I've encountered what I think is a bug, and I'm wondering if anyone else has encountered this, and/or has a work around for it.
I have images imported from the device's camera via the UIImagePickerController representable. Having imported this image, I then save it to the documents directory, and then display it using the following code:
Image(uiImage: image)
.resizable()
.frame(height: 300)
.scaledToFill()
This shouldn't cause the image to distort, as scaled to fill should simply enlarge the image until it fits the frame without distorting it. However, i'm getting a fair amount of horizontal stretching in the final image:
Has anyone encountered this problem? I don't think i'm missing anything obvious, as when I use it for images not taken with the camera then the code performs fine.
Try changing the order of the modifiers as below,
Image(uiImage: UIImage(named: "08-512")!)
.resizable()
.scaledToFill()
.frame(width: 50, height: 20)
//.clipped()
}
Related
Image("sticker5")
.resizable()
.frame(width: 47, height: 47)
.scaledToFill()
sticker5 is a picture with 94px * 94px. This is the size recommended by guideline. The Error is
ComplicationsExtension[403:17806] [archiving] Widget archival failed due to image being too large [2] - (94, 94).
We don't want to use low pixel images. That would look terrible. Please Help!
I am downloading a JPG image from a remote server. If I use AsyncImage, portrait images taken from the phone's library are rotated 90 degrees. Landscape images taken from the phone's photo library are fine. Also, portrait and landscape photos taken from the phone's camera are fine. Looking at the image on a computer using the URL renders in the correct orientation. If, instead of using AsyncImage to display the image, I instead download it as Data and convert it to a UJIImage, it works fine. So this is only an issue when using AsyncImage. How can I prevent portrait images from rotating 90 degrees while still using AsyncImage?
VStack {
AsyncImage(url: imageURL, transaction: Transaction(animation: .spring())) { phase in
switch phase {
case .empty:
Color.purple.opacity(0.1)
case .success(let image):
image
.resizable()
.aspectRatio(contentMode: .fill)
.transition(.scale)
case .failure(_):
Image(systemName: "exclamationmark.icloud")
.resizable()
.scaledToFit()
#unknown default:
Image(systemName: "exclamationmark.icloud")
}
}
.frame(width: 200, height: 250)
.cornerRadius(10)
}
Update: Although this doesn't specifically answer the question on AsyncImage I was able to get around this issue by performing a transform on the image before it is sent to the server. I know there are issues of orientation when sending as PNG; however, I was sending using jpgData from a UIImage. However, I applied this transform anyway before sending and it worked when receiving via AsyncImage. As a UIImage it would have been fine so some internal process within AsyncImage is handling it differently and thus this additional transform that is otherwise not required for UIImage or any other platform, is required in this instance. Perhaps that is simply the answer, but I'll leave it as is given the question is about the behavior of AsyncImage.
I'm trying to work our if it's possible to display text in a Shape so that the text it not rectangular but the same as the shape it's self.
I have tried
Text(loremIpsum)
.font(Font.system(size: 14))
.clipShape(Circle())
which the result was that I'm not seeing new lines when text reaches the edge of the shape.
I then tried to use the circle first and add text to that but that resulted in text appearing outside the circle.
Circle()
.stroke(Color.black, lineWidth: 2)
.padding(6)
.overlay(
Text(loremIpsum)
.font(Font.system(size: 14))
)
I'm wanting to achieve Text that fits perfectly into whatever Shape I use. Is this possible?
The question suggested here does not answer my question sadly. hat just fits text into a Shape but still retains a rectangular frame. I'm trying to make text exactly match the shape I am placing it in.
I've had many similar issues to this when using ScrollViewand LazyVStack/ LazyHStack where the content of the lazy stack will stutter upon bouncing on the edge of the ScrollView.
First I thought it might be due to using complex Views on the lazy stack that would cause layout issues in SwiftUI but I've manage to come up with a MWE that uses a very simple view hierarchy and the issue is still there.
This causes a stutter when scrolling fast to the left and upon bouncing on the leading edge of the ScrollView:
ScrollView(.horizontal) {
LazyHStack {
Color.red.frame(width: 450)
Color.green.frame(width: 250)
Color.blue.frame(width: 250)
}
}
.frame(width: 350)
Decreasing the width of the first view makes the stutter go away
ScrollView(.horizontal) {
LazyHStack {
Color.red.frame(width: 400) //<- No stutter
Color.green.frame(width: 250)
Color.blue.frame(width: 250)
}
}
.frame(width: 350)
For this MWE the stutter only seems to happen on the device (maybe because I can't scroll fast enough in the simulator). However, I've had the same problem happen in the simulator with more complex views.
Any ideas if this is a bug in SwiftUI?
Tested on an iPhones Xs Max with Xcode 13 beta 1 and iOS 15.
I have a png which is partically transparent, namely it has alpha channel. But when I used the following code, the transparent becomes white. I guess the alpha channel is missing. Do you know how to solve this problem? Thank you.
This is the reproducible code.
Image("power")
.resizable()
.aspectRatio(contentMode: .fit)
This is the image
This is the effect on simulator
I used this code to manage to show the transparent effect, but foreground colors are lost.
Color.black
.frame(width: home.screenWidth-2*home.defaultPadding,
height: home.screenWidth)
.mask(Image("power")
.resizable()
.aspectRatio(contentMode: .fit))
Reason
Thank you for your helps so much!!!! Without your support, I cann't find the reason.
The compression for the png should be automatic, my project is inherited(basic) somehow, that's why it rendered white.
The code and image has no problem.
That's what should happen. You've got an image with an alpha channel over a white background, so you can't see any of the white elements in your image. Change your Color Scheme to dark with .preferredColorScheme(.dark) and you'll see this: