iOS starts--ui Uitextfield

Create a text input box

    Uitextfield * TextField = [[Uitextfield alloc]initwithframe:cgrectmake (40 )];

Set Border Style

    Textfield.borderstyle = uitextborderstyleroundedrect;     /*      typedef ns_enum (Nsinteger, Uitextborderstyle) {     uitextborderstylenone, no effect     Uitextborderstyleline, linear border has shadow     Uitextborderstylebezel,     uitextborderstyleroundedrect rounded Rectangle     };      */

Set text-related

    @" 2002 years of the first snowfall " ;     // set font-related    Textfield.font = [Uifont systemfontofsize:];     = [Uicolor greencolor];     // Set Adaptive    Textfield.adjustsfontsizetofitwidth = YES;     // Set Center //     textfield.textalignment = nstextalignmentcenter;

Set prompt

    // Set Prompt    @" Please enter " ;         // set whether to clear start editing //     textfield.clearsonbeginediting = YES;

Set/Cancel First responder

    // Click the input box to make the input box the first    responder // the so-called First responder  is the control that will  be edited to manipulate the touch     [TextField    becomefirstresponder]; // Cancel to be the first responder    [TextField Resignfirstresponder];

Whether the interaction is turned on

    // Cancel interaction is turned    on textfield.userinteractionenabled = YES;

Set the Purge button

    // Set the purge button    Textfield.clearbuttonmode = uitextfieldviewmodealways;     /*      typedef ns_enum (Nsinteger, Uitextfieldviewmode) {     uitextfieldviewmodenever,  never     Uitextfieldviewmodewhileediting,  uitextfieldviewmodeunlessediting when editing     ,  not displayed     when editing Uitextfieldviewmodealways  always show     };      */

Set both left and right view

    //********** The same view cannot be set to both left and right pictures//left ViewUIView * view = [[UIView alloc]initwithframe:cgrectmake (0,0, -, -)]; View.backgroundcolor=[Uicolor Bluecolor]; Textfield.leftview=view; Textfield.leftviewmode=uitextfieldviewmodealways;//Right ViewUIView * View1 = [[UIView alloc]initwithframe:cgrectmake (0,0, -, -)]; Textfield.rightview=View1; View1.backgroundcolor=[Uicolor Greencolor];//textfield.rightviewmode = uitextfieldviewmodealways;

Set keyboard style

//Set Keyboard styleTextfield.keyboardtype =Uikeyboardtypedefault; /*       typedef ns_enum (Nsinteger, Uikeyboardtype) {uikeyboardtypedefault,//Default type for the Curren     T input method. Uikeyboardtypeasciicapable,//displays a keyboard which can enter ASCII characters, NON-ASCII keyboards remain     Active uikeyboardtypenumbersandpunctuation,//Numbers and assorted punctuation.     Uikeyboardtypeurl,//A type optimized for URL entry (shows./. com prominently). Uikeyboardtypenumberpad,//A number pad (0-9).     Suitable for PIN entry.     Uikeyboardtypephonepad,//A phone pad (1-9, *, 0, #, with letters under the numbers).     Uikeyboardtypenamephonepad,//a type optimized for entering a person ' s name or phone number.     Uikeyboardtypeemailaddress,//A type optimized for multiple email address entry (shows space @. prominently).     Uikeyboardtypedecimalpad Ns_enum_available_ios (4_1),//a number pad with A decimal point. UikeyboardtypetWitter Ns_enum_available_ios (5_0),//A type optimized for Twitter text entry (easy access to @ #) Uikeyboardtype Websearch Ns_enum_available_ios (7_0),//A default keyboard type with url-oriented addition (shows space. prominently)          .      Uikeyboardtypealphabet = uikeyboardtypeasciicapable,//Deprecated};*/Textfield.returnkeytype=Uireturnkeydone; /*typedef ns_enum (Nsinteger, Uireturnkeytype) {uireturnkeydefault, Uireturnkeygo, Uireturnkeygoogle, Uireturnkeyjoin, Uireturnkeynext, Uireturnkeyroute, Uireturnkeysearch, Uireturnkeysend, UIReturnKey     Yahoo, Uireturnkeydone, Uireturnkeyemergencycall, Uireturnkeycontinue Ns_enum_available_ios (9_0),}; */

Touch screen Cancel First responder exit edit

// Touch the screen call this method -(void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (uievent *)Event  {    * TextField = (ID) [self.view viewwithtag:1];    [TextField Resignfirstresponder]; //     [Self.view becomefirstresponder];}

Implementing the Uitextfielddelegate Proxy method

#pragmaMark-uitextfielddelegate//Whether you can start editing-(BOOL) textfieldshouldbeginediting: (Uitextfield *) textfield{returnYES;}//return NO to disallow editing.//already started editing- (void) Textfielddidbeginediting: (Uitextfield *) textfield{NSLog (@"already started editing");}//became first responder//Whether you can end the edit yes can no-(BOOL) textfieldshouldendediting: (Uitextfield *) textfield{returnYES;}//return YES to allow editing to stop and to resign first responder status. NO to disallow the editing session to end//has finished editing- (void) Textfielddidendediting: (Uitextfield *) textfield{//You can save a draft hereNSLog (@"has finished editing");}//May is called if forced even if shouldendediting returns NO (e.g. view removed from window) or Endediting:yes called< /c5>-(BOOL) TextField: (Uitextfield *) TextField Shouldchangecharactersinrange: (nsrange) range replacementstring: ( NSString *)string{    returnYES;}//return NO to the change text//triggers this method to return the possibility of clearing-(BOOL) Textfieldshouldclear: (Uitextfield *) textfield{returnNO;}//called when Clear button pressed. Return No. to ignore (no notifications)- (void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (Uievent *)Event{    }//Click Return on the keyboard to perform this method-(BOOL) Textfieldshouldreturn: (Uitextfield *) textfield{returnYES;}//called when ' return ' key pressed. Return No. to ignore.

iOS starts--ui Uitextfield