I'm making an application who needs to display a map, contained in a large image file (png). The user must be able to zoom in/out the image and drag it in order to scroll the image with touch gestures.
I'm not sure that you get it, but i want to display a single image as it would be displayed by the "Photos" iphone application.
I would like some hints about the best way to do it with those gesture and with a navigation header in order to leave the image view.
Thanks in advance if you can give me any help about this issue because I did not find any clue on the phonegap doc.
/ouss
Why don't you use the built inn components for this?
Sounds like you need to wrap an ImageView inside a ScrollView and a HorizontalScrollView, then rescale the image by handling onTouch-events.
Take a look at the MapKitPlug plugin:
https://github.com/phonegap/phonegap-plugins/tree/master/iPhone/MapKitPlug
Good Luck!
I would use http://cubiq.org/iscroll-4 which has some really slick image zoom going on. You can also start loading new images after certain zoom levels for finer grains of quality.
I would suggest Child Browser phonegap plugIn.
It is very simple and easy to implement.
It supports loading page from a url as well as you can show any kind of images.(png, jpg, jpeg, bmp and gif)
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I am losing most of my work time stucking at scrollview,autolayout issues.And now,when i found TNImageSliderViewController.I see that i have hope in scrolling images with no autolayout issue.Thanks to the developer who write TNImageSliderViewController.But,after that I want to do another thing which still keep making me stuck.I tried many tutorial and video and which keep making me stuck.
Here is what i need to do...
1.When I clicked one of my image in scrollview,i want to see full screen of that images i click at another view.
2.That another view should also have capabilities like TNImageSliderViewController which we can slide images.
3.I want to add zoom with pinch or tapped zoom at full screen image that i clicked.
Any Idea?or suggestion or library which it can do it easily and completely with no autolayout issue which we can rotate as we like?
Please help...Please,I really need help.Also all newbie like us might want the same answer like me.
I have an app with a few pictures. If the user clicks on one of them, I want him to be able to zoom, pan, scale and so on. I don't need something like Three20. First of all, I'm loading the images from file inside the app, second I don't need the "library" feature (that displays all the images in a grid > like the Photos.app). So I only need the part in the left picture...
How can I do that? Is there any "sample class" or tutorial?
Thanks a lot in advance!
The UIScrollView supports not only scrolling, but also zooming in and out, in fact, it's the super class of things like webViews and tableViews.
It's a matter of fitting an UIImageView inside an UIScrollView and make the contentSize match, and enable zooming (maximum/minimum zooming is 1.0 by default, setting it to something else allows zooming).
check out the Nibmus Project, they have a nice photos controller http://jverkoey.github.com/nimbus/group___nimbus_photos.html, which sounds to be exactly what you're looking for.
I'm looking to see if anyone has experience with this. I'm a developer first and a designer second, so this is really not my strongest suit.
I have a project I'm working on where the goal is to get image and text side-by-side in landscape mode on the iPhone. I'd like to be able to zoom in on the image using a pinch like normal, but not zoom in on the text as well while that is happening. I don't know if this is even possible or what kind of hacks it would take to get it working.
If someone thinks this is bad in general from a UI perspective, I am open to suggestions.
I have considered keeping two copies of the image (low and high res) and then swapping them out inside of div with an overflow: scroll; so users can get a zoomed version and then scroll around. It doesn't give you the full effect of zooming, but it might accomplish a similar goal. I don't know if this would work either.
If anyone has suggestions or experience on the subject, please chime in. Thank you!
To do this in mobile safari you would probably have to use javascript. Theres a jQuery plugin here: http://plugins.jquery.com/project/pinch
Might be of some help
If you want to use Mobile Safari, then you will need a touch framework like jTouch to simplify things.
Natively, you should put your image and text inside a UIScrollView, and return the image view in the the viewForZoomingInScrollView: (in the scroll view's delegates) to the image view.
Is that what you want?
What I want to achieve is some way of supplying dynamically generated visual content that the user of a device could interact with - touch icons, text links, images etc embedded within some graphic image generated either on the phone or on a server. I would need, pinch, zoom, rotate functionality aswell.
Is it possible to render graphics dynamically within the iPhone's UI? So, for example, would it be feasible to supply an XML file to a device and have that render a custom map within the device? Would you have all the pinch-zoom, rotate and click on icons type functionality of a normal UI?
Alternatively, could I pre-render a png on a server and supply that to the device?
Any ideas or suggestions are appreciated.
Look into Quartz2D to help you do the custom drawing, it should do pretty much anything you want to do....
Sure, any of those are possible.
You'll probably need to write some code to interpret your XML file and generate an appropriate UIView and then embed that in the window.
And you're totally welcome to download images and display them in a UIImageView.
Looking at the QuartzDemo sample application, I love the speed of the PDF rending using quartz alone (that is, without using uiwebview). However, when I'm zooming in the PDF it doesn't seem to become more clear like it does in PDF view.
Is there something that I can change to have the same effect when zooming in and out using multitouch? like manipulate the PDF transformation matrix or something?
Thanks a bunch.
--Ben
To make it zoom, and more clear,
You can use CATiledLayer. You can see the following example.
http://www.olivetoast.com/blog/hamish/simple_uiscrollview_catiledlayer_example.ot