Disable analog keyboard on iPhone

---------------------- The interface writing method directly in the code without IB implementation --------------

Uitextview * _ textview;

Use the following two statements to close the simulated keyboard.

[_ Textviewbecomefirstresponder];

[_ Textviewresignfirstresponder];

Note that _ textview can only be of the uitextview type.

--------------------- Method implemented using interface builder ---------------

1. Add in the Controller. h file

-(Ibaction) backgroundtap :( ID) sender;

2. Add the following in the Controller. M file:

-(Ibaction) backgroundtap :( ID) sender

{

[Namefieldresignfirstresponder];

[Numberfieldresignfirstresponder];

}

3. Open the sib file and click the view icon. Then press command + 4 to modify the uiview
Uicontrol

4. Press command + 2 to bring up the connection checker, link file's owner with the touch down event, and select backgroundtop: function.