如何在tableview单元格中隐藏和取消隐藏图像视图？

I am using a tableview with two rows. Each row having a Label, Button and Image View .Initially the the row height is 50 with no image. When I click the Button in the cell the Image Picker will open and select a image from camera roll. So how can I update the tableview height to 100 with a Image View in cell?I am using a tableview with two rows. Each row