I am trying to save an image from the photo gallery to local storage so that I can load the image up across application sessions. Once the user is done selecting the image, the following logic is executed. On the simulator I see the error message is written out to the log. Even though I am seeing the error message I think the image is still saved in the simulato because when I restart the application I am able to load the saved image. When I run this on the device though, I still get the error message you see in the code below and the default background is loaded which indicates the write was not successful.
Can anyone see what I am doing wrong and why the image won't save successfully?
var image = i.media.imageAsResized(width, height);
backgroundImage.image = image;
function SaveBackgroundImage(image)
{
var file = Ti.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory,W.CUSTOM_BACKGROUND);
if(file.write(image, false))
{
W.analytics.remoteLog('Success Saving Background Image');
}
else
{
W.analytics.remoteLog('Error Saving Background Image');
}
file = null;
}
Try this Code:
var parent = Titanium.Filesystem.getApplicationDataDirectory();
var f = Titanium.Filesystem.getFile(parent, 'image_name.png');
f.write(image);
Ti.API.info(f.nativePath); // it will return the native path of image
In your code i thing you are not giving the type of the image (png/jpeg) thats why your getting error.
Related
Does someone knows a way to create full page screenshots using WebDriver?
I want if one of my tests fails to create a FULL PAGE (even the not visible part on the screen) screenshot before the browser close and save it on share location.
Also, if it is possible I want to output the result to Jenkins Console log.
Thanks!
You can use the following extension for Firefox: https://addons.mozilla.org/nl/firefox/addon/fireshot/
You can find its javascript code in %APPDATA%\Mozilla\Firefox\Profiles\
The extensions provide the ability to copy the screenshot to the clipboard.
You can use its JS methods to perform the screenshot. After that, you can retrieve the image from the clipboard and save it to as a file on shared location.
Image image = default(Image);
if (Clipboard.GetDataObject() != null)
{
IDataObject data = Clipboard.GetDataObject();
if (data.GetDataPresent(DataFormats.Bitmap))
{
Image image = (Image)data.GetData(DataFormats.Bitmap,true);
image.Save("image.jpg",System.Drawing.Imaging.ImageFormat.Jpeg);
}
else
{
Console.WriteLine("The Data In Clipboard is not as image format");
}
}
else
{
Console.WriteLine("The Clipboard was empty");
}
string newImageName = string.Concat(#"C:\SampleSharedFolder\", Guid.NewGuid());
image.Save(newImageName );
Console.WriteLine("Image save location: {0}", newImageName);
Once you have populated the result to Console it is really easy to output it back to Jenkins. You can find more in my article: http://automatetheplanet.com/output-mstest-tests-logs-jenkins-console-log/
You can use Snagit to perform full page screenshots. More information here: https://www.techsmith.com/tutorial-snagit-documentation.html
First you need to start the Snagit server and then follow the documentation.
My app has a bunch of images stored as blobs in the local SQLite Database. These images are taken with the device camera. I'm using Titanium Alloy, so the image was saved using the .save() method an Alloy Model.
I've started using the TiSocial module that can post an image to Twitter or Facebook. One its parameters is image and it has to be:
a local/remote path to an image you want to share
The image I want to use is set as the image property on an ImageView. The ImageView image is set like this: $.theImageView.image = args.the_image;, where args.image is the image blob, taken from the database collection.
I tried to take this image blob and set it as the image on the TiSocial module initialisation method:
Social.activityView({
text: "Hello world! Take a look at this: " + args.name,
image: args.the_image,
removeIcons:"airdrop,print,copy,contact,camera"
});
Alternatively I tried to take use the image saved on the ImageView, like this:
Social.activityView({
text: "Hello world! Take a look at this: " + args.name,
image: $.theImageView.image,
removeIcons:"airdrop,print,copy,contact,camera"
});
However neither of these worked, and no image appears in the Tweet or Facebook message dialogs. And no error appears in the console.
On the other hand, if I set the image property to an image saved in the assets folder, then it works just fine. For example:
`image: "an_image.jpg"`
I tried a solution mentioned in the comments below, which was to save the image to Ti.FileSystem, and then read the image from there. However, this still did not work.
You could try sharing remote images this way...
var largeImg = Ti.UI.createImageView({
width : Ti.UI.SIZE,
height : 'auto',
image :'http://www.google.com/doodle4google/images/splashes/featured.png'
});
var imageGoogle =largeImg.toBlob();
// share image
Social.activityView({
status : "Hello world! Take a look at this: ",
image : imageGoogle,
removeIcons:"airdrop,print,copy,contact,camera"
});
then i would suggest to add one field called img_path in your database table because you can not get path from blob so when you store any blob to alloy model then also add its path to that model so you can retrieve it later and can share.
