switch to recyclerview

app/src/main/java/gr/thmmy/mthmmy/utils/EmojiKeyboard.java

@@ -3,13 +3,14 @@ package gr.thmmy.mthmmy.utils;
 import android.content.Context;
 import android.os.Handler;
 import android.support.v7.widget.AppCompatImageButton;
+import android.support.v7.widget.GridLayoutManager;
+import android.support.v7.widget.RecyclerView;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.SparseArray;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.inputmethod.InputConnection;
-import android.widget.GridView;
 import android.widget.LinearLayout;
 
 import gr.thmmy.mthmmy.R;
@@ -151,13 +152,10 @@ public class EmojiKeyboard extends LinearLayout {
         emojis.append(R.drawable.emoji_extremely_shocked, "^ex_shocked^");
         emojis.append(R.drawable.emoji_smurf, "^smurf^");
 
-        GridView emojiGridView = findViewById(R.id.emoji_gridview);
-        emojiGridView.setAdapter(new ImageKeyboardAdapter(context, getEmojiArray()));
-        emojiGridView.setOnItemClickListener((parent, view, position, id) -> {
-            if (inputConnection == null) return;
-            String value = emojis.valueAt(position);
-            inputConnection.commitText(value, 1);
-        });
+        RecyclerView emojiRecyclerview = findViewById(R.id.emoji_recyclerview);
+        emojiRecyclerview.setHasFixedSize(true);
+        emojiRecyclerview.setLayoutManager(new GridLayoutManager(context, 6));
+        emojiRecyclerview.setAdapter(new EmojiKeyboardAdapter(getEmojiArray()));
         AppCompatImageButton backspaceButton = findViewById(R.id.backspace_button);
         // backspace behavior
         final Handler handler = new Handler();
@@ -190,8 +188,8 @@ public class EmojiKeyboard extends LinearLayout {
         this.inputConnection = inputConnection;
     }
 
-    public Integer[] getEmojiArray() {
-        Integer[] emojiArray = new Integer[emojis.size()];
+    public int[] getEmojiArray() {
+        int[] emojiArray = new int[emojis.size()];
         for (int i = 0; i < emojiArray.length; i++) {
             emojiArray[i] = emojis.keyAt(i);
         }

app/src/main/java/gr/thmmy/mthmmy/utils/EmojiKeyboardAdapter.java

@@ -0,0 +1,51 @@
+package gr.thmmy.mthmmy.utils;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.support.annotation.NonNull;
+import android.support.v7.widget.AppCompatImageView;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.GridView;
+import android.widget.ImageView;
+
+import java.util.Arrays;
+
+import gr.thmmy.mthmmy.R;
+
+public class EmojiKeyboardAdapter extends RecyclerView.Adapter<EmojiKeyboardAdapter.EmojiViewHolder> {
+    private int[] emojiIds;
+
+    public EmojiKeyboardAdapter(int[] emojiIds) {
+        this.emojiIds = emojiIds;
+    }
+
+    @NonNull
+    @Override
+    public EmojiViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        AppCompatImageView imageView = (AppCompatImageView) LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.emoji_keyboard_grid_cell, parent, false);
+        return new EmojiViewHolder(imageView);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull EmojiViewHolder holder, int position) {
+        holder.imageView.setImageResource(emojiIds[position]);
+    }
+
+    @Override
+    public int getItemCount() {
+        return emojiIds.length;
+    }
+
+    public static class EmojiViewHolder extends RecyclerView.ViewHolder {
+        AppCompatImageView imageView;
+        public EmojiViewHolder(AppCompatImageView imageView) {
+            super(imageView);
+            this.imageView = imageView;
+        }
+    }
+}

app/src/main/java/gr/thmmy/mthmmy/utils/ImageKeyboardAdapter.java

@@ -1,53 +0,0 @@
-package gr.thmmy.mthmmy.utils;
-
-import android.content.Context;
-import android.graphics.drawable.Drawable;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.BaseAdapter;
-import android.widget.GridView;
-import android.widget.ImageView;
-
-import java.util.Arrays;
-
-public class ImageKeyboardAdapter extends BaseAdapter {
-
-    private Context context;
-    private Integer[] emojiIds;
-
-    public ImageKeyboardAdapter(Context context, Integer[] emojiIds) {
-        this.context = context;
-        this.emojiIds = emojiIds;
-    }
-
-    @Override
-    public int getCount() {
-        return emojiIds.length;
-    }
-
-    @Override
-    public Object getItem(int position) {
-        return null;
-    }
-
-    @Override
-    public long getItemId(int position) {
-        return 0;
-    }
-
-    @Override
-    public View getView(int position, View convertView, ViewGroup parent) {
-        ImageView emoji;
-        if (convertView == null) {
-            emoji = new ImageView(context);
-            emoji.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
-            emoji.setScaleType(ImageView.ScaleType.CENTER_CROP);
-
-            emoji.setPadding(8, 8, 8, 8);
-        } else {
-            emoji = (ImageView) convertView;
-        }
-        emoji.setImageResource(emojiIds[position]);
-        return emoji;
-    }
-}

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

@@ -19,13 +19,9 @@
         android:padding="2dp"
         app:srcCompat="@drawable/ic_backspace_black_24dp" />
 
-    <GridView
-        android:id="@+id/emoji_gridview"
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/emoji_recyclerview"
+        android:scrollbars="vertical"
         android:layout_width="match_parent"
-        android:layout_height="200dp"
-        android:gravity="center"
-        android:horizontalSpacing="0dp"
-        android:numColumns="auto_fit"
-        android:stretchMode="columnWidth"
-        android:verticalSpacing="0dp" />
+        android:layout_height="200dp"/>
 </merge>

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.v7.widget.AppCompatImageView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content"
+    android:padding="8dp"/>