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setResult does not work when BACK button pressed

... You need to overide the onBackPressed() method and set the result before the call to superclass, i.e @Override public void onBackPressed() { Bundle bundle = new Bundle(); bundle.putString(FIELD_A, mA.getText().toString()); Intent mIntent = new Inte...
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When do you use map vs flatMap in RxJava?

...rThrowable.addValueAsLastCause(e, file); } } }); the exact same version with flatmap : Observable.from(jsonFile).flatMap(new Func1<File, Observable<String>>() { @Override public Observable<String> call(File file) { try { return Observable.jus...
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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file

...k that the directory the keytool executable is in is on your %PATH% environment variable. For example, on my Windows 7 machine, it is in C:\Program Files (x86)\Java\jre6\bin, and my %PATH% variable looks like C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\Java\jre6...
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Listview Scroll to the end of the list after updating the list

...updated the listview by using listAdapter, so that it displays the last element entered in the list. How can I do this ? 9...
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How to extract the hostname portion of a URL in JavaScript

... you'll get sub.domain.com:8080 or sub.domain.com:80 window.location.hostname : you'll get sub.domain.com window.location.protocol : you'll get http: window.location.port : you'll get 8080 or 80 window.location.pathname : you'll get /virtualPath window.location.origin : you'll get http://sub.domain....
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Measuring function execution time in R

Is there a standardized way in R of measuring execution time of function? 10 Answers 1...
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How to change JFrame icon [duplicate]

I have a JFrame that displays a Java icon on the title bar (left corner). I want to change that icon to my custom icon. How should I do it? ...
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How to center a (background) image within a div?

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Conversion of System.Array to List

Last night I had dream that the following was impossible. But in the same dream, someone from SO told me otherwise. Hence I would like to know if it it possible to convert System.Array to List ...
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Convert javascript array to string

...t;/script> (output will appear in the dev console) As Felix mentioned, each() is just iterating the array, nothing more. share | improve this answer | follow ...