Xamarin.Forms 1.3.0.6280-pre2

Build native UIs for iOS, Android, and Windows Phone from a single, shared C# codebase

This is a prerelease version of Xamarin.Forms.
There is a newer version of this package available.
See the version list below for details.
Install-Package Xamarin.Forms -Version 1.3.0.6280-pre2
dotnet add package Xamarin.Forms --version 1.3.0.6280-pre2
paket add Xamarin.Forms --version 1.3.0.6280-pre2
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

## Important Notes
This release (1.3.0 final) will be the last release to support the current *Preview* Unified iOS API. The next release will support the *Stable* iOS Unified API, which is not ABI/API compatible. This package is not compatible with the new Stable iOS Unified API. Xamarin.Forms 1.3.1 will be simultaneously released when the Stable Unified API releases to the stable channel.

If you are using the Classic iOS API this change does not affect you.

## New API
- MasterDetailPage.MasterBehavior : Used to control how the MasterDetailPage renderers the split view between the Master and Detail. Allowed values are:

```csharp
public enum MasterBehavior
{
SplitOnLandscape,
Split,
Popover,
SplitOnPortrait
}
```

- VisualElement.Navigation now contains overloads for all Pushing and Popping methods that accept a boolean parameter to enable/disable animations.
- INavigation contains methods needed for more complex navigation scenarios:

```csharp
public interface INavigation
{
IReadOnlyList<Page> NavigationStack { get; }
IReadOnlyList<Page> ModalStack { get; }

void RemovePage (Page page);
void InsertPageBefore (Page page, Page before);

Task PushAsync (Page page);
Task<Page> PopAsync ();
Task PopToRootAsync ();
Task PushModalAsync (Page page);
Task<Page> PopModalAsync ();

Task PushAsync (Page page, bool animated);
Task<Page> PopAsync (bool animated);
Task PopToRootAsync (bool animated);
Task PushModalAsync (Page page, bool animated);
Task<Page> PopModalAsync (bool animated);
}
```
- New member on Page: `protected virtual bool OnBackButtonPressed ()`: Override in order to handle *physical* back button press events. Events bubble down from root page and back up. Unhandled back button events will cause the app to exit. NavigationPage and the Platform still handle the back button as expected, however it is now possible to intercept and modify these behaviors. Not overriding this method retains the existing back button behavior.
- DependencyService now has Register methods for users needing more advanced ways to register dependencies.
- WidthRequest, HeightRequest, MinimumWidthRequest, and MinimumHeightRequest are now BindableProperties
- IViewController, IVisualElementController, and IElementController now available and explicitly implemented on VisualElement. These interfaces will eventually replace all internal API's currently used to communicate between platform renderers and the frontend API.
- IElementController.SetValueFromRenderer allows for updating of BindableProperties from renderers without accidentally clearing bindings.
- XAML now supports text as the content node in Label: `<Label>Hello World</Label>`
- Pin now has a Clicked property for detecting when the user taps or clicks on a Map pin after the information window is visible.
- Layout constructor is now marked protected and not internal

## Bug Fixes

### Core
- Adding a bad Path to a UriImageSource no longer crashes
- Improved XAML error reporting
- Fix crash where calling Navigation.PushAsync from re-initialized View sometimes crashed
- Fix error where cloning a Binding did not clone the Source parameter
- IsPresented is now respected correctly when using MasterDetailPage. May throw exception now if IsPresented is set to a disallowed value with MasterBehavior.
- Several bugs relating to culture invariance in XAML parsing.
- ThicknessConverter no longer depends on device culture
- Label properly resizes after setting Label.FontSize/Font/FontAttributes [Bug](https://bugzilla.xamarin.com/show_bug.cgi?id=24722)
- XAML InitializeComponent calls in some apps this will result in a massive performance improvement when loading pages.
- Serialization now property supports DataMemberAttributes
- ListView and TableView now return consistent sizing across all platforms. This change should not affect most apps, however some apps suffering from inconsistent sizing with ListViews/TableViews should find the situation better.
- Small set of changes to Layout to enable performance optimization with unneeded measure invalidation.

### iOS
- Button.Image is now rendered with original image to match other platforms
- Editor now scrolls to the correct location when a keyboard is shown
- Fix NullReferenceException when assigning to SearchBar.BackgroundColor
- Fix issue where PushModalAsync could sometimes result in a unhandled exception from UIKit.
- MasterDetailPage now disposes of child renderers correctly, resolves a memory leak.
- Fix issue where cells could not be unselected using blank rows.
- WebViewRenderer now uses correct path for finding resources
- Resolve issue where calling CreateViewController multiple times would cause an exception
- Use proxy when downloading images if configured on device.
- Partial swipes on a NavigationPage no longer cause the NavigationPage to get out of sync with the UINavigationController
- ActionSheet now correctly shows on iOS 8
- ActionSheet no longer gets incorrectly positions when rotating while visible.
- Assigning to Application.MainPage now works reliably

### Android
- MasterDetailPage container width now matches android design guidelines on tablets. (No longer insanely wide).
- SwitchCell height is no longer squished
- No longer crashes on Android 5.0
- No longer renders with a black bar at the bottom of Android 5.0 devices
- Other compatibility fixes with Android 5.0
- WebViewRenderer now uses correct path for finding resources
- Fix issue where calling SetPage multiple times would throw an exception
- Fix crash when restarting the Activity introduced in last pre-release
- Assigning to Application.MainPage now works reliably

### WinPhone
- Assigning to Application.MainPage now works reliably
- Application.OnStart now is called correctly

## Still to come
Some things coming post-1.3:

- Android bitmap optimization (automatic downsampling to prevent OOM exceptions with large images)
- WinRT support (Windows & Windows Phone 8.1)
- Bug fixes as always
- CarouselView
- Much much more

