Programming Tutorials

Flutter - PopupMenuButton Change Icon The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to set or change the PopupMenuButton widget’s icon. Here we used the PopupMenuButton class’s icon property to change the default icon of the PupupMenuButton widget. Here we also change the default color of the PopupMenuButton widget’s replaced icon. The PopupMenuButton class’s icon property value is a widget that is the icon used for this button and the button will behave like an Ic...

Flutter - PopupMenuItem onTap The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to use the PopupMenuItem widget’s tap callback. Here we used the PopupMenuItem class’s onTap property to set the PupupMenuButton widget’s item tap callback. The flutter PopupMenuItem class represents an item in a material design popup menu. Normally the child of a PopupMenuItem is a Text widget. But the flutter developers can build more complex items such as they can show both an icon and ...

Flutter - PopupMenuButton onSelected The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to use the PopupMenuButton widget’s onSelected callback. Here we used the PopupMenuButton class’s onSelected property to set the PupupMenuButton widget’s item selection callback. The PopupMenuButton class’s onSelected property value is a PopupMenuItemSelected instance that is called when the user selects a value from the popup menu created by this button. But if the popup menu is dis...

Flutter - PopupMenuButton Icon & Text The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to display both a text and an icon on each item in a PopupMenuButton widget. Here we used the PopupMenuButton class’s itemBuilder property to add items to the PupupMenuButton widgets. And also configure the menu items to show text and an icon inside each item of the PopupMenuButton widget. The PopupMenuButton class’s itemBuilder property value is a PopupMenuItemBuilder instanc...

Flutter - PopupMenuButton Items Icon Color The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to display both a text and an icon on each item in a PopupMenuButton widget. And how to change the icon color of menu items in a PopupMenuButton widget by a single setting. Here we used the PopupMenuButton class’s itemBuilder property to add items to the PupupMenuButton widgets. And we wrapped the PopupMenuButton widget with a Theme widget to set or change a common color for the menu...

Flutter - PopupMenuButton Divider The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to add a divider between PopupMenuButton items. Here we used the PopupMenuButton class’s itemBuilder property to add items to the PupupMenuButton widgets. And also add a divider line between each item by placing the PopupMenuDivider instance between items. The PopupMenuButton class’s itemBuilder property value is a PopupMenuItemBuilder instance. The PopupMenuItemBuilder is called when...

Flutter - PopupMenuButton Offset The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to set or change the offset value of a PopupMenuButton widget. Here we used the PopupMenuButton class’s offset property to set or change the PupupMenuButton widget’s default offset value. The PopupMenuButton class’s offset property value is an Offset instance that is the offset is applied relative to the initial position set by the position. If the flutter developers do not set the Popup...

Flutter - PopupMenuButton Width The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to set or change the PopupMenuButton widget width. But there is no direct property or method to set or change the width of a PopupMenuButton widget. So we have to take help from another property of PopupMenuButton class. Here we used the PopupMenuButton class’s itemBuilder property to specify the width of PopupMenuButton items, this will finally change the width of the PopupMenuButton widge...

Flutter - PopupMenuButton Shape The PopupMenuButton class allows us to display a menu when pressed and calls onSelected when the menu is dismissed because an item was selected. The value passed to onSelected is the value of the selected menu item. The flutter developers can provide one of a child or an icon but not both. If developers provide an icon then PopupMenuButton behaves like an IconButton. If both child and icon are null, then a standard overflow icon is created depending on the platform. The following flutter app development tutorial will demonstrate how to set or change the PopupMenuButton widget shape. Here we used the PopupMenuButton class’s shape property to specify the shape of a PopupMenuButton widget. We rendered a rounded corners PopupMenuButton in this flutter example. The PopupMenuButton class’s shape property value is a ShapeBorder instance that defines the shape of the menu. When flutter developers leave the shape property...