The difference between Uinavigationitem and Uitabbaritem

First, Uinavigationitem

1> How to get there

Self-Navigationitem //self refers to the controller

2> Role

Can be used to set the contents of the navigation bar at the top of the current controller

Set content in the middle of the navigation bar

Self. Navigationitem.title

Self. Navigationitem.titleview

Second, Uibarbuttonitem

1> Where to use

Set the contents of the upper-left corner of the navigation bar

Self. Navigationitem.leftbarbuttonitem

Set the contents of the upper right corner of the navigation bar

Self. Navigationitem.rightbarbuttonitem

2> Role

Equivalent to a button

Third, Uitabbaritem

1> How to get there

Self-Tabbaritem //self refers to the controller

2> Role

Can be used to set the contents of the tab label for the current controller

Title of the label

Self. Tabbaritem.title

Icon for the label

Self. Tabbaritem.image

Selected icon for the label

Self. Tabbaritem.selectdimage

Iv. Uinavigationbar

1. navigation bar at the top of the Controller (UI controls)

2. Uinavigationbar What is shown above, depending on the Navigationitem property of the current controller

3. Uinavigationbar is view, Navigationitem is model

4. provide the displayed data to Uinavigationbar by Navigationitem

Wu, Uitabbar

1. uitabbarcontroller tab strip at bottom

Liu, Uitabbarbutton

1. each label on the bottom of the Uitabbar

2. what is displayed in each Uitabbarbutton, depending on the Tabbaritem property of the current controller

3. Uitabbarbutton is view, Tabbaritem is model

4. provide the displayed data to Uitabbarbutton by Tabbaritem

Finally, put a picture to illustrate the use of the two ways:

The difference between Uinavigationitem and Uitabbaritem