Programmatically scroll UIScrollView so UILabel is just below navigation bar
I have a UIScrollView that contains various blocks of buttons, textfields and labels.
There is a UILabel heading the second block. When I tap a button beside it, I wish to programmatically scroll so this label is at the top left of the screen, just below the navigation bar.
I can use the setContentOffset function to do this programmatically, but I can't work out how to programmatically get the value for y. As the top block can expand or contract based on user input I need to get this value programmatically. How do I get the correct value of y for my label?
let myLabelTopYPoint = ??!
I played around with the following two lines but neither gave what I wanted...
let myLabelTopYPoint = myLabel.convert(myLabel.center, to: self.view).y
let myLabelTopYPoint = myLabel.frame.maxY
(Applying the below with a manually chosen y of 200 works in the meantime for most user inputs, but is not satisfactory)
myScrollView.setContentOffset(CGPoint(x: 0, y: myLabelTopYPoint), animated: true)
ios swift
asked Nov 11 at 7:53
Daniel
305
add a comment |
I have a UIScrollView that contains various blocks of buttons, textfields and labels.
There is a UILabel heading the second block. When I tap a button beside it, I wish to programmatically scroll so this label is at the top left of the screen, just below the navigation bar.
I can use the setContentOffset function to do this programmatically, but I can't work out how to programmatically get the value for y. As the top block can expand or contract based on user input I need to get this value programmatically. How do I get the correct value of y for my label?
let myLabelTopYPoint = ??!
I played around with the following two lines but neither gave what I wanted...
let myLabelTopYPoint = myLabel.convert(myLabel.center, to: self.view).y
let myLabelTopYPoint = myLabel.frame.maxY
(Applying the below with a manually chosen y of 200 works in the meantime for most user inputs, but is not satisfactory)
myScrollView.setContentOffset(CGPoint(x: 0, y: myLabelTopYPoint), animated: true)
ios swift
asked Nov 11 at 7:53
Daniel
305
add a comment |
I have a UIScrollView that contains various blocks of buttons, textfields and labels.
There is a UILabel heading the second block. When I tap a button beside it, I wish to programmatically scroll so this label is at the top left of the screen, just below the navigation bar.
I can use the setContentOffset function to do this programmatically, but I can't work out how to programmatically get the value for y. As the top block can expand or contract based on user input I need to get this value programmatically. How do I get the correct value of y for my label?
let myLabelTopYPoint = ??!
I played around with the following two lines but neither gave what I wanted...
let myLabelTopYPoint = myLabel.convert(myLabel.center, to: self.view).y
let myLabelTopYPoint = myLabel.frame.maxY
(Applying the below with a manually chosen y of 200 works in the meantime for most user inputs, but is not satisfactory)
myScrollView.setContentOffset(CGPoint(x: 0, y: myLabelTopYPoint), animated: true)
ios swift
asked Nov 11 at 7:53
Daniel
305
I have a UIScrollView that contains various blocks of buttons, textfields and labels.
There is a UILabel heading the second block. When I tap a button beside it, I wish to programmatically scroll so this label is at the top left of the screen, just below the navigation bar.
I can use the setContentOffset function to do this programmatically, but I can't work out how to programmatically get the value for y. As the top block can expand or contract based on user input I need to get this value programmatically. How do I get the correct value of y for my label?
let myLabelTopYPoint = ??!
I played around with the following two lines but neither gave what I wanted...
let myLabelTopYPoint = myLabel.convert(myLabel.center, to: self.view).y
let myLabelTopYPoint = myLabel.frame.maxY
(Applying the below with a manually chosen y of 200 works in the meantime for most user inputs, but is not satisfactory)
myScrollView.setContentOffset(CGPoint(x: 0, y: myLabelTopYPoint), animated: true)
ios swift
ios swift
asked Nov 11 at 7:53
Daniel
305
asked Nov 11 at 7:53
Daniel
305
asked Nov 11 at 7:53
Daniel
305
asked Nov 11 at 7:53
Daniel
305
asked Nov 11 at 7:53
Daniel
305
305
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can get y position of your label in scroll view like this:
let myLabelTopYPoint = yourScrollView.convert(myLabel.frame, to: yourScrollView).minY
answered Nov 11 at 8:08
Robert Dresler
3,1541523
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
|
show 1 more comment
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can get y position of your label in scroll view like this:
let myLabelTopYPoint = yourScrollView.convert(myLabel.frame, to: yourScrollView).minY
answered Nov 11 at 8:08
Robert Dresler
3,1541523
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
|
show 1 more comment
You can get y position of your label in scroll view like this:
let myLabelTopYPoint = yourScrollView.convert(myLabel.frame, to: yourScrollView).minY
answered Nov 11 at 8:08
Robert Dresler
3,1541523
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
|
show 1 more comment
You can get y position of your label in scroll view like this:
let myLabelTopYPoint = yourScrollView.convert(myLabel.frame, to: yourScrollView).minY
answered Nov 11 at 8:08
Robert Dresler
3,1541523
You can get y position of your label in scroll view like this:
let myLabelTopYPoint = yourScrollView.convert(myLabel.frame, to: yourScrollView).minY
answered Nov 11 at 8:08
Robert Dresler
3,1541523
edited Nov 11 at 8:32
answered Nov 11 at 8:08
Robert Dresler
3,1541523
answered Nov 11 at 8:08
Robert Dresler
3,1541523
answered Nov 11 at 8:08
Robert Dresler
3,1541523
3,1541523
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
|
show 1 more comment
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Thanks, but that always gives me "0" - I need the point relative to the navigation bar rather than to itself. Unless I'm doing something wrong?
– Daniel
Nov 11 at 8:17
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Try edited answer
– Robert Dresler
Nov 11 at 8:32
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Unfortunately again myLabel.frame gives 0,0 so scrolls to the top of the page. Thanks for trying
– Daniel
Nov 11 at 8:49
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Didn't you forget to use yourScrollView.convert instead of view.convert?
– Robert Dresler
Nov 11 at 8:50
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
Seems as a correct answer to me. Or may be your scrollView's top is constrained to the top of the screen instead of navigation bar.
– kelin
Nov 11 at 8:56
|
show 1 more comment
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