ios 以编程方式更改 UIView 大小
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Changing UIView size programmatically
提问by onivi
I've a UIView, I want to change the size when user touches a button.
我有一个 UIView，我想在用户触摸按钮时更改大小。
CGRect newFrame = self.myview.frame;
newFrame.size.width = 200;
newFrame.size.height = 200;
[self setFrame:newFrame];
CGRect newFrame = self.searchField.frame;
newFrame.size.width = 200;
newFrame.size.height = 200;
self.searchField.frame=newFrame;
None of them works, don't change anything. I want to set fixed width and height to UIView.
它们都不起作用，不要改变任何东西。我想为 UIView 设置固定的宽度和高度。
回答by Tim Bodeit
If I understand correctly, you want to change the size of self.myview. However at no point you are setting the frame of it. Instead you are trying to call sendFrame:on the view controller and some search field. I'm surprised, that the former one didn't give you a compiler error.
如果我理解正确，您想更改self.myview. 但是，您绝不会设置它的框架。相反，您正在尝试调用sendFrame:视图控制器和一些搜索字段。我很惊讶，前一个没有给你一个编译器错误。
Objective C
目标 C
CGRect newFrame = self.myview.frame;
newFrame.size.width = 200;
newFrame.size.height = 200;
[self.myview setFrame:newFrame];
Swift
迅速
var newFrame = myview.frame
newFrame.size.width = 200
newFrame.size.height = 200
myview.frame = newFrame
回答by Filoux
In my case, I had a constraint on the width of my view, so I couldn't change the width like Tim said.
就我而言，我对视图的宽度有限制，因此我无法像 Tim 所说的那样更改宽度。
What I've done : I created an outlet on my constaint, called myviewWidthConstraintfor example. Then I used this outlet to change the width of my view like this :
我所做的：我在我的 constaint 上创建了一个出口，myviewWidthConstraint例如调用。然后我使用这个插座来改变我的视图宽度，如下所示：
mycell.myviewWidthConstraint.constant = newSize;
回答by J-Dizzle
Size fields are read-only, just make a new one -
大小字段是只读的，只需新建一个 -
//Set height
let f = view.frame; //Grab current
view.frame = CGRect(x: f.origin.x, y: f.origin.y, width: f.width, height: 200);
回答by lbsweek
view.frame = newframe;
or
或者
view.center = newcenter;
