? 最近在用xib做view的autolayout時(shí)，遇到了view的大小不能改變的問題萤厅，后來經(jīng)過查資料橄抹，應(yīng)該是沒有配置view的約束問題。
autolayout - Reuse a uiview xib in storyboard - Stack Overflow
Works in Xcode 6.3.1
Create a new UIView named 'ReuseableView'
File > New > File > Source > Cocoa Touch Class > UIView
Create a matching xib file named 'ReuseableView'
File > New > File > User Interface > View
Set the file owner of the of the xib
select the xib
select file's owner
set custom class to 'ReusableView' in the Identity Inspector.
Note: Do not set the custom class of the view on the xib. Only the File Owner!
Make an outlet from the view in the ReuseableView.xib to your ReuseableView.h interface
Open Assistant Editor
Control + Drag from the view to your interface
Add initWithCoder implementation to load view and add as a subview.
- (id)initWithCoder:(NSCoder *)aDecoder{
self = [super initWithCoder:aDecoder];
if (self) {
// 1. load the interface
[[NSBundle mainBundle] loadNibNamed:NSStringFromClass([self class]) owner:self options:nil];
// 2. add as subview
[self addSubview:self.view];
// 3. allow for autolayout
[self.view setTranslatesAutoresizingMaskIntoConstraints:NO];
// 4. add constraints to span entire view
[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[view]|" options:0 metrics:nil views:@{@"view":self.view}]];
[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[view]|" options:0 metrics:nil views:@{@"view":self.view}]];
}
return self;
}
Test your reuseable view in a storyboard
Open your storyboard
Add a view
Set that view's Custom Class
Run and observe!
