Xamarin.Forms.Maps 1.4.0.6336-pre1

Maps models and renderers for Xamarin.Forms

This is a prerelease version of Xamarin.Forms.Maps.
There is a newer version of this package available.
See the version list below for details.
Install-Package Xamarin.Forms.Maps -Version 1.4.0.6336-pre1
dotnet add package Xamarin.Forms.Maps --version 1.4.0.6336-pre1
<PackageReference Include="Xamarin.Forms.Maps" Version="1.4.0.6336-pre1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Xamarin.Forms.Maps --version 1.4.0.6336-pre1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

## Important Notes ##

This is a feature release. As such unlike a patch version bump, the minor version bump indicates the inclusion of new APIs. There should be no breaking changes; however with all feature work, there is the potential for the inclusion of instability. Please help us beta test this release and let us know of any issues you run across.

## New API ##

### ScrollView ###

It is now possible to detect the current scroll offset of the ScrollView. These are readonly bindable properties.
```csharp
public double ScrollX { get; }
public double ScrollY { get; }
```

There are also methods which can be used to perform scrolling in the ScrollView.
```csharp
public Task ScrollToAsync (double x, double y, bool animated);
public Task ScrollToAsync (Element element, bool animated);
```
The `Element` passed to `ScrollToAsync` must be a descendant of the `ScrollView` but does not have to be a direct child.

Finally for those who do not wish to use bindings to observe scrolling, there is a `Scrolled` event that fires when `ScrollX` or `ScrollY` are updated.
```csharp
public event EventHandler<ScrolledEventArgs> Scrolled;

public class ScrolledEventArgs : EventArgs
{
   public double ScrollX { get; } = 0;
   public double ScrollY { get; } = 0;
}
```
Lastly ScrollView no longer uses any internal API to communicate between the frontend and the renderer. `IScrollViewController`, which is implemented explicitly on ScrollView can be used to trigger these and other events.

### ListView ###

**Separator Enhancements**
It is now possible to enable/disable separators for the ListView. This can be configured via the `SeparatorVisibility` property, which is bindable.
```csharp
public SeparatorVisibility SeparatorVisibility { get; set; } = SeparatorVisibility.Default;

public enum SeparatorVisibility {
   Default = 0,
   None = 1,
}
```
Currently there is no option for `Always` as not all platforms have separators as part of their UX. We are considering adding this in the future, however it would be an invented paradigm for Windows platforms.

It is now possible to apply a `Color` to the separator in ListView.
```csharp
public Color SeparatorColor { get; set; } = Color.Default;
```
The default value is `Color.Default` and will function unchanged from the 1.3.0 implementation if left untouched. RGBA values are supported. This function does nothing in `SeparatorVisibility` is set to `None`. Please note that setting either of these properties on Android after loading the `ListView` incurs a large performance penalty.

**Header/Footer**
`ListView` has also grown both a Header and a Footer. These are managed through a series of properties which enable everything from simple usage to more complex MVVM style usage. With Header/Footer the primary reason developers have in the past been forced to put ListViews inside of ScrollViews is finally dead! If you are still placing a ListView inside a ScrollView we strongly suggest you consider porting.
```csharp
public object Header { get; set; } = null;
public DataTemplate HeaderTemplate { get; set; } = null;
public object Footer { get; set; } = null;
public DataTemplate FooterTemplate { get; set; } = null;
```
It is important to note that Header or Footer may be set directly to a View and the Template properties left null. This will cause the Header/Footer to be directly consumed by the renderer. All of these properties are bindable.

**Pull To Refresh**
PullToRefresh has been enabled on all current target platforms for ListView. To enable PullToRefresh in your app simple set `IsPullToRefreshEnabled` to true and make sure you respond to the correct events. It is important to note that this is the "easy" version of this API, in the future a more complete API with a standalone View may be added.
```csharp
public event EventHandler Refreshing;

public bool IsPullToRefreshEnabled { get; set; } = false;
public bool IsRefreshing { get; set; } = false;
public ICommand RefreshCommand { get; set; } = null;

public void BeginRefresh ();
public void EndRefresh ();
```
When the user triggers a `PullToRefresh` the Command will be invoked and the `Refreshed` event emitted. `IsRefreshing` will be set to true. The `ICommand.CanExecute` property is respected. The user must either call `EndRefresh` or assign `IsRefreshing` to false in order to end the refresh state.

All control parameters for these features and more are exposed through the IListViewController interface, which is explicitly implemented on ListView. This will assist those wishing to modify how these features work in custom renderers.

The Windows Phone implementation of PullToRefresh is a custom implementation as there is no platform idiom for doing this. In the future if the Windows platform decided to add a method of doing PullToRefresh by default, we intend to port.

