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Image, saved to sdcard, doesn't appear in Android's Gallery app
... the sdcard and it doesn't appear in the Gallery application until I pull off the sdcard and return it back.
17 Answers
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How can I plot with 2 different y-axes?
I would like superimpose two scatter plots in R so that each set of points has its own (different) y-axis (i.e., in positions 2 and 4 on the figure) but the points appear superimposed on the same figure.
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Get current folder path
...ironment.CurrentDirectory can be changed in a number of ways... (shotrtcut settings, etc)
– Yousha Aleayoub
Nov 16 '19 at 16:21
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Cast Int to enum in Java
... seems to be the only answer that works if you want a sparse (or repeated) set of integer values rather than using the default ordinals from 0..(count-1). That can be important if you're interacting with existing code, such as over a network.
– benkc
Apr 22 '1...
Why are only final variables accessible in anonymous class?
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As noted in comments, some of this becomes irrelevant in Java 8, where final can be implicit. Only an effectively final variable can be used in an anonymous inner class or lambda expression though.
It's basically due to the way Java manages closures....
Iterate through pairs of items in a Python list [duplicate]
Is it possible to iterate a list in the following way in Python (treat this code as pseudocode)?
5 Answers
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Get keys from HashMap in Java
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A HashMap contains more than one key. You can use keySet() to get the set of all keys.
team1.put("foo", 1);
team1.put("bar", 2);
will store 1 with key "foo" and 2 with key "bar". To iterate over all the keys:
for ( String key : team1.keySet() ) {
System.out.println( key...
Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
...it to a Integer (capital I) the compiler emits:
Integer b2 =Integer.valueOf(127)
This line of code is also generated when you use autoboxing.
valueOf is implemented such that certain numbers are "pooled", and it returns the same instance for values smaller than 128.
From the java 1.6 source cod...
Get users by name property using Firebase
I'm trying to create an application where I can get/set data in specific users accounts and I was tempted by Firebase.
8 An...
Instance variable: self vs @
...lf and @, so I should always use self.var_name in my methods (that doesn't setter and getter) to make my data using public interface, I spent time defining it in getter and setter, right ?
– sarunw
Nov 7 '09 at 15:35
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