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There is a newer version of this package available.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
3.1.0.637273 7,970 7/11/2018
3.1.0.583944 53,742 6/20/2018
3.1.0.561732-pre4 3,333 6/11/2018
3.1.0.550168-pre3 1,935 6/6/2018
3.1.0.530888-pre2 1,013 6/4/2018
3.1.0.469394-pre1 8,337 5/9/2018
3.0.0.561731 53,272 6/11/2018
3.0.0.550146 16,644 6/6/2018
3.0.0.530893 11,603 6/4/2018
3.0.0.482510 115,469 5/14/2018
3.0.0.446417 68,222 5/1/2018
3.0.0.427558-pre4 6,738 4/25/2018
3.0.0.354232-pre3 9,660 4/5/2018
3.0.0.296286-pre2 6,739 3/20/2018
2.5.1.527436 32,146 5/4/2018
2.5.1.444934 99,921 4/4/2018
2.5.1.392594-pre3 3,250 3/21/2018
2.5.1.340284-pre2 4,877 3/9/2018
2.5.1.317207-pre1 4,751 3/1/2018
2.5.0.280555 233,716 2/16/2018
2.5.0.122203 231,616 12/18/2017
2.5.0.121934 151,844 11/28/2017
2.5.0.91635 101,863 11/16/2017
2.5.0.77107 22,543 11/13/2017
2.5.0.75255-pre3 4,459 11/10/2017
2.5.0.19271-pre2 7,581 10/20/2017
2.4.0.91020 32,098 11/16/2017
2.4.0.74863 30,245 11/10/2017
2.4.0.38779 53,145 10/30/2017
2.4.0.18342 47,779 10/20/2017
2.4.0.282 137,597 9/29/2017
2.4.0.280 134,070 9/27/2017
2.4.0.275-pre3 7,090 9/19/2017
2.4.0.269-pre2 12,267 8/29/2017
2.4.0.266-pre1 15,863 8/16/2017
2.3.5.256-pre6 29,456 6/29/2017
2.3.5.255-pre5 4,065 6/26/2017
2.3.5.239-pre3 25,557 5/11/2017
2.3.5.235-pre2 10,189 4/26/2017
2.3.5.233-pre1 7,973 4/13/2017
2.3.4.270 110,512 8/29/2017
2.3.4.267 56,026 8/16/2017
2.3.4.247 345,104 5/16/2017
2.3.4.231 186,602 4/12/2017
2.3.4.224 225,871 3/29/2017
2.3.4.221-pre6 6,472 3/27/2017
2.3.4.214-pre5 9,288 3/14/2017
2.3.4.212-pre4 5,401 3/10/2017
2.3.4.211-pre3 3,236 3/9/2017
2.3.4.192-pre2 17,916 2/3/2017
2.3.4.184-pre1 10,909 1/13/2017
2.3.3.193 212,794 2/1/2017
2.3.3.180 194,847 1/5/2017
2.3.3.175 112,379 12/6/2016
2.3.3.168 62,177 11/23/2016
2.3.3.166-pre4 6,610 11/3/2016
2.3.3.163-pre3 5,655 10/17/2016
2.3.3.152-pre2 14,026 9/15/2016
2.3.2.127 249,397 9/14/2016
2.3.2.118-pre1 6,134 8/3/2016
2.3.1.114 147,950 8/3/2016
2.3.1.113-pre3 3,127 7/19/2016
2.3.1.111-pre2 4,098 7/4/2016
2.3.1.110-pre1 1,771 6/29/2016
2.3.0.107 190,272 6/29/2016
2.3.0.49 75,863 6/16/2016
2.3.0.46-pre3 14,374 5/30/2016
2.3.0.38-pre2 11,775 4/27/2016
2.3.0.34-pre1 7,695 4/27/2016
2.2.0.45 109,019 5/30/2016
2.2.0.31 121,550 4/27/2016
2.2.0.23-pre4 2,456 4/20/2016
2.2.0.18-pre3 1,662 4/20/2016
2.2.0.5-pre2 15,302 4/8/2016
2.2.0.4-pre1 17,836 4/5/2016
2.1.0.6529 92,431 3/13/2016
2.1.0.6526 16,280 3/9/2016
2.1.0.6524 26,169 3/2/2016
2.1.0.6521 10,697 3/1/2016
