iphone - 从其他 View Controller 更改 UIView(在 Nib 内)背景

Question

有人知道如何从另一个 View Controller 更改 Nib 内的 View 吗？我有一个从 nib 文件中的 View 到 View 类文件的导出，并且我有 @synthesize View 类 .m 文件。然后我 #import "InfoView.h" (这是 View 类) View 到 View Controller ，最后我:

    InfoView *infoView; 
    if (infoView == nil) 
    { 
    NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"infoView" owner:self options:nil]; 
    infoView = [nib objectAtIndex:0]; 
    } 

infoView.contentView.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1];" 

但我无法更改背景。

有没有人试过做这样的事情？感谢您的任何意见，谢谢!

编辑:已解决 UIColor 问题，但这不是问题所在。

Answer 1

试试这段代码，我已经为您制作了演示应用程序。创建文件 CustomView.h

#import <UIKit/UIKit.h>

@interface CustomView : UIView

@property (nonatomic, strong) IBOutlet UILabel *titleLbl;

@end

CustomView.m. If you are using XIB

#import "CustomView.h"

@implementation CustomView

@synthesize titleLbl = _titleLbl;

- (id)initWithCoder:(NSCoder *)aDecoder
{
    if(self = [super initWithCoder:aDecoder])
    {
        NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:@"CustomView" owner:self options:nil];
        UIView *theEditView = [nibObjects objectAtIndex:0];
        theEditView.frame = self.bounds;
        [self addSubview: theEditView];
        theEditView = nil;
    }


    return self;
}

Set fileOwner of CustomView.XIB is CustomView. and connect outlets. Where ever you want to use CustomView take a UIView object in your XIB, and rename UIView class with CustomView. Create an IBOutlet in your .h file and connect it with CustomView object in XIB. Now do this:

self.customViewObj.backgroundColor = [UIColor redColor];
self.customViewObj.titleLbl.text = @"Prateek";

在您的情况下，您的 customview 对象未创建。如果你打印你的对象，它会显示你 nil。