IOS 8 keyboard how to swap between the decimal and numeric keyboard + shift key -

i busy making ios 8 keyboard , need help.

i have made basic keyboard , works fine have bumps , need slove them. wrote code in swift(keep in mind i'm new swift).

i need following:

1. to swap keyboard decimal(the normal 1 letters) numeric(the number/symbol one) wrote code (it hides keyboards respectively , shows them again) don't know how make run when tap "123" button.

2. when type key eg. "a" prints out how appears on keyboard how can make automatically lowercase , implement shift button give me capital letters?

some solve appreciated.

here code have far:

import uikit  class keyboardviewcontroller: uiinputviewcontroller {  @iboutlet var nextkeyboardbutton: uibutton!  var allbuttons = [uibutton]()  override func updateviewconstraints() {     super.updateviewconstraints()      // add custom view sizing constraints here }  override func viewdidload() {      //normal keyboard start     super.viewdidload()      let buttontitles1 = ["q", "w", "e", "r", "t", "y", "u", "i", "o", "p"]     let buttontitles2 = ["a", "s", "d", "f", "g", "h", "j", "k", "l"]     let buttontitles3 = ["⬆︎", "z", "x", "c", "v", "b", "n", "m", "⬅︎"]     let buttontitles4 = ["123","🌐","⎯", "return"]      //⚒      var row1 = createrowofbuttons(buttontitles1)     var row2 = createrowofbuttons(buttontitles2)     var row3 = createrowofbuttons(buttontitles3)     var row4 = createrowofbuttons(buttontitles4)      self.view.addsubview(row1)     self.view.addsubview(row2)     self.view.addsubview(row3)     self.view.addsubview(row4)      row1.settranslatesautoresizingmaskintoconstraints(false)     row2.settranslatesautoresizingmaskintoconstraints(false)     row3.settranslatesautoresizingmaskintoconstraints(false)     row4.settranslatesautoresizingmaskintoconstraints(false)      addconstraintstoinputview(self.view, rowviews: [row1, row2, row3, row4])      applycurrenttheme()     //normal keyboard end            //change numeric keyboard start      let buttonsnum1firstrow = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "0"]     let buttonsnum2firstrow = ["-", "/", ":", ";", "(", ")", "$", "&", "@", "\""]     let buttonsnum3firstrow = ["#+=", ".", ",", "?", "!", "'", "7", "⬅︎"]     let buttonsnum4firstrow = ["abc","⎯","return"]      //define rows class variable instead of function variable      var srow1:uiview!     var srow2:uiview!     var srow3:uiview!     var srow4:uiview!     var srow1num:uiview!      //hide below:     func didtapchangetonumbersbutton(sender: anyobject?)     {         srow1.hidden = true          srow1num.hidden = false      }     //change numeric keyboard end   }  func createrowofbuttons(buttontitles: [nsstring]) -> uiview {      var buttons = [uibutton]()     var keyboardrowview = uiview(frame: cgrectmake(0, 0, 320, 50))      buttontitle in buttontitles     {          let button = createbuttonwithtitle(buttontitle)         buttons.append(button)         keyboardrowview.addsubview(button)     }      allbuttons += buttons     addindividualbuttonconstraints(buttons, mainview: keyboardrowview)      return keyboardrowview }  override func didreceivememorywarning() {     super.didreceivememorywarning()     // dispose of resources can recreated }  override func textwillchange(textinput: uitextinput) {     // app change document's contents. perform preparation here. }  override func textdidchange(textinput: uitextinput) {     // app has changed document's contents, document context has been updated.      var textcolor: uicolor     var proxy = self.textdocumentproxy uitextdocumentproxy     if proxy.keyboardappearance == uikeyboardappearance.dark     {         textcolor = uicolor.whitecolor()     }      else     {         textcolor = uicolor.blackcolor()     } }    func createbuttonwithtitle(title: string) -> uibutton {      let button = uibutton.buttonwithtype(.system) uibutton     button.frame = cgrectmake(0, 0, 20, 20)     button.settitle(title, forstate: .normal)     button.sizetofit()     button.titlelabel?.font = uifont.systemfontofsize(10)     button.settranslatesautoresizingmaskintoconstraints(false)     button.backgroundcolor = uicolor(white: 1.0, alpha: 1.0)     button.settitlecolor(uicolor.darkgraycolor(), forstate: .normal)      button.addtarget(self, action: "didtapbutton:", forcontrolevents: .touchupinside)      return button }   func didtapbutton(sender: anyobject?) {      let button = sender uibutton     var proxy = textdocumentproxy uitextdocumentproxy       let capon = false;     let capslast = false;     let capslock = false;     let spacelast = false;        if let title = button.titleforstate(.normal)     {           switch title         {          case "🌐" :             self.advancetonextinputmode()           case "." :             let capon = true             proxy.inserttext(".")             