protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    gridView = (GridView) findViewById(R.id.gridView);
    gridAdapter = new GridViewAdapter(this, R.layout.grid_item_layout, getData());
    gridView.setAdapter(gridAdapter);

    gridView.setOnItemClickListener(new OnItemClickListener() {

ImageItem item = (ImageItem) parent.getItemAtPosition(position);

            //Create intent
            Intent intent = new Intent(MainActivity.this, DetailsActivity.class);
            intent.putExtra("title", item.getTitle());
            intent.putExtra("image", item.getImage());

            //Start details activity
            startActivity(intent);
        }
    });
}

final ArrayList<ImageItem> imageItems = new ArrayList<>();
    TypedArray imgs = getResources().obtainTypedArray(R.array.image_ids);
    for (int i = 0; i < imgs.length(); i++) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), imgs.getResourceId(i, -1));
        imageItems.add(new ImageItem(bitmap, "Image#" + i));
    }
    return imageItems;
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && data != null){
        Uri selectedImage = data.getData();
        ImageItem.setImageURI(selectedImage);

    }
    super.onActivityResult(requestCode, resultCode, data);
}