user search

app/src/main/java/com/dowerx/quack/activity/SwitcherActivity.java

@@ -15,10 +15,13 @@ import com.dowerx.quack.fragment.FeedFragment;
 import com.dowerx.quack.fragment.NewPostFragment;
 import com.dowerx.quack.fragment.ProfileFragment;
 import com.dowerx.quack.R;
+import com.dowerx.quack.fragment.SearchFragment;
 import com.google.android.material.navigation.NavigationBarView;
 
 public class SwitcherActivity extends AppCompatActivity implements NavigationBarView.OnItemSelectedListener, NavigationBarView.OnItemReselectedListener {
 
+    private String userId = "";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -38,6 +41,7 @@ public class SwitcherActivity extends AppCompatActivity implements NavigationBar
 
     @Override
     public void onNavigationItemReselected(@NonNull MenuItem menuItem) {
+        this.userId = "";
         this.onNavigationItemSelected(menuItem);
     }
 
@@ -45,10 +49,12 @@ public class SwitcherActivity extends AppCompatActivity implements NavigationBar
     public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
         if (menuItem.getItemId() == R.id.nav_feed) {
             loadFragment(new FeedFragment());
+        } else if (menuItem.getItemId() == R.id.nav_search) {
+            loadFragment(new SearchFragment());
         } else if (menuItem.getItemId() == R.id.nav_post) {
             loadFragment(new NewPostFragment());
         } else if (menuItem.getItemId() == R.id.nav_profile) {
-            loadFragment(new ProfileFragment());
+            loadFragment(ProfileFragment.newInstance(userId));
         }
         return true;
     }
@@ -61,4 +67,8 @@ public class SwitcherActivity extends AppCompatActivity implements NavigationBar
                     .commit();
         }
     }
+
+    public void setUser(String id) {
+        this.userId = id;
+    }
 }

app/src/main/java/com/dowerx/quack/fragment/ProfileFragment.java

@@ -40,7 +40,7 @@ public class ProfileFragment extends Fragment implements LoaderManager.LoaderCal
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (getArguments() != null) {
+        if (getArguments() != null && !getArguments().getString(ID).isEmpty()) {
             id = getArguments().getString(ID);
         } else {
             id = AuthService.getId();

app/src/main/java/com/dowerx/quack/fragment/SearchFragment.java

@@ -0,0 +1,85 @@
+package com.dowerx.quack.fragment;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.loader.app.LoaderManager;
+import androidx.loader.content.Loader;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import com.dowerx.quack.R;
+import com.dowerx.quack.activity.SwitcherActivity;
+import com.dowerx.quack.model.User;
+import com.dowerx.quack.service.UserService;
+
+import java.util.List;
+
+public class SearchFragment extends Fragment implements LoaderManager.LoaderCallbacks<List<User>> {
+
+    private RecyclerView recyclerView;
+    private EditText query;
+
+    public SearchFragment() {
+    }
+
+
+    public static SearchFragment newInstance() {
+        SearchFragment fragment = new SearchFragment();
+        Bundle args = new Bundle();
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (getArguments() != null) {
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_search_list, container, false);
+
+        Context context = view.getContext();
+        recyclerView = view.findViewById(R.id.list);
+        recyclerView.setLayoutManager(new LinearLayoutManager(context));
+
+        query = view.findViewById(R.id.query);
+        LoaderManager.getInstance(this).initLoader(1, null, this);
+        view.findViewById(R.id.search).setOnClickListener(v -> {
+            LoaderManager.getInstance(this).destroyLoader(1);
+            LoaderManager.getInstance(this).initLoader(1, null, this);
+        });
+
+        return view;
+    }
+
+    @NonNull
+    @Override
+    public Loader<List<User>> onCreateLoader(int id, @Nullable Bundle args) {
+        return new UserService.SearchUsername(query.getText().toString(), getContext());
+    }
+
+    @Override
+    public void onLoadFinished(@NonNull Loader<List<User>> loader, List<User> data) {
+        recyclerView.setAdapter(new UserRecyclerViewAdapter(data, (SwitcherActivity) getContext()));
+    }
+
+    @Override
+    public void onLoaderReset(@NonNull Loader<List<User>> loader) {
+
+    }
+}

app/src/main/java/com/dowerx/quack/fragment/UserRecyclerViewAdapter.java

@@ -0,0 +1,66 @@
+package com.dowerx.quack.fragment;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.app.Activity;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.TextView;
+
+import com.dowerx.quack.R;
+import com.dowerx.quack.activity.SwitcherActivity;
+import com.dowerx.quack.databinding.FragmentUserBinding;
+import com.dowerx.quack.model.User;
+import androidx.fragment.app.Fragment;
+
+
+import java.util.List;
+
+public class UserRecyclerViewAdapter extends RecyclerView.Adapter<UserRecyclerViewAdapter.ViewHolder> {
+
+    private final List<User> mValues;
+    private final SwitcherActivity activity;
+
+    public UserRecyclerViewAdapter(List<User> items, SwitcherActivity activity) {
+        this.mValues = items;
+        this.activity = activity;
+    }
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        return new ViewHolder(FragmentUserBinding.inflate(LayoutInflater.from(parent.getContext()), parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(final ViewHolder holder, int position) {
+        holder.mItem = mValues.get(position);
+        holder.username.setText(holder.mItem.getUsername());
+        holder.profile_button.setOnClickListener(v -> {
+            activity.setUser(holder.mItem.getId());
+            activity.findViewById(R.id.nav_profile).performClick();
+        });
+    }
+
+    @Override
+    public int getItemCount() {
+        return mValues.size();
+    }
+
+    public class ViewHolder extends RecyclerView.ViewHolder {
+        public final TextView username;
+        public final Button profile_button;
+        public User mItem;
+
+        public ViewHolder(FragmentUserBinding binding) {
+            super(binding.getRoot());
+            username = binding.username;
+            profile_button = binding.profileButton;
+        }
+
+        @Override
+        public String toString() {
+            return super.toString() + " '" + username.getText() + "'";
+        }
+    }
+}

app/src/main/java/com/dowerx/quack/service/UserService.java

@@ -5,6 +5,7 @@ import android.content.Context;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.loader.content.AsyncTaskLoader;
+import androidx.loader.content.Loader;
 
 import com.dowerx.quack.model.Post;
 import com.dowerx.quack.model.User;
@@ -78,4 +79,43 @@ public class UserService {
             forceLoad();
         }
     }
+
+    public static class SearchUsername extends AsyncTaskLoader<List<User>> {
+        private final String username;
+
+        public SearchUsername(String username, Context context) {
+            super(context);
+            this.username = username;
+        }
+
+        @Nullable
+        @Override
+        public List<User> loadInBackground() {
+            List<User> users = new LinkedList<>();
+            try {
+                FirebaseFirestore db = FirebaseFirestore.getInstance();
+                // firestore doesn't have full-string search
+                // ugly, but i have to filter it myself
+                QuerySnapshot result = Tasks.await(db.collection("user").get());
+
+                for (DocumentSnapshot doc : result) {
+                    if (doc.getString("username").contains(username)) {
+                        users.add(new User(
+                                doc.getString("username"),
+                                doc.getString("email"),
+                                doc.getString("id")
+                        ));
+                    }
+                }
+            } catch (Exception e) {
+            }
+
+            return users;
+        }
+
+        @Override
+        protected void onStartLoading() {
+            forceLoad();
+        }
+    }
 }

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

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <EditText
+        android:id="@+id/query"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        app:layout_constraintEnd_toStartOf="@+id/search"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:hint="@string/username_hint"
+        android:autofillHints="username,search"
+        android:layout_margin="20dp"/>
+
+    <Button
+        android:id="@+id/search"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:text="@string/search_btn"
+        android:layout_margin="20dp"/>
+
+    <androidx.recyclerview.widget.RecyclerView
+
+        android:id="@+id/list"
+        android:name="com.dowerx.quack.fragment.SearchFragment"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layoutManager="LinearLayoutManager"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/query"
+        tools:context=".fragment.SearchFragment"
+        tools:listitem="@layout/fragment_user" />
+</androidx.constraintlayout.widget.ConstraintLayout>
+