2.1.0.6517-pre5 1,352 2/18/2016
2.1.0.6513-pre4 1,335 2/9/2016
2.1.0.6508-pre3 1,633 1/28/2016
2.1.0.6503-pre2 6,222 1/22/2016
2.1.0.6501-pre1 772 1/21/2016
2.1.0.6500-pre1 621 1/20/2016
2.0.1.6505 88,666 1/28/2016
2.0.1.6495 72,120 1/20/2016
2.0.1.6492-pre1 3,057 12/3/2015
2.0.0.6490 91,315 12/1/2015
2.0.0.6484 16,782 11/21/2015
2.0.0.6482 223,877 11/17/2015
1.5.2.6478-pre3 487 11/17/2015
1.5.2.6477-pre2 2,996 11/10/2015
1.5.2.6469-pre1 1,364 10/20/2015
1.5.1.6471 72,291 10/20/2015
1.5.1.6468 3,034 10/20/2015
1.5.1.6460-pre2 853 10/13/2015
1.5.1.6455-pre1 2,135 10/2/2015
1.5.0.6447 47,564 9/25/2015
1.5.0.6446 20,056 9/16/2015
1.5.0.6404-pre3 2,518 8/25/2015
1.5.0.6401-pre2 676 8/21/2015
1.5.0.6396-pre1 1,196 8/5/2015
1.4.4.6449 1,870 9/25/2015
1.4.4.6443 881 9/16/2015
1.4.4.6392 72,151 7/29/2015
1.4.4.6391 1,248 7/28/2015
1.4.4.6387 2,148 7/27/2015
1.4.4.6379-pre3 754 7/20/2015
1.4.4.6378-pre2 588 7/16/2015
1.4.4.6377-pre1 565 7/14/2015
1.4.3.6376 37,084 7/9/2015
1.4.3.6374 15,411 7/1/2015
1.4.3.6372 1,302 6/30/2015
1.4.3.6364-pre3 1,520 6/16/2015
1.4.3.6358-pre2 4,921 4/24/2015
1.4.3.6356-pre1 638 4/21/2015
1.4.2.6359 55,852 4/30/2015
1.4.2.6355 12,920 4/21/2015
1.4.2.6353-pre2 1,720 3/31/2015
1.4.2.6350-pre1 817 3/30/2015
1.4.1.6349 42,620 3/30/2015
1.4.1.6347-pre2 2,493 3/19/2015
1.4.1.6342-pre1 919 3/10/2015
1.4.0.6341 27,188 3/9/2015
1.4.0.6340-pre2 1,635 3/6/2015
1.4.0.6336-pre1 797 3/3/2015
1.3.5.6337 4,321 3/5/2015
1.3.5.6335 21,240 3/2/2015
1.3.5.6333-pre1 1,173 2/17/2015
1.3.4.6332 16,506 2/17/2015
1.3.4.6331-pre4 733 2/13/2015
1.3.4.6329-pre3 523 2/12/2015
1.3.4.6328-pre2 551 2/11/2015
1.3.4.6325-pre1 524 2/9/2015
1.3.3.6323 49,015 2/9/2015
1.3.3.6322-pre3 485 2/6/2015
1.3.3.6321-pre2 652 2/4/2015
1.3.3.6318-pre1 610 2/2/2015
1.3.2.6316 6,716 2/3/2015
1.3.2.6313-pre3 584 1/30/2015
1.3.2.6309-pre2 640 1/28/2015
1.3.2.6299-pre1 1,352 1/20/2015
1.3.1.6296 51,166 1/4/2015
1.3.1.6294-pre1 3,572 12/24/2014
1.3.0.6292 8,554 12/24/2014
1.3.0.6286-pre4 1,400 12/19/2014
1.3.0.6284-pre3 917 12/12/2014
1.3.0.6280-pre2 (current) 831 12/9/2014
1.3.0.6275-pre1 7,095 11/12/2014
1.2.3.6257 36,476 10/2/2014
1.2.3.6256-pre4 1,519 9/26/2014
1.2.3.6255-pre3 1,907 9/20/2014
1.2.3.6249-pre2 1,114 9/9/2014
1.2.3.6246-pre1 3,568 8/15/2014
1.2.2.6243 26,745 7/30/2014
1.2.2.6241-pre3 2,043 7/28/2014
1.2.2.6240-pre2 3,843 7/22/2014
1.2.2.6238-pre1 2,933 7/17/2014
1.2.1.6229 7,427 7/14/2014
1.1.1.6206 13,416 6/19/2014
1.1.0.6201 12,157 6/12/2014
1.0.6197 3,344 6/4/2014
1.0.6188 10,598 5/28/2014
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