如何在Swift的主视图中添加子视图

问题描述

我需要建议如何继续。

如何稍微调暗主视图并显示一些忙碌指示，在某些操作的持续时间内，然后删除调光？

How to slightly dim the main view and display some busy indicator, for the duration of of some action, and then remove the dimming?

用Swift语言。

谢谢！

UPD：在Objective-C I使用早期是这样的：

UPD: In Objective-C I use earlier something like this:

UIView *dimView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
dimView.backgroundColor = [UIColor blackColor];
dimView.alpha = 0.5f;
dimView.tag = 1111;
dimView.userInteractionEnabled = NO;
[self.view addSubview:dimView];

我们如何在Swift中执行此代码？

How this code we can do it in Swift?

推荐答案

操作如下，我已经检查，做工精细在斯威夫特 - iOS设备8

Do as follows, I have checked, Working Fine In Swift - iOS 8

我们都必须初始化用框架查看然后我们必须设置 .alpha 属性以使视图变暗。

We have have to initialize the view with the frame and then we have to set the .alpha property for dim the view.

let testFrame : CGRect = CGRectMake(0,200,320,200)
var testView : UIView = UIView(frame: testFrame)
testView.backgroundColor = UIColor(red: 0.5, green: 0.5, blue: 0.5, alpha: 1.0)
testView.alpha=0.5
self.view.addSubview(testView)

和 .addSubview 将在主视图中添加视图。

And .addSubview will add the view inside the main view.

快乐编码:)

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