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Objective-C ARC: strong vs retain and weak vs assign
...ables and local variables are strong pointers.
We generally use strong for UIViewControllers (UI item's parents)
strong is used with ARC and it basically helps you , by not having to worry about the retain count of an object. ARC automatically releases it for you when you are done with it.Using t...
iOS app error - Can't add self as subview
...h to turn animation back ON, then the correct strategy is to implement the UINavigationControllerDelegate protocol.
This includes the following method, which is called after the animation is complete:
navigationController:didShowViewController:animated:
Basically you want to move some code as nee...
Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
...
Try this:
if (Build.VERSION.SDK_INT <19){
Intent intent = new Intent();
intent.setType("image/jpeg");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, getResources().getStr...
How to check if an object is a certain type
....DataSource = cmd.ExecuteReader
If Obj.GetType() Is GetType(System.Web.UI.WebControls.DropDownList) Then
End If
Obj.DataBind()
End Sub
You can also use the TypeOf operator instead of the GetType method. Note that this tests if your object is compatible with the given type, not that i...
What is the benefit of using Fragments in Android, rather than Views?
...ore light weight and simpler to implement.
At first, I actually tried to build a phone/tablet app using custom views. Everything appeared to work across phones AND tablets, even switching from single panel to split panel. Where I ran into trouble was with the back button and life cycle. Since I ...
Using Custom Domains With IIS Express
... as non-admin, IIS Express seems to ignore the 2nd binding - if I open its UI from the notification icon, IIS shows my site as running, but only shows the first binding, and I can only use localhost... If I'm running as admin, it shows both bindings in the UI, and both work.) I've added the urlacls ...
Accessing MVC's model property from Javascript
...ke int, string, DateTime (ex: Model.Name)
Object assignment - Custom or inbuilt classes (ex: Model, Model.UserSettingsObj)
Lets look into the details of these two assignments.
For the rest of the answer lets consider the below AppUser Model as an example.
public class AppUser
{
public strin...
How do you use the “WITH” clause in MySQL?
... the columns in any way:
SELECT *
FROM ARTICLE t
JOIN USERINFO ui ON ui.user_userid = t.article_ownerid
JOIN CATEGORY c ON c.catid = t.article_categoryid
WHERE t.published_ind = 0
ORDER BY t.article_date DESC
LIMIT 1, 3
Here's a better example:
SELECT t.name,
t.num
...
Detecting a mobile browser
...|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|o...
App restarts rather than resumes
...k at activity B. See the following definition of expected behavior in the guide to Tasks and Back Stack, at the bottom of the page under 'Starting a Task':
An intent filter of this kind causes an icon and label for the activity to be displayed in the application launcher, giving users a way to l...