UITextFiled

UITextField是常用的文本输入控件，用于用户输入文本信息（类似于c中的scanf）的UI视图

  UITextField与UIlabel的区别：UIlabel可以在界面中显示文本，但是无法选择或编辑UIlabel上的文本，如果用户想输入文本，就可以使用UITextField控件。

<一>.基础属性方法

【见UITextFieldDemo1-基础语法】

//下面列出属性方法的在工程中相关函数

Accessing the Text Attributes

- (void)textFieldSetting

•    text  property

•    placeholder  property

•    font  property

•    textColor  property

•    textAlignment  property

Sizing the Text Field’s Text

- (void)textFieldSetting

•    adjustsFontSizeToFitWidth  property

•    minimumFontSize  property

Managing the Editing Behavior

- (void)textFieldSetting

•    editing  property

•    clearsOnBeginEditing  property

Setting the View’s Background Appearance

- (void)textFieldSetting

•    borderStyle  property

•    background  property

•    disabledBackground  property

Managing Overlay Views

- (void)textFieldSetting

•    clearButtonMode  property

•    leftView  property

•    leftViewMode  property

•    rightView  property

•    rightViewMode  property

Replacing the System Input Views

- (void)keyboardSetting

•    inputView  property

•    inputAccessoryView  property

<二>.重写方法

【注】以下方法无法设置，调用无效，是提供给继承这个UITextField类后，重写的方法

Drawing and Positioning Overrides

• – textRectForBounds:

• – drawTextInRect:

• – placeholderRectForBounds:

• – drawPlaceholderInRect:

• – borderRectForBounds:

• – editingRectForBounds:

• – clearButtonRectForBounds:

• – leftViewRectForBounds:

• – rightViewRectForBounds:

<三>.代理方法 UITextFieldDelegate

Accessing the Delegate

•    delegate  property

Managing Editing

• – textFieldShouldBeginEditing:

• – textFieldDidBeginEditing:

• – textFieldShouldEndEditing:

• – textFieldDidEndEditing:

Editing the Text Field’s Text

• – textField:shouldChangeCharactersInRange:replacementString:

• – textFieldShouldClear:

• – textFieldShouldReturn:

•