第iOS自定義UIBarButtonItem的target和action示例代碼-(id)initWithCustomView:(UIView*)customView{

self=[superinitWithCustomView:customView];

if(self){

UIButton*btn=[UIButtonbuttonWithType:UIButtonTypeCustom];

btn.frame=customView.bounds;

btn.backgroundColor=[UIColorclearColor];

[btnaddTarget:selfaction:@selector(clickButton:)forControlEvents:UIControlEventTouchUpInside];

[customViewaddSubview:btn];

returnself;

-(void)clickButton:(UIButton*)sender{

if(self.target[self.targetrespondsToSelector:self.action]){

//[self.targetperformSelector:self.actionwithObject:self];

IMPimp=[self.targetmethodForSelector:self.action];

void(*func)(id,SEL,id)=(void*)imp;

func(self.target,self.action,self);

@end

定義子類對象，調(diào)用子類對象

-(void)viewDidLoad{

[superviewDidLoad];

//自定義View

UIView*view=[[UIViewalloc]initWithFrame:CGRectMake(0.0,0.0,60.0,40.0)];

view.backgroundColor=[UIColorclearColor];

//自定義Item

LLBarButtonItem*barItem=[[LLBarButtonItemalloc]initWithCustomView:view];

barItem.target=self;

barItem.action=@selector(clickRight:);

self.navigationItem.leftBarButtonItem=barItem;

#pragmamark-

-(void)clickRight:(id)sender{

NSLog(@sender:%@,sender);

}

打印target對象

2017-10-1716:24:11.696TestImage[5557:170144]sender:LLBarButtonItem:0x7fb403c16080

方案二

UIBarButtonItem類別

定義類別

#importUIKit/UIKit.h

@interfaceUIBarButtonItem(Custom)

-(void)addCutomTarget:(id)targetaction:(SEL)action;

@end

#importUIBarButtonItem+Custom.h

@implementationUIBarButtonItem(Custom)

-(void)addCutomTarget:(id)targetaction:(SEL)action{

if(self.customView!=nil){

self.target=target;

self.action=action;

UIButton*btn=[UIButtonbuttonWithType:UIButtonTypeCustom];

btn.frame=self.customView.bounds;

btn.backgroundColor=[UIColorclearColor];

[btnaddTarget:selfaction:@selector(clickButton:)forControlEvents:UIControlEventTouchUpInside];

[self.customViewaddSubview:btn];

-(void)clickButton:(UIButton*)sender{

if(self.target[self.targetrespondsToSelector:self.action]){

//[self.targetperformSelector:self.actionwithObject:self];

IMPimp=[self.targetmethodForSelector:self.action];

void(*func)(id,SEL,id)=(void*)imp;

func(self.target,self.action,self);

@end

調(diào)用類別方法

-(void)viewDidLoad{

[superviewDidLoad];

//自定義View

UIView*view=[[UIViewalloc]initWithFrame:CGRectMake(0.0,0.0,60.0,40.0)];

view.backgroundColor=[UIColorclearColor];

//自定義Item

UIBarButtonItem*barItem=[[UIBarButtonItemalloc]initWithCustomView:view];

[barItemaddCutomTarget:selfaction:@selector(clickRight:)];

self.navigationItem.leftBarButtonItem=barItem;

#pragmamark-

-(void)clickRight:(id)sender{

NSLog(@sender:%@,sender);

}

打印target對象

2017-10-1716:28:14.407TestImage[5598:172418