iOS中常用设置返回按钮

//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:^{}];}

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