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How to catch an Exception from a thread
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Use a Thread.UncaughtExceptionHandler.
Thread.UncaughtExceptionHandler h = new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread th, Throwable ex) {
System.out.println("Uncaught exception: " + ex);
}
};
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How to convert String object to Boolean Object?
...: this does not create new instances of Boolean, so performance is better (and less garbage-collection). It reuses the two instances of either Boolean.TRUE or Boolean.FALSE.
boolean: no instance is needed, you use the primitive type.
The official documentation is in the Javadoc.
UPDATED:
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Variable's scope in a switch case [duplicate]
I think I don't understand how the scope works in a switch case.
7 Answers
7
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Develop Android app using C#
Is it possible to write an android app using C#? Is there an API or something? Is it free for personal and commercial development?
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How can I extract all values from a dictionary in Python?
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If you only need the dictionary keys 1, 2, and 3 use: your_dict.keys().
If you only need the dictionary values -0.3246, -0.9185, and -3985 use: your_dict.values().
If you want both keys and values use: your_dict.items() which returns a list of tuples [(key1, value1)...
How do I change the android actionbar title and icon
I'm trying to do some things on the ActionBar in Android.
17 Answers
17
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Check if a path represents a file or a folder
...presents a path for file or a directory. What are valid directory names in Android? As it comes out, folder names can contain '.' chars, so how does system understand whether there's a file or a folder?
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Optimising Android application before release [closed]
... I'm at a phase where I need to improve the performance of the application and reduce battery consumption .
14 Answers
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Using LINQ to concatenate strings
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This answer shows usage of LINQ (Aggregate) as requested in the question and is not intended for everyday use. Because this does not use a StringBuilder it will have horrible performance for very long sequences. For regular code use String.Join as shown in the other answer
Use aggregate queries l...
Hide div after a few seconds
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and you have beaten crazy Joel Coehoorn very nicely in one shot! :)
– cregox
Mar 18 '11 at 19:14
3
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