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Getting the current Fragment instance in the viewpager
...3 tabs on ViewPager . I have a menu option. As shown in the onOptionsItemSelected() , by selecting an option, I need to update the fragment that is currently visible. To update that I have to call a method which is in the fragment class. Can someone please suggest how to call that method?
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Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
...g.ARGB_8888;
Bitmap bitmap = BitmapFactory.decodeFile(photoPath, options);
selected_photo.setImageBitmap(bitmap);
or
http://mihaifonoage.blogspot.com/2009/09/displaying-images-from-sd-card-in.html
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JavaScript before leaving the page
...er if they want to leave the page or not, you cannot redirect them if they select to stay on the page. If they select to leave, the browser will go where they told it to go.
You can use onunload to do stuff before the page is unloaded, but you cannot redirect from there (Chrome 14+ blocks alerts ...
Having both a Created and Last Updated timestamp columns in MySQL 4.0
...dated) values(null, null);
Query OK, 1 row affected (0.06 sec)
mysql> select * from test_table;
+----+---------------------+---------------------+
| id | stamp_created | stamp_updated |
+----+---------------------+---------------------+
| 2 | 2009-04-30 09:44:35 | 2009-04-30 09:4...
How to choose the id generation strategy when using JPA and Hibernate
...d
uses a database-generated GUID string on MS SQL Server and MySQL.
native
selects identity, sequence or hilo depending upon the capabilities of the underlying database.
assigned
lets the application assign an identifier to the object before save() is called. This is the default strategy if no elem...
jQuery AJAX file upload PHP
...t type="file" onchange="saveFile(this)" >
<br><br>
Before selecting the file Open chrome console > network tab to see the request details.
<br><br>
<small>Because in this example we send request to https://stacksnippets.net/upload/image the response code will ...
Get the current displaying UIViewController on the screen in AppDelegate.m
...return [UIWindow getVisibleViewControllerFrom:[((UITabBarController *) vc) selectedViewController]];
} else {
if (vc.presentedViewController) {
return [UIWindow getVisibleViewControllerFrom:vc.presentedViewController];
} else {
return vc;
}
}
}...
Is there a ternary conditional operator in T-SQL?
...
Use case:
select *
from table
where isExternal = case @type when 2 then 1 else 0 end
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XDocument or XmlDocument
...er>
XElement customersElement = new XElement("customers",
customers.Select(c => new XElement("customer",
new XAttribute("name", c.Name),
new XAttribute("lastSeen", c.LastOrder)
new XElement("address",
new XAttribute("town", c.Town),
new XAttr...
How to Correctly Use Lists in R?
...dresses the question of the difference between [] and [[]].
In short [[]] selects a single item from a list and [] returns a list of the selected items. In your example, x = list(1, 2, 3, 4)' item 1 is a single integer but x[[1]] returns a single 1 and x[1] returns a list with only one value.
>...