Ios 用XIB实例化视图
我有一个按照以下指南()创建的xib,但我有一个问题: 如何从代码实例化if 那么我应该在viewDidLoad中写什么而不是Ios 用XIB实例化视图,ios,objective-c,Ios,Objective C,我有一个按照以下指南()创建的xib,但我有一个问题: 如何从代码实例化if 那么我应该在viewDidLoad中写什么而不是 self.myView = [[MyView alloc] initWithFrame:self.view.bounds]; 我知道如何用故事板来实例化它,但我不知道如何从代码中实现它。谢谢 您必须添加-loadNibNamed方法,如下所示: 将以下代码添加到\u视图init方法中: NSArray *subviewArray = [[NSBundle mainBu
self.myView = [[MyView alloc] initWithFrame:self.view.bounds];
我知道如何用故事板来实例化它,但我不知道如何从代码中实现它。谢谢 您必须添加
-loadNibNamed
方法,如下所示:
将以下代码添加到\u视图init
方法中:
NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"Your_nib_name" owner:self options:nil];
UIView *mainView = [subviewArray objectAtIndex:0];
[self addSubview:mainView];
请参考以下两个问题:
编辑:
在ViewController.m
文件中
#import CustomView.h <--- //import your_customView.h file
- (void)viewDidLoad
{
[super viewDidLoad];
CustomView *customView = [[CustomView alloc]init];
[self.view addSubview:customView];
}
#import CustomView.h以下是我使用的Swift 4扩展:
public extension UIView {
// Load the view for this class from a XIB file
public func viewFromNibForClass(index : Int = 0) -> UIView {
let bundle = Bundle(for: type(of: self))
let nib = UINib(nibName: String(describing: type(of: self)), bundle: bundle)
return nib.instantiate(withOwner: self, options: nil)[index] as! UIView
}
// Load the view for this class from a XIB file and add it
public func initViewFromNib() {
let view = viewFromNibForClass()
addSubview(view)
//view.frame = bounds // No Autolayout
view.constrainToFillSuperview() // Autolayout helper
}
}
像这样使用它:
override init(frame: CGRect) {
super.init(frame: frame)
initViewFromNib()
}
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
initViewFromNib()
}
斯威夫特4
extension UIView {
private class func _makeFromNib<T: UIView>() -> T {
let nibName = NSStringFromClass(T.self).components(separatedBy: ".").last ?? ""
let bundle = Bundle(for: T.self)
let nib = UINib(nibName: nibName, bundle: bundle)
let view = nib.instantiate(withOwner: T.self, options: nil)[0]
return view as! T
}
class func makeFromNib() -> Self {
return _makeFromNib()
}
}
是的,很清楚。但是我应该在ViewController中做什么才能从nib添加视图?什么是[CustomView CustomView]
?CustomView
将是您初始化视图的CustomView
类的方法。i、 在其中加载了视图的nib文件。如果您是在-init
中编写代码,那么只需编写[[CustomView alloc]init]代码>
let myView = MyView.makeFromNib()
let profileView = ProfileView.makeFromNib()