Move isImage method to BitmapUtils class

src/com/owncloud/android/ui/adapter/LocalFileListAdapter.java

@@ -37,6 +37,7 @@ import android.widget.TextView;
 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.ThumbnailsCacheManager;
 import com.owncloud.android.datamodel.ThumbnailsCacheManager.AsyncLocalDrawable;
+import com.owncloud.android.utils.BitmapUtils;
 import com.owncloud.android.utils.DisplayUtils;
 
 /**
@@ -133,7 +134,7 @@ public class LocalFileListAdapter extends BaseAdapter implements ListAdapter {
                 }
                 
              // get Thumbnail if file is image
-                if (isImage(file)){
+                if (BitmapUtils.isImage(file)){
                 // Thumbnail in Cache?
                     Bitmap thumbnail = ThumbnailsCacheManager.getBitmapFromDiskCache(
                             String.valueOf(file.hashCode())
@@ -222,12 +223,4 @@ public class LocalFileListAdapter extends BaseAdapter implements ListAdapter {
         }
         notifyDataSetChanged();
     }
-    
-    private boolean isImage(File file) {
-        Uri selectedUri = Uri.fromFile(file);
-        String fileExtension = MimeTypeMap.getFileExtensionFromUrl(selectedUri.toString());
-        String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension);
-        
-        return (mimeType != null && mimeType.startsWith("image/"));
-   }
 }

src/com/owncloud/android/utils/BitmapUtils.java

@@ -23,6 +23,10 @@ import android.graphics.BitmapFactory;
 import android.graphics.Matrix;
 import android.graphics.BitmapFactory.Options;
 import android.media.ExifInterface;
+import android.net.Uri;
+import android.webkit.MimeTypeMap;
+
+import java.io.File;
 
 /**
  * Utility class with methods for decoding Bitmaps.
@@ -169,6 +173,18 @@ public class BitmapUtils {
         }
         return resultBitmap;
     }
-    
+
+    /**
+     * Checks if file passed is an image
+     * @param file
+     * @return true/false
+     */
+    public static boolean isImage(File file) {
+        Uri selectedUri = Uri.fromFile(file);
+        String fileExtension = MimeTypeMap.getFileExtensionFromUrl(selectedUri.toString());
+        String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension);
+
+        return (mimeType != null && mimeType.startsWith("image/"));
+    }
     
 }