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Adding Core Data to existing iPhone project
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All the CoreData header files are imported in App_Prefix.pch, so the CoreData classes will be available throughout your Project, so you don't have to manually import the header in the files you need them.
So open up Xcode and look for some file like App_Prefix.pch, by d...
C#: why sign an assembly?
...ic version meaning that you need to use binding redirects or recompile the application if you wanted to use a different version. There's a little performance overhead as well due to the verification of the signature but it is so little that you shouldn't be concerned about.
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Integrate ZXing in Android Studio
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I was integrating ZXING into an Android application and there were no good sources for the input all over, I will give you a hint on what worked for me - because it turned out to be very easy.
There is a real handy git repository that provides the zxing android li...
How to check if activity is in foreground or in visible background?
...credits go to Dan, CommonsWare and NeTeInStEiN)
Track visibility of your application by yourself using
Activity.onPause, Activity.onResume methods. Store "visibility" status
in some other class. Good choices are your own implementation of the
Application or a Service (there are also a few va...
Best database field type for a URL
...rmance issues, and a huge VARCHAR sounds like overkill for most cases.
My approach: use a generous, but not unreasonably large VARCHAR length, such as VARCHAR(500) or so, and encourage the users who need a larger URL to use a URL shortener such as safe.mn.
The Twitter approach: For a really nice ...
ReactJS Two components communicating
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The best approach would depend on how you plan to arrange those components. A few example scenarios that come to mind right now:
<Filters /> is a child component of <List />
Both <Filters /> and <List /> are ...
Hidden Features of Java
...c name for creating an anonymous inner class, glossing over what's really happening and making it sound as if inner classes were intended to be used this way. This is a pattern I'd prefer remain hidden.
– erickson
Oct 23 '08 at 14:27
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Ask for User Permission to Receive UILocalNotifications in iOS 8
I have set up local notifications in the App Delegate Using this:
5 Answers
5
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Kill child process when parent process is killed
...'m creating new processes using System.Diagnostics.Process class from my application. I want this processes to be killed when/if my application has crashed. But if I kill my application from Task Manager, child processes are not killed. Is there any way to make child processes dependent on p...
How to programmatically take a screenshot on Android?
...s", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRoo...