recreated the unsplash tags with recyclerview - fixed the search and …

…fragment navigation in unsplash fragment

app/src/main/AndroidManifest.xml

@@ -47,7 +47,6 @@
                 <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
             </intent-filter>
         </receiver>
-
     </application>
 
 </manifest>

app/src/main/java/ml/medyas/wallbay/adapters/unsplash/CollectionRecyclerViewAdapter.java

@@ -1,25 +1,35 @@
 package ml.medyas.wallbay.adapters.unsplash;
 
 import android.arch.paging.PagedListAdapter;
+import android.content.Context;
 import android.databinding.DataBindingUtil;
 import android.support.annotation.NonNull;
+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.ArrayList;
+import java.util.List;
+
 import ml.medyas.wallbay.R;
 import ml.medyas.wallbay.databinding.CollectionItemLayoutBinding;
 import ml.medyas.wallbay.entities.CollectionEntity;
+import ml.medyas.wallbay.entities.unsplash.Tag;
 
 import static ml.medyas.wallbay.entities.CollectionEntity.DIFF_CALLBACK;
 
 public class CollectionRecyclerViewAdapter extends PagedListAdapter<CollectionEntity, CollectionRecyclerViewAdapter.CollectionViewHolder> {
     private CollectionInterface mListener;
+    private TagsRecyclerViewAdapter.OnTagItemClicked tagListener;
+    private Context context;
 
-    public CollectionRecyclerViewAdapter(CollectionInterface listener) {
+    public CollectionRecyclerViewAdapter(CollectionInterface listener, TagsRecyclerViewAdapter.OnTagItemClicked tagListener, Context context) {
         super(DIFF_CALLBACK);
         this.mListener = listener;
+        this.tagListener = tagListener;
+        this.context = context;
     }
 
     public interface CollectionInterface {
@@ -44,6 +54,18 @@ public void onClick(View view) {
                     mListener.onCollectionItemClicked(getItem(holder.getAdapterPosition()));
                 }
             });
+
+            if(getItem(i).getTags() != null) {
+                List<String> list = new ArrayList<>();
+                for (Tag tag : getItem(i).getTags()) {
+                    list.add(tag.getTitle());
+                }
+                TagsRecyclerViewAdapter mAdapter = new TagsRecyclerViewAdapter(list, tagListener);
+                holder.itemLayoutBinding.collectionTags.setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false));
+                holder.itemLayoutBinding.collectionTags.setHasFixedSize(true);
+                holder.itemLayoutBinding.collectionTags.setAdapter(mAdapter);
+
+            }
         }
     }
 

app/src/main/java/ml/medyas/wallbay/adapters/unsplash/TagsRecyclerViewAdapter.java

@@ -0,0 +1,65 @@
+package ml.medyas.wallbay.adapters.unsplash;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import java.util.List;
+
+import ml.medyas.wallbay.R;
+
+public class TagsRecyclerViewAdapter extends RecyclerView.Adapter<TagsRecyclerViewAdapter.TagsRecyclerViewViewHolder> {
+    private List<String> items;
+    private OnTagItemClicked mListener;
+
+    public interface OnTagItemClicked {
+        void onTagItemClicked(String query);
+    }
+
+    public TagsRecyclerViewAdapter(List<String> items, OnTagItemClicked mListener) {
+        this.items = items;
+        this.mListener = mListener;
+    }
+
+    @Override
+    public TagsRecyclerViewViewHolder onCreateViewHolder(ViewGroup parent,
+                                                         int viewType) {
+        View v = LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.tags_layout_item, parent, false);
+        return new TagsRecyclerViewViewHolder(v);
+    }
+
+    @Override
+    public void onBindViewHolder(TagsRecyclerViewViewHolder holder, int position) {
+        final String item = items.get(position);
+
+        holder.itemTag.setText(item);
+        holder.itemTag.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                mListener.onTagItemClicked(item);
+            }
+        });
+
+    }
+
+    @Override
+    public int getItemCount() {
+        if (items == null) {
+            return 0;
+        }
+        return items.size();
+    }
+
+    public class TagsRecyclerViewViewHolder extends RecyclerView.ViewHolder {
+        private TextView itemTag;
+
+        public TagsRecyclerViewViewHolder(View itemView) {
+            super(itemView);
+
+            itemTag = itemView.findViewById(R.id.item_tag);
+        }
+    }
+}

app/src/main/java/ml/medyas/wallbay/entities/CollectionEntity.java

@@ -2,17 +2,12 @@
 
 import android.arch.persistence.room.Ignore;
 import android.databinding.BindingAdapter;
-import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.support.annotation.NonNull;
-import android.support.annotation.RequiresApi;
 import android.support.v7.util.DiffUtil;
-import android.view.View;
 import android.widget.ImageView;
-import android.widget.LinearLayout;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import java.util.List;
 
@@ -70,6 +65,7 @@ public static void setTotalPhotosNumber(TextView text, int number) {
         text.setText(String.format("%d\nPhotos", number));
     }
 
+    /*
     @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
     @BindingAdapter({"android:load_tags"})
     public static void setTags(LinearLayout view, List<Tag> tags) {
@@ -93,7 +89,7 @@ public void onClick(View view) {
                 view.addView(textView);
             }
         }
-    }
+    }*/
 
 
     public CollectionEntity() {

app/src/main/java/ml/medyas/wallbay/ui/activities/MainActivity.java

@@ -6,8 +6,10 @@
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.os.Handler;
 import android.preference.PreferenceManager;
 import android.support.v4.app.Fragment;
+import android.support.v4.view.ViewCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.transition.TransitionInflater;
 import android.view.Gravity;
@@ -47,10 +49,12 @@ public class MainActivity extends AppCompatActivity implements GetStartedFragmen
     public static final String FIRST_START = "first_start";
     public static final String TOOLBAR_VISIBILITY = "toolbar_visibility";
     public static final String FAVORITE_SHOWN = "FAVORITE_SHOWN";
+    public static final String FRAGMENT_STACK = "FRAGMENT_STACK";
 
     private ActivityMainBinding binding;
     private FavoriteViewModel favoriteViewModel;
     private boolean addedFragmentShown = false;
+    private int fragmentStack =  0;
 
