInstance();
+        RealmQuery<Student> query = realm.where(Student.class).distinct("hostel");
+        RealmResults<Student> results = query.findAll();
+        for (Student s : results) {
+            hostelNames.add(s.hostel);
+        }
+        realm.close();
+    }
 
     @NonNull
     @Override
     public HomeViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        return new HomeViewHolder(View.inflate(parent.getContext(), R.layout.item_format_home, null),
-                                    parent.getContext());
+        View v = LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.item_format_home, parent, false);
+        return new HomeViewHolder(v);
     }
 
     @Override
     public void onBindViewHolder(@NonNull HomeViewHolder holder, int position) {
-        holder.populate(hostelNames[position]);
+        holder.populate(hostelNames.get(position));
     }
 
     @Override
     public int getItemCount() {
-        return hostelNames.length;
+        return hostelNames.size();
     }
 }

app/src/main/java/com/macbitsgoa/prdrive/adapters/ResidentAdapter.java

@@ -0,0 +1,45 @@
+package com.macbitsgoa.prdrive.adapters;
+
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+import com.macbitsgoa.prdrive.R;
+import com.macbitsgoa.prdrive.Student;
+import com.macbitsgoa.prdrive.viewholders.ResidentViewHolder;
+
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+import io.realm.Realm;
+import io.realm.RealmQuery;
+import io.realm.RealmResults;
+
+public class ResidentAdapter extends RecyclerView.Adapter<ResidentViewHolder> {
+
+    private List<Student> students;
+
+    public ResidentAdapter(String hostel) {
+        Realm realm = Realm.getDefaultInstance();
+        RealmQuery<Student> query = realm.where(Student.class).equalTo("hostel", hostel);
+        RealmResults<Student> results = query.findAll();
+        students = realm.copyFromRealm(results);
+        realm.close();
+    }
+
+    @Override
+    public ResidentViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        return new ResidentViewHolder(LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.item_format_resident, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ResidentViewHolder holder, int position) {
+        holder.populate(students.get(position));
+    }
+
+    @Override
+    public int getItemCount() {
+        return students.size();
+    }
+}

app/src/main/java/com/macbitsgoa/prdrive/viewholders/HomeViewHolder.java

@@ -1,8 +1,5 @@
 package com.macbitsgoa.prdrive.viewholders;
 
-import android.app.Activity;
-import android.content.Context;
-import android.content.Intent;
 import android.util.Log;
 import android.view.View;
 import android.widget.TextView;
@@ -15,37 +12,32 @@
 import com.google.firebase.database.ValueEventListener;
 import com.macbitsgoa.prdrive.BuildConfig;
 import com.macbitsgoa.prdrive.R;
-import com.macbitsgoa.prdrive.activities.MerchActivity;
 
 import java.util.Objects;
 
 import androidx.annotation.NonNull;
 import androidx.cardview.widget.CardView;
 import androidx.recyclerview.widget.RecyclerView;
-import static com.macbitsgoa.prdrive.StaticHelperClass.hostelname;
 
-public class HomeViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
+import static com.macbitsgoa.prdrive.activities.ResidentActivity.launchHostel;
 
-    private TextView hostelName;
-    private Context context;
-    private Activity activity;
-    private DatabaseReference databaseReference = FirebaseDatabase
-            .getInstance().getReference().child(BuildConfig.BUILD_TYPE).child("main").child("orgInfo").child("prdrive-meta");
+public class HomeViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
 
+    private TextView hostelNameTv;
+    private DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference().child(BuildConfig.BUILD_TYPE)
+            .child("main").child("orgInfo").child("prdrive-meta");
+    private CardView cardView;
 
-    public HomeViewHolder(View itemView, Context context) {
+
+    public HomeViewHolder(View itemView) {
         super(itemView);
-        CardView cardView;
-        this.context = context;
-        this.activity = (Activity) this.context;
-        hostelName = itemView.findViewById(R.id.ifhometv);
+        hostelNameTv = itemView.findViewById(R.id.ifhometv);
         cardView = itemView.findViewById(R.id.ifhomecard);
-        cardView.setOnClickListener(this);
-
     }
 
-    public void populate(@NonNull final String str) {
-        hostelName.setText(str);
+    public void populate(@NonNull final String hostel) {
+        hostelNameTv.setText(hostel);
+        cardView.setOnClickListener(this);
     }
 
     @Override
@@ -56,19 +48,17 @@ public void onClick(View view) {
             @Override
             public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                 Log.e("data1", dataSnapshot.getKey());
-                for (DataSnapshot child: dataSnapshot.getChildren()) {
+                for (DataSnapshot child : dataSnapshot.getChildren()) {
                     Log.e("data1", child.getKey());
                     killSwitch[0] = Objects.requireNonNull(child.child("killSwitch").getValue(String.class));
                 }
                 if (killSwitch[0].equals("1")) {
-                    Intent intent = new Intent(context, MerchActivity.class);
-                    hostelname = hostelName.getText().toString();
-                    context.startActivity(intent);
-                    activity.finish();
-                }
-                else {
+                    String hostelName = hostelNameTv.getText().toString();
+                    launchHostel(itemView.getContext(), hostelName);
+                    //activity.finish();
+                } else {
                     //activity.finish();
-                    Toast.makeText(context, "not allowed", Toast.LENGTH_SHORT).show();
+                    Toast.makeText(itemView.getContext(), "not allowed", Toast.LENGTH_SHORT).show();
                 }
             }
 
@@ -77,7 +67,7 @@ public void onCancelled(@NonNull DatabaseError databaseError) {
 
             }
         });
-        Log.e("data", ""+killSwitch[0]);
+        Log.e("data", "" + killSwitch[0]);
 
     }
 }

app/src/main/java/com/macbitsgoa/prdrive/viewholders/ResidentViewHolder.java

@@ -0,0 +1,36 @@
+package com.macbitsgoa.prdrive.viewholders;
+
+import android.view.View;
+import android.widget.TextView;
+
+import com.macbitsgoa.prdrive.R;
+import com.macbitsgoa.prdrive.Student;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import static com.macbitsgoa.prdrive.activities.MerchActivity.launchMerch;
+
+
+public class ResidentViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
+
+    public TextView nameTv;
+    public TextView roomNoTv;
+
+    public ResidentViewHolder(@NonNull View itemView) {
+        super(itemView);
+        nameTv = itemView.findViewById(R.id.tv_name);
+        roomNoTv = itemView.findViewById(R.id.tv_room_no);
+    }
+
+    public void populate(Student student) {
+        nameTv.setText(student.name);
+        roomNoTv.setText(student.roomNo);
+        itemView.setOnClickListener(this);
+    }
+
+    @Override
+    public void onClick(View view) {
+        launchMerch(itemView.getContext());
+    }
+}