Xib的加载

• 方法1

NSArray *views = [[NSBundle mainBundle] loadNibNamed:@"xib文件名" owner:nil options:nil]

• 方法2

UINib *nib = [UINib nibWithNibName:@"xib文件名" bundle:nil];
NSArray *views = [nib instantiateWithOwner:nil options:nil];