     //TODO 1: Create fragments UI : For You
     //• Pixabay
@@ -82,6 +86,7 @@ protected void onCreate(Bundle savedInstanceState) {
             binding.content.coordinator.setVisibility(View.VISIBLE);
             showToolbar(savedInstanceState.getBoolean(TOOLBAR_VISIBILITY));
             setUpToolbar(!savedInstanceState.getBoolean(FAVORITE_SHOWN));
+            fragmentStack = savedInstanceState.getInt(FRAGMENT_STACK);
         }
 
         binding.navigation.setOnInflateListener(new ViewStub.OnInflateListener() {
@@ -105,7 +110,6 @@ protected void onResume() {
     private void setUpToolbar(final boolean setup) {
         if (setup) {
             addedFragmentShown = false;
-            //getSupportActionBar().setTitle(getString(R.string.app_name));
             binding.content.toolbar.setNavigationIcon(R.drawable.ic_menu_black_24dp);
             binding.content.toolbar.setNavigationOnClickListener(new View.OnClickListener() {
                 @Override
@@ -121,7 +125,6 @@ public void onClick(View view) {
                 @Override
                 public void onClick(View view) {
                     onBackPressed();
-                    setUpToolbar(true);
                 }
             });
         }
@@ -142,21 +145,46 @@ protected void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putBoolean(TOOLBAR_VISIBILITY, binding.content.toolbar.getVisibility() == View.VISIBLE);
         outState.putBoolean(FAVORITE_SHOWN, addedFragmentShown);
+
+        if(fragmentStack < 0)
+            fragmentStack = 0;
+        outState.putInt(FRAGMENT_STACK, fragmentStack);
     }
 
     @Override
     public void onBackPressed() {
-        String fragment = getSupportFragmentManager().findFragmentById(R.id.main_container).getClass().getName();
-        if (fragment.equals(ImageDetailsFragment.TAG)) {
+        Fragment fragment  = getSupportFragmentManager().findFragmentById(R.id.main_container);
+        String className = fragment.getClass().getName();
+
+        super.onBackPressed();
+        fragmentStack-=1;
+
+        if (className.equals(ImageDetailsFragment.TAG)) {
             showToolbar(true);
-        } else if (fragment.equals(FavoriteFragment.TAG) ||
-                        fragment.equals(PixabayViewPagerFragment.TAG) ||
-                        fragment.equals(UnsplashDefaultVPFragment.TAG) ) {
-            setUpToolbar(addedFragmentShown);
-            binding.content.toolbar.inflateMenu(R.menu.main_activity_menu);
+        } else if (className.equals(FavoriteFragment.TAG) ||
+                        className.equals(PixabayViewPagerFragment.TAG) ||
+                        className.equals(UnsplashDefaultVPFragment.TAG) ) {
+            if(fragmentStack == 0) {
+                setUpToolbar(addedFragmentShown);
+            }
         }
 
-        super.onBackPressed();
+
+        new Handler().postDelayed(new Runnable() {
+
+            @Override
+            public void run() {
+                Fragment frag = getSupportFragmentManager().findFragmentById(R.id.main_container);
+                setToolbarElevation(frag);
+                if(frag instanceof PixabayFragment || frag instanceof UnsplashFragment || frag instanceof PexelsFragment) {
+                    binding.content.toolbar.inflateMenu(R.menu.search_menu);
+                    setUpToolbar(true);
+                } else if(frag instanceof SearchFragment || frag instanceof ForYouFragment || frag instanceof AboutFragment){
+                    binding.content.toolbar.inflateMenu(R.menu.main_activity_menu);
+                    setUpToolbar(true);
+                }
+            }
+        }, 10);
     }
 
     private void findToolbarTitle() {
@@ -197,6 +225,14 @@ private String getToolbarTitle( String name) {
         return "";
     }
 
+    private void setToolbarElevation(Fragment fragment) {
+        if(fragment instanceof PixabayFragment || fragment instanceof UnsplashFragment || fragment instanceof PexelsFragment || fragment instanceof SearchFragment) {
+            ViewCompat.setElevation(binding.content.appBar, 0);
+        } else {
+            ViewCompat.setElevation(binding.content.appBar, 4 * getResources().getDisplayMetrics().density);
+        }
+    }
+
     private void showStartFragment() {
         getSupportFragmentManager().beginTransaction()
                 .replace(R.id.start_container, GetStartedFragment.newInstance())
@@ -215,6 +251,8 @@ private void replaceFragment(Fragment fragment, boolean replace) {
                     .commit();
 
         }
+
+        setToolbarElevation(fragment);
     }
 
     public void onNavItemClicked(View view) {
@@ -313,10 +351,13 @@ public void onAddFragment(Fragment fragment) {
                 .commit();
         addedFragmentShown = true;
         setUpToolbar(false);
+        fragmentStack+=1;
 
         if(fragment instanceof FavoriteFragment) {
             getSupportActionBar().setTitle(getString(R.string.favorite));
         }
+
+        setToolbarElevation(fragment);
     }
 
     @Override