diff --git a/README.md b/README.md
index 267945b..1b55d6f 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ You can customize something ...<br />
 * `showTitle(Boolean) (default: true)`
 * `setTitleBackgroundResId(R.color.xxx)`
 * `setImageProvider(ImageProvider)`
+* `setOnErrorListener(OnErrorListener onErrorListener)`
 : If you want load grid image yourself, you can use your ImageProvider
 
 #### Single Select
diff --git a/app/src/main/java/gun0912/tedbottompickerdemo/MainActivity.java b/app/src/main/java/gun0912/tedbottompickerdemo/MainActivity.java
index 5ebb9eb..52ce184 100644
--- a/app/src/main/java/gun0912/tedbottompickerdemo/MainActivity.java
+++ b/app/src/main/java/gun0912/tedbottompickerdemo/MainActivity.java
@@ -80,6 +80,13 @@ public void onImageSelected(final Uri uri) {
                                 .setSelectedUri(selectedUri)
                                 //.showVideoMedia()
                                 .setPeekHeight(1200)
+                                .setOnErrorListener(new TedBottomPicker.OnErrorListener() {
+                                    @Override
+                                    public void onError(Throwable throwable) {
+                                        throwable.printStackTrace();
+                                        Toast.makeText(getBaseContext(), "Error : " + throwable.getMessage(), Toast.LENGTH_SHORT).show();
+                                    }
+                                })
                                 .create();
 
                         bottomSheetDialogFragment.show(getSupportFragmentManager());
@@ -131,6 +138,13 @@ public void onImagesSelected(ArrayList<Uri> uriList) {
                                 .setCompleteButtonText("Done")
                                 .setEmptySelectionText("No Select")
                                 .setSelectedUriList(selectedUriList)
+                                .setOnErrorListener(new TedBottomPicker.OnErrorListener() {
+                                    @Override
+                                    public void onError(Throwable throwable) {
+                                        throwable.printStackTrace();
+                                        Toast.makeText(getBaseContext(), "Error : " + throwable.getMessage(), Toast.LENGTH_SHORT).show();
+                                    }
+                                })
                                 .create();
 
                         bottomSheetDialogFragment.show(getSupportFragmentManager());
diff --git a/tedbottompicker/src/main/java/gun0912/tedbottompicker/TedBottomPicker.java b/tedbottompicker/src/main/java/gun0912/tedbottompicker/TedBottomPicker.java
index 7399bc4..8d6c9cd 100644
--- a/tedbottompicker/src/main/java/gun0912/tedbottompicker/TedBottomPicker.java
+++ b/tedbottompicker/src/main/java/gun0912/tedbottompicker/TedBottomPicker.java
@@ -59,6 +59,7 @@
 import java.util.Locale;
 
 import gun0912.tedbottompicker.adapter.GalleryAdapter;
+import gun0912.tedbottompicker.exception.OnErrorNotImplementedException;
 import gun0912.tedbottompicker.util.RealPathUtil;
 
 public class TedBottomPicker extends BottomSheetDialogFragment {
@@ -282,7 +283,8 @@ public void onItemClick(View view, int position) {
 
                 GalleryAdapter.PickerTile pickerTile = imageGalleryAdapter.getItem(position);
 
-                switch (pickerTile.getTileType()) {
+                int tileType = pickerTile.getTileType();
+                switch (tileType) {
                     case GalleryAdapter.PickerTile.CAMERA:
                         startCameraIntent();
                         break;
@@ -295,7 +297,7 @@ public void onItemClick(View view, int position) {
                         break;
 
                     default:
-                        errorMessage();
+                        onError(new IllegalStateException("Unexpected type : " + tileType));
                 }
 
             }
@@ -428,7 +430,7 @@ private void startCameraIntent() {
         }
 
         if (cameraInent.resolveActivity(getActivity().getPackageManager()) == null) {
-            errorMessage("This Application do not have Camera Application");
+            onError("This Application do not have Camera Application");
             return;
         }
 
@@ -478,7 +480,7 @@ private File getImageFile() {
             cameraImageUri = Uri.fromFile(imageFile);
         } catch (IOException e) {
             e.printStackTrace();
-            errorMessage("Could not create imageFile for camera");
+            onError("Could not create imageFile for camera");
         }
 
 
@@ -507,21 +509,21 @@ private File getVideoFile() {
             cameraImageUri = Uri.fromFile(videoFile);
         } catch (IOException e) {
             e.printStackTrace();
-            errorMessage("Could not create imageFile for camera");
+            onError("Could not create imageFile for camera");
         }
 
 
         return videoFile;
     }
 
-    private void errorMessage(String message) {
+    private void onError(String message) {
         String errorMessage = message == null ? "Something wrong." : message;
 
