menuitem

问题 In my action bar, I have defined a menu item that can show text "DONE" by the code below: Menu.xml: <menu xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@+id/action_register_text" android:actionLayout="@layout/action_done_text" android:title="@string/action_done" android:showAsAction="always"/> </menu> action_done_text.xml: <?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/expand

问题 It is easy to set a default color of the items background in action bar by setting: <item name="android:actionBarItemBackground">@drawable/action_bar_item_background</item> in application theme. I would like to change this color only for one of my fragments. How to do it programmatically? 回答1: Have you tried the solution from user3225831 mentioned here: https://stackoverflow.com/a/21297231/1738838 ActionBar bar = getActionBar(); bar.setBackgroundDrawable(new ColorDrawable("COLOR")); 回答2: Use

问题 I have a menu in wpf that has an input box and a button on it. Once the user clicks the button I need to close the menu. Is there a way to do this? <Menu x:Name="MainMenu"> <MenuItem Header="Main"> <MenuItem Header="SubMenu" x:Name="SubMenu"> <StackPanel Orientation="Horizontal"> <TextBox Width="50" x:Name="TextBox" /> <Button Content="Click Me and Close" x:Name="Button" IsDefault="True"/> </StackPanel> </MenuItem> </MenuItem> Thanks, Jon 回答1: Get hold of the MenuItem and do: _menuItem

问题 I'm trying to build an app with a split actionbar/toolbar like in the Gmail app. Is there any view element for this behaviour or do I have to write such a toolbar myself? The search icon is moving with the master fragment when opening the slidingDrawer . 回答1: To accomplish this you can add one of the new Toolbar widgets to each of your fragments layouts. The new Toolbar class was designed to be much more flexible than a traditional Actionbar and will work well in this split design. This post

问题 This is My Code home.xml <item android:id="@+id/action_shopping_cart" android:actionLayout="@layout/action_bar_cart_button" android:showAsAction="ifRoom" android:title="Shopping Cart" /> <item android:id="@+id/action_notifications" android:actionLayout="@layout/action_bar_notifications_button" android:showAsAction="ifRoom" android:title="Notifications" /> <item android:id="@+id/menu_overflow" android:orderInCategory="100" android:icon="@drawable/ic_action_overflow" android:showAsAction=

问题 By default menu items become disabled when its command cannot be executed (CanExecute = false). What is the easiest way to make the menu item visible/collapsed based on the CanExecute method? 回答1: You can simply bind Visibility to IsEnabled (set to false on CanExecute == false). You still would need an IValueConverter to convert the bool to visible/collapsed. public class BooleanToCollapsedVisibilityConverter : IValueConverter { #region IValueConverter Members public object Convert(object

问题 I'm trying to change the background color to the menu item when it is pressed. Change the background color but not the color when pressed. WHISED: Background: dark gray Background pressed: orange OBTAINED: Background: dark gray Background pressed: blue (default Android) What I can do? Thanks Styles.xml <style name="AppTheme2" parent="android:Theme.Holo"> <item name="android:popupMenuStyle">@style/MyApp.PopupMenu</item> </style> <style name="MyApp.PopupMenu" parent="android:Widget.Holo

问题 I'm trying to change the background color to the menu item when it is pressed. Change the background color but not the color when pressed. WHISED: Background: dark gray Background pressed: orange OBTAINED: Background: dark gray Background pressed: blue (default Android) What I can do? Thanks Styles.xml <style name="AppTheme2" parent="android:Theme.Holo"> <item name="android:popupMenuStyle">@style/MyApp.PopupMenu</item> </style> <style name="MyApp.PopupMenu" parent="android:Widget.Holo

问题 Do you know how to have a two lines menu item title? I've tried using \n in the string or Html.fromHtml with tag but it doesn't work. Thanks 回答1: This is the recommended answer from Google: "If text in a simple menu wraps to a second line, use a simple dialog instead. Simple dialogs can have rows with varying heights." https://material.io/guidelines/components/menus.html#menus-simple-menus 回答2: You can use String line=System.getProperty("line.separator") this will give you newline effect in

问题 Does anyone know how to change the brush for a menu's background? This sounds simple, but I don't see any obvious way to do this. You'd think that the Background property would change it, but it doesn't. Here's what my menu looks like (notice the default white background): Example Code: <Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300">