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

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal">
+
+    <TextView
+        android:id="@+id/username"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="20dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/profile_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/view_profile"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_margin="20dp"/>
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -16,4 +16,95 @@
     <string name="hello_blank_fragment">Hello blank fragment</string>
     <string name="post_btn">Post</string>
     <string name="remove_btn">Remove</string>
+    <string name="large_text">
+        "Material is the metaphor.\n\n"
+
+        "A material metaphor is the unifying theory of a rationalized space and a system of motion."
+        "The material is grounded in tactile reality, inspired by the study of paper and ink, yet "
+        "technologically advanced and open to imagination and magic.\n"
+        "Surfaces and edges of the material provide visual cues that are grounded in reality. The "
+        "use of familiar tactile attributes helps users quickly understand affordances. Yet the "
+        "flexibility of the material creates new affordances that supercede those in the physical "
+        "world, without breaking the rules of physics.\n"
+        "The fundamentals of light, surface, and movement are key to conveying how objects move, "
+        "interact, and exist in space and in relation to each other. Realistic lighting shows "
+        "seams, divides space, and indicates moving parts.\n\n"
+
+        "Bold, graphic, intentional.\n\n"
+
+        "The foundational elements of print based design typography, grids, space, scale, color, "
+        "and use of imagery guide visual treatments. These elements do far more than please the "
+        "eye. They create hierarchy, meaning, and focus. Deliberate color choices, edge to edge "
+        "imagery, large scale typography, and intentional white space create a bold and graphic "
+        "interface that immerse the user in the experience.\n"
+        "An emphasis on user actions makes core functionality immediately apparent and provides "
+        "waypoints for the user.\n\n"
+
+        "Motion provides meaning.\n\n"
+
+        "Motion respects and reinforces the user as the prime mover. Primary user actions are "
+        "inflection points that initiate motion, transforming the whole design.\n"
+        "All action takes place in a single environment. Objects are presented to the user without "
+        "breaking the continuity of experience even as they transform and reorganize.\n"
+        "Motion is meaningful and appropriate, serving to focus attention and maintain continuity. "
+        "Feedback is subtle yet clear. Transitions are efficient yet coherent.\n\n"
+
+        "3D world.\n\n"
+
+        "The material environment is a 3D space, which means all objects have x, y, and z "
+        "dimensions. The z-axis is perpendicularly aligned to the plane of the display, with the "
+        "positive z-axis extending towards the viewer. Every sheet of material occupies a single "
+        "position along the z-axis and has a standard 1dp thickness.\n"
+        "On the web, the z-axis is used for layering and not for perspective. The 3D world is "
+        "emulated by manipulating the y-axis.\n\n"
+
+        "Light and shadow.\n\n"
+
+        "Within the material environment, virtual lights illuminate the scene. Key lights create "
+        "directional shadows, while ambient light creates soft shadows from all angles.\n"
+        "Shadows in the material environment are cast by these two light sources. In Android "
+        "development, shadows occur when light sources are blocked by sheets of material at "
+        "various positions along the z-axis. On the web, shadows are depicted by manipulating the "
+        "y-axis only. The following example shows the card with a height of 6dp.\n\n"
+
+        "Resting elevation.\n\n"
+
+        "All material objects, regardless of size, have a resting elevation, or default elevation "
+        "that does not change. If an object changes elevation, it should return to its resting "
+        "elevation as soon as possible.\n\n"
+
+        "Component elevations.\n\n"
+
+        "The resting elevation for a component type is consistent across apps (e.g., FAB elevation "
+        "does not vary from 6dp in one app to 16dp in another app).\n"
+        "Components may have different resting elevations across platforms, depending on the depth "
+        "of the environment (e.g., TV has a greater depth than mobile or desktop).\n\n"
+
+        "Responsive elevation and dynamic elevation offsets.\n\n"
+
+        "Some component types have responsive elevation, meaning they change elevation in response "
+        "to user input (e.g., normal, focused, and pressed) or system events. These elevation "
+        "changes are consistently implemented using dynamic elevation offsets.\n"
+        "Dynamic elevation offsets are the goal elevation that a component moves towards, relative "
+        "to the component’s resting state. They ensure that elevation changes are consistent "
+        "across actions and component types. For example, all components that lift on press have "
+        "the same elevation change relative to their resting elevation.\n"
+        "Once the input event is completed or cancelled, the component will return to its resting "
+        "elevation.\n\n"
+
+        "Avoiding elevation interference.\n\n"
+
+        "Components with responsive elevations may encounter other components as they move between "
+        "their resting elevations and dynamic elevation offsets. Because material cannot pass "
+        "through other material, components avoid interfering with one another any number of ways, "
+        "whether on a per component basis or using the entire app layout.\n"
+        "On a component level, components can move or be removed before they cause interference. "
+        "For example, a floating action button (FAB) can disappear or move off screen before a "
+        "user picks up a card, or it can move if a snackbar appears.\n"
+        "On the layout level, design your app layout to minimize opportunities for interference. "
+        "For example, position the FAB to one side of stream of a cards so the FAB won’t interfere "
+        "when a user tries to pick up one of cards.\n\n"
+    </string>
+    <string name="search_btn">Search</string>
+    <string name="view_profile">View</string>
 </resources>