[IOS]navigation bar自定义按钮

[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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