Uikit Framework (UIButton) and Uitextfield

UIButton button controls and Uitextfield input box controls, which are two of the more commonly used controls in UI development

Compared with Uilabel, Uiimageview and Uiswitch, the usage is comparatively rich.

• Four states of the UIButton
  

UIButton has four states:

Normal state UIControlStateNormal//Highlight state: State when button is pressed uicontrolstatehighlighted// Checked state: Toggle through the selected property of the UIButton object uicontrolstateselected//disable state: Toggle through the Enable property of the UIButton object, Cannot accept user's Click Uicontrolstatedisabled

If you set the text, picture data in the normal state, the remaining three states also use the data

Highlight state, color burn, disable state, color dimmed

You can also set the text, pictures and other data in each state separately.

• Child view of UIButton
  

The UIButton interior contains three sub-views:

A Uilabel text label (blue)

A Uiimageview picture control (default to the left of text) (orange)

A Uiimageview background image space (below the text and picture space) (* * *)

One of the first two sub-views, you can not display the data

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The setting data must indicate which state it is in:

-(void) Settitle: (NSString *) title forstate: (uicontrolstate) state-(NSString *) Titleforstate: (uicontrolstate) state- (void) SetImage: (UIImage *) image forstate: (uicontrolstate) state-(UIImage *) Imageforstate: (uicontrolstate) state-( void) SetBackgroundImage: (UIImage *) image forstate: (uicontrolstate) state-(UIImage *) Backgroundimageforstate: ( Uicontrolstate) state

• UIButton sub-class
  

Buttons are the most commonly seen elements in the interface, in order to customize the various desired button effects, often implemented UIButton subclasses

The following effects can be achieved:

1) The setting of the UIButton property is encapsulated in the constructor method

2) Remove some of your own effects

For example, remove the shadow effect when the highlight state, overriding the setter method of the highlighted property: Do nothing

3) Modify the relative position of the text label and the picture

Override the following methods:

-(CGRect) Contentrectforbounds: (CGRect) bounds-(CGRect) Imagerectforcontentrect: (CGRect) contentrect-(CGRect) Titlerectforcontentrect: (cgrect) Contentrect

• Various sub-views on the Uitextfield
  

Right-hand Clear button:

@property (nonatomic) Uitextfieldviewmode clearbuttonmodetypedef enum {uitextfieldviewmodenever, Uitextfieldviewmodewhileediting, uitextfieldviewmodeunlessediting, uitextfieldviewmodealways} UITextFieldViewMode ;

Left and right side view, usually placed buttons

@property (nonatomic, Strong) UIView *leftview@property (nonatomic, strong) UIView *rightview

Left and right side view display mode

@property (nonatomic) Uitextfieldviewmode leftviewmode@property (nonatomic) Uitextfieldviewmode RightViewMode

• Uitextfield's Custom keyboard
  

Modifying the keyboard with Inputview

@property (ReadWrite, strong) UIView *inputview

It is usually set up for a variety of selection views, such as:

Textfield.inputview = [[Uidatepicker alloc] init];

To set the toolbar on the keyboard via Inputaccessoryview

@property (ReadWrite, strong) UIView *inputaccessoryview

Various buttons are generally placed on the toolbar, such as completion, next, previous, etc.

Uitoolbar * ToolBar = [Uitoolbar alloc] Init];textfield.inputaccessoryview = Toolbar;toolbar.frame = CGRectMake (0, 0, 375, //toolbar Add button//...

This article is from the "Teacheran" blog, make sure to keep this source http://annmeng.blog.51cto.com/3321237/1746205

Uikit Framework (UIButton) and Uitextfield