时间：2021-01-03 15:35:42 | 栏目：iOS代码 | 点击：次
//添加返回按钮
-(void)backBtn{
UIButton *backBtn=[[UIButton alloc]initWithFrame:CGRectMake(0, 10, 60, 20)];
[backBtn setTitle:@"返回" forState:UIControlStateNormal];
backBtn.titleLabel.font=[UIFont systemFontOfSize:12];
backBtn.imageEdgeInsets=UIEdgeInsetsMake(2,2,2,2);
[backBtn setImage:[UIImage imageNamed:@"fanhui"] forState:UIControlStateNormal];
[backBtn addTarget:self action:@selector(backto) forControlEvents:UIControlEventTouchDown];
UIBarButtonItem *leftBtn=[[UIBarButtonItem alloc]initWithCustomView:backBtn];
UIBarButtonItem *flexBtn=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
flexBtn.width=-10;//正数往左移，负数往右移
self.navigationItem.leftBarButtonItems=@[flexBtn,leftBtn];
}
//返回按钮
-(void)backto{
[self dismissViewControllerAnimated:YES completion:^{
}];
}