I want to change the size of an image selected from the photo gallery. Is it possible? I'm getting an image sized (320, 290) and I want to change the image size to (480, 320).
If you don't want to change the actual image, but only how it appears, then you can plunk the image as-is in a UIImageView and then make that view any size you like. It won't look great, especially if you are changing the aspect ratio, but it does the job.
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I am wondering about an image in a view. Let's assume i have a view of 300x300 and inside i place an image of arbitrary size. I use resizeMode='contain' to fit the whole image into the view. If the image exceeds 300x300 it's fine, but if it's smaller then it stretches to the borders. Is there any way of keeping original image size if it's smaller than it's view?
Cheers!
I have a 405x720 image that it is to cover the background image. I've noticed that it stretches the image if the device's screen is smaller than the image. (I'm using a Galaxy S4 to test my apps).
Here's what I have so far:
var fullView = Ti.UI.createImageView({
layout: 'vertical',
width: '100%',
height: '100%',
image: '/images/background.png'
});
I've heard about the clipping technique, however that is only available for iOS and I'd like to have it for both platforms. Is there a way to do this? Or should I try to resize it appropriately? Tips/Suggestions are appreciated!
You should use proper images according to the aspect ratio of screen you are going to run your app on.
You can do this by calculating the width-height ratio of device and then you can decide which image to show on.
But putting a single resolution image directly to cover up the whole screen
is never going to work.
To resize an image, you can use Ti.Blob class' methods after fetching your image using Ti.Filesystem
Also remember that putting an image on whole background takes lot of memory especially in Android. That's why most of the apps do not use complete image to cover up background, rather they use small images wherever necessary and fills up other areas by colors or gradients as required.
But if your requirement is only to use image in background then unload it as soon as you move to different screen and load it again as you are back on it.
Further points to keep note of:
If you set bg image on a View, then it will be fit to cover the dimension of a View. So, if you have a view of width/height to 100%, then image will be fit into it. It means that image size will depend on View's dimension, not the View dimension will depend on image size.
If you set image on ImageView, and suppose you have:
ImageView width = FILL to screen size of 720, then the image height will be automatically decided to keep the aspect ratio. It means that if you have an image of size width=720 and height=400, then the ImageView will be of width=FILL & height=400
Image of size width=1000 and height=800 & ImageView height = 400, then the ImageView will be of width=500 & height=400
The problem is that you're actually telling the image control to load the image on an object that is stretched to the entire width and height of the screen - and when the screen aspect ratio is different than the one you have cropped your image by then you get bad aspect ratio and image looks screwed up.
If you remove either the width or the height, than the aspect ratio of the image will be loaded.
When I want a background image what I found the best way is to make a square image, and then set my ImageView height to Ti.UI.FILL and my width to Ti.UI.SIZE - That way it shows good aspect ratio and side that dont "fit" the screen (width or height) are not shown.
i have some picture which is 675x503. I would like to make more width on it and let's say to 1024 and in height to 400. How to do that without cutting my image and keep quality? I just would like to have this image on my website top. I got photoshop 6. I tried with Image->image size but its not what i need.
If you don't want to cut the picture at all, this will distort the image due to different height and width ratios. If this is not an issue, you could simply hit ctrl(or cmd)+t when the layer with the picture is selected. It will let you resize and rotate the entire image. There is also an option in the Image -> Image Size menu called "Bicubic Sharper", found in the drop-down list at the bottom of the menu(Photoshop CS6). It's meant for image reduction and should also solve your problem.
I am using a crop tool in my app and I need to modify a UIImageView so that it fits an image exactly after inserting the image in aspect fit mode.
So an image is selected and added to the UIImageView in aspect fit mode. The problem is that this then leaves "blank space" around the image inside the UIImageView that needs trimming. I was wondering how I could then go and resize the holding UIImageView based upon the image inside.
Is this possible?
The Easy way is simply using the following code on your "imageView"
imageView.contentMode = UIViewContentModeScaleAspectFit;
Assuming you want to cut a "zoomed" section of your image to fit fully into your imageView
check your original image width and height
Assuming width is bigger in size then height , scale the image width to the holder width
center the image on your holder , the width will fit perfectly (section2) and the height will simply be cropped follow above and below the holder.
It turns out that a better approach is to use the following idea.
How to get the size of a scaled UIImage in UIImageView?
Instead of trimming the UIImageView, insert the image and then get the dimensions of the image inside the UIImageView, from there you can then resize the UIImageView to match the dimensions of the image inside.
I got app which can add photo from camera or gallery. After adding each photo showes in UIImageView. But they show with bad aspect ratio. Photoes are extended on UIImageView's size.
How can i show photoes with their real aspect ration?
UPD and what about small pictures? if user will add really small picture, this picture will resize on all area of UIImageView. How show this pictures in real size?
Doing myImageView.contentMode = UIViewContentModeScaleAspectFit; is one option.
But it isn't enough because it changes the aspect ratio of the image, but it doesn't change the source image.
The only way to do that is to use the UIGraphicsImageContext as explained there:
Resize UIImage with aspect ratio?