IOS中最常用到的控件UIButton、UISlider、UISwitch、UISegmentedControl通過Xib文件拖動(dòng)生成非常簡(jiǎn)單，其實(shí)用代碼實(shí)現(xiàn)也是一樣的簡(jiǎn)單，當(dāng)然，用代碼實(shí)現(xiàn)能夠掌握到更多的東西。
上圖中包涵提到的4種控件，UIButton按鈕、UISlider滑塊、UISwitch開關(guān)、UISegmentedControl分類
首先創(chuàng)建一個(gè)名為CodeControls的Empty Application項(xiàng)目
AppDelegate.h和AppDelegate.m文件中和IOS代碼實(shí)現(xiàn)Hello World中的一樣
MainViewController.h
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<span?style="font-size:10px;">#import?<UIKit/UIKit.h>?? ?? @interface?MainViewController?:?UIViewController?? ?? @property?(strong,?nonatomic)?UIButton?*myBtn;?? @property?(strong,?nonatomic)?UISlider?*mySlider;?? @property?(strong,?nonatomic)?UISwitch?*mySwitch;?? @property?(strong,?nonatomic)?UISegmentedControl?*mySc;?? ?? @end</span>??
MainViewController.m
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<span?style="font-size:10px;">#import?"MainViewController.h"?? ?? @interface?MainViewController?()?? ?? @end?? ?? @implementation?MainViewController?? @synthesize?myBtn,mySlider,mySwitch,mySc;?? ?? -?(void)viewDidLoad?? {?? ?????? ????UIView?*mainView?=?[[UIView?alloc]?initWithFrame:[[UIScreen?mainScreen]?applicationFrame]];?? ????mainView.backgroundColor?=?[UIColor?whiteColor];?? ????self.view?=?mainView;?? ????[mainView?release];?? ?????? ?????? ????UIButton?*btn?=?[UIButton?buttonWithType:UIButtonTypeRoundedRect];?? ????btn.frame?=?CGRectMake(100,?30,?57,?57);?? ????[btn?setTitle:@"Button"?forState:UIControlStateNormal];?? ????[btn?setTitleColor:[UIColor?blackColor]?forState:UIControlStateNormal];?? ????[btn?setBackgroundImage:[UIImage?imageNamed:@"icon.png"]?forState:UIControlStateNormal];?? ????[btn?addTarget:self?action:@selector(onClick:)?forControlEvents:UIControlEventTouchUpInside];?? ????myBtn?=?btn;?? ????[self.view?addSubview:myBtn];?? ?????? ?????? ?????? ????UISlider?*slider?=?[[[UISlider?alloc]?initWithFrame:CGRectMake(50,?180,?200,?10)]?autorelease];?? ????slider.minimumValue?=?0.0f;?? ????slider.maximumValue?=?100.0f;?? ????slider.value?=?50.0f;?? ????[slider?addTarget:self?action:@selector(onChange:)?forControlEvents:UIControlEventTouchUpInside];?? ????mySlider?=?slider;?? ????[self.view?addSubview:mySlider];?? ?????? ?????? ????UISwitch?*sbtn?=?[[[UISwitch?alloc]?initWithFrame:CGRectMake(50,?210,?200,?50)]?autorelease];?? ????[sbtn?addTarget:self?action:@selector(onSwitch:)?forControlEvents:UIControlEventTouchUpInside];?? ????mySwitch?=?sbtn;?? ????[self.view?addSubview:mySwitch];?? ?????? ?????? ????NSArray?*btnList?=?[NSArray?arrayWithObjects:@"left",@"center",@"right",?nil];?? ????UISegmentedControl?*sc?=?[[[UISegmentedControl?alloc]?initWithItems:btnList]?autorelease];?? ????sc.frame?=?CGRectMake(50,?250,?200,?60);?? ????[sc?addTarget:self?action:@selector(onSelect:)?forControlEvents:UIControlEventTouchUpInside];?? ????mySc?=?sc;?? ????[self.view?addSubview:mySc];?? ?????? ????[super?viewDidLoad];?? }?? ?? ?? -?(void)onClick:(id?*)sender?? {?? ?? }?? ?? ?? -?(void)onChange:(id?*)sender?? {?? ?????? }?? ?? ?? -?(void)onSwitch:(id?*)sender?? {?? ?????? }?? ?? ?? -?(void)onSelect:(id?*)sender?? {?? }?? </span>??
這里沒有寫點(diǎn)擊每個(gè)控件的具體實(shí)現(xiàn)方法。
UICnotrol Class 下的所有Touch事件
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UIControlEventTouchDown????????????? UIControlEventTouchDownRepeat??????? UIControlEventTouchDragInside??????? UIControlEventTouchDragOutside?????? UIControlEventTouchDragEnter???????? UIControlEventTouchDragExit????????? UIControlEventTouchUpInside????????? UIControlEventTouchUpOutside???????? UIControlEventTouchCancel??????????? UIControlEventValueChanged?????????? UIControlEventEditingDidBegin??????? UIControlEventEditingChanged???????? UIControlEventEditingDidEnd????????? UIControlEventEditingDidEndOnExit??? UIControlEventAllTouchEvents???????? UIControlEventAllEditingEvents?????? UIControlEventApplicationReserved??? UIControlEventSystemReserved???????? UIControlEventAllEvents??
UIButton Class下的所有按鈕樣式
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UIButtonTypeCustom?? UIButtonTypeRoundedRect?? UIButtonTypeDetailDisclosure?? UIButtonTypeInfoLight?? UIButtonTypeInfoDark?? UIButtonTypeContactAdd??
總結(jié)
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