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 prerelease 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
3.1.0.469394-pre1 2,930 5/9/2018
3.0.0.482510 17,433 5/14/2018
3.0.0.446417 41,856 5/1/2018
3.0.0.427558-pre4 4,367 4/25/2018
3.0.0.354232-pre3 6,495 4/5/2018
3.0.0.296286-pre2 5,019 3/20/2018
2.5.1.527436 13,513 5/4/2018
2.5.1.444934 75,552 4/4/2018
2.5.1.392594-pre3 1,303 3/21/2018
2.5.1.340284-pre2 3,103 3/9/2018
2.5.1.317207-pre1 2,674 3/1/2018
2.5.0.280555 205,242 2/16/2018
2.5.0.122203 202,486 12/18/2017
2.5.0.121934 137,746 11/28/2017
2.5.0.91635 90,081 11/16/2017
2.5.0.77107 18,654 11/13/2017
2.5.0.75255-pre3 2,541 11/10/2017
2.5.0.19271-pre2 5,703 10/20/2017
2.4.0.91020 25,335 11/16/2017
2.4.0.74863 26,711 11/10/2017
2.4.0.38779 49,376 10/30/2017
2.4.0.18342 43,802 10/20/2017
2.4.0.282 129,855 9/29/2017
2.4.0.280 118,706 9/27/2017
2.4.0.275-pre3 5,191 9/19/2017
2.4.0.269-pre2 10,479 8/29/2017
2.4.0.266-pre1 12,994 8/16/2017
2.3.5.256-pre6 26,911 6/29/2017
2.3.5.255-pre5 2,315 6/26/2017
2.3.5.239-pre3 23,215 5/11/2017
2.3.5.235-pre2 8,390 4/26/2017
2.3.5.233-pre1 6,250 4/13/2017
2.3.4.270 102,540 8/29/2017
2.3.4.267 52,807 8/16/2017
2.3.4.247 331,083 5/16/2017
2.3.4.231 179,419 4/12/2017
2.3.4.224 219,546 3/29/2017
2.3.4.221-pre6 4,971 3/27/2017
2.3.4.214-pre5 7,885 3/14/2017
2.3.4.212-pre4 3,845 3/10/2017
2.3.4.211-pre3 1,541 3/9/2017
2.3.4.192-pre2 16,159 2/3/2017
2.3.4.184-pre1 9,091 1/13/2017
2.3.3.193 205,254 2/1/2017
2.3.3.180 191,641 1/5/2017
2.3.3.175 110,989 12/6/2016
2.3.3.168 61,270 11/23/2016
2.3.3.166-pre4 6,420 11/3/2016
2.3.3.163-pre3 5,563 10/17/2016
2.3.3.152-pre2 13,574 9/15/2016
2.3.2.127 245,407 9/14/2016
2.3.2.118-pre1 6,058 8/3/2016
2.3.1.114 145,875 8/3/2016
2.3.1.113-pre3 3,041 7/19/2016
2.3.1.111-pre2 4,021 7/4/2016
2.3.1.110-pre1 1,698 6/29/2016
2.3.0.107 188,149 6/29/2016
2.3.0.49 72,853 6/16/2016
2.3.0.46-pre3 14,045 5/30/2016
2.3.0.38-pre2 11,607 4/27/2016
2.3.0.34-pre1 7,543 4/27/2016
2.2.0.45 106,270 5/30/2016
2.2.0.31 120,210 4/27/2016
2.2.0.23-pre4 2,389 4/20/2016
2.2.0.18-pre3 1,597 4/20/2016
2.2.0.5-pre2 15,224 4/8/2016
2.2.0.4-pre1 17,764 4/5/2016
2.1.0.6529 91,283 3/13/2016
2.1.0.6526 16,081 3/9/2016
2.1.0.6524 25,845 3/2/2016
2.1.0.6521 10,409 3/1/2016
2.1.0.6517-pre5 1,286 2/18/2016
2.1.0.6513-pre4 1,268 2/9/2016
2.1.0.6508-pre3 1,568 1/28/2016
2.1.0.6503-pre2 6,153 1/22/2016
2.1.0.6501-pre1 706 1/21/2016
2.1.0.6500-pre1 555 1/20/2016
2.0.1.6505 87,712 1/28/2016
2.0.1.6495 71,366 1/20/2016
2.0.1.6492-pre1 2,992 12/3/2015
2.0.0.6490 90,087 12/1/2015
2.0.0.6484 16,648 11/21/2015
2.0.0.6482 220,627 11/17/2015
1.5.2.6478-pre3 428 11/17/2015
1.5.2.6477-pre2 2,902 11/10/2015
1.5.2.6469-pre1 1,299 10/20/2015
1.5.1.6471 71,529 10/20/2015
1.5.1.6468 2,947 10/20/2015
1.5.1.6460-pre2 787 10/13/2015
1.5.1.6455-pre1 2,059 10/2/2015
1.5.0.6447 46,391 9/25/2015
1.5.0.6446 19,794 9/16/2015
1.5.0.6404-pre3 2,443 8/25/2015
1.5.0.6401-pre2 608 8/21/2015
1.5.0.6396-pre1 1,134 8/5/2015
1.4.4.6449 1,778 9/25/2015
1.4.4.6443 813 9/16/2015
1.4.4.6392 71,106 7/29/2015
1.4.4.6391 1,184 7/28/2015
1.4.4.6387 2,082 7/27/2015
1.4.4.6379-pre3 693 7/20/2015
1.4.4.6378-pre2 528 7/16/2015
1.4.4.6377-pre1 504 7/14/2015
1.4.3.6376 36,013 7/9/2015
1.4.3.6374 15,139 7/1/2015
1.4.3.6372 1,239 6/30/2015
1.4.3.6364-pre3 1,457 6/16/2015
1.4.3.6358-pre2 4,829 4/24/2015
1.4.3.6356-pre1 579 4/21/2015
1.4.2.6359 54,048 4/30/2015
1.4.2.6355 12,697 4/21/2015
1.4.2.6353-pre2 1,650 3/31/2015
1.4.2.6350-pre1 750 3/30/2015
1.4.1.6349 42,356 3/30/2015
1.4.1.6347-pre2 2,433 3/19/2015
1.4.1.6342-pre1 859 3/10/2015
1.4.0.6341 26,927 3/9/2015
1.4.0.6340-pre2 1,543 3/6/2015
1.4.0.6336-pre1 741 3/3/2015
1.3.5.6337 4,247 3/5/2015
1.3.5.6335 20,663 3/2/2015
1.3.5.6333-pre1 1,113 2/17/2015
1.3.4.6332 16,233 2/17/2015
1.3.4.6331-pre4 676 2/13/2015
1.3.4.6329-pre3 463 2/12/2015
1.3.4.6328-pre2 492 2/11/2015
1.3.4.6325-pre1 466 2/9/2015
1.3.3.6323 48,218 2/9/2015
1.3.3.6322-pre3 426 2/6/2015
1.3.3.6321-pre2 593 2/4/2015
1.3.3.6318-pre1 552 2/2/2015
1.3.2.6316 6,618 2/3/2015
1.3.2.6313-pre3 526 1/30/2015
1.3.2.6309-pre2 582 1/28/2015
1.3.2.6299-pre1 1,294 1/20/2015
1.3.1.6296 50,365 1/4/2015
1.3.1.6294-pre1 3,503 12/24/2014
1.3.0.6292 8,443 12/24/2014
1.3.0.6286-pre4 1,339 12/19/2014
1.3.0.6284-pre3 860 12/12/2014
1.3.0.6280-pre2 (current) 773 12/9/2014
1.3.0.6275-pre1 7,031 11/12/2014
1.2.3.6257 36,053 10/2/2014
1.2.3.6256-pre4 1,460 9/26/2014
1.2.3.6255-pre3 1,845 9/20/2014
1.2.3.6249-pre2 1,056 9/9/2014
1.2.3.6246-pre1 3,492 8/15/2014
1.2.2.6243 26,400 7/30/2014
1.2.2.6241-pre3 1,980 7/28/2014
1.2.2.6240-pre2 3,781 7/22/2014
1.2.2.6238-pre1 2,843 7/17/2014
1.2.1.6229 7,290 7/14/2014
1.1.1.6206 13,341 6/19/2014
1.1.0.6201 11,949 6/12/2014
1.0.6197 3,246 6/4/2014
1.0.6188 10,445 5/28/2014
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