Change ios icons

Author: farzadi

ios/Runner/Assets.xcassets/AppIcon.appiconset/196.png

@@ -232,24 +232,24 @@ class LinkPreviewWidget extends StatelessWidget {
               ],
             ),
             Positioned(
-              child:  ClipOval(
-                child: Material(
-                  color: primaryLightColor, // button color
-                  child: InkWell(
-                    splashColor: secondaryTextColor, // inkwell color
-                    child: SizedBox(width: 25, height: 25, child:Icon(
-                      MdiIcons.plus,
-                      color: Colors.white,
-                    )),
-                    onTap: () {
+              child: ButtonTheme(
+                minWidth: 0.5,
+                height: 0.5,
+                child: MaterialButton(
+                    onPressed: () {
                       UpdateCategoryWidget update = new UpdateCategoryWidget();
                       update.updateCategory(context, id, category);
                     },
-                  ),
-                ),
+                    elevation: 1,
+                    color: primaryLightColor,
+                    child: Icon(
+                      MdiIcons.plus,
+                      color: Colors.white,
+                    ),
+                    shape: CircleBorder()),
               ),
-              bottom: 5,
-              right: 8,
+              bottom: -4,
+              right: -8,
             )
           ],
         ),