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https://github.com/xabre/xamarin-forms-tab-badge
Xamarin Forms bindable Tab badges for iOS, Android, UWP, MacOS and WPF
https://github.com/xabre/xamarin-forms-tab-badge
badge tab tablayout uwp wpf xamarin-android xamarin-forms xamarin-ios xamarin-mac xamarin-plugin
Last synced: about 1 month ago
JSON representation
Xamarin Forms bindable Tab badges for iOS, Android, UWP, MacOS and WPF
- Host: GitHub
- URL: https://github.com/xabre/xamarin-forms-tab-badge
- Owner: xabre
- License: mit
- Created: 2016-10-08T09:21:45.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2022-01-20T11:09:41.000Z (over 2 years ago)
- Last Synced: 2024-05-02T10:44:27.504Z (about 2 months ago)
- Topics: badge, tab, tablayout, uwp, wpf, xamarin-android, xamarin-forms, xamarin-ios, xamarin-mac, xamarin-plugin
- Language: C#
- Homepage:
- Size: 6.44 MB
- Stars: 307
- Watchers: 24
- Forks: 75
- Open Issues: 26
-
Metadata Files:
- Readme: README.md
- Changelog: changelog.md
- License: LICENSE
Lists
- awesome-xamarin-forms - Tab Badge ★313
README
# 
xamarin-forms-tab-badge [](https://www.bitrise.io/app/6fbb08a710d8f2aa)
**Xamarin Forms** bindable tab badges for iOS, Android, UWP, MacOS and WPF. The plugin creates a custom renderer (for each platform) and a custom attached property for adding tab bar badges which can be bound in XF shared code.
## Sample
## Support & Limitations
| Feature / Availability | Xamarin.Android (1) | Xamarin.iOS | UWP (2) | MacOS (3) | WPF (4) |
| ------------- | ----------- | ----------- | ----------- | ----------- | ----------- |
| Bindable Badge Text | ✓ | ✓ (>=8.0) | ✓ | ✓ | ✓ |
| Bindable Badge Color | ✓ | ✓ (>= 10.0) | ✓ | ✓ | ✓ |
| Bindable Badge Text Color | ✓ | ✓ (>= 10.0) | ✓ | ✓ | ✓ |
| Bindable Badge Font | ✓\* | ✓ \*(>= 10.0) | ✓ | ✓ | ✓ |
| Bindable Badge Postion | ✓ | ✕ | ✓ | ✓ | ✓ |
| Bindable Badge Margin | ✓ | ✕ | ✓ | ✓ | ✓ |
| Dynamic tab add/removal | ✓ | No overflow | ✓ | ✓ | ✓ |
\*(1) Min Android **API level 15**, bottom placement also supported starting with v2.1.0
\*(2) **Min UWP version**: Win 10 Fall Creators Update (XF.3 has a .netstandard 2 requirement).
\*(3) **MacOS version**: -
\*(4) **WPF version**: -
\*\***Font restrictions**: able to bind font attributes and family but not size
## Installation
- Make sure to install the package in your Xamarin.Forms shared/core project as well as a platform specifc projects.
```
// stable
Install-Package Plugin.Badge
// or pre-release
Install-Package Plugin.Badge -Pre
```
[](https://www.nuget.org/packages/Plugin.Badge) [](https://www.nuget.org/packages/Plugin.Badge)
### iOS, Android, UWP, MacOS, WPF
You have to register the custom renderer. I usually put this in the AssemblyInfo.cs file of my Platform specific project (iOS, Android, UWP, MacOS, WPF) csproj.
```
[assembly: ExportRenderer(typeof(TabbedPage), typeof(BadgedTabbedPageRenderer))]
```
**Caution**: *If you are using the **NON AppCompat** MainActivity (i.e. you Main activity inherits from FormsApplicationActivity) please register the 'Legacy' renderer*
```
[assembly: ExportRenderer(typeof(TabbedPage), typeof(LegacyBadgedTabbedRenderer))]
```
### Caution - Custom TabbedPage / Custom Renderers
If you are using a custom renderer for TabbedPage please change it to inherit from `BadgedTabbedPageRenderer` and you are all set. Of course dont forget to register your own renderer.
### Linker
As you already know when you enable linkling for your application the linker might remove some of the methods/types/properties/events used by third party libraries. This is why it's necessary to update your `LinkerPleaseInclude.cs`. Check this [blogpost](https://lostechies.com/jimmybogard/2014/11/11/dealing-with-the-linker-in-xamarin-apps/) for more linker info.
- For iOS add the following lines:
```
public void Include(UITabBarItem item)
{
item.BadgeColor = UIColor.Red;
item.BadgeValue = "badge";
}
```
- For Android no issues detected yet :). Feel free to report any issues here.
## Usage
### Badge Text
For each **child page** of the TabbedPage just bind the custom attached property
[`TabBadge.BadgeText` (XAML) or `TabBadge.BadgeTextPropery` (CSharp)]
#### XAML
The important line here is binding the attached property:
```
plugin:TabBadge.BadgeText="{Binding Count}"
```
Example tabbed page with badged children:
```
...
...
```
#### CSharp codebehind
```
var tab1 = new ContentPage //assume this is a child page of your Tab
{
Title = "Tab1",
Content = tab1Layout
};
tab1.SetBinding(TabBadge.BadgeTextProperty, new Binding("Count"));
```
### Badge Color
Very similar to `BadgeText` just use [`TabBadge.BadgeColor` (XAML) or `TabBadge.BadgeColorPropery` (CSharp)].
### Badge Text Color
Very similar to `BadgeColor` just use [`TabBadge.BadgeTextColor` (XAML) or `TabBadge.BadgeTextColorPropery` (CSharp)].
### Badge Font Attributes
Very similar to `BadgeColor` just use [`TabBadge.BadgeFont` (XAML) or `TabBadge.BadgeFontPropery` (CSharp)].
ToDo:
- you can alo try to set font family, should work in theory
- font size is not supported yet on android ......
### Badge Position
Very similar to `BadgeColor` just use [`TabBadge.BadgePosition` (XAML) or `TabBadge.BadgePositionPropery` (CSharp)].
| TopLeft | BottomLeft | BottomRight | Center | TopCenter | BottomCenter | LeftCenter | RightCenter |
| ------------- | ----------- | ----------- | ----------- | ----------- | ----------- | ----------- | ----------- |
| 
| 
| 
| 
| | | | |
## Showning / Hiding the badge
If the value of the `BadgeText` is set to null or empty string the badge is hidden. To show it again set a non null or empty value
# Generic Badge View
As of v2.2.0 the package also contains a XF Badge view that is based on a XF Frame View and can be added to any layout and bound using the usual approach. The generic badge view can also be added to custom *NavigationPage.TitleView* layouts.
Checkout the Sample-App for more.
# Licence
[MIT](https://github.com/xabre/xamarin-forms-tab-badge/blob/master/LICENSE)