Xcode self-lead file modification and cache emptying

1.Xcode path from the lead file

/applications/xcode.app: Right-click application xcode-> Display Package Contents

/applications/xcode.app/contents/developer/platforms/iphonesimulator.platform/developer/sdks/ Iphonesimulator7.1.sdk/system/library/frameworks/uikit.framework/headers

2. After modifying the system self-lead file, Xcode will error

Solution: Delete the cache of the following folder (Star is the user name of the computer)

Resource Library: Library

/users/star/Resource Library/developer/xcode/deriveddata

Or

/users/star/library/developer/xcode/deriveddata

3. To encapsulate a custom view using Xib

1> Create a custom view that inherits UIView, assuming the class name is called (Mjappview)

2> Create a new Mjappview.xib file to describe the structure inside the Mjappview

3> Modifying the type of UIView is Mjappview true Type

4> the inner child control with the Mjappview property connection

5> Mjappview provides a model property

6> overrides the set method of the Model property, because the model data passed in the set method can be obtained

7> The model data, setting the data to the corresponding sub-controls separately

8> Add: Provides a class method to create a mjappview that masks the code that reads the Xib file.

Xcode self-lead file modification and cache emptying