Display Current Location Of Device on Map Xamarin.Forms - xamarin.ios

I want to Dispaly Current Location Of Device on Map With center of Map.How can I so this without using dependency service In Xamarin.Forms ??

You did not specify which Map component you are using, so I assume you are using Xamarin Forms Maps.
If I understand your question correctly, there is a IsShowingUser property of the Map element that should provide the functionality that you are looking for.
https://developer.xamarin.com/api/property/Xamarin.Forms.Maps.Map.IsShowingUser/

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Questions about Citymaps

1、I want to create a circle and set an image that customized to fill the circle,use this as a marker on the map, not only could change the image but also the color of circle anytime,what can I do to implements this function? Please look at the picture below!
2、Like your CityMaps app show,when I enlarge the map, some business icon that hide are show on the map,which are hide again while shrink the map, How to achieve this effect?
3、After I initialization the Object Marker and called the method marker.setFadeTime(3000),the software give my tips the method is no exist and I see the class Marker.java but really not find the method,Why is it so?
4、I want to add some stars beside the marker like this:
What can I do to add the stars?the label only can set the text beside the marker.
5、I want to load your maps at the fragment,not the activity that extends FragmentActivity,I found the SupportCitymapsMapFragment is no use,What I can do to complete this requirement?
6、In your apps,it is locate that place after input New York in the search box,What can i do to complete this function whatever i input?
7、During I develop the apps about the Citymaps,I found a serious problem so that your apps had happend too. When I run the apps, the program force flash back all of a sudden and I run your apps Citymaps at this time,the problems are same of the front,I found some error in logical view that is follows:15327-15374/com.map.maplbs A/libc﹕ Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1), thread 15374 (Thread-1819).
To solve the problem,I must restart my device. Why is it so?
I am a developer on the Citymaps SDK, I will do my best to answer your questions.
1) I recommend using the Android Canvas API to construct the images, and then use a Marker to display it on the map. See the documentation for details: http://developer.citymaps.com/markers
2) This is built into the Citymaps BusinessLayer. This functionality is not exposed through an API. If you wish to use the Citymaps BusinessLayer, you should create a CitymapsMapView or CitymapsMapFragment/SupportCitymapsMapFragment and it will automatically be added to your map.
3) At this time, there appears to be a known issue with the fadeTime API. Thank you for bringing this to our attention. We will fix it in an upcoming release. For now, you can animate the alpha property of the Marker.
4) Once again, the functionality of the BusinessLayer is not directly exposed. If you wish to create similar markers, I recommend you construct the image using Android's Canvas and then adding it as a Marker to the map.
5) If you wish to load the map inside of a fragment, you can accomplish this using child fragments (check Android documentation for more details). You can also accomplish this by instantiating CitymapsMapView or MapView directly and adding it to your view hierarchy either in XML or in code. However if you do this, remember to call the lifecycle methods on your map instance, or else the map will not behave properly.
6) If you wish to have a search in your app, it is up to you to implement this feature. We do not currently provide a search API out of the box.
7) Thank you for the bug report. We will investigate this issue and fix it in a future release.
If you have any more questions, feel free to ask, and thank you for using the Citymaps SDK.

Using UISearchBar with Xamarin iOS and MVVMCross

We have a standard SearchView - SearchViewModel binding that works in our Android and Windows Store apps.
There are various places in the app that call ShowViewModel to show the SearchViewModel. In this call we pass the Search Text.
We are now looking to reuse that same ViewModel in Xamarin.iOS.
The UISearchBar examples show the Search Bar filtering data in the current ViewModel.
I want to use it as a way of triggering a ShowViewModel, with the Search text being passed across to the SearchViewModel. That would then take the user from the current View to the Search View.
How do I trap the initiation of the Search so that I can pass the Search Text across to our SearchViewModel using ShowViewModel?

How to draw a map using mkmapview with driving directions between map annotations

I'm developing an App with some maps functionalities (among other things), I'd like to draw a map from my current location to a given destination, but I do not want to use the shareadapplication, The shared application does not have a BACK button for example and some other navigation items I already have.
I want to do it in my own viewcontroller with mkmapview on it.
I already have the code to place the pin annotations, what I need is to trace the driving directions from A to B.
The other option is to use the [[UIApplication sharedApplication] openURL:url] call to appear inside the viewcontroller window so I can keep my navigation items.
Any ideas?
thnxs
You can't do the "other option". iOS apps do not run inside windows that you can put within your app, they are full screen apps and you can make you app switch to them, but you can't make other apps switch back to yours.
So, the big question is, where are you going to get driving directions from? Check out GoogleMapsSDK, OpenStreetMap and CloudMade, because iOS maps won't give you the directions.

Create Custom view in Android

I need to create a Custom view in android which will have dynamic text like price, address etc. and also an ImageView inside it as shown in the image below. I tried to find google some tutorial for custom view but didn't find something satisfactory to do all these things. I also need to use onClick event on this view. Please guys, some code would be of great help. I'm a novice to android. I read google tutorial to create custom view but couldn't implement this.
https://lh4.ggpht.com/HmwmRTx3g9ddkHbgvZXpZOB3Am-O9OQARQ2qpxJ16zTDZbG57CmvgxUC75sGFzC3cqrH
Thanks for attention.
This is called Custom Overlay for MapView.
You can check example and implement as per your requirement - Android MapView Balloons
You can use FrameLayouts. It is very simple to use. FrameLayout can add several views on top of each other. It creates a stack of the views. Just add whatever views you want to inside FrameLayout and use the property setVisibility() to control when to show which view.

Adding item to all view menus

In Eclipse, it is possible to extend to any pop-up menu using the following special location URI:
popup:org.eclipse.ui.popup.any
Is it possible to do the same for the view menus (the little triangle in each view)? (I am developing an Eclipse RCP application, not extending the IDE. The purpose for this item is to help debugging and testing of the application.).
The short answer: no, that is not possible, unless you add the items by hand for all views.
The slightly longer answer: yes, if you
manually go through the view registry
create a new AbstractContributionFactory with the location URI "menu:<view-id>" and whatever createContributionItems(...) you want for each. (Alternatively you can create AbstractMenuAdditionCacheEntry or even better MenuAdditionCacheEntry - though these are internal and requires a little extra work... The last allows you to have a centrally defined menus extension point that is used for all these additions.)
add these to the workbench using IMenuService.addContributionFactory(AbstractContributionFactory factory) (use IWorkbenchWindow.getService(IMenuService.class) to acquire the menu service).
I haven't tested the above recipe, but I have used something very similar in an application...

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