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When is SQLiteOpenHelper onCreate() / onUpgrade() run?
... code (onCreate()), you should make sure the database is updated. Two main approaches:
Delete the old database file so that onCreate() is run again. This is often preferred at development time where you have control over the installed versions and data loss is not an issue. Some ways to delete the...
Use C++ with Cocoa Instead of Objective-C?
I would like to write applications that use C++ and the Cocoa frameworks because Apple is not making Carbon 64-bit capable. C++ seems to be pretty vanilla in its implementation on Linux and Windows but on Mac OS X it seems like additional Apple specific pieces of code are required (like an Obj-C wra...
Building and running app via Gradle and Android Studio is slower than via Eclipse
...en I press Run in Android Studio, I have to wait every time to rebuild the app, which is extremely slow.
27 Answers
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How to handle a lost KeyStore password in Android?
...do anymore (I can't or won't give any excuses for it). I want to update my app because I just fixed a bug but it's not possible anymore. What happens if I use the same Keystore but create a new key? Would I still be able to update the app and if it's not possible, how can I go about giving informati...
How to center a WPF app on screen?
I want to center my WPF app on startup on the primary screen. I know I have to set myWindow.Left and myWindow.Top, but where do I get the values?
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How do you execute an arbitrary native command from a string?
...ins! The magical extra "&" has solved my issue! As a result, I'm both happy and flustered.
– Johnny Kauffman
Jun 14 '11 at 13:55
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show ...
Image, saved to sdcard, doesn't appear in Android's Gallery app
I save an image to the sdcard and it doesn't appear in the Gallery application until I pull off the sdcard and return it back.
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onTouchListener warning: onTouch should call View#performClick when a click is detected
...ew.
Example :
The Custom View Class:
public class UselessButton extends AppCompatButton {
public UselessButton(Context context) {
super(context);
}
public UselessButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public UselessButton(Conte...
How to Empty Caches and Clean All Targets Xcode 4 and later
...r completeness, you can delete the contents of /var/folders; some caching happens there too.
WARNING: Deleting /var/folders can cause issues, and you may need to repair or reinstall your operating system after doing so.
EDIT: I have just learned that if you are afraid to grapple with /var/folders/...
Percentage width in a RelativeLayout
I am working on a form layout for a Login Activity in my Android App. The image below is how I want it to look like:
14 A...