Add subview from a xib or another scene with storyboard

I figured out a way to do it.Described as following:

1. Create a .xib file. For example: MyView.xib
2. Create a objective-c class. For example: MyViewClass.h and MyViewClass.m
3. Set the .xib File's Owner to the class.
4. Add a UIView element on the storyboard and set the custom class to the objective-c class name (MyViewClass).

5. The key-point is to override the initWithCoder method in the object-c class.

   - (id)initWithCoder:(NSCoder *)aDecoder {    if ((self = [super initWithCoder:aDecoder])) {        [self addSubview:[[[NSBundle mainBundle] loadNibNamed:@"MyView" owner:self options:nil] objectAtIndex:0]];    }    return self;}

The idea is the custom class is loaded by the storyboard and initWithCode will be called.The index 0 is the root view in the .xib interface builder.

It's kind of tricky but it works.

In storyboard, drag and drop a view controller. The view controller come with a main view. Select that main view by clicking outside of the added view controller and then clicking in the center of it. Now, just drag a uiview or whatever into that main view just like you did with IB.