I have been trying to center a PickerIOS, but I am probably missing the underlying logic behind a Picker, because I just want its width to be full screen.
I can manage to do that with iPhone 4s / 5s, but when I run it on the iPhone 6, the Picker seems to be on the left, with some space on the right side.
I have been trying to use alignItem:'center' with a wrapper around the picker, but that just makes it disappear. I have also tried alignSelf, but still doesn't work.
I thought that Picker, by default, had its width to full screen or does it adapt according to the length of the elements?
Do I have to place it in a Flexbox in order to get it centered with a full screen width?
mask1: {
height:120,
overflow:'hidden',
justifyContent:'space-around',
marginTop:50
}
I find out that the style of PickerIOSItem cannot change, and only works fine in NavigatorIOS. I review the example of UIExplorer and there is no more style binding to the Item. Maybe it's a bug.
Related
I'm making a react-native based app, and I can partially use Swift code by react-native's NativeModule feature.
My app will be used as Split view / Slide over mode in iPad, and I want to know if my app is in the left-side, right-side, or Slide-over.
I could get width and height, also origin (CGPoint) by this code.
let window = UIApplication.shared.windows.first
// Then getting X, Y like this...
window.frame.origin.x
Now my app has only one webview, made by react-native-webview.
So I guess, since the webview is the whole content of the app, and it fills app 100%, so it always returns app.
I want to know, not in webView's perspective, but in app's perpective, the POSITION relative to the screen.
For example, if my iPad width is 1400, and if my app is on the half right side, x should be 700.
And if it is on left side, it should be 0.
I really struggled this, but couldn't find any solution.
FYI, I drawed a diagram for this question.
As I wrote on the above, I tried UIApplication.shared.windows.first.frame.
But it only show the CGPoint of webview, not app relative to the screen.
There is no API for getting 'X' or 'LEFT' in react-native-dimension too.
onLayout also not helpful.
Since iOS 11, when the UIWebView is full screen, a fake background appears on the status bar with the same color of the UIWebView background.
Anyone knows how to get rid of it?
Even adding the IUWebView to a storyboard and make it full screen will make the status bar background to appear
I've been trying to edit the size and some other properties of the UIWebView and none of them worked, but it's definitely something from the UIWebView.
Also tried to see all the subviews and it's sizes and didn't see anything strange.
Attached a screenshot, see the grey "statusbar", it disappears when scrolling, and doesn't appear if the UIWebView is not over that part of the screen.
I want it as on the second screenshot, only remove the fake background, not the status bar.
This happens because of UIScrollView new behavior to adjust the content inset to include safe area insets like the status bar.
To fix it, just set it to UIScrollViewContentInsetAdjustmentNever
[self.webView.scrollView setContentInsetAdjustmentBehavior:UIScrollViewContentInsetAdjustmentNever];
Since iOS 11 Beta 4 you can add this to your viewport and will also remove the fake statusbar
viewport-fit=cover
To do this entirely in HTML/CSS, viewport-fit=cover in the Viewport meta tag is the correct way to handle this.
But you'll also want to adjust your padding dynamically to handle the differently sized status bar on iPhone X with its notched camera/speaker.
Luckily, Apple exposed some CSS constants for the safe area insets, so you can take advantage of those in your CSS:
i.e., padding-top: constant(safe-area-inset-top);
I wrote a bit more about this scenario and the new features for iOS 11 and iPhone X: https://ayogo.com/blog/ios11-viewport/
Swift version:
webView.scrollView.contentInsetAdjustmentBehavior = .never
When my app launches, I see a white screen, instead of my launch image. I am using a storyboard, as required, and everything was working fine for about 2 months before this. I didn't change anything related to the image or storyboard either, it just started happening. I should mention that this started happening sometime after my first time uploading to TestFlight...but I doubt that is relevant. I have tried changing the constraints of the image to make it smaller than the bounds, and it still doesn't show up, so it isn't the size of the image. Again, I seemingly did nothing to have this start happening. Most of the questions related to my problem on stackoverflow have to do with the user not using a storyboard as required with iOS 9. Please help. Thanks.
UPDATE
I launched it on the simulator (iPad2) and the launch image for that was too small...there was white exposed above and to the right, I'm guessing I need to fix something in the storyboard but I'm not sure what.
UPDATE
I made a new storyboard and assigned the launch-screen config to it, and there is still a white screen.
I deleted the UIImageView and then inserted a new one with dimensions 200 x 200.
I added the image to the UIImageView.
I adjusted the constraints to the same values that I was using before.
Adding the image to the 200 x 200 UIImageView, before adding the constraints, seemed to be the key.
Make sure that one of the view controllers has the Is Initial View Controller checkbox checked in the Attributes Inspector in the right sidebar, that got me.
In project by default you LauchScreen.xib. Put your launch image there and set it’s top, bottom, leading, trailing constraints. Tap your project file and scroll down. There you will see: LauchScreen option and MainStoryboard. Set LauchScreen to your LauchScreen.xib. That’s it))
I use a set of launch images for my app and noticed that when I'm having a call, recording a voice note or sharing my Internet connection and put that activity in the background and launch my app, the launch screen is wrinkled in the center. Is there anything I can do to make the image look ok or is it just a standard iOS behavior?
Just define a key in plist file will solve your problem
Status bar is initially hidden = YES
OK, the solution I found is to hide status when launching the app, just like here
Seems like Apple "take" 4% of screen space from the middle of the screen (as far as I tested) to give it to status bar. Personally I faced this problem when using iPhone modem mode.
So if it is not critical for image to be centered vertically - the solution would be to place image above/below this "4% middle screen area".
Examples when image is cropped:
How image should look(image centered vertically & horizontally, width & height are fixed size)
How it actually looks
Example when image looks as supposed to (but not centered) :
Constraints example
Image with new constraints example
I am working on my app to customize button accordingly. However once I change my button accordingly, now it has became irresponsive. You could see my code as follows. By the way, this button still works when I run on iPhone 4. It is really strange!
once I change my button position it works, but it wont work the position I want!
float screenSizeHeight=[UIScreen mainScreen].bounds.size.height;
if(screenSizeHeight==568)
[positionButton setFrame:CGRectMake(184,280,77,30)];
if(screenSizeHeight==480)
[positionButton setFrame:CGRectMake(184,240,77,30)];
Hand Bag button is not working!
Check your condition :
if(screenSizeHeight==568)
In both cases you have used screenSizeHeight == 568 so replace one with screenSizeHeight = 480
Hope it helps you.
Check your Default-568h.png image get added or not. If it isn't added , you mainscreen returns bounds as 320x480.
Note : 1) If you rotate device , check your main screen bounds. It may lead to confusion. You can try Better way to use it.
2) This Default-568h.png is only allowed when building an app using Xcode 4.5 and the iOS 6 SDK
3) When you ask a UIScreen for it's Bounds you get the bounds of the screen, which is the whole device screen. (the status bar is part of the screen)