I\'ve been trying to get any given window from another Application to 开发者_如何学JAVAbecome front most and focused.
My app crashes when my ViewController gets deallocated while my CATiledLayer is retrieving the image to draw in a background thread. I get a message
I am attempting to take an image captured from the rear camera, apply a scaling transformation to it and then output a new image with the same size of the original but scaled up.
Ok this is a little tricky. I\'m detecting when an application goes into fullscreen mode (captures the display) and then i need to draw occasionally some stuff into the captured displays context for n
I have a UIView subclass that I\'m drawing a PDF onto (using a CATiledLayer).I also need to draw on a specific region of that PDF, however the coordinate plane of the CATiledLayer when using CG to dra
I\'m seeing my app being killed by iOS with an out of memory message, however, while tracing the progress of the app in the Allocations Instrument, I see lots of mallocs that seem to be occurring outs
I am using KVC to set properties of objects from a plist. I know I can save them as strings <string>{{66, 114}, 开发者_C百科{64, 64}}</string> and manually convert to structs, but how can
I have a chart drawn with CoreGraphics. This chart can be scrolled horizontally and it\'s drawn as we scroll it.
I am currently using the following code to write a CGContext to a PNG on disk: CGImageRef image = CGBitmapContextCreateImage(context);
I am currently making a basic image editor for iphone. I take the CGImageRef from a UIIma开发者_如何学运维ge and create a context for it using the following code
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