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Difference between SurfaceView and View?
... VSYNC is to consider it is as a timer that fire up every 16ms for a 60fps screen. In Android, all the normal view update (and display actually but I won't talk it today), is synchronized with VSYNC to achieve better smoothness. Now,back to the surfaceView, you can render it anytime as you wish. How...
How to programmatically get iOS status bar height
...work connection) at the top of the iPhone/iPad is 20 pixels for non-retina screens and 40 pixels for retina screens, but to future proof my app I would like to be able to determine this without hard coding values. Is it possible to figure out the height of the status bar programmatically?
...
Defeating a Poker Bot
... is a bot, change all their
playing card positions off a few
pixels on the screen, make them
different colours/designs/patterns
for 1/100 hands and see if it throws
them. If it can't screen grab it
will time-out on all its decisions
and that's pretty conclusive bot
evidence.
Timing tells, if a comp...
Formula px to dp, dp to px android
...owever, the docs explain that this value is a rounded value, used with the screen 'buckets'. Eg. on my Nexus 10 it returns 2, where the real value would be 298dpi (real) / 160dpi (default) = 1.8625.
Depending on your requirements, you might need the exact transformation, which can be achieved like...
How to debug a GLSL shader?
...ead of trying to output text, output something visually distinctive to the screen. For example you can paint something a specific color only if you reach the point of your code where you want add a printf. If you need to printf a value you can set the color according to that value.
...
What is the purpose of the “role” attribute in HTML?
... recommended technique. Use progressive enhancement when possible. -->
Screen readers users will hear this as a button (as opposed to a link), and you can use a CSS attribute selector to avoid class-itis and div-itis.
[role="button"] {
/* style these as buttons w/o relying on a .button class *...
How to align input forms in HTML
...
@MuhammadUmer Because tables will confuse screen readers and many assistive devices, whereas CSS tables separate presentation and content. Thus your form remains easily parsable by a screen reader or reading assistant, and yet displays nicely.
–...
How to delete and replace last line in the terminal using bash?
...psed seconds in bash. For this, I need to erase the last line shown on the screen (command "clear" erases all the screen, but I need to erase only the line of the progress bar and replace it with the new information).
...
Looking to understand the iOS UIViewController lifecycle
... views, this will be called every time your view is about to appear on the screen.
ViewDidAppear - Called after the view appears - great place to start an animations or the loading of external data from an API.
ViewWillDisappear/DidDisappear - Same idea as ViewWillAppear/ViewDidAppear.
ViewDidUnload...
How to scale an Image in ImageView to keep the aspect ratio
...
See also how-to-scale-bitmap-to-screen-size
– ThomasRS
Jan 11 '12 at 16:40
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