Hope you understand.
I had some luck by saving the file to the Ti.Filesystem, and then later retrieving it and using the .getNativePath() method:
function getImage() {
var f = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, args.alloy_id + '.jpg');
return f.read();
}
var theImage = getImage();
Social.activityView({
text: "Just tried this beer called " + args.name,
image: theImage.getNativePath(),
removeIcons:"airdrop,print,copy,contact,camera"
});
I am trying to change the Background of a button to an image source. I want to load that image in memory when we navigate to the page so that it doesn't flicker the first time it shows.
On Windows Phone, I was able to create the image source as such:
StreamResourceInfo resourceInfo = Application.GetResourceStream(uri);
BitmapImage bitmapSource = new BitmapImage();
// Avoid flicker by not delay-loading.
bitmapSource.CreateOptions = BitmapCreateOptions.None;
bitmapSource.SetSource(resourceInfo.Stream);
imageSource = bitmapSource;
I tried something similar in my Windows 8 Store app:
BitmapImage bitmapSource = new BitmapImage();
bitmapSource.CreateOptions = BitmapCreateOptions.None;
bitmapSource.UriSource = uri;
imageSource = bitmapSource;
but the same problem occurs. The button already has a different image as the Background, and on a certain event I would like it to change to the new background. But when I change the source, a noticeable flicker is observed. I'm assuming this is because the image is not yet in memory, as the issue goes away the second time the image source is modified.
Anyone know a solution? I need to somehow force the loading of this image.
Thanks!
If you use the SetSourceAsync method on the BitmapImage and await it before you attach it to the image source you should not see the flicker:-
// Ensure the stream is disposed once the image is loaded
using (IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
// Set the image source to the selected bitmap
BitmapImage bitmapImage = new BitmapImage();
await bitmapImage.SetSourceAsync(fileStream);
imageSource = bitmapImage;
}
The MSDN docs have some more info on this
Thanks Ross, but what I ended up doing instead is I preloaded the half dozen or so bitmaps I needed by using similar code to what you had above, except from resource of course. I did this asynchronously when the page loaded, and then when I set the ImageSource on the button background, I used the already preloaded bitmaps. That way I know I'm not allocated a new chunk of memory for every instance of the bitmap.
I'm building a Win8/WinJS app that loads pictures from the local pictures library. Everything is generally working fine for loading valid images and displaying them in a list view.
Now I need to detect corrupt images and disable parts of the app for those images.
For example, open a text file and enter some text in it. Save the file as .jpg, which is obviously not going to be a valid jpg image. My app still loads the file because of the .jpg name, but now I need to disable certain parts of the app because the image is corrupt.
Is there a way I can check to see if a given image that I've loaded is a valid image file? To check if it's corrupt or not?
I'm using standard WinRT / WinJS objects like StorageFile, Windows.Storage.Search related objects, etc, to load up my image list based on searches for file types.
I don't need to filter out corrupt images from the search results. I just need to be able to tell if an image is corrupt after someone selects it in a ListView.
One possible solution would be to check the image's width and height properties to determine whether it is valid or not.
Yeah, the contentType property will return whatever the file extension is. The best way I can find it to look at the image properties:
file.properties.getImagePropertiesAsync()
.done(function(imageProps) {
if(imageProps.width === 0 && imageProps.height === 0) {
// I'm probably? likely? invalid.
});
where SelectImagePlaceholder is an Image Control.. =)
StorageFile file;
using (IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
try
{
// Set the image source to the selected bitmap
BitmapImage bitmapImage = new BitmapImage();
await bitmapImage.SetSourceAsync(fileStream);
SelectImagePlaceholder.Source = bitmapImage;
//SelectImagePlaceholder.HorizontalAlignment = HorizontalAlignment.Center;
//SelectImagePlaceholder.Stretch = Stretch.None;
this.SelectImagePlaceholder.DataContext = file;
_curMedia = file;
}
catch (Exception ex)
{
//code Handle the corrupted or invalid image
}
}
I keep getting the error image icon when reading images from my DB.
Here is the HttpHandler code:
public void ProcessRequest(HttpContext context) {
....
//After we got the data table:
byte[] image = (byte[])dt.Rows[0]["Picture"];
context.Response.ContentType = dt.Rows[0]["PictureType"].ToString();
context.Response.BinaryWrite(image);
}
I do check and see that image is not null (Just a really big array, as it should be), and PictureType does save the type of the picture that was previously saved in the db. But I still see the error image icon when calling the handler:
<img src='myhandler.ashx?imgid=someid'/>
Any reason for this to happen?