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How to get current memory usage in android?
...ailableMegs = mi.availMem / 0x100000L;
//Percentage can be calculated for API 16+
double percentAvail = mi.availMem / (double)mi.totalMem * 100.0;
Explanation of the number 0x100000L
1024 bytes == 1 Kibibyte
1024 Kibibyte == 1 Mebibyte
1024 * 1024 == 1048576
1048576 == 0x...
How to add one day to a date? [duplicate]
...
All solutions support negative offsets, even with their negative counterparts, so instead of plusDays(1) one could also use minusDays(-1).
– Daniel Rikowski
May 31 '17 at 9:00
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When to use IList and when to use List
...hen to use each one. What I'm doing now is if I don't need the Sort or FindAll methods I use the interface. Am I right? Is there a better way to decide when to use the interface or the concrete type?
...
HTTPURLConnection Doesn't Follow Redirect from HTTP to HTTPS
...uppose the application is set up to perform client authentication automatically. The user expects to be surfing anonymously because he's using HTTP. But if his client follows HTTPS without asking, his identity is revealed to the server.
...
Are arrays passed by value or passed by reference in Java? [duplicate]
...a primitive type in Java, but they are not objects either ... "
In fact, all arrays in Java are objects1. Every Java array type has java.lang.Object as its supertype, and inherits the implementation of all methods in the Object API.
... so are they passed by value or by reference? Does it de...
How to add an Access-Control-Allow-Origin header
...off2)$">
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*"
</IfModule>
</FilesMatch>
also in your remote CSS file, the font-face declaration needs the full absolute URL of the font-file (not needed in local CSS files):
e.g.
@font-face {
font-fa...
How to get the last date of a particular month with JodaTime?
... @Jon Skeet How to get this using Java 8's new Date and Time API?
– Warren Nocos
Nov 9 '15 at 12:21
5
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How to check if BigDecimal variable == 0 in java?
...quals and compareTo is not as you think. docs.oracle.com/javase/1.5.0/docs/api/java/math/…
– nhahtdh
Aug 31 '12 at 1:53
2
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SparseArray vs HashMap
...pe.
There are some variants for different key/value types, even though not all of them are publicly available.
Benefits are:
Allocation-free
No boxing
Drawbacks:
Generally slower, not indicated for large collections
They won't work in a non-Android project
HashMap can be replaced by the fol...
How do you log all events fired by an element in jQuery?
I'd like to see all the events fired by an input field as a user interacts with it. This includes stuff like:
12 Answers
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