Congratulations! You’ve hit a leaky abstraction. :-/ The problem is this: for better or worse, virtual method calls from constructors invoke the most derived method implementation. C# is the same as Java in this respect; consider the following program: using System; class Base { public Base () { Console.WriteLine (“Base..ctor”); M (); } public virtual … Read more
You can also try this and its probably the best solution I found : if(Device.RuntimePlatform == Device.iOS) { //iOS stuff } else if(Device.RuntimePlatform == Device.Android) { }
In onCreate, put mViewModel.getLiveData().observe(this, new Observer<List<YOUR STUFF>>(){ and in the .observe put the init() method, that is what works for me
As recently as Xamarin Studio 5.6 (build 273) with Xamarin.Android 4.18.0, if you have manually deleted the Resource.designer.cs file from the project, rebuilding will regenerate Resource.designer.cs, but will not add it back into the project. So after attempting to rebuild once, the file will be present in the file system, but not in the project. … Read more
Use a ViewStub instead of include: <ViewStub android:id=”@+id/layout_stub” android:inflatedId=”@+id/message_layout” android:layout_width=”match_parent” android:layout_height=”match_parent” android:layout_weight=”0.75″ /> Then in code, get a reference to the stub, set its layout resource, and inflate it: ViewStub stub = (ViewStub) findViewById(R.id.layout_stub); stub.setLayoutResource(R.layout.whatever_layout_you_want); View inflated = stub.inflate();
I would increase your build heap size. Right click your Android Project > Properties > Android Options > Advanced > Java Max Heap Size.
I had the same exception with the following code: public class SelectWeekDayFragment extends DialogFragment { @Override public Dialog onCreateDialog(Bundle savedInstanceState) { return new AlertDialog.Builder(getActivity()) .setMessage(“Are you sure?”).setPositiveButton(“Ok”, null) .setNegativeButton(“No way”, null).create(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.week_day_dialog, container, false); return view; } } You must choose … Read more
You are calling “PushAsync”: public partial class MainPage : ContentPage { public MainPage() { InitializeComponent(); } private void btnCourseList_Clicked(object sender, EventArgs e) { Navigation.PushAsync(new PageB()); } } but you did not start the NavigationPage, which normally is done in the App.cs class, or at least it should be started before any call to “PushAsync”: MainPage … Read more
I had the same issue… and Tools -> Android -> Android SDK Manager was greyed out for me. In the end I needed to go to Tools -> Options -> Xamarin -> Android Settings and then make sure that the “Auto Install Android SDKs” was ticked. Once I ticked this and then double clicked on … Read more
You could modify it simply like this GradientDrawable bgShape = (GradientDrawable)btn.getBackground(); bgShape.setColor(Color.BLACK);