062 set a clear button in the text input box

The effect is as follows:

ViewController.h

1 #import <UIKit/UIKit.h>23@interface Viewcontroller:uiviewcontroller <UITextFieldDelegate>4 @property (Strong, Nonatomic) Nsmutablearray *Marrtextfield; 5 6 @end

Viewcontroller.m

1 #import "ViewController.h"2 3 @interfaceViewcontroller ()4- (void) Layoutui;5-(Uitextfield *) Newtextfield: (Uitextfieldviewmode) Clearbuttonmode frame: (cgrect) rect;6- (void) Hidekeyboard: (ID) sender;7 @end8 9 @implementationViewcontrollerTen- (void) Viewdidload { One [Super Viewdidload]; A      - [self layoutui]; -      theUITapGestureRecognizer *tapgesturerecognizer =[[UITapGestureRecognizer alloc] initwithtarget:self action: @selector (Hidekeyboard:)]; - [Self.view Addgesturerecognizer:tapgesturerecognizer]; - } -  +- (void) didreceivememorywarning { - [Super didreceivememorywarning]; +     //Dispose of any resources the can be recreated. A } at  - #pragmaMark-private Methods - /** - * Hide Keyboard -  * - * @param sender Event Trigger in  */ -- (void) Hidekeyboard: (ID) Sender { toNSLog (@"Tap Gesture recognizer, remove some controls as the first responder"); +      for(Uitextfield *TXTFinch_marrtextfield) { - [TXTF Resignfirstresponder]; the     } * } $ Panax Notoginseng- (void) Layoutui { -_marrtextfield = [[Nsmutablearray alloc] Initwithcapacity:4]; the      +CGRect recttemp = CGRectMake ( -, +, the, +); AUitextfield *txtftemp =[self newtextfield:uitextfieldviewmodenever frame:recttemp]; the [Self.view addsubview:txtftemp]; + [_marrtextfield addobject:txtftemp]; -      $RECTTEMP.ORIGIN.Y + = -; $Txtftemp =[self newtextfield:uitextfieldviewmodewhileediting frame:recttemp]; - [Self.view addsubview:txtftemp]; - [_marrtextfield addobject:txtftemp]; the      -RECTTEMP.ORIGIN.Y + = -;WuyiTxtftemp =[self newtextfield:uitextfieldviewmodeunlessediting frame:recttemp]; the [Self.view addsubview:txtftemp]; - [_marrtextfield addobject:txtftemp]; Wu      -RECTTEMP.ORIGIN.Y + = -; AboutTxtftemp =[self newtextfield:uitextfieldviewmodealways frame:recttemp]; $ [Self.view addsubview:txtftemp]; - [_marrtextfield addobject:txtftemp]; - } -  A-(Uitextfield *) Newtextfield: (Uitextfieldviewmode) Clearbuttonmode frame: (cgrect) rect { +Uitextfield *txtfmessage =[[Uitextfield alloc] initwithframe:rect]; theTxtfmessage.textalignment =Nstextalignmentleft; -Txtfmessage.textcolor = [Uicolor colorwithred:0.433Green0.829Blue1.000Alpha1.000]; $Txtfmessage.borderstyle =Uitextborderstyleroundedrect; the      theTxtfmessage.Delegate=Self ; theTxtfmessage.clearbuttonmode =Clearbuttonmode; the     Switch(clearbuttonmode) { -          CaseUitextfieldviewmodenever: inTxtfmessage.text =@"Uitextfieldviewmodenever";//do not show empty button; default value the              Break; the          Caseuitextfieldviewmodewhileediting: AboutTxtfmessage.text =@"uitextfieldviewmodewhileediting";//text content is not empty, and the empty button is displayed when editing state (that is, getting focus) the              Break; the          Caseuitextfieldviewmodeunlessediting: theTxtfmessage.text =@"uitextfieldviewmodeunlessediting";//The empty button appears when the text content is not empty and is not in the edit state (that is, it loses focus) +              Break; -          Caseuitextfieldviewmodealways: theTxtfmessage.text =@"uitextfieldviewmodealways";//when text content is not empty, get focus and lose focus show empty buttonBayi              Break; the     } the     returnTxtfmessage; - } -  the #pragmaMark-textfield the-(BOOL) Textfieldshouldclear: (Uitextfield *) TextField { theNSLog (@"textfieldshouldclear:%@", Textfield.text);//The Record emptying button triggers the emptying of the text content; For example: Uitextfieldviewmodewhileediting the     returnYES; - } the  the @end

062 set a clear button in the text input box