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Integer division: How do you produce a double?
...form the math operation, you may be risking yourself. Also in some context reading the variable as an integer makes code easier to understand.
– Rudolf Real
Mar 1 '14 at 15:48
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onSaveInstanceState () and onRestoreInstanceState ()
...e that had previously been
frozen by onSaveInstanceState(Bundle).
As I read it: There is no reason to override onRestoreInstanceState() unless you are subclassing Activity and it is expected that someone will subclass your subclass.
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How to allow to accept only image files?
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you can use accept attribute for <input type="file"> read this docs http://www.w3schools.com/tags/att_input_accept.asp
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What is the use of making constructor private in a class?
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No one is going to read this, but here goes: I've been downvoted a couple of times on this one. Not upset or anything, but (for the sake of learning) I'd like to know why this is bad? How else could an iterator be constructed with the data it n...
Gradle finds wrong JAVA_HOME even though it's correctly set
...ommand could be found in your PATH"
export JAVA_HOME=$(dirname $(dirname $(readlink -f $(which javac) )))
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Is quitting an application frowned upon?
Moving on in my attempt to learn Android, I just read the following :
40 Answers
40
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Java abstract interface
...opy of the original Oak 0.2 Specification (or "manual"). Quite interesting read I must say, and only 38 pages in total! :-)
Under Section 5, Interfaces, it provides the following example:
public interface Storing {
void freezeDry(Stream s) = 0;
void reconstitute(Stream s) = 0;
}
And in t...
Check Whether a User Exists
...want is just to check if the user exists, use if with id directly, as if already checks for the exit code. There's no need to fiddle with strings, [, $? or $():
if id "$1" &>/dev/null; then
echo 'user found'
else
echo 'user not found'
fi
(no need to use -u as you're discarding the ou...
Jackson with JSON: Unrecognized field, not marked as ignorable
... using Jackson for JSON handling. I have no control over the input JSON (I read from a web service). This is my input JSON:
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How to make gradient background in android
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in the book I am reading it talks about putting them into the drawables folder. Do i need one per folder?
– JGallardo
Nov 7 '14 at 3:47
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