ios mdm settings

defined, I set command + control + L. 2) Method Two 1> finder–> Application –> Utility –> Keychain Access, or click the magnifying glass button in the upper right corner of your MAC screen to search for "keychain"; 2> Click "Keychain Access" on the top menu bar of your Mac and select "Preferences"; 3> tick the first item "Show keychain status in menu bar"; 4> Mac top menu bar will be more than a lock icon, want to lock the screen when you cli

Add Return button -(void) backbtn{ uibutton *backbtn=[[uibutton alloc]initwithframe:cgrectmake (0, A,)]; [Backbtn settitle:@ "return" forstate:uicontrolstatenormal]; Backbtn.titlelabel.font=[uifont Systemfontofsize:12]; Backbtn.imageedgeinsets=uiedgeinsetsmake (2,2,2,2); [Backbtn setimage:[uiimage imagenamed:@ "Fanhui"] forstate:uicontrolstatenormal]; [Backbtn addtarget:self Action: @selector (Backto) Forcontrolevents:uicontroleventtouchdown]; Uibarbuttonitem *leftbtn=[[uibarbutton