### Forms.Application ###

The `Application` class now exposes 4 new events for dealing with Modal navigation.
```csharp
public event EventHandler<ModalPushedEventArgs> ModalPushed;
public event EventHandler<ModalPoppedEventArgs> ModalPopped;
public event EventHandler<ModalPushingEventArgs> ModalPushing;
public event EventHandler<ModalPoppingEventArgs> ModalPopping;
```
The `ModalPoppingEventArgs` contains a `Cancel` property which if set to true will cancel the Pop event and cause the application to enter the background (the operating system is informed of the unhandled back event).

In order to implement this feature, all pre-Application methods of creating a Forms app have been updated to create a default `Application` which is set as the root pages `Parent`. It is possible this may cause issues in some edge cases, if you have any issues please file a bug report. It is suggested you update your app to the new LoadApplication initialization methodology if possible.

Application now has a method of manually forcing the `Properties` dictionary to be saved to the IsolatedFileStore. This is to allow users to save their properties when it makes sense for them rather than risk them not getting serialized out due to a crash/being killed by the OS.
```csharp
public Task SavePropertiesAsync ()
```

### OpenGLRenderer ###

On Android `OpenGLRenderer` has been renamed `OpenGLViewRenderer` for consistency.

### Layout ###
Layout now contains a `ILayoutController` class which has an `IReadOnlyList<Element>` which can be used to enumerate the children of a Layout regardless of the type of the Layout.

## Other Features ##

- WebView now correctly supports javascript out of the box on Windows Phone 8.0

## Bug Fixes ##

- [Bug 27063](https://bugzilla.xamarin.com/show_bug.cgi?id=27063) - Navigation not always returning to the proper page.
- [Bug 27225](https://bugzilla.xamarin.com/show_bug.cgi?id=27225) - Secondary ToolbarItems cause app to hang during PushAsync
- [Bug 27437](https://bugzilla.xamarin.com/show_bug.cgi?id=27437) - [iOS] Context menu error after deleting an item from a ListView using ContextActions
- [Bug 27096](https://bugzilla.xamarin.com/show_bug.cgi?id=27096) - EntryCell has different fontsize on Android
- [Bug 21317](https://bugzilla.xamarin.com/show_bug.cgi?id=21317) - Stepper control .IsEnabled doesn't work on Android
- [Bug 26338](https://bugzilla.xamarin.com/show_bug.cgi?id=26338) - Unable to change page BackgroundImage from code
- [Bug 26588](https://bugzilla.xamarin.com/show_bug.cgi?id=26588) - [WinPhone] Entry does not trigger numeric keyboard when password masking is enabled


## Other Fixes ##

- Stepper default values now can be correctly inherited through a style.
- x:Static now correctly reports position on error in XAML.
- XAML now throws a more user friendly error on duplicate x:Name
- XAML will now use implicit operators when assigning values to properties
- XAML now supports baseclass indication for collection properties
- XAML string literals are now supported with `{}foo`
- iOS6 Modal pages should no longer sometimes have a 20px offset for no reason

