I want to take a photo or pick a picture from iphoto library and then upload it to webserver.
Use imagePickerController I can only get a UIImage Object,I can't know it's file path or file type(png,jpg,etc.). I have google for a long time but still can't find a solution. Any one can help me? Thank You!
You need to get the raw data from the image. Take a look at questions like this one.
Then, just set the appropriate MIME type on your http request and shoot the data up to the server.
Related
Okay so I want to load a image from a URL in my app, however this image will need to be updated every month manually, therefore its not practical to have to submit a new update to apple every time the url changes. So does anyone no of a picture/file sharing site that would allow me keep the same URL for the image even when uploading a updated version of the image?
You can just use the same url for the image that you want presented hosted on your domain or a hosting site.
So something like
http://www.mydomain.com/appImage.jpg
That you always call to and always is the address of the relevant image. Basically the URL is just a location that you can store any image at.
Up to my knowledge, in order to achieve this you will need a static URL. So that means you'll have to buy a domain from a hosting service.
Or if not you can use Google Drive for this. But you'll have to do some more coding for this.
Try using Google Drive:
Upload a text file(*.txt) to your Google Drive and get a shareable link. Convert it to a direct download link.
Next save whatever your image as a String (base64); I have attached some interesting coding examples below.
Then give the file link to your app; download the file; read the String(base64) convert it back to image format.
When you want to update the Image convert it to a String; open the Google Drive; edit your file using Drive Notepad (Do not use
Google Docs) and simply save it Ctrl+S.
Useful Links:
Google Drive Direct Link Generator
Convert between UIImage and Base64 string
Converting between Image and Base64 string in iOS
Java BufferedImage to PNG format Base64 String
Convert image to base64 with java
Hope this helps.
I'm developing an app and one of its features is similar to twitter,so I have a table with each "tweet" and I display the user's picture too and I don't know what is the best way to load a lot of pictures. The images come from the server as an url.
My app's structure is:
1- I call to the server, and I get the response
2- I parse the response and I iterate it creating objects
3- I load that objects in the tableview's store
4- I reload the table
I thought one way is when I am creating the object, I load the image and I assign to the object's attribute. I mean, each time I create a object type "tweet" for example, I create the image calling the url with nsdata...
I dont know if that solution is correct or can be better. Can anyone give me a hand? Thanks in advance
Take a look at the SDWebImage API. It will do much of this automatically for you.
So this is what i want to do.
I have an Image object ( http://google-web-toolkit.googlecode.com/svn/javadoc/1.5/com/google/gwt/user/client/ui/Image.html ) and i want that uploaded to the Blobstore.
So this is my problem.
The formpanel i'm trying to use only works when the user actually supplies a file directory, so there is no way i can give an image adress to the form to upload like this:
blob:http://127.0.0.1:8888/6276f066-d415-45f4-984b-e0f98c542c50
So my question is:
How would i be able to upload an image from such a source to the blobstore.
Is it even possible?
Any and all help is much appreciated.
Gwt's Image represents and <image> tag, which in turn represents an image loaded from server.
AFAIK, there is no way for javascript (and GWT) to get the data from <image> or Image, so consequentially it can not be uploaded.
Since the data for Image comes from server, why do you need to upload it back to server? If you are doing some selections, couldn't you just get the URL of the image and sent that to server?
i am making an app in which i have to upload an image/video file to the server...i want to know what things i needed to do this..?and i also have to show the progress bar while image is uploading...how can i do this..?
can you write some code snippet on how to upload file to server...?
If you are using http to transfer files.Allseeing-i have a great api for this called ASIHTTPRequest, its feature rich, well documented, easy to use and it supports file transfer tracking.
They have code examples and a description on how to include it in your projects.
Im using a library for extracting EXIF data from google code.
I assume with iPhone OS 3 that you can use UIImagepicker to do it.
I just want to be able to extract the f-Stop, Shutter Speed and ISO data from the image.
I want to discard the image and just use the information that I store up.
Would I end up extracting the tag data in the viewcontroller.m or h?
This part of coding seems to baffle me a little bit and I cant figure out what to put where.
Can anyone help me out? I still havent figured out XCode all that well.
Whatever executable code you have needs to go in a .m (implementation) file, not a .h (header file). The headers are just for declaring things like classes, protocols, and methods, not for any real processing work.
Are there any tutorials that you know of that explain using exif step by step?
im using the one found here -
http://iphone-land.blogspot.com/2008/06/geo-tagging-images-using-iphone-exif.html
However, for a newbie like me, its not all that thorough because im coming up with errors and i am not sure how to resolve them.
I guess im just shy in all this. need a good place to start
You will likely have trouble getting access to an images metadata if you get it via UIImagePickerController, due to the issues described in this question: UIImagePickerController and extracting EXIF data from existing photos