-        if (builder.onErrorListener == null) {
-            Toast.makeText(getActivity(), errorMessage, Toast.LENGTH_SHORT).show();
-        } else {
-            builder.onErrorListener.onError(errorMessage);
-        }
+        onError(new RuntimeException(errorMessage));
+    }
+
+    private void onError(Throwable throwable) {
+        builder.onErrorListener.onError(throwable);
     }
 
     private void startGalleryIntent() {
@@ -537,7 +539,7 @@ private void startGalleryIntent() {
         }
 
         if (galleryIntent.resolveActivity(getActivity().getPackageManager()) == null) {
-            errorMessage("This Application do not have Gallery Application");
+            onError("This Application do not have Gallery Application");
             return;
         }
 
@@ -554,10 +556,6 @@ public void onActivityResult(int resultCode, Intent data) {
                 .startActivityForResult();
     }
 
-    private void errorMessage() {
-        errorMessage(null);
-    }
-
     private void setTitle() {
 
         if (!builder.showTitle) {
@@ -611,7 +609,8 @@ private void onActivityResultGallery(Intent data) {
         Uri temp = data.getData();
 
         if (temp == null) {
-            errorMessage();
+            onError(new NullPointerException("Intent data is null"));
+            return;
         }
 
         String realPath = RealPathUtil.getRealPath(getActivity(), temp);
@@ -637,7 +636,7 @@ public interface OnImageSelectedListener {
     }
 
     public interface OnErrorListener {
-        void onError(String message);
+        void onError(Throwable throwable);
     }
 
     public interface ImageProvider {
@@ -683,9 +682,17 @@ public static class Builder implements Serializable {
         ArrayList<Uri> selectedUriList;
         Uri selectedUri;
 
+        private OnErrorListener defaultErrorListener = new OnErrorListener() {
+            @Override
+            public void onError(Throwable throwable) {
+                throw new OnErrorNotImplementedException("Error listener is not implemented", throwable);
+            }
+        };
+
         public Builder(@NonNull Context context) {
 
             this.context = context;
+            this.onErrorListener = defaultErrorListener;
 
             setCameraTile(R.drawable.ic_camera);
             setGalleryTile(R.drawable.ic_gallery);
diff --git a/tedbottompicker/src/main/java/gun0912/tedbottompicker/adapter/GalleryAdapter.java b/tedbottompicker/src/main/java/gun0912/tedbottompicker/adapter/GalleryAdapter.java
index f13bfb2..382f3ff 100644
--- a/tedbottompicker/src/main/java/gun0912/tedbottompicker/adapter/GalleryAdapter.java
+++ b/tedbottompicker/src/main/java/gun0912/tedbottompicker/adapter/GalleryAdapter.java
@@ -100,6 +100,7 @@ public GalleryAdapter(Context context, TedBottomPicker.Builder builder) {
 
         } catch (Exception e) {
             e.printStackTrace();
+            onError(e);
         } finally {
             if (cursor != null && !cursor.isClosed()) {
                 cursor.close();
@@ -220,6 +221,9 @@ public interface OnItemClickListener {
         public void onItemClick(View view, int position);
     }
 
+    private void onError(Throwable throwable){
+        builder.onErrorListener.onError(throwable);
+    }
 
     public static class PickerTile {
 
@@ -263,7 +267,7 @@ public String toString() {
             } else if (isGalleryTile()) {
                 return "PickerTile";
             } else {
-                return "Invalid item";
+                throw new IllegalStateException("Invalid item");
             }
         }
 
diff --git a/tedbottompicker/src/main/java/gun0912/tedbottompicker/exception/OnErrorNotImplementedException.java b/tedbottompicker/src/main/java/gun0912/tedbottompicker/exception/OnErrorNotImplementedException.java
new file mode 100644
index 0000000..4df80f3
--- /dev/null
+++ b/tedbottompicker/src/main/java/gun0912/tedbottompicker/exception/OnErrorNotImplementedException.java
@@ -0,0 +1,20 @@
+package gun0912.tedbottompicker.exception;
+
+public class OnErrorNotImplementedException extends RuntimeException {
+
+    public OnErrorNotImplementedException() {
+        super();
+    }
+
+    public OnErrorNotImplementedException(String message) {
+        super(message);
+    }
+
+    public OnErrorNotImplementedException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public OnErrorNotImplementedException(Throwable cause) {
+        super(cause);
+    }
+}