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Fast and Lean PDF Viewer for iPhone / iPad / iOS - tips and hints?

... I have build such kind of application using approximatively the same approach except : I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead draw t...
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How to create a HTTP server in Android? [closed]

...thod. You also need to stop and resume this thread as needed. The simplest approach seems to kill the waiting thread by closing the ServerSocket. If you only need a server while your activity is on the top, starting and stopping ServerSocket thread can be rather elegantly tied to the activity life c...
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How do I save a UIImage to a file?

... Of course you can create subfolders in the documents folder of your app. You use NSFileManager to do that. You use UIImagePNGRepresentation to convert your image to NSData and save that to disk. // Create path. NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUser...
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How to dismiss keyboard iOS programmatically when pressing return

... simply use this in swift to dismiss keyboard: UIApplication.sharedApplication().sendAction("resignFirstResponder", to:nil, from:nil, forEvent:nil) Swift 3 UIApplication.shared.sendAction(#selector(UIResponder.resign‌​FirstResponder), to: nil, from: nil, for: nil) ...
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AsyncTask threads never die

...dition to CommonsWare's response: Currently I'm using Android 2.2, and my application uses no more than one AsyncTask at any time, but I'm creating a new one every x minutes. At first new AsyncTask Threads start to appear (a new Thread for a new AsyncTask) but after 5 threads (as mentioned by Commo...
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Calling pylab.savefig without display in ipython

...the situation that an intermediate file for external processing by another app is desired. 2 Answers ...
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Django DB Settings 'Improperly Configured' Error

... Apps aren't loaded yet. – Daniil Mashkin May 31 '18 at 12:53 add a comment  |  ...
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Showing line numbers in IPython/Jupyter Notebooks

...'base/js/events' ], function(IPython, events) { events.on("app_initialized.NotebookApp", function () { IPython.Cell.options_default.cm_config.lineNumbers = true; } ); } ); ...
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java.lang.UnsupportedClassVersionError Unsupported major.minor version 51.0 [duplicate]

I am trying to build an application, but it gives some error. My JDK version is given below: 7 Answers ...
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Find a private field with Reflection?

...you need to be aware of when reflecting on private members is that if your application is running in medium trust (as, for instance, when you are running on a shared hosting environment), it won't find them -- the BindingFlags.NonPublic option will simply be ignored. ...