Version History

Version Downloads Last updated
4.0.0.62955-pre2 1,270 1/10/2019
4.0.0.8055-pre1 7,941 12/4/2018
3.5.0.62956-pre2 120 1/10/2019
3.4.0.1009999 27,131 1/4/2019
3.4.0.1008975 142,217 11/15/2018
3.4.0.987044-pre2 1,918 11/8/2018
3.4.0.925479-pre1 6,327 10/18/2018
3.3.0.967583 94,576 11/1/2018
3.3.0.912540 73,559 10/18/2018
3.3.0.893527-pre3 3,874 10/11/2018
3.3.0.871608-pre2 6,524 10/1/2018
3.3.0.840541-pre1 3,118 9/20/2018
3.2.0.871581 65,951 10/3/2018
3.2.0.839982 80,497 9/17/2018
3.2.0.809874-pre3 2,915 9/10/2018
3.2.0.729530-pre2 8,124 8/14/2018
3.2.0.637442-pre1 6,980 7/17/2018
3.1.0.697729 259,339 8/1/2018
3.1.0.637273 78,690 7/11/2018
3.1.0.583944 113,849 6/20/2018
3.1.0.561732-pre4 5,318 6/11/2018
3.1.0.550168-pre3 2,505 6/6/2018
3.1.0.530888-pre2 1,462 6/4/2018
3.1.0.469394-pre1 10,421 5/9/2018
3.0.0.561731 126,187 6/11/2018
3.0.0.550146 23,507 6/6/2018
3.0.0.530893 17,669 6/4/2018
3.0.0.482510 186,101 5/14/2018
3.0.0.446417 102,888 5/1/2018
3.0.0.427558-pre4 7,971 4/25/2018
3.0.0.354232-pre3 12,626 4/5/2018
3.0.0.296286-pre2 7,651 3/20/2018
2.5.1.527436 62,052 5/4/2018
2.5.1.444934 135,750 4/4/2018
2.5.1.392594-pre3 3,833 3/21/2018
2.5.1.340284-pre2 5,515 3/9/2018
2.5.1.317207-pre1 5,292 3/1/2018
2.5.0.280555 281,297 2/16/2018
2.5.0.122203 285,322 12/18/2017
2.5.0.121934 181,342 11/28/2017
2.5.0.91635 120,089 11/16/2017
2.5.0.77107 26,542 11/13/2017
2.5.0.75255-pre3 5,051 11/10/2017
2.5.0.19271-pre2 8,576 10/20/2017
2.4.0.91020 40,302 11/16/2017
2.4.0.74863 32,805 11/10/2017
2.4.0.38779 56,773 10/30/2017
2.4.0.18342 52,322 10/20/2017
2.4.0.282 151,187 9/29/2017
2.4.0.280 167,820 9/27/2017
2.4.0.275-pre3 7,695 9/19/2017
2.4.0.269-pre2 13,061 8/29/2017
2.4.0.266-pre1 17,964 8/16/2017
2.3.5.256-pre6 32,948 6/29/2017
2.3.5.255-pre5 4,545 6/26/2017
2.3.5.239-pre3 26,934 5/11/2017
2.3.5.235-pre2 10,842 4/26/2017
2.3.5.233-pre1 8,680 4/13/2017
2.3.4.270 125,265 8/29/2017
2.3.4.267 61,784 8/16/2017
2.3.4.247 373,903 5/16/2017
2.3.4.231 198,316 4/12/2017
2.3.4.224 237,783 3/29/2017
2.3.4.221-pre6 7,017 3/27/2017
2.3.4.214-pre5 9,869 3/14/2017
2.3.4.212-pre4 5,899 3/10/2017
2.3.4.211-pre3 3,739 3/9/2017
2.3.4.192-pre2 18,763 2/3/2017
2.3.4.184-pre1 12,037 1/13/2017
2.3.3.193 228,932 2/1/2017
2.3.3.180 202,484 1/5/2017
2.3.3.175 115,416 12/6/2016
2.3.3.168 64,237 11/23/2016
2.3.3.166-pre4 7,450 11/3/2016
2.3.3.163-pre3 6,136 10/17/2016
2.3.3.152-pre2 15,230 9/15/2016
2.3.2.127 258,111 9/14/2016
2.3.2.118-pre1 6,579 8/3/2016
2.3.1.114 152,483 8/3/2016
2.3.1.113-pre3 3,599 7/19/2016
2.3.1.111-pre2 4,551 7/4/2016
2.3.1.110-pre1 2,236 6/29/2016
2.3.0.107 193,939 6/29/2016
2.3.0.49 82,606 6/16/2016
2.3.0.46-pre3 15,401 5/30/2016
2.3.0.38-pre2 12,665 4/27/2016
2.3.0.34-pre1 8,352 4/27/2016
2.2.0.45 115,536 5/30/2016
2.2.0.31 125,110 4/27/2016
2.2.0.23-pre4 2,884 4/20/2016
