How can I get Automatically Refresh Views to work?

Question

My custom UIView is not triggering this to run, but other custom views I make trigger it. Does anyone know the reason that this automatic refreshing of views would be triggered? Or Why "Refresh All Views" is greyed out.

Code is in here: https://github.com/HannahCarney/HCRotaryWheel

Answer 1

• Make sure you have IBInspectable properties for your view. (like changing your view color,just to make sure your IBDesignable thing works).

• Make sure you have the code for your customisation in your view .m

file. (in your view draw rect method).

• Make sure you provide the file owner name for your IBDesignable view.(in your storyboarD)

• Make sure you mention IB_DESIGNABLE on your view .h file.

• Finally a qucik clean and build of your storyboard,shall enable the
  option of Refresh All views.

Sample code:

for view.h

#import <UIKit/UIKit.h>

IB_DESIGNABLE


@interface designalble_UIView : UIView

@property (nonatomic) IBInspectable UIColor *startColor;
@property (nonatomic) IBInspectable UIColor *midColor;
@property (nonatomic) IBInspectable UIColor *endColor;
@property (nonatomic) IBInspectable NSInteger borderWidth;
@property (nonatomic) IBInspectable CGFloat cornerRadious;
@property (nonatomic) IBInspectable BOOL isHorizontal;


@end

for view.m

#import "designalble_UIView.h"

@implementation designalble_UIView

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {

        self.startColor     = [UIColor redColor];
        self.midColor       = [UIColor greenColor];
        self.endColor       = [UIColor blueColor];
        self.borderWidth    = 2;
        self.cornerRadious  = 10;
        self.isHorizontal   = NO;

        [self customInit];
    }
    return self;
}

- (id)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    if (self) {
        [self customInit];
    }
    return self;
}


- (void)drawRect:(CGRect)rect {
    [self customInit];
}

- (void)setNeedsLayout {
    [super setNeedsLayout];
    [self setNeedsDisplay];
}


- (void)prepareForInterfaceBuilder {

    [self customInit];
}

- (void)customInit {


    self.layer.cornerRadius = self.cornerRadious;
    self.layer.borderWidth = self.borderWidth;

    if (self.cornerRadious > 0) {
        self.layer.masksToBounds = YES;
    }


    CAGradientLayer *gradient = [CAGradientLayer layer];
    gradient.frame = self.bounds;

    gradient.colors = [NSArray arrayWithObjects:(id)[self.startColor CGColor],(id)[self.midColor CGColor], (id)[self.endColor CGColor], nil];
    gradient.endPoint = (self.isHorizontal) ? CGPointMake(1, 0) : CGPointMake(0, 1);
    [self.layer insertSublayer:gradient atIndex:0];

}

Answer 2

I solved this because I had put IB_DESIGNABLE in the wrong spot in my code:

I had a protocol at the top of my view and previously it looked like

IB_DESIGNABLE

@protocol RotaryProtocol <NSObject>

- (void) wheelDidChangeValue:(int)currentSector;
@end

@interface HCRotaryWheel : UIView

@property (weak) id <RotaryProtocol> delegate;
@property (nonatomic, strong) IBInspectable UIColor* background;

@end

To fix this I had to move IB_DESIGNABLE below protocol

@protocol RotaryProtocol <NSObject>

- (void) wheelDidChangeValue:(int)currentSector;
@end

IB_DESIGNABLE

@interface HCRotaryWheel : UIView

@property (weak) id <RotaryProtocol> delegate;
@property (nonatomic, strong) IBInspectable UIColor* background;

@end

Now my views refresh!!