• UITextField的详细使用


    UItextField通常用于外部数据输入,以实现人机交互。下面以一个简单的登陆界面来讲解UItextField的详细使用。

    //用来显示“用户名”的label

    UILabel* label1 = [[UILabelallocinitWithFrame:CGRectMake(15657030)];

        label1.backgroundColor = [UIColorclearColor];

        label1.font = [UIFontfontWithName:@"Helvetica-Bold"size:18];

        label1.text = @"用户名";

        label1.textColor = [UIColorwhiteColor];

        [view1 addSubview:label1];

        [label1 release];

       UITextField * accountField = [[UITextField allocinitWithFrame:CGRectMake(85.0f60.0f190.0f40.0f)];

    [accountField setBorderStyle:UITextBorderStyleRoundedRect]; //外框类型

    accountField.placeholder = @"用户名"; //默认显示的字

    accountField.secureTextEntry = NO; //是否以密码形式显示

    accountField.autocorrectionType = UITextAutocorrectionTypeNo;//设置是否启动自动提醒更正功能

    accountField.autocapitalizationType = UITextAutocapitalizationTypeNone;

    accountField.returnKeyType = UIReturnKeyDone;  //键盘返回类型

    accountField.clearButtonMode = UITextFieldViewModeWhileEditing//编辑时会出现个修改X

    accountField.delegate = self;

    accountField.keyboardType = UIKeyboardTypeDefault;//键盘显示类型

    accountField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter//设置居中输入

    accountField.scrollEnabled = YES;//是否可以拖动

    accountField.autoresizingMask = UIViewAutoresizingFlexibleHeight;//自适应高度

     

        //用来显示“密码”的label

        UILabel* label2 = [[UILabelallocinitWithFrame:CGRectMake(151207030)];

        label2.backgroundColor = [UIColorclearColor];

        label2.font = [UIFontfontWithName:@"Helvetica-Bold"size:18];

        label2.text = @"密码";

        label2.textColor = [UIColorwhiteColor];

        [view1 addSubview:label2];

        [label2 release];

      UITextField*  passwdField = [[UITextField allocinitWithFrame:CGRectMake(85.0f115.0f190.0f40.0f)];

    [passwdFieldsetBorderStyle:UITextBorderStyleRoundedRect]; //外框类型

    //passwdField.placeholder = @"密码"; //默认显示的字

    passwdField.secureTextEntry = YES//密码类型

     

    passwdField.autocorrectionType = UITextAutocorrectionTypeNo;   

    passwdField.autocapitalizationType = UITextAutocapitalizationTypeNone;

    passwdField.returnKeyType = UIReturnKeyDone;

    passwdField.clearButtonMode = UITextFieldViewModeWhileEditing//编辑时会出现个修改X

    passwdField.delegate = self;

     // passwdField.keyboardAppearance = UIKeyboardAppearanceDefault;

    passwdField.keyboardType = UIKeyboardTypeNumbersAndPunctuation;

    passwdField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;

     

    委托方法

    -(void)textFieldDidBeginEditing:(UITextField *)textField;  

    //当开始点击textField会调用的方法    

     

     

    -(void)textFieldDidEndEditing:(UITextField *)textField; 

    //当textField编辑结束时调用的方法

     

    //按下Done按钮的调用方法,我们让键盘消失   

    -(BOOL)textFieldShouldReturn:(UITextField *)textField{  

     

     [textField resignFirstResponder];  

     return YES;

     

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  • 原文地址:https://www.cnblogs.com/top5/p/2506608.html
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