• IOS-UITextField类


    文字属性

    •   text  
    •   placeholder   //默认使用70%灰色
    •   font 
    •   textColor 
    •   textAlignment 

    文字大小

    •   adjustsFontSizeToFitWidth 
    •   minimumFontSize 

    编辑行为

    •   editing     //是否正在编辑(read-only)
    •   clearsOnBeginEditing 

    展现形态

    •   borderStyle     //默认UITextBorderStyleNone,是UITextBorderStyleRoundedRect时自定义的background无效
    •   background 
    •   disabledBackground  property    //background未设置时,这个会无效

    覆盖视图

    •   clearButtonMode 
    •   leftView   //clearButton那样的视图,不过在左边,不要忘了设置mode
    •   leftViewMode 
    •   rightView   //默认覆盖clearButton
    •   rightViewMode 

    访问代理

    •   delegate  property

    绘画界面

    以下都不应直接调用,需要的话可以重写

    • – textRectForBounds:  //重写来重置文字区域
    • – drawTextInRect:  //改变绘文字属性.重写时调用super可以按默认图形属性绘制,若自己完全重写绘制函数,就不用调用super了.
    • – placeholderRectForBounds:  //重写来重置占位符区域
    • – drawPlaceholderInRect:  //重写改变绘制占位符属性.重写时调用super可以按默认图形属性绘制,若自己完全重写绘制函数,就不用调用super了.
    • – borderRectForBounds:  //重写来重置边缘区域
    • – editingRectForBounds:  //重写来重置编辑区域
    • – clearButtonRectForBounds:  //重写来重置clearButton位置,改变size可能导致button的图片失真
    • – leftViewRectForBounds:
    • – rightViewRectForBounds:

    代替输入

    •   inputView     //代替标准的系统键盘
    •   inputAccessoryView   //编辑时显示在系统键盘或用户自定义的inputView上面的视图

    UITextFieldBorderStyle

    typedef enum {
    UITextBorderStyleNone,//无框
    UITextBorderStyleLine,//线框
    UITextBorderStyleBezel,//bezel风格线框
    UITextBorderStyleRoundedRect//圆角边框
    } UITextBorderStyle;

    UITextFieldViewMode

    typedef enum {
    UITextFieldViewModeNever,
    UITextFieldViewModeWhileEditing,
    UITextFieldViewModeUnlessEditing,
    UITextFieldViewModeAlways
    } UITextFieldViewMode; 

    Notifications

    UITextFieldTextDidBeginEditingNotification

    UITextFieldTextDidChangeNotification

    UITextFieldTextDidEndEditingNotification

    委托事件

    @protocol UITextFieldDelegate <NSObject>

    @optional

    - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField;        // 返回NO则不许编辑

    - (void)textFieldDidBeginEditing:(UITextField *)textField;           // became first responder

    - (BOOL)textFieldShouldEndEditing:(UITextField *)textField;          // 返回YES允许结束并且resign first responder status. 返回NO不许编辑状态结束

    - (void)textFieldDidEndEditing:(UITextField *)textField;             // 上面返回YES后执行;上面返回NO时有可能强制执行(e.g. view removed fromwindow)

    - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string;   // 返回NO不改变

    - (BOOL)textFieldShouldClear:(UITextField *)textField;               // clear button事件,返回NO过滤之

    - (BOOL)textFieldShouldReturn:(UITextField *)textField;              // 'return' key事件.返回NO过滤之

    @end

     
     
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  • 原文地址:https://www.cnblogs.com/ubersexual/p/3510916.html
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