let spacelast = false             let capslast = false       //caps idea      //this caps lock code experimental , doesn't work, idea playing         case "⬆︎" :             let capon = !capon             if capslock             {                 let capon = true                 let capslock = false                 let capslast = false             }              let capslast = true        //caps idea          case "⬅︎" :             proxy.deletebackward()             let spacelast = false             let capslast = false          case "return" :             proxy.inserttext("\n")             let spacelast = false             let capslast = false          case "⎯" :             if spacelast             {                 proxy.deletebackward()                 proxy.inserttext(". ")                 let spacelast = false                 let capon = true             }              else             {                 proxy.inserttext(" ")                 let spacelast = true             }             let capslast = false            default :             proxy.inserttext(title)           }     } }    func applycurrenttheme() {      var theme = claptontheme()      theme.applythemetoview(self.view)      theme.applythemetokeys(allbuttons) }  func addindividualbuttonconstraints(buttons: [uibutton], mainview: uiview) {      (index, button) in enumerate(buttons)     {          var topconstraint = nslayoutconstraint(item: button, attribute: .top, relatedby: .equal, toitem: mainview, attribute: .top, multiplier: 1.0, constant: 1)          var bottomconstraint = nslayoutconstraint(item: button, attribute: .bottom, relatedby: .equal, toitem: mainview, attribute: .bottom, multiplier: 1.0, constant: -1)          var rightconstraint : nslayoutconstraint!          if index == buttons.count - 1         {              rightconstraint = nslayoutconstraint(item: button, attribute: .right, relatedby: .equal, toitem: mainview, attribute: .right, multiplier: 1.0, constant: -1)          }          else         {              let nextbutton = buttons[index+1]             rightconstraint = nslayoutconstraint(item: button, attribute: .right, relatedby: .equal, toitem: nextbutton, attribute: .left, multiplier: 1.0, constant: -1)         }           var leftconstraint : nslayoutconstraint!          if index == 0 {              leftconstraint = nslayoutconstraint(item: button, attribute: .left, relatedby: .equal, toitem: mainview, attribute: .left, multiplier: 1.0, constant: 1)          }          else         {              let prevtbutton = buttons[index-1]             leftconstraint = nslayoutconstraint(item: button, attribute: .left, relatedby: .equal, toitem: prevtbutton, attribute: .right, multiplier: 1.0, constant: 1)              let firstbutton = buttons[0]             var widthconstraint = nslayoutconstraint(item: firstbutton, attribute: .width, relatedby: .equal, toitem: button, attribute: .width, multiplier: 1.0, constant: 0)              widthconstraint.priority = 800             mainview.addconstraint(widthconstraint)         }          mainview.addconstraints([topconstraint, bottomconstraint, rightconstraint, leftconstraint])     } }   func addconstraintstoinputview(inputview: uiview, rowviews: [uiview]) {      (index, rowview) in enumerate(rowviews) {         var rightsideconstraint = nslayoutconstraint(item: rowview, attribute: .right, relatedby: .equal, toitem: inputview, attribute: .right, multiplier: 1.0, constant: -1)          var leftconstraint = nslayoutconstraint(item: rowview, attribute: .left, relatedby: .equal, toitem: inputview, attribute: .left, multiplier: 1.0, constant: 1)          inputview.addconstraints([leftconstraint, rightsideconstraint])          var topconstraint: nslayoutconstraint          if index == 0         {             topconstraint = nslayoutconstraint(item: rowview, attribute: .top, relatedby: .equal, toitem: inputview, attribute: .top, multiplier: 1.0, constant: 0)          }          else         {              let prevrow = rowviews[index-1]             topconstraint = nslayoutconstraint(item: rowview, attribute: .top, relatedby: .equal, toitem: prevrow, attribute: .bottom, multiplier: 1.0, constant: 0)              let firstrow = rowviews[0]             var heightconstraint = nslayoutconstraint(item: firstrow, attribute: .height, relatedby: .equal, toitem: rowview, attribute: .height, multiplier: 1.0, constant: 0)              heightconstraint.priority = 800             inputview.addconstraint(heightconstraint)         }         inputview.addconstraint(topconstraint)          var bottomconstraint: nslayoutconstraint          if index == rowviews.count - 1         {             bottomconstraint = nslayoutconstraint(item: rowview, attribute: .bottom, relatedby: .equal, toitem: inputview, attribute: .bottom, multiplier: 1.0, constant: 0)          }          else         {              let nextrow = rowviews[index+1]             bottomconstraint = nslayoutconstraint(item: rowview, attribute: .bottom, relatedby: .equal, toitem: nextrow, attribute: .top, multiplier: 1.0, constant: 0)         }          inputview.addconstraint(bottomconstraint)     }  } }