In Xamarin Forms how to call MainActivity’s method or get MainActivity’s ‘Window’ from another class?

I want to hide software buttons when enter text to entry is done. When user put finger outside keyboard, this method is invoked: public override void OnUserInteraction() { base.OnUserInteraction(); HideSoftwareMenuBars(); } That works perfectly: private void HideSoftwareMenuBars() { try { int uiOptions = (int)Window.DecorView.SystemUiVisibility; uiOptions |= (int)SystemUiFlags.LayoutStable; uiOptions |= (int)SystemUiFlags.LayoutHideNavigation; uiOptions |= (int)SystemUiFlags.LayoutFullscreen; uiOptions |=…

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How to Change all FullCalendar ‘s events color onClick?

I want to change the color of the selected event onClick , in addition when i select another event in my calendar i want the previous event to get it’s initial color. this is what i tried : eventClick:function(info){ if($(this).css(‘background-color’)==’rgb(58, 135, 173)’){ $(this).css(‘background-color’,’red’); } else{ $(this).css(‘background-color’,’rgb(58, 135, 173)’); } } i tried to add this…

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python – How to generate all possibilities of adding + and – between numbers of a vector so the sum should be positive, using backtracking

I have to make a python application that generates all possibilities of adding + and – between numbers of a vector so the sum should be positive, using backtracking. I’m writing here because I don’t quite understand how to make that. As input, my application gets a vector of integer numbers: a1, a2, … an.…

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