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There is a newer version of this package available.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
3.4.0.987044-pre2 536 11/8/2018
3.4.0.925479-pre1 4,554 10/18/2018
3.3.0.967583 21,100 11/1/2018
3.3.0.912540 47,364 10/18/2018
3.3.0.893527-pre3 3,004 10/11/2018
3.3.0.871608-pre2 5,011 10/1/2018
3.3.0.840541-pre1 2,811 9/20/2018
3.2.0.871581 50,984 10/3/2018
3.2.0.839982 60,808 9/17/2018
3.2.0.809874-pre3 2,567 9/10/2018
3.2.0.729530-pre2 6,884 8/14/2018
3.2.0.637442-pre1 6,515 7/17/2018
3.1.0.697729 221,031 8/1/2018
3.1.0.637273 69,044 7/11/2018
3.1.0.583944 106,040 6/20/2018
3.1.0.561732-pre4 4,958 6/11/2018
3.1.0.550168-pre3 2,247 6/6/2018
3.1.0.530888-pre2 1,265 6/4/2018
3.1.0.469394-pre1 9,977 5/9/2018
3.0.0.561731 117,048 6/11/2018
3.0.0.550146 22,164 6/6/2018
3.0.0.530893 16,199 6/4/2018
3.0.0.482510 168,835 5/14/2018
3.0.0.446417 92,890 5/1/2018
3.0.0.427558-pre4 7,541 4/25/2018
3.0.0.354232-pre3 12,024 4/5/2018
3.0.0.296286-pre2 7,341 3/20/2018
2.5.1.527436 53,903 5/4/2018
2.5.1.444934 122,402 4/4/2018
2.5.1.392594-pre3 3,622 3/21/2018
2.5.1.340284-pre2 5,277 3/9/2018
2.5.1.317207-pre1 5,064 3/1/2018
2.5.0.280555 268,157 2/16/2018
2.5.0.122203 270,668 12/18/2017
2.5.0.121934 171,876 11/28/2017
2.5.0.91635 116,899 11/16/2017
2.5.0.77107 25,210 11/13/2017
2.5.0.75255-pre3 4,825 11/10/2017
2.5.0.19271-pre2 8,197 10/20/2017
2.4.0.91020 37,820 11/16/2017
2.4.0.74863 32,008 11/10/2017
2.4.0.38779 55,550 10/30/2017
2.4.0.18342 50,923 10/20/2017
2.4.0.282 147,262 9/29/2017
2.4.0.280 157,225 9/27/2017
2.4.0.275-pre3 7,463 9/19/2017
2.4.0.269-pre2 12,743 8/29/2017
2.4.0.266-pre1 17,312 8/16/2017
2.3.5.256-pre6 31,895 6/29/2017
2.3.5.255-pre5 4,336 6/26/2017
2.3.5.239-pre3 26,517 5/11/2017
2.3.5.235-pre2 10,593 4/26/2017
2.3.5.233-pre1 8,419 4/13/2017
2.3.4.270 120,840 8/29/2017
2.3.4.267 59,828 8/16/2017
2.3.4.247 365,243 5/16/2017
2.3.4.231 194,751 4/12/2017
2.3.4.224 233,709 3/29/2017
2.3.4.221-pre6 6,786 3/27/2017
2.3.4.214-pre5 9,611 3/14/2017
2.3.4.212-pre4 5,667 3/10/2017
2.3.4.211-pre3 3,523 3/9/2017
2.3.4.192-pre2 18,434 2/3/2017
2.3.4.184-pre1 11,611 1/13/2017
2.3.3.193 223,983 2/1/2017
2.3.3.180 200,139 1/5/2017
2.3.3.175 114,483 12/6/2016
2.3.3.168 63,529 11/23/2016
2.3.3.166-pre4 7,099 11/3/2016
2.3.3.163-pre3 5,999 10/17/2016
2.3.3.152-pre2 14,845 9/15/2016
2.3.2.127 255,551 9/14/2016
2.3.2.118-pre1 6,444 8/3/2016
2.3.1.114 151,155 8/3/2016
2.3.1.113-pre3 3,442 7/19/2016
2.3.1.111-pre2 4,393 7/4/2016
2.3.1.110-pre1 2,080 6/29/2016
2.3.0.107 192,891 6/29/2016
2.3.0.49 80,671 6/16/2016
2.3.0.46-pre3 15,105 5/30/2016
2.3.0.38-pre2 12,363 4/27/2016
2.3.0.34-pre1 8,146 4/27/2016
2.2.0.45 113,695 5/30/2016
2.2.0.31 124,048 4/27/2016
2.2.0.23-pre4 2,758 4/20/2016
