Can't Get Rid of Auto Constraints Warning - ios

Question

I was recently having an issue with animating a UITableView. It turned out that the issue was being caused by auto layout constraints. I disabled auto layout for the UITableView by using the following code:
myTableView.translatesAutoresizingMaskIntoConstraints = YES;
This solved the issue but now every time I animate the UITableView I break the constraints placed on the frame and get the following warning.
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSIBPrototypingLayoutConstraint:0x170a95db0 'IB auto generated at build time for view with fixed frame' V:|-(538)-[UITableView:0x140330c00] (Names: '|':UIView:0x170199640 )>",
"<NSIBPrototypingLayoutConstraint:0x170c9d010 'IB auto generated at build time for view with fixed frame' V:[UITableView:0x140330c00(220)]>",
"<NSAutoresizingMaskLayoutConstraint:0x175e850a0 h=--& v=--& UITableView:0x140330c00.midY == + 458>",
"<NSAutoresizingMaskLayoutConstraint:0x175c97b10 h=-&- v=-&- 'UIView-Encapsulated-Layout-Top' V:|-(0)-[UIView:0x170199640] (Names: '|':UITransitionView:0x143942020 )>"
)
Will attempt to recover by breaking constraint
<NSIBPrototypingLayoutConstraint:0x170a95db0 'IB auto generated at build time for view with fixed frame' V:|-(538)-[UITableView:0x140330c00] (Names: '|':UIView:0x170199640 )>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
I need to use translatesAutoresizingMaskIntoConstraints to make my animation work, but would like to get rid of this pesky warning. Is there any way to eliminate this warning without removing translatesAutoresizingMaskIntoConstraints = YES?
Edit in response to comments:
So the UITableView has a width of 320 and a height of 220. It covers half of the screen and can be minimized or maximized. The view is initialized with the UITableView in a minimized state with just the top section header showing at the bottom of the screen. When the user clicks on a button in the section header the UITableView is expanded form the bottom up to cover half of the viewable screen. The expansion and minimization of the UITableView is where the UITableView is animated. When the user clicks the maximize/minimize button the the y component of the UITableView frame is changed to move it accordingly. Here is the code I use to animate the table view:
UIImage *downImage = [UIImage imageNamed:#"arrowDown.png"];
UIImage *upImage = [UIImage imageNamed:#"arrowUp.png"];
UIButton *btnExpandCompress = (UIButton *)sender;
[btnExpandCompress setEnabled:NO];
if (showingTable)
{
[UIView animateWithDuration:0.7 animations:^{
CGRect frame = animatedTable.frame;
frame.origin.y += animatedTable.frame.size.height - 30;
animatedTable.frame = frame;
} completion:^(BOOL finished) {
showingTable = NO;
[btnExpandCompress setEnabled:YES];
[btnExpandCompress setBackgroundImage:upImage forState:UIControlStateNormal];
}];
}
else
{
[UIView animateWithDuration:0.7 animations:^{
CGRect frame = animatedTable.frame;
frame.origin.y -= animatedTable.frame.size.height - 30;
animatedTable.frame = frame;
} completion:^(BOOL finished) {
showingTable = YES;
[btnExpandCompress setEnabled:YES];
[btnExpandCompress setBackgroundImage:downImage forState:UIControlStateNormal];
}];
}
As can be seen above all I do is change the y component of the frame. Originally the frame of the UITableView has a y component of 583 which is mentioned in the original constraint warning <NSIBPrototypingLayoutConstraint:0x170a95db0 'IB auto generated at build time for view with fixed frame' V:|-(538)-[UITableView:0x140330c00] (Names: '|':UIView:0x170199640 )>. I don't set any additional constraints for the UITableView, just drag it from the object library and move it to its initial minimized position. I am guessing that by changing the frames y component I'm breaking a fixed constraint that is getting set by default. I hope this additional information helps. How can I fix this?

Answer 1

There is problem with your tableview
You have set multiple values for height of tableview
constraint -538 height tableview.
As you have set fixed height for tableview
If you are setting tableview according to navigation bar, means under
Navigation bar, it should be 504 instead of .
If you have only one TableView you can remove all the contraints an
pin that to 0,0,0,0 .
else you have to show a screenshot of your view controller along with constraints
Thanks