Version History

Version Downloads Last updated
4.1.0.496342-pre2 217 6/13/2019
4.1.0.483098-pre1 327 6/5/2019
4.0.0.497661 2,487 6/13/2019
4.0.0.482894 3,140 6/3/2019
4.0.0.425677 6,800 5/14/2019
4.0.0.394984-pre10 604 5/3/2019
4.0.0.346134-pre9 751 4/18/2019
4.0.0.304370-pre8 603 4/3/2019
4.0.0.250467-pre7 508 3/20/2019
4.0.0.232914-pre6 347 3/14/2019
4.0.0.169046-pre5 751 2/21/2019
4.0.0.135214-pre4 494 2/6/2019
4.0.0.94569-pre3 517 1/24/2019
4.0.0.62955-pre2 550 1/10/2019
4.0.0.8055-pre1 1,352 12/4/2018
3.6.0.344457 17,731 4/18/2019
3.6.0.293080 9,020 4/3/2019
3.6.0.264807 6,961 3/19/2019
3.6.0.220655 11,484 3/6/2019
3.6.0.169048-pre2 241 2/21/2019
3.6.0.135200-pre1 248 2/6/2019
3.5.0.274416 838 3/26/2019
3.5.0.169047 6,558 2/20/2019
3.5.0.129452 7,737 2/6/2019
3.5.0.94564-pre3 279 1/24/2019
3.5.0.62956-pre2 331 1/10/2019
3.4.0.1039999 728 3/26/2019
3.4.0.1029999 7,208 1/24/2019
3.4.0.1009999 13,425 1/4/2019
3.4.0.1008975 34,019 11/15/2018
3.4.0.987044-pre2 541 11/8/2018
3.4.0.925479-pre1 1,173 10/18/2018
3.3.0.967583 9,604 11/1/2018
3.3.0.912540 10,204 10/18/2018
3.3.0.893527-pre3 671 10/11/2018
3.3.0.871608-pre2 851 10/1/2018
3.3.0.840541-pre1 956 9/20/2018
3.2.0.871581 16,842 10/3/2018
3.2.0.839982 15,787 9/17/2018
3.2.0.809874-pre3 835 9/10/2018
3.2.0.729530-pre2 1,280 8/14/2018
3.2.0.637442-pre1 1,946 7/17/2018
3.1.0.697729 22,935 8/1/2018
3.1.0.637273 12,336 7/11/2018
3.1.0.583944 17,681 6/20/2018
3.1.0.561732-pre4 892 6/11/2018
3.1.0.550168-pre3 788 6/6/2018
3.1.0.530888-pre2 814 6/4/2018
3.1.0.469394-pre1 1,422 5/9/2018
3.0.0.561731 6,588 6/11/2018
3.0.0.550146 3,203 6/6/2018
3.0.0.530893 2,424 6/4/2018
3.0.0.482510 12,533 5/14/2018
3.0.0.446417 5,968 5/1/2018
3.0.0.427558-pre4 1,225 4/25/2018
3.0.0.354232-pre3 1,217 4/5/2018
3.0.0.296286-pre2 1,247 3/20/2018
2.5.1.527436 8,209 5/4/2018
2.5.1.444934 14,909 4/4/2018
2.5.1.392594-pre3 725 3/21/2018
2.5.1.340284-pre2 1,006 3/9/2018
2.5.1.317207-pre1 1,010 3/1/2018
2.5.0.280555 35,368 2/16/2018
2.5.0.122203 21,878 12/18/2017
2.5.0.121934 20,859 11/28/2017
2.5.0.91635 10,289 11/16/2017
2.5.0.77107 3,347 11/13/2017
2.5.0.75255-pre3 834 11/10/2017
2.5.0.19271-pre2 1,198 10/20/2017
2.4.0.91020 5,127 11/16/2017
2.4.0.74863 4,537 11/10/2017
2.4.0.38779 9,611 10/30/2017
2.4.0.18342 6,623 10/20/2017
2.4.0.282 27,998 9/29/2017
2.4.0.280 3,670 9/27/2017
2.4.0.275-pre3 1,248 9/19/2017
2.4.0.269-pre2 2,288 8/29/2017
2.4.0.266-pre1 2,109 8/16/2017
2.3.5.256-pre6 3,223 6/29/2017
2.3.5.255-pre5 2,464 6/26/2017
2.3.5.239-pre3 3,099 5/11/2017
2.3.5.235-pre2 1,682 4/26/2017
2.3.5.233-pre1 1,252 4/13/2017
2.3.4.270 18,751 8/29/2017
2.3.4.267 10,637 8/16/2017
2.3.4.247 44,608 5/16/2017
2.3.4.231 38,073 4/12/2017
2.3.4.224 14,738 3/29/2017
2.3.4.221-pre6 2,136 3/27/2017
2.3.4.214-pre5 2,381 3/14/2017
2.3.4.212-pre4 1,061 3/10/2017
2.3.4.211-pre3 995 3/9/2017
2.3.4.192-pre2 3,372 2/3/2017
2.3.4.184-pre1 2,192 1/13/2017
2.3.3.193 27,385 2/1/2017
2.3.3.180 33,300 1/5/2017
2.3.3.175 9,706 12/6/2016
2.3.3.168 8,238 11/23/2016
2.3.3.166-pre4 1,438 11/3/2016
2.3.3.165-pre4 917 10/27/2016
2.3.3.163-pre3 1,324 10/17/2016
2.3.3.152-pre2 8,428 9/15/2016
2.3.2.127 48,219 9/14/2016
