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Difference between onStart() and onResume()

...eaning of onStart() transition state. The onResume() method is always called after onStart() . Why can't it be the onResume() is invoked after onRestart() and onCreate() methods just excluding onStart() ? What is its purpose? ...
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getting the screen density programmatically in android?

...ources().getDisplayMetrics(); Though Android doesn't use a direct pixel mapping, it uses a handful of quantized Density Independent Pixel values then scales to the actual screen size. So the metrics.densityDpi property will be one of the DENSITY_xxx constants (120, 160, 213, 240, 320, 480 or 640 d...
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kill -3 to get java thread dump

... It's worth noting that jstack requires the JDK. If you're running apps on a server that only has the JRE installed, you'll need to find another means for thread dumping. – jeffkempf Nov 27 '17 at 15:30 ...
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Django - Circular model import issue

I'm really not getting this, so if someone could explain how this works I'd very much appreciate it. I have two applications, Accounts and Theme... here is my settings list: ...
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How do I discover memory usage of my application in Android?

How can I find the memory used on my Android application, programmatically? 9 Answers ...
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Repeat a task with a time delay?

.... } finally { // 100% guarantee that this always happens, even if // your update method throws an exception mHandler.postDelayed(mStatusChecker, mInterval); } } }; void startRepeatingTask() { mStatusChecker.run(); } void sto...
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What is Node.js' Connect, Express and “middleware”?

...t offers a createServer method that extends Connect's Server prototype. So all of the functionality of Connect is there, plus view rendering and a handy DSL for describing routes. Ruby's Sinatra is a good analogy. Then there are other frameworks that go even further and extend Express! Zappa, for in...
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Error: Argument is not a function, got undefined

... All I had to do to get it working was the second suggestion (i.e. set ng-app="myApp"). If I removed the [], I got another error. – Jason Jul 8 '13 at 7:38 ...
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Placement of the ng-app directive (html vs body)

...nce where you put ng-app. If you put it on <body> then you have a smaller scope for AngularJS which is slightly faster. But I have used ng-app on the <html> for manipulating the <title>. share | ...
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How to set different label for launcher rather than activity title?

This question has been asked before - but with no satisfying answer at all! So I'm trying it again. 8 Answers ...