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[IOS]navigation bar自定义按钮


1.建立Category类:

.h:



@interface UIViewController (SMHNavigationBar)

- (void)customLeftButton:(NSString*)leftImageName;
- (void)onCustomLeftButtonClick:(id)sender;

@end

 .m:

#define screenWidth [UIScreen mainScreen].bounds.size.width

@implementation UIViewController (SMHNavigationBar)

- (void)customLeftButton:(NSString*)leftImageName{
UIImage *leftImage = [UIImage imageNamed:leftImageName];

UIButton *navButton = [UIButton buttonWithType:UIButtonTypeCustom];
if (leftImage != nil) {
[navButton setImage:leftImage forState:UIControlStateNormal];
}
UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 65, 33)];
[navButton addTarget:self action:@selector(onCustomLeftButtonClick:) forControlEvents:UIControlEventTouchUpInside];
if(screenWidth >= 414){
navButton.frame = CGRectMake((screenWidth/61)*3-17, 0, 36, 36);

}else{
navButton.frame = CGRectMake((screenWidth/61)*3-14, 0, 36, 36);
}

[leftView addSubview:navButton];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:leftView];
}

- (void)onCustomLeftButtonClick:(id)sender{

}
@end


 

使用:

[self customLeftButton:@"list2"];

 

*隐藏回退键:



self.navigationItem.hidesBackButton = YES;



 

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