Confused about plotting origin in iOS
Code
self.view.frame.origin.y = self.view.frame.origin.y - keyboardSize.height
Here I am trying to set my views origin to my view-height of the keyboard
My output
My Doubt
my view has to go below the keyboard according to math, what is happening?
ios swift
edited Jan 20 at 13:54
Sulthan
96.3k16156201
add a comment |
Code
self.view.frame.origin.y = self.view.frame.origin.y - keyboardSize.height
Here I am trying to set my views origin to my view-height of the keyboard
My output
My Doubt
my view has to go below the keyboard according to math, what is happening?
ios swift
edited Jan 20 at 13:54
Sulthan
96.3k16156201
The view coordinate start from top-left corner, so (0, 0) is top-left not bottom-left.
– Mukesh
Jan 20 at 12:23
add a comment |
Code
self.view.frame.origin.y = self.view.frame.origin.y - keyboardSize.height
Here I am trying to set my views origin to my view-height of the keyboard
My output
My Doubt
my view has to go below the keyboard according to math, what is happening?
ios swift
edited Jan 20 at 13:54
Sulthan
96.3k16156201
Code
self.view.frame.origin.y = self.view.frame.origin.y - keyboardSize.height
Here I am trying to set my views origin to my view-height of the keyboard
My output
My Doubt
my view has to go below the keyboard according to math, what is happening?
ios swift
ios swift
edited Jan 20 at 13:54
Sulthan
96.3k16156201
edited Jan 20 at 13:54
Sulthan
96.3k16156201
edited Jan 20 at 13:54
Sulthan
96.3k16156201
edited Jan 20 at 13:54
Sulthan
96.3k16156201
edited Jan 20 at 13:54
Sulthan
96.3k16156201
96.3k16156201
asked Jan 20 at 12:18
user10905488
The view coordinate start from top-left corner, so (0, 0) is top-left not bottom-left.
– Mukesh
Jan 20 at 12:23
add a comment |
The view coordinate start from top-left corner, so (0, 0) is top-left not bottom-left.
– Mukesh
Jan 20 at 12:23
The view coordinate start from top-left corner, so (0, 0) is top-left not bottom-left.
– Mukesh
Jan 20 at 12:23
The view coordinate start from top-left corner, so (0, 0) is top-left not bottom-left.
– Mukesh
Jan 20 at 12:23
add a comment |
2 Answers
2
active
oldest
votes
The coordinate space that UIViews are in is not exactly the same as the cartesian coordinate plane you learned in math class, which might look something like this:
In UIKit, the positive y direction is downwards, and the negative y direction is upwards. This means that a view with a small y coordinate will be at the top of its superview. As you increase its y coordinate, it moves downwards. It looks something like this:
This line of code:
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
decreases the y coordinate of self.view, hence moving it up. By how much? Well, the keyboard's height.
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
what about x axis?
– user10905488
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
add a comment |
View coordinate system increaes from top (0) to bottom (device height) , so this
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
raises the view as it decrease it's y origin position
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The coordinate space that UIViews are in is not exactly the same as the cartesian coordinate plane you learned in math class, which might look something like this:
In UIKit, the positive y direction is downwards, and the negative y direction is upwards. This means that a view with a small y coordinate will be at the top of its superview. As you increase its y coordinate, it moves downwards. It looks something like this:
This line of code:
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
decreases the y coordinate of self.view, hence moving it up. By how much? Well, the keyboard's height.
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
what about x axis?
– user10905488
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
add a comment |
The coordinate space that UIViews are in is not exactly the same as the cartesian coordinate plane you learned in math class, which might look something like this:
In UIKit, the positive y direction is downwards, and the negative y direction is upwards. This means that a view with a small y coordinate will be at the top of its superview. As you increase its y coordinate, it moves downwards. It looks something like this:
This line of code:
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
decreases the y coordinate of self.view, hence moving it up. By how much? Well, the keyboard's height.
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
what about x axis?
– user10905488
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
add a comment |
The coordinate space that UIViews are in is not exactly the same as the cartesian coordinate plane you learned in math class, which might look something like this:
In UIKit, the positive y direction is downwards, and the negative y direction is upwards. This means that a view with a small y coordinate will be at the top of its superview. As you increase its y coordinate, it moves downwards. It looks something like this:
This line of code:
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
decreases the y coordinate of self.view, hence moving it up. By how much? Well, the keyboard's height.
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
The coordinate space that UIViews are in is not exactly the same as the cartesian coordinate plane you learned in math class, which might look something like this:
In UIKit, the positive y direction is downwards, and the negative y direction is upwards. This means that a view with a small y coordinate will be at the top of its superview. As you increase its y coordinate, it moves downwards. It looks something like this:
This line of code:
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
decreases the y coordinate of self.view, hence moving it up. By how much? Well, the keyboard's height.
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
answered Jan 20 at 12:23
SweeperSweeper
67.4k1073139
67.4k1073139
what about x axis?
– user10905488
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
add a comment |
what about x axis?
– user10905488
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
what about x axis?
– user10905488
Jan 20 at 12:29
what about x axis?
– user10905488
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
@newjourney x axis is the same. As you increase the x coordinate, it moves to the right.
– Sweeper
Jan 20 at 12:29
add a comment |
View coordinate system increaes from top (0) to bottom (device height) , so this
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
raises the view as it decrease it's y origin position
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
add a comment |
View coordinate system increaes from top (0) to bottom (device height) , so this
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
raises the view as it decrease it's y origin position
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
add a comment |
View coordinate system increaes from top (0) to bottom (device height) , so this
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
raises the view as it decrease it's y origin position
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
View coordinate system increaes from top (0) to bottom (device height) , so this
self.view.frame.origin.y=self.view.frame.origin.y-keyboardSize.height
raises the view as it decrease it's y origin position
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
answered Jan 20 at 12:23
Sh_KhanSh_Khan
42.6k51327
42.6k51327
add a comment |
add a comment |
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The view coordinate start from top-left corner, so (0, 0) is top-left not bottom-left.
– Mukesh
Jan 20 at 12:23