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There is a newer version of this package available.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
<PackageReference Include="Xamarin.Forms" Version="1.3.0.6280-pre2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
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
4.0.0.425677 6,414 5/14/2019
4.0.0.394984-pre10 6,635 5/3/2019
4.0.0.346134-pre9 6,948 4/18/2019
4.0.0.304370-pre8 7,358 4/3/2019
4.0.0.250467-pre7 4,865 3/20/2019
4.0.0.232914-pre6 5,955 3/14/2019
4.0.0.169046-pre5 5,259 2/21/2019
4.0.0.135214-pre4 4,010 2/6/2019
4.0.0.94569-pre3 3,856 1/24/2019
4.0.0.62955-pre2 11,630 1/10/2019
4.0.0.8055-pre1 12,085 12/4/2018
3.6.0.344457 68,973 4/18/2019
3.6.0.293080 49,888 4/3/2019
3.6.0.264807 80,767 3/19/2019
3.6.0.220655 65,224 3/6/2019
3.6.0.169048-pre2 448 2/21/2019
3.6.0.135200-pre1 3,740 2/6/2019
3.5.0.274416 4,151 3/26/2019
3.5.0.169047 56,390 2/20/2019
3.5.0.129452 71,198 2/6/2019
3.5.0.94564-pre3 1,012 1/24/2019
3.5.0.62956-pre2 848 1/10/2019
3.4.0.1039999 3,333 3/26/2019
3.4.0.1029999 67,350 1/24/2019
3.4.0.1009999 79,640 1/4/2019
3.4.0.1008975 337,577 11/15/2018
3.4.0.987044-pre2 2,211 11/8/2018
3.4.0.925479-pre1 8,737 10/18/2018
3.3.0.967583 143,436 11/1/2018
3.3.0.912540 99,076 10/18/2018
3.3.0.893527-pre3 5,956 10/11/2018
3.3.0.871608-pre2 9,181 10/1/2018
3.3.0.840541-pre1 4,541 9/20/2018
3.2.0.871581 86,842 10/3/2018
3.2.0.839982 111,507 9/17/2018
3.2.0.809874-pre3 3,437 9/10/2018
3.2.0.729530-pre2 10,659 8/14/2018
3.2.0.637442-pre1 8,674 7/17/2018
3.1.0.697729 300,854 8/1/2018
3.1.0.637273 93,369 7/11/2018
3.1.0.583944 126,129 6/20/2018
3.1.0.561732-pre4 5,894 6/11/2018
3.1.0.550168-pre3 2,889 6/6/2018
3.1.0.530888-pre2 1,755 6/4/2018
3.1.0.469394-pre1 11,016 5/9/2018
3.0.0.561731 137,820 6/11/2018
3.0.0.550146 25,841 6/6/2018
3.0.0.530893 19,877 6/4/2018
3.0.0.482510 213,488 5/14/2018
3.0.0.446417 117,544 5/1/2018
3.0.0.427558-pre4 8,701 4/25/2018
3.0.0.354232-pre3 13,476 4/5/2018
3.0.0.296286-pre2 8,113 3/20/2018
2.5.1.527436 79,900 5/4/2018
2.5.1.444934 155,382 4/4/2018
2.5.1.392594-pre3 4,127 3/21/2018
2.5.1.340284-pre2 5,917 3/9/2018
2.5.1.317207-pre1 5,601 3/1/2018
2.5.0.280555 306,177 2/16/2018
2.5.0.122203 310,992 12/18/2017
2.5.0.121934 200,297 11/28/2017
2.5.0.91635 128,682 11/16/2017
2.5.0.77107 28,415 11/13/2017
2.5.0.75255-pre3 5,371 11/10/2017
2.5.0.19271-pre2 9,157 10/20/2017
2.4.0.91020 44,667 11/16/2017
2.4.0.74863 34,073 11/10/2017
2.4.0.38779 58,960 10/30/2017
2.4.0.18342 54,588 10/20/2017
2.4.0.282 157,541 9/29/2017
2.4.0.280 188,043 9/27/2017
2.4.0.275-pre3 8,021 9/19/2017
2.4.0.269-pre2 13,539 8/29/2017
2.4.0.266-pre1 19,096 8/16/2017
2.3.5.256-pre6 34,786 6/29/2017
2.3.5.255-pre5 4,818 6/26/2017
2.3.5.239-pre3 27,656 5/11/2017
2.3.5.235-pre2 11,199 4/26/2017
2.3.5.233-pre1 9,045 4/13/2017
2.3.4.270 134,089 8/29/2017
2.3.4.267 65,446 8/16/2017
2.3.4.247 391,295 5/16/2017
2.3.4.231 204,642 4/12/2017
2.3.4.224 245,199 3/29/2017
2.3.4.221-pre6 7,338 3/27/2017
2.3.4.214-pre5 10,231 3/14/2017
2.3.4.212-pre4 6,180 3/10/2017
2.3.4.211-pre3 4,025 3/9/2017
2.3.4.192-pre2 19,232 2/3/2017
2.3.4.184-pre1 12,691 1/13/2017
2.3.3.193 239,663 2/1/2017
2.3.3.180 206,814 1/5/2017
2.3.3.175 117,137 12/6/2016
2.3.3.168 65,817 11/23/2016
2.3.3.166-pre4 7,856 11/3/2016