2.3.2.118-pre1 1,775 8/3/2016
2.3.1.114 17,235 8/3/2016
2.3.1.113-pre3 1,162 7/19/2016
2.3.1.111-pre2 1,136 7/4/2016
2.3.1.110-pre1 911 6/29/2016
2.3.0.107 37,657 6/29/2016
2.3.0.49 13,874 6/16/2016
2.3.0.48-pre3 941 6/16/2016
2.3.0.46-pre3 1,610 5/30/2016
2.3.0.38-pre2 1,891 4/27/2016
2.3.0.34-pre1 4,528 4/27/2016
2.2.0.45 12,094 5/30/2016
2.2.0.31 34,844 4/27/2016
2.2.0.23-pre4 1,152 4/20/2016
2.2.0.18-pre3 961 4/20/2016
2.2.0.16-pre3 1,182 4/20/2016
2.2.0.5-pre2 2,390 4/8/2016
2.2.0.4-pre1 4,440 4/5/2016
2.1.0.6529 11,495 3/13/2016
2.1.0.6526 5,418 3/9/2016
2.1.0.6524 4,144 3/2/2016
2.1.0.6521 1,415 3/1/2016
2.1.0.6517-pre5 1,143 2/18/2016
2.1.0.6513-pre4 1,117 2/9/2016
2.1.0.6508-pre3 1,279 1/28/2016
2.1.0.6503-pre2 1,849 1/22/2016
2.1.0.6501-pre1 889 1/21/2016
2.1.0.6500-pre1 1,021 1/20/2016
2.0.1.6505 18,866 1/28/2016
2.0.1.6495 5,973 1/20/2016
2.0.1.6492-pre1 1,232 12/3/2015
2.0.0.6490 10,177 12/1/2015
2.0.0.6484 2,574 11/21/2015
2.0.0.6482 3,841 11/17/2015
1.5.2.6478-pre3 861 11/17/2015
1.5.2.6477-pre2 1,270 11/10/2015
1.5.2.6469-pre1 1,207 10/20/2015
1.5.1.6471 11,431 10/20/2015
1.5.1.6468 1,367 10/20/2015
1.5.1.6460-pre2 947 10/13/2015
1.5.1.6455-pre1 2,158 10/2/2015
1.5.0.6447 9,537 9/25/2015
1.5.0.6446 4,361 9/16/2015
1.5.0.6404-pre3 1,290 8/25/2015
1.5.0.6401-pre2 1,074 8/21/2015
1.5.0.6396-pre1 1,024 8/5/2015
1.4.4.6449 1,287 9/25/2015
1.4.4.6443 1,131 9/16/2015
1.4.4.6392 10,584 7/29/2015
1.4.4.6391 1,074 7/28/2015
1.4.4.6387 1,266 7/27/2015
1.4.4.6379-pre3 1,048 7/20/2015
1.4.4.6378-pre2 977 7/16/2015
1.4.4.6377-pre1 1,039 7/14/2015
1.4.3.6376 4,480 7/9/2015
1.4.3.6374 3,319 7/1/2015
1.4.3.6372 1,119 6/30/2015
1.4.3.6364-pre3 994 6/16/2015
1.4.3.6358-pre2 1,156 4/24/2015
1.4.3.6356-pre1 1,030 4/21/2015
1.4.2.6359 10,118 4/30/2015
1.4.2.6355 2,865 4/21/2015
1.4.2.6353-pre2 1,022 3/31/2015
1.4.2.6350-pre1 912 3/30/2015
1.4.1.6349 9,523 3/30/2015
1.4.1.6347-pre2 1,207 3/19/2015
1.4.1.6342-pre1 1,126 3/10/2015
1.4.0.6341 3,551 3/9/2015
1.4.0.6340-pre2 925 3/6/2015
1.4.0.6336-pre1 961 3/3/2015
1.3.5.6337 1,453 3/5/2015
1.3.5.6335 1,390 3/2/2015
1.3.5.6333-pre1 1,011 2/17/2015
1.3.4.6332 2,100 2/17/2015
1.3.4.6331-pre4 1,034 2/13/2015
1.3.4.6329-pre3 940 2/12/2015
1.3.4.6328-pre2 911 2/11/2015
1.3.4.6325-pre1 935 2/9/2015
1.3.3.6323 1,829 2/9/2015
1.3.3.6322-pre3 985 2/6/2015
1.3.3.6321-pre2 983 2/4/2015
1.3.3.6318-pre1 940 2/2/2015
1.3.2.6316 1,632 2/3/2015
1.3.2.6313-pre3 962 1/30/2015
1.3.2.6309-pre2 983 1/28/2015
1.3.2.6299-pre1 1,076 1/20/2015
1.3.1.6296 4,932 1/4/2015
1.3.1.6294-pre1 1,105 12/24/2014
1.3.0.6292 1,842 12/24/2014
1.3.0.6286-pre4 979 12/19/2014
1.3.0.6284-pre3 1,034 12/12/2014
1.3.0.6280-pre2 995 12/9/2014
1.3.0.6275-pre1 2,597 11/12/2014
1.2.3.6257 8,267 10/2/2014
1.2.3.6256-pre4 982 9/26/2014
1.2.3.6255-pre3 1,583 9/20/2014
1.2.3.6249-pre2 1,021 9/9/2014
1.2.3.6246-pre1 1,016 8/15/2014
1.2.2.6243 3,883 7/30/2014
1.2.2.6241-pre3 930 7/28/2014
1.2.2.6240-pre2 1,298 7/22/2014
1.2.2.6238-pre1 921 7/17/2014
1.2.1.6229 2,811 7/14/2014
1.1.1.6206 6,934 6/19/2014
1.1.0.6201 1,998 6/12/2014
1.0.6197 1,385 6/4/2014
1.0.6188 3,482 5/28/2014
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