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Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...ontent_type :image, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]
-OR- another way
validates_attachment :image, content_type: { content_type: ["image/jpg", "image/jpeg", "image/png", "image/gif"] }
-OR- yet another way
is to use regex for validating content type.
...
Saving and Reading Bitmaps/Images from Internal memory in Android
...to the OutputStream
bitmapImage.compress(Bitmap.CompressFormat.PNG, 100, fos);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
...
convert UIImage to NSData
...entation (
UIImage *image,
CGFloat compressionQuality
);
UIImagePNGRepresentation
Returns the data for the specified image in PNG format
NSData * UIImagePNGRepresentation (
UIImage *image
);
Here the docs.
EDIT:
if you want to access the raw bytes that make up the UIImage, y...
UCenter实现各系统通信的原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...其它应用的api/uc.php传递数据）
可以在uc应用目录下新建一个名为test.php的文件，来模拟登录成功，请求uc_server通知其它应用。文件内容为：
< ?php
include_once "config.inc.php";
include_once "./uc_client/client.php";
echo uc_user_synlogin(1);
e...
Vertical (rotated) text in HTML table
...sponse.Write("Hello World!")
context.Response.ContentType = "image/png"
Dim strText As String = context.Request.QueryString("text")
Dim strRotate As String = context.Request.QueryString("rotate")
Dim strBGcolor As String = context.Request.QueryString("bgcolor")
...
How do I export UIImage array as a movie?
...loc] initWithObjects:
// [UIImage imageNamed:@"add_ar.png"],
// [UIImage imageNamed:@"add_ja.png"],
// [UIImage imageNamed:@"add_ru.png"],
// [UIImage imageNamed:@"add_ru.png"],
// [UIImage image...
Changing image sizes proportionally using CSS?
...w width.
Ex:
HTML:
<div class="container">
<img src="something.png" />
</div>
<div class="container">
<img src="something2.png" />
</div>
CSS:
.container {
width: 200px;
height: 120px;
}
/* resize images */
.container img {
width: 100%;
hei...
Render HTML to an image
Is there a way to render html to image like PNG? I know that it is possible with canvas but I would like to render standard html element like div for example.
...
Getting image dimensions without reading the entire file
Is there a cheap way to get the dimensions of an image (jpg, png, ...)? Preferably, I would like to achieve this using only the standard class library (because of hosting restrictions). I know that it should be relatively easy to read the image header and parse it myself, but it seems that something...
How is Pythons glob.glob ordered?
...u can sort them yourself
If you want sorted by name:
sorted(glob.glob('*.png'))
sorted by modification time:
import os
sorted(glob.glob('*.png'), key=os.path.getmtime)
sorted by size:
import os
sorted(glob.glob('*.png'), key=os.path.getsize)
etc.
...