2.3.3.163-pre3 6,380 10/17/2016
2.3.3.152-pre2 15,799 9/15/2016
2.3.2.127 264,134 9/14/2016
2.3.2.118-pre1 6,797 8/3/2016
2.3.1.114 154,758 8/3/2016
2.3.1.113-pre3 3,813 7/19/2016
2.3.1.111-pre2 4,763 7/4/2016
2.3.1.110-pre1 2,452 6/29/2016
2.3.0.107 196,855 6/29/2016
2.3.0.49 85,964 6/16/2016
2.3.0.46-pre3 15,946 5/30/2016
2.3.0.38-pre2 13,074 4/27/2016
2.3.0.34-pre1 8,690 4/27/2016
2.2.0.45 120,512 5/30/2016
2.2.0.31 126,870 4/27/2016
2.2.0.23-pre4 3,091 4/20/2016
2.2.0.18-pre3 2,302 4/20/2016
2.2.0.5-pre2 15,978 4/8/2016
2.2.0.4-pre1 18,515 4/5/2016
2.1.0.6529 97,602 3/13/2016
2.1.0.6526 17,430 3/9/2016
2.1.0.6524 36,000 3/2/2016
2.1.0.6521 11,998 3/1/2016
2.1.0.6517-pre5 2,140 2/18/2016
2.1.0.6513-pre4 2,121 2/9/2016
2.1.0.6508-pre3 2,444 1/28/2016
2.1.0.6503-pre2 7,029 1/22/2016
2.1.0.6501-pre1 1,588 1/21/2016
2.1.0.6500-pre1 1,409 1/20/2016
2.0.1.6505 92,519 1/28/2016
2.0.1.6495 74,748 1/20/2016
2.0.1.6492-pre1 3,874 12/3/2015
2.0.0.6490 96,470 12/1/2015
2.0.0.6484 17,777 11/21/2015
2.0.0.6482 236,819 11/17/2015
1.5.2.6478-pre3 1,297 11/17/2015
1.5.2.6477-pre2 3,895 11/10/2015
1.5.2.6469-pre1 2,203 10/20/2015
1.5.1.6471 75,999 10/20/2015
1.5.1.6468 3,920 10/20/2015
1.5.1.6460-pre2 1,678 10/13/2015
1.5.1.6455-pre1 3,030 10/2/2015
1.5.0.6447 53,849 9/25/2015
1.5.0.6446 21,535 9/16/2015
1.5.0.6404-pre3 3,325 8/25/2015
1.5.0.6401-pre2 1,529 8/21/2015
1.5.0.6396-pre1 1,986 8/5/2015
1.4.4.6449 2,723 9/25/2015
1.4.4.6443 1,674 9/16/2015
1.4.4.6392 76,447 7/29/2015
1.4.4.6391 2,035 7/28/2015
1.4.4.6387 2,974 7/27/2015
1.4.4.6379-pre3 1,558 7/20/2015
1.4.4.6378-pre2 1,385 7/16/2015
1.4.4.6377-pre1 1,379 7/14/2015
1.4.3.6376 41,545 7/9/2015
1.4.3.6374 16,583 7/1/2015
1.4.3.6372 2,094 6/30/2015
1.4.3.6364-pre3 2,349 6/16/2015
1.4.3.6358-pre2 5,779 4/24/2015
1.4.3.6356-pre1 1,484 4/21/2015
1.4.2.6359 61,364 4/30/2015
1.4.2.6355 14,294 4/21/2015
1.4.2.6353-pre2 2,527 3/31/2015
1.4.2.6350-pre1 1,586 3/30/2015
1.4.1.6349 44,317 3/30/2015
1.4.1.6347-pre2 3,264 3/19/2015
1.4.1.6342-pre1 1,727 3/10/2015
1.4.0.6341 28,763 3/9/2015
1.4.0.6340-pre2 2,552 3/6/2015
1.4.0.6336-pre1 1,550 3/3/2015
1.3.5.6337 5,133 3/5/2015
1.3.5.6335 24,698 3/2/2015
1.3.5.6333-pre1 2,115 2/17/2015
1.3.4.6332 18,916 2/17/2015
1.3.4.6331-pre4 1,576 2/13/2015
1.3.4.6329-pre3 1,312 2/12/2015
1.3.4.6328-pre2 1,314 2/11/2015
1.3.4.6325-pre1 1,280 2/9/2015
1.3.3.6323 52,500 2/9/2015
1.3.3.6322-pre3 1,276 2/6/2015
1.3.3.6321-pre2 1,436 2/4/2015
1.3.3.6318-pre1 1,443 2/2/2015
1.3.2.6316 7,740 2/3/2015
1.3.2.6313-pre3 1,421 1/30/2015
1.3.2.6309-pre2 1,466 1/28/2015
1.3.2.6299-pre1 2,179 1/20/2015
1.3.1.6296 55,247 1/4/2015
1.3.1.6294-pre1 4,470 12/24/2014
1.3.0.6292 9,609 12/24/2014
1.3.0.6286-pre4 2,180 12/19/2014
1.3.0.6284-pre3 1,680 12/12/2014
1.3.0.6280-pre2 1,632 12/9/2014
1.3.0.6275-pre1 7,910 11/12/2014
1.2.3.6257 38,806 10/2/2014
1.2.3.6256-pre4 2,323 9/26/2014
1.2.3.6255-pre3 2,725 9/20/2014
1.2.3.6249-pre2 1,895 9/9/2014
1.2.3.6246-pre1 4,440 8/15/2014
1.2.2.6243 28,587 7/30/2014
1.2.2.6241-pre3 2,831 7/28/2014
1.2.2.6240-pre2 4,670 7/22/2014
1.2.2.6238-pre1 3,802 7/17/2014
1.2.1.6229 8,536 7/14/2014
1.1.1.6206 14,252 6/19/2014
1.1.0.6201 13,508 6/12/2014
1.0.6197 4,241 6/4/2014
1.0.6188 11,740 5/28/2014
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