2.2.0.18-pre3 2,082 4/20/2016
2.2.0.5-pre2 15,733 4/8/2016
2.2.0.4-pre1 18,268 4/5/2016
2.1.0.6529 95,757 3/13/2016
2.1.0.6526 16,953 3/9/2016
2.1.0.6524 31,135 3/2/2016
2.1.0.6521 11,524 3/1/2016
2.1.0.6517-pre5 1,836 2/18/2016
2.1.0.6513-pre4 1,820 2/9/2016
2.1.0.6508-pre3 2,126 1/28/2016
2.1.0.6503-pre2 6,721 1/22/2016
2.1.0.6501-pre1 1,257 1/21/2016
2.1.0.6500-pre1 1,111 1/20/2016
2.0.1.6505 91,160 1/28/2016
2.0.1.6495 73,856 1/20/2016
2.0.1.6492-pre1 3,536 12/3/2015
2.0.0.6490 94,689 12/1/2015
2.0.0.6484 17,405 11/21/2015
2.0.0.6482 231,922 11/17/2015
1.5.2.6478-pre3 960 11/17/2015
1.5.2.6477-pre2 3,547 11/10/2015
1.5.2.6469-pre1 1,887 10/20/2015
1.5.1.6471 74,580 10/20/2015
1.5.1.6468 3,578 10/20/2015
1.5.1.6460-pre2 1,343 10/13/2015
1.5.1.6455-pre1 2,660 10/2/2015
1.5.0.6447 51,085 9/25/2015
1.5.0.6446 20,974 9/16/2015
1.5.0.6404-pre3 3,022 8/25/2015
1.5.0.6401-pre2 1,164 8/21/2015
1.5.0.6396-pre1 1,682 8/5/2015
1.4.4.6449 2,404 9/25/2015
1.4.4.6443 1,376 9/16/2015
1.4.4.6392 74,819 7/29/2015
1.4.4.6391 1,745 7/28/2015
1.4.4.6387 2,644 7/27/2015
1.4.4.6379-pre3 1,238 7/20/2015
1.4.4.6378-pre2 1,075 7/16/2015
1.4.4.6377-pre1 1,056 7/14/2015
1.4.3.6376 40,157 7/9/2015
1.4.3.6374 16,157 7/1/2015
1.4.3.6372 1,798 6/30/2015
1.4.3.6364-pre3 2,023 6/16/2015
1.4.3.6358-pre2 5,465 4/24/2015
1.4.3.6356-pre1 1,121 4/21/2015
1.4.2.6359 59,404 4/30/2015
1.4.2.6355 13,823 4/21/2015
1.4.2.6353-pre2 2,209 3/31/2015
1.4.2.6350-pre1 1,305 3/30/2015
1.4.1.6349 43,688 3/30/2015
1.4.1.6347-pre2 2,978 3/19/2015
1.4.1.6342-pre1 1,397 3/10/2015
1.4.0.6341 28,159 3/9/2015
1.4.0.6340-pre2 2,189 3/6/2015
1.4.0.6336-pre1 1,274 3/3/2015
1.3.5.6337 4,829 3/5/2015
1.3.5.6335 23,022 3/2/2015
1.3.5.6333-pre1 1,673 2/17/2015
1.3.4.6332 17,930 2/17/2015
1.3.4.6331-pre4 1,210 2/13/2015
1.3.4.6329-pre3 1,001 2/12/2015
1.3.4.6328-pre2 1,021 2/11/2015
1.3.4.6325-pre1 1,002 2/9/2015
1.3.3.6323 51,288 2/9/2015
1.3.3.6322-pre3 957 2/6/2015
1.3.3.6321-pre2 1,130 2/4/2015
1.3.3.6318-pre1 1,091 2/2/2015
1.3.2.6316 7,335 2/3/2015
1.3.2.6313-pre3 1,065 1/30/2015
1.3.2.6309-pre2 1,125 1/28/2015
1.3.2.6299-pre1 1,838 1/20/2015
1.3.1.6296 53,612 1/4/2015
1.3.1.6294-pre1 4,114 12/24/2014
1.3.0.6292 9,185 12/24/2014
1.3.0.6286-pre4 1,885 12/19/2014
1.3.0.6284-pre3 1,394 12/12/2014
1.3.0.6280-pre2 1,306 12/9/2014
1.3.0.6275-pre1 7,577 11/12/2014
1.2.3.6257 37,864 10/2/2014
1.2.3.6256-pre4 2,014 9/26/2014
1.2.3.6255-pre3 2,403 9/20/2014
1.2.3.6249-pre2 1,589 9/9/2014
1.2.3.6246-pre1 4,107 8/15/2014
1.2.2.6243 27,929 7/30/2014
1.2.2.6241-pre3 2,529 7/28/2014
1.2.2.6240-pre2 4,353 7/22/2014
1.2.2.6238-pre1 3,462 7/17/2014
1.2.1.6229 8,106 7/14/2014
1.1.1.6206 13,941 6/19/2014
1.1.0.6201 13,003 6/12/2014
1.0.6197 3,918 6/4/2014
1.0.6188 11,335 5/28/2014
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