add file and directory icons

app/src/main/java/com/simplemobiletools/filemanager/Utils.java

@@ -3,6 +3,14 @@ package com.simplemobiletools.filemanager;
 import android.Manifest;
 import android.content.Context;
 import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
 import android.support.v4.content.ContextCompat;
 import android.widget.Toast;
 
@@ -22,4 +30,16 @@ public class Utils {
     public static boolean hasStoragePermission(Context cxt) {
         return ContextCompat.checkSelfPermission(cxt, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
     }
+
+    public static Bitmap getColoredIcon(Resources res, int newColor, int id) {
+        final BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inMutable = true;
+        final Bitmap bmp = BitmapFactory.decodeResource(res, id, options);
+        final Paint paint = new Paint();
+        final ColorFilter filter = new PorterDuffColorFilter(newColor, PorterDuff.Mode.SRC_IN);
+        paint.setColorFilter(filter);
+        final Canvas canvas = new Canvas(bmp);
+        canvas.drawBitmap(bmp, 0, 0, paint);
+        return bmp;
+    }
 }

app/src/main/java/com/simplemobiletools/filemanager/adapters/ItemsAdapter.java

@@ -1,13 +1,17 @@
 package com.simplemobiletools.filemanager.adapters;
 
 import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.BaseAdapter;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import com.simplemobiletools.filemanager.R;
+import com.simplemobiletools.filemanager.Utils;
 import com.simplemobiletools.filemanager.models.FileDirItem;
 
 import java.util.List;
@@ -18,10 +22,16 @@ import butterknife.ButterKnife;
 public class ItemsAdapter extends BaseAdapter {
     private final List<FileDirItem> mItems;
     private final LayoutInflater mInflater;
+    private final Bitmap mFileBmp;
+    private final Bitmap mDirectoryBmp;
 
     public ItemsAdapter(Context context, List<FileDirItem> items) {
         mItems = items;
         mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+
+        final Resources res = context.getResources();
+        mDirectoryBmp = Utils.getColoredIcon(res, res.getColor(R.color.lightGrey), R.mipmap.directory);
+        mFileBmp = Utils.getColoredIcon(res, res.getColor(R.color.lightGrey), R.mipmap.file);
     }
 
     @Override
@@ -38,6 +48,12 @@ public class ItemsAdapter extends BaseAdapter {
         final FileDirItem item = mItems.get(position);
         viewHolder.name.setText(item.getName());
 
+        if (item.getIsDirectory()) {
+            viewHolder.icon.setImageBitmap(mDirectoryBmp);
+        } else {
+            viewHolder.icon.setImageBitmap(mFileBmp);
+        }
+
         return convertView;
     }
 
@@ -56,14 +72,9 @@ public class ItemsAdapter extends BaseAdapter {
         return 0;
     }
 
-    public void updateItems(List<FileDirItem> newItems) {
-        mItems.clear();
-        mItems.addAll(newItems);
-        notifyDataSetChanged();
-    }
-
     static class ViewHolder {
         @BindView(R.id.item_name) TextView name;
+        @BindView(R.id.item_icon) ImageView icon;
 
         public ViewHolder(View view) {
             ButterKnife.bind(this, view);

app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java

@@ -73,7 +73,8 @@ public class ItemsFragment extends android.support.v4.app.Fragment implements Ad
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
         final FileDirItem item = mItems.get(position);
         if (item.getIsDirectory()) {
-            mListener.itemClicked(item.getPath());
+            if (mListener != null)
+                mListener.itemClicked(item.getPath());
         } else {
             final String path = item.getPath();
             final File file = new File(path);