Step One: Create an empty project
Step two creates two forms
Step Three create the Tab Bar Controller form
Create the window. xib file, add a Tab Bar Controller Window, and configure the Tab Bar Item.
Configure the Pad Bar Controller. There are two main configurations:
Step Five: Create the relationship between Tab Bar Controller and Appdelegate and create outlet (mainly by setting File's owner)
Step Six: display the form in AppDelagete
The following is the running source code: files.cnblogs.com/macroxu-1982/fivepicker.zip