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Why doesn't “System.out.println” work in Android?
I want to print something in console, so that I can debug it. But for some reason, nothing prints in my Android application.
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Android: Go back to previous activity
...eep track of the activity stack. Whenever you start a new activity with an intent you can specify an intent flag like FLAG_ACTIVITY_REORDER_TO_FRONT or FLAG_ACTIVITY_PREVIOUS_IS_TOP. You can use this to shuffle between the activities in your application. Haven't used them much though. Have a look at...
JavaScript hashmap equivalent
...doo.
When using objects as maps, you have to remember that the key will be converted to a string value via toString(), which results in mapping 5 and '5' to the same value and all objects which don't overwrite the toString() method to the value indexed by '[object Object]'. You might also involuntar...
Type.GetType(“namespace.a.b.ClassName”) returns null
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Perhaps you could like typeof(SomeTypeInThatAssembly).Assembly.GetTypes().Where((t) => t.FullName == youFullName); may save some hassle, eventually
– Felype
Oct 20 '16 at 14:34
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Format Float to n decimal places
...at f = 12.345f;
DecimalFormat df = new DecimalFormat("#.00");
System.out.println(df.format(f));
The output of the print statement will be 12.35. Notice that it will round it for you.
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Modulo operator with negative values [duplicate]
.... If the second operand of / or % is zero the behavior is
undefined. For integral operands the / operator yields the algebraic quotient with any fractional part discarded; if the quotient a/b is
representable in the type of the result, (a/b)*b + a%b is equal to a.
The rest is basic math:
(-7/...
“Single-page” JS websites and SEO
...ttps://stackoverflow.com/a/13813102/1595913).
(test the link's validity by converting the link to your url scheme and testing against existence of content by querying a static or a dynamic source. if it's not valid send a 404 response.)
When the request is not from a google bot, you just process no...
Is there any performance reason to declare method parameters final in Java?
...ot impact the runtime performance. It's only use is to clarify the coders intent that the variable not be changed (which many consider dubious reason for its usage), and dealing with anonymous inner classes.
There is a lot of argument over whether the final modifier on the method itself has any pe...
StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First
...then did they even create MaxLength?
– Matt Johnson-Pint
Dec 1 '11 at 0:45
4
@MattJohnson - I see...
What is the equivalent to a JavaScript setInterval/setTimeout in Android/Java?
Can anyone tell me if an equivalent for setInterval/setTimeout exists for Android? Does anybody have any example about how to do it?
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