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Generate colors between red and green for a power meter?
...give a more pleasing gradient.
Here's a demonstration of each technique - top gradient uses RGB, bottom uses HSV:
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back button callback in navigationController in iOS
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In my opinion the best solution.
- (void)didMoveToParentViewController:(UIViewController *)parent
{
if (![parent isEqual:self.parentViewController]) {
NSLog(@"Back pressed");
}
}
But it only works with iOS5+
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How to draw a circle with text in the middle?
... nudging to center the text area */
position : relative;
left : 15%;
top : 15%;
/* preserve 3d prevents blurring sometimes caused by the text centering in the next class */
transform-style : preserve-3d;
/*border : 1px solid green;*/
}
/* Circle Text - the appearance of the tex...
Can I use a min-height for table, tr or td?
...I found that setting the height of a td actually is processed as a padding top and bottom, which may introduce some layout problem as you think it's really a height space. It doesn't show as a style or as a computed style in the dev tools, but when you put your mouse over the inspected html element ...
Popstate on page's load in Chrome
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In Google Chrome in version 19 the solution from @spliter stopped working. As @johnnymire pointed out, history.state in Chrome 19 exists, but it's null.
My workaround is to add window.history.state !== null into checking if state exists in window.history:
var popped = ('state' in w...
jQuery load more data on scroll
...own the page again.
$(window).scroll(function() {
if($(window).scrollTop() == $(document).height() - $(window).height()) {
// ajax call get data from server and append to the div
}
});
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How to get current time and date in C++?
... @Johannes, just added mine. At this rate, this should be the top answer by 15 August 2017, 16:31 UTC :-)
– Martin Broadhurst
Feb 26 '16 at 23:30
62
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How to horizontally center a
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You also set the top and bottom margins to 0, which is unrelated. Better putting margin-left: auto; margin-right: auto I think.
– Emmanuel Touzery
Feb 8 '14 at 22:45
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You need to use a Theme.AppCompat theme (or descendant) with this activity
...e comments above as I had the same problem.
I had the error stated at the top of the post and happened after I added an alert dialog. I have all the relevant style information in the manifest. My problem was cured by changing a context reference in the alert builder - I changed:
new android.suppo...
Test if executable exists in Python?
... a directory with the +x bit set. I also find it useful to add this to the top of the function: import sys; if sys.platform == "win32" and not program.endswith(".exe"): program += ".exe". This way under Windows you can refer to either "calc" or "calc.exe", just like you could in a cmd window.
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