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Android. Fragment getActivity() sometimes returns null
In developer console error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
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How to obtain the query string from the current URL with JavaScript?
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Have a look at the MDN article about window.location.
The QueryString is available in window.location.search.
Solution that work in legacy browsers as well
MDN provide an example (no longer available in the above referenced article) of how to the get value of ...
Determine if running on a rooted device
My app has a certain piece of functionality that will only work on a device where root is available. Rather than having this feature fail when it is used (and then show an appropriate error message to the user), I'd prefer an ability to silently check if root is available first, and if not,hide the ...
How to remove “disabled” attribute using jQuery?
I have to disable inputs at first and then on click of a link to enable them.
10 Answers
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Row Offset in SQL Server
Is there any way in SQL Server to get the results starting at a given offset? For example, in another type of SQL database, it's possible to do:
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creating a random number using MYSQL
...LOOR(RAND() * 401) + 100
Generically, FLOOR(RAND() * (<max> - <min> + 1)) + <min> generates a number between <min> and <max> inclusive.
Update
This full statement should work:
SELECT name, address, FLOOR(RAND() * 401) + 100 AS `random_number`
FROM users
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set the width of select2 input (through Angular-ui directive)
I have problem making this plunkr (select2 + angulat-ui) work.
11 Answers
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“R cannot be resolved to a variable”? [duplicate]
In Eclipse, I've created a project from a source and now it shows errors - "R cannot be resolved to a variable". From what I found here, I had cleared and rebuilt the project, but still the R file doesn't appear in the /gen folder.
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Two inline-block, width 50% elements wrap to second line [duplicate]
...e to have two columns of 50% width space, and avoid floats.
So i thought using display:inline-block .
5 Answers
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MVC (Laravel) where to add logic
Let's say whenever I do a CRUD operation or modify a relationship in a specific way I also want to do something else. E.g., whenever someone publishes a post I also want to save something to a table for analytics. Maybe not the best example but in general there's a lot of this "grouped" functionalit...