Autolayout-constraints Warnung "Wird versuchen sich zu erholen von breaking constraint"

Ich bin einige Besonderheiten Einschränkungen für das iPhone 4, wenn die app lief auf diesem Gerät. Alles toll Aussehen in Bezug auf die Ausrichtung und alles.

Aber, ich erhalte eine Fehlermeldung für alle meine Zwänge, die versuchen, Sie zu retten, indem Sie brechen die Zwänge.

Diese Methode wird call-in meinem viewDidLoad, wenn es erkennt, wenn Ihr ein iPhone 4

- (void) addConstraints {

    //removing automatic system constraints
    [self.view removeConstraints:self.view.constraints];
    [self.view setTranslatesAutoresizingMaskIntoConstraints:NO];


    NSDictionary *views = NSDictionaryOfVariableBindings(appBackground, myCustomer, myItemDetails, myItemQuantity, myItemPrice, myNext, myBtn); //UIImageView, UITextField, UIButton

    for (UIView *view in [views allValues]) {
        view.translatesAutoresizingMaskIntoConstraints = NO;
    }

    NSDictionary *metrics = @{@"width": @210.0, @"height": @42.0, @"verticalSpacing": @34};

    NSArray *constraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[appBackground]|"
                                                                   options:0
                                                                   metrics:nil
                                                                     views:views];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[appBackground]|"
                                                                   options:0
                                                                   metrics:nil
                                                                     views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-(85)-[myCustomer(==height)]-(verticalSpacing)-[myItemDetails(==height)]-(verticalSpacing)-[myItemQuantity(==height)]-(verticalSpacing)-[myItemPrice(==height)]-(18)-[myNext(==35)]-(71.5)-[myBtn(==50)]-(7.5)-|"
                                                                    options:0
                                                                    metrics:metrics
                                                                      views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-50-[myCustomer(==width)]-|"
                                                                                                     options:0
                                                                                                     metrics:metrics
                                                                                                       views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-50-[myItemDetails(==width)]-|"
                                                                                                     options:0
                                                                                                     metrics:metrics
                                                                                                       views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-50-[myItemQuantity(==width)]-|"
                                                                                                     options:0
                                                                                                     metrics:metrics
                                                                                                       views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-50-[myItemPrice(==width)]-|"
                                                                                                     options:0
                                                                                                     metrics:metrics
                                                                                                       views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-78-[myNext(==173)]-|"
                                                                                                     options:0
                                                                                                     metrics:metrics
                                                                                                       views:views]];

    constraints = [constraints arrayByAddingObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-11.5-[myBtn(==54)]-|"
                                                                                                     options:0
                                                                                                     metrics:metrics
                                                                                                       views:views]];

    [self.view addConstraints:constraints];

}

Fehler!

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) 
(
    "<NSLayoutConstraint:0xb8282f0 H:|-(50)-[UITextField:0xb823fc0]   (Names: '|':UIView:0xb82f360 )>",
    "<NSLayoutConstraint:0xb828320 H:[UITextField:0xb823fc0(210)]>",
    "<NSLayoutConstraint:0xb82be10 H:[UITextField:0xb823fc0]-(NSSpace(20))-|   (Names: '|':UIView:0xb82f360 )>",
    "<NSLayoutConstraint:0xb82d3d0 H:|-(78)-[UIButton:0xb82ad50]   (Names: '|':UIView:0xb82f360 )>",
    "<NSLayoutConstraint:0xb82d420 H:[UIButton:0xb82ad50(173)]>",
    "<NSLayoutConstraint:0xb82d450 H:[UIButton:0xb82ad50]-(NSSpace(20))-|   (Names: '|':UIView:0xb82f360 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0xb82d450 H:[UIButton:0xb82ad50]-(NSSpace(20))-|   (Names: '|':UIView:0xb82f360 )>

Break on objc_exception_throw to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2014-08-03 14:03:29.239 iReceipt[2886:607] 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) 
(
    "<NSLayoutConstraint:0xb8282f0 H:|-(50)-[UITextField:0xb823fc0]   (Names: '|':UIView:0xb82f360 )>",
    "<NSLayoutConstraint:0xb828320 H:[UITextField:0xb823fc0(210)]>",
    "<NSLayoutConstraint:0xb82be10 H:[UITextField:0xb823fc0]-(NSSpace(20))-|   (Names: '|':UIView:0xb82f360 )>",
    "<NSLayoutConstraint:0xb82d480 H:|-(11.5)-[UIButton:0xb820120]   (Names: '|':UIView:0xb82f360 )>",
    "<NSLayoutConstraint:0xb82e390 H:[UIButton:0xb820120(54)]>",
    "<NSLayoutConstraint:0xb82e3c0 H:[UIButton:0xb820120]-(NSSpace(20))-|   (Names: '|':UIView:0xb82f360 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0xb82e3c0 H:[UIButton:0xb820120]-(NSSpace(20))-|   (Names: '|':UIView:0xb82f360 )>

Bitte lassen Sie mich wissen, wenn Sie Jungs benötigen Sie mehr Informationen..

InformationsquelleAutor valbu17 | 2014-08-03
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