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Android: how do I check if activity is running?

...per.onStop(); active = false; } } The only gotcha is that if you use it in two activities that link to each other then onStop on the first is sometimes called after onStart in second. So both might be true briefly. Depending on what you are trying to do (update the current activity...
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UIButton: set image for selected-highlighted state

... @stephen: Setting the "Background"(image) property of UIButton for different conditions of "StateConfig"(Default/Highlighted/Selected/Disabled) Property works for me. – Ajeet Dec 10 '12 at 16:58 ...
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Set android shape color programmatically

...e background = imageView.getBackground(); Check against usual suspects: if (background instanceof ShapeDrawable) { // cast to 'ShapeDrawable' ShapeDrawable shapeDrawable = (ShapeDrawable) background; shapeDrawable.getPaint().setColor(ContextCompat.getColor(mContext,R.color.colorToSet)...
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Regex to match only letters

...e letters only (^ and $ mark the begin and end of a string respectively). If you want to match other letters than A–Z, you can either add them to the character set: [a-zA-ZäöüßÄÖÜ]. Or you use predefined character classes like the Unicode character property class \p{L} that describes the U...
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SQL update query using joins

... 34 To make it clear... The UPDATE clause can refer to an table alias specified in the FROM clause. So im in this case is valid Generic example UPDATE A SET foo = B.bar FROM TableA A JOIN TableB B ON A.col1 = B.colx WHERE ... ...
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WebAPI Delete not working - 405 Method Not Allowed

... I found the solution eventually! If you come across the same issue, add the following to your web.config <system.webServer> <validation validateIntegratedModeConfiguration="false"/> <modules runAllManagedModulesForAllRequests="true"&g...
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Checking if object is empty, works with ng-show but not from controller?

...way, ng-show should keep working, and in your controller you can just do: if ($scope.items) { // items have value } else { // items is still null } And in your $http callbacks, you do the following: $http.get(..., function(data) { $scope.items = { data: data, // other...
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Responsive css background images

...mages and then using css screen size to change the images but I wanna know if there is a more practical way in order to achieve this. ...
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Why does cURL return error “(23) Failed writing body”?

...ill reappear.You could use -s to silence all error messages (and progress) if you don't need them. – Kaworu Jun 13 '16 at 10:37 9 ...
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Using link_to with embedded HTML

... If you want a link in rails that uses that same icon class from twitter bootstrap all you need to do is something like this. <%= link_to "Do it@", user_path(@user), :class => "btn icon-ok icon-white" %> ...