导航栏使用UIButton自定义返回按钮的图片
时间：2017-07-28 17:31:14
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- (void)viewDidLoad {
UIButton *backItem = [UIButton buttonWithType:UIButtonTypeCustom];
UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithCustomView:backItem];
backItem.frame = CGRectMake(18, 5, 20, 20);
[backItem setImage:[UIImage imageNamed:@"返回 (6)"] forState:UIControlStateNormal];
[backItem addTarget:self action:@selector(backSection1) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = back;
}
-(void)backSection1{
if (viewcontrollers.count>1) {
if ([viewcontrollers objectAtIndex:viewcontrollers.count-1]==self) {
//push方式 [self.navigationController popViewControllerAnimated:YES];
}
} else{
//present方式 [self.navigationController dismissViewControllerAnimated:YES completion:nil];
}
原文：http://www.cnblogs.com/Cassiedou/p/7251479.html
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