2.2.0.18-pre3 1,959 4/20/2016
2.2.0.5-pre2 15,610 4/8/2016
2.2.0.4-pre1 18,143 4/5/2016
2.1.0.6529 94,645 3/13/2016
2.1.0.6526 16,704 3/9/2016
2.1.0.6524 28,498 3/2/2016
2.1.0.6521 11,233 3/1/2016
2.1.0.6517-pre5 1,649 2/18/2016
2.1.0.6513-pre4 1,632 2/9/2016
2.1.0.6508-pre3 1,936 1/28/2016
2.1.0.6503-pre2 6,526 1/22/2016
2.1.0.6501-pre1 1,068 1/21/2016
2.1.0.6500-pre1 919 1/20/2016
2.0.1.6505 90,372 1/28/2016
2.0.1.6495 73,307 1/20/2016
2.0.1.6492-pre1 3,355 12/3/2015
2.0.0.6490 93,720 12/1/2015
2.0.0.6484 17,176 11/21/2015
2.0.0.6482 229,500 11/17/2015
1.5.2.6478-pre3 778 11/17/2015
1.5.2.6477-pre2 3,340 11/10/2015
1.5.2.6469-pre1 1,660 10/20/2015
1.5.1.6471 73,830 10/20/2015
1.5.1.6468 3,364 10/20/2015
1.5.1.6460-pre2 1,155 10/13/2015
1.5.1.6455-pre1 2,462 10/2/2015
1.5.0.6447 49,821 9/25/2015
1.5.0.6446 20,658 9/16/2015
1.5.0.6404-pre3 2,821 8/25/2015
1.5.0.6401-pre2 974 8/21/2015
1.5.0.6396-pre1 1,494 8/5/2015
1.4.4.6449 2,194 9/25/2015
1.4.4.6443 1,179 9/16/2015
1.4.4.6392 74,019 7/29/2015
1.4.4.6391 1,554 7/28/2015
1.4.4.6387 2,448 7/27/2015
1.4.4.6379-pre3 1,046 7/20/2015
1.4.4.6378-pre2 880 7/16/2015
1.4.4.6377-pre1 861 7/14/2015
1.4.3.6376 39,139 7/9/2015
1.4.3.6374 15,887 7/1/2015
1.4.3.6372 1,598 6/30/2015
1.4.3.6364-pre3 1,822 6/16/2015
1.4.3.6358-pre2 5,254 4/24/2015
1.4.3.6356-pre1 929 4/21/2015
1.4.2.6359 58,247 4/30/2015
1.4.2.6355 13,519 4/21/2015
1.4.2.6353-pre2 2,019 3/31/2015
1.4.2.6350-pre1 1,112 3/30/2015
1.4.1.6349 43,319 3/30/2015
1.4.1.6347-pre2 2,785 3/19/2015
1.4.1.6342-pre1 1,205 3/10/2015
1.4.0.6341 27,806 3/9/2015
1.4.0.6340-pre2 1,983 3/6/2015
1.4.0.6336-pre1 1,086 3/3/2015
1.3.5.6337 4,634 3/5/2015
1.3.5.6335 22,403 3/2/2015
1.3.5.6333-pre1 1,477 2/17/2015
1.3.4.6332 17,432 2/17/2015
1.3.4.6331-pre4 1,022 2/13/2015
1.3.4.6329-pre3 810 2/12/2015
1.3.4.6328-pre2 837 2/11/2015
1.3.4.6325-pre1 813 2/9/2015
1.3.3.6323 50,544 2/9/2015
1.3.3.6322-pre3 770 2/6/2015
1.3.3.6321-pre2 942 2/4/2015
1.3.3.6318-pre1 904 2/2/2015
1.3.2.6316 7,102 2/3/2015
1.3.2.6313-pre3 876 1/30/2015
1.3.2.6309-pre2 929 1/28/2015
1.3.2.6299-pre1 1,643 1/20/2015
1.3.1.6296 52,747 1/4/2015
1.3.1.6294-pre1 3,917 12/24/2014
1.3.0.6292 8,945 12/24/2014
1.3.0.6286-pre4 1,694 12/19/2014
1.3.0.6284-pre3 1,207 12/12/2014
1.3.0.6280-pre2 1,121 12/9/2014
1.3.0.6275-pre1 7,388 11/12/2014
1.2.3.6257 37,356 10/2/2014
1.2.3.6256-pre4 1,817 9/26/2014
1.2.3.6255-pre3 2,207 9/20/2014
1.2.3.6249-pre2 1,405 9/9/2014
1.2.3.6246-pre1 3,908 8/15/2014
1.2.2.6243 27,539 7/30/2014
1.2.2.6241-pre3 2,339 7/28/2014
1.2.2.6240-pre2 4,160 7/22/2014
1.2.2.6238-pre1 3,260 7/17/2014
1.2.1.6229 7,860 7/14/2014
1.1.1.6206 13,737 6/19/2014
1.1.0.6201 12,683 6/12/2014
1.0.6197 3,708 6/4/2014
1.0.6188 11,076 5/28/2014
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