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Understanding the Rails Authenticity Token
... authenticity_token, stores this token in the session, and places it in a hidden field in the form. When the user submits the form, Rails looks for the authenticity_token, compares it to the one stored in the session, and if they match the request is allowed to continue.
Why it happens
Since the a...
HTML5 Pre-resize images before uploading
...);
var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0);
var MAX_WIDTH = 800;
var MAX_HEIGHT = 600;
var width = img.width;
var height = img.height;
if (width > height) {
if (width > MAX_WIDTH) {
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
}
} else {
if (height > ...
How can I transition height: 0; to height: auto; using CSS?
I am trying to make a <ul> slide down using CSS transitions.
51 Answers
51
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How to use JNDI DataSource provided by Tomcat in Spring?
It is said that in the Spring javadoc article about DriverManagerDataSource class, that this class is very simple and that it is recommended
...
Error inflating class fragment
...
As hdemirchian said, make sure to use:
import android.support.v4.app.Fragment;
And also make sure that the Activity that is using the fragment(s) extends FragmentActivity instead of the regular Activity,
import android.support.v4.app.Fra...
Android TextView with Clickable Links: how to capture clicks?
...d makes them clickable, and then lets you respond to the URL.
protected void makeLinkClickable(SpannableStringBuilder strBuilder, final URLSpan span)
{
int start = strBuilder.getSpanStart(span);
int end = strBuilder.getSpanEnd(span);
int flags = strBuilder.getSpanFlags(span);
Clicka...
Android file chooser [closed]
...
EDIT (02 Jan 2012):
I created a small open source Android Library Project that streamlines this process, while also providing a built-in file explorer (in case the user does not have one present). It's extremely simple to use, requiring only a few lines of code.
You can find it ...
JQuery Event for user pressing enter in a textbox?
...de == 13)
{
$(this).trigger("enterKey");
}
});
http://jsfiddle.net/x7HVQ/
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Animate the transition between fragments
... transition between fragments. I got the answer from the following
Android Fragments and animation
8 Answers
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Post data to JsonP
...ting hacks out there if you're willing to go to a lot of effort inserting hidden <iframe>s and mucking about with their properties.
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