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“android.view.WindowManager$BadTokenException: Unable to add window” on buider.show()
From my main activity , I need to call an inner class and in a method within the class, I need to show AlertDialog . After dismissing it, when the OK button is pressed, forward to Google Play for purchase.
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Are there any SHA-256 javascript implementations that are generally considered trustworthy?
I am writing a login for a forum, and need to hash the password client side in javascript before sending it on to the server. I'm having trouble figuring out which SHA-256 implementation I can actually trust. I was expecting there to be some kind of authoritative script that everyone used, but I'm f...
How to use java.net.URLConnection to fire and handle HTTP requests?
... about pretty often here, and the Oracle tutorial is too concise about it.
11 Answers
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How to un-submodule a Git submodule?
What are the best practices for un-submoduling a Git submodule, bringing all the code back into the core repository?
12 Ans...
Is embedding background image data into CSS as Base64 good or bad practice?
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It's not a good idea when you want your images and style information to be cached separately. Also if you encode a large image or a significant number of images in to your css file it will take the browser longer to download...
What is a covariant return type?
... to be a subtype of the overridden method's return type.
To clarify this with an example, a common case is Object.clone() - which is declared to return a type of Object. You could override this in your own class as follows:
public class MyFoo
{
...
// Note covariant return here, method do...
'UserControl' constructor with parameters in C#
Call me crazy, but I'm the type of guy that likes constructors with parameters (if needed), as opposed to a constructor with no parameters followed by setting properties. My thought process: if the properties are required to actually construct the object, they should go in the constructor. I get two...
How do I use method overloading in Python?
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It's method overloading not method overriding. And in Python, you do it all in one function:
class A:
def stackoverflow(self, i='some_default_value'):
print 'only method'
ob=A()
ob.stackoverflow(2)
ob.stack...
How do I detect that an iOS app is running on a jailbroken phone?
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It depends what you mean by jailbreak. In the simple case, you should be able to see if Cydia is installed and go by that - something like
NSString *filePath = @"/Applications/Cydia.app";
if ([[NSFileManager defaultManager]...
Compiled vs. Interpreted Languages
...is expressed in the instructions of the target machine. For example, an addition "+" operation in your source code could be translated directly to the "ADD" instruction in machine code.
An interpreted language is one where the instructions are not directly executed by the target machine, but instea...