public static int search(int[] a, int target) {
for (int i = 0; i < a.length; i++) {
if (a[i] == target) {
return i;
}
}
return -1;
}
当前错误是“编辑器是占位符”,用于obj_LoadView = LoadView(frame:&lt; #CGRect#&gt;)。我知道我需要为CGRect添加一些东西,但不确定是什么。任何帮助表示赞赏,谢谢!
答案 0 :(得分:2)
当您开始输入时,Xcode会为您自动填写语句。如果您不更改自动完成的参数,则会出现该错误。
问题是这一行:
obj_LoadView = LoadView(frame: <#CGRect#>)
<#CGRect#>
需要使用实际的CGRect而不是占位符进行更改。
将CGRect设置为您想要新视图的大小:
obj_LoadView = LoadView(frame: CGRect(x: 0.0, y: 0.0, width: 400.0, height: 400))
这将使视图的框架为400x400点。
如果你想让视图成为视图的完整大小,你可以这样做:
obj_LoadView = LoadView(frame: view.frame)
答案 1 :(得分:1)
我个人喜欢创建自己的activityIndicatorView
class LoadingView: UIView {
private var activityIndicatorView: UIActivityIndicatorView {
let view = UIActivityIndicatorView(activityIndicatorStyle: .white)
view.startAnimating()
view.center = self.center
return view
}
private var isPresenting: Bool = false
override init(frame: CGRect) {
super.init(frame: frame)
self.backgroundColor = .black
self.alpha = 0.0
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func present() {
guard let window = UIApplication.shared.keyWindow else { return }
window.addSubview(self)
fadeIn()
}
func dismiss() {
guard isPresenting == true else { return }
fadeOut()
}
private func fadeIn() {
UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseInOut, animations: {
self.alpha = 0.5
}) { (bool: Bool) in
self.addSubview(self.activityIndicatorView)
self.isPresenting = true
}
}
private func fadeOut() {
UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseInOut, animations: {
self.alpha = 0.0
}) { (bool: Bool) in
self.removeFromSuperview()
self.isPresenting = false
}
}
}
&#13;