导航VC的左右item代码

时间：2023-03-09 01:50:14
导航VC的左右item代码 
代码控制左右item：
　　 UIButton *btnCancel = [UIButton buttonWithType:UIButtonTypeCustom];

    btnCancel.frame=CGRectMake(0, 0, 60, 30);

    btnCancel.titleLabel.font=[UIFont systemFontOfSize:13];

    btnCancel.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

    [btnCancel setTitle:@"返回" forState:UIControlStateNormal];

    [btnCancel addTarget:self action:@selector(buttonCancel:) forControlEvents:UIControlEventTouchUpInside];

    self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc] initWithCustomView:btnCancel];

    

    UIButton *btnCommit = [UIButton buttonWithType:UIButtonTypeCustom];

    btnCommit.frame=CGRectMake(0, 0, 60, 30);

    btnCommit.titleLabel.font=[UIFont systemFontOfSize:13];

    btnCommit.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;

    [btnCommit setTitle:@"提交" forState:UIControlStateNormal];

    [btnCancel addTarget:self action:@selector(commitAction:) forControlEvents:UIControlEventTouchUpInside];

    self.navigationItem.rightBarButtonItem=[[UIBarButtonItem alloc] initWithCustomView:btnCommit];

其他的方法：
		//第一种：这种设置出来的外观不好控制

    UIImage *searchimage=[UIImage imageNamed:@"search.png"];

    UIBarButtonItem *barbtn=[[UIBarButtonItem alloc] initWithImage:nil style:UIBarButtonItemStyleDone target:self action:@selector(searchprogram)];

    barbtn.image=searchimage;

    self.navigationItem.rightBarButtonItem=barbtn;

		//第二种：这种图片将填满button，大小可控

    UIButton*rightButton = [[UIButton alloc]initWithFrame:CGRectMake(0,0,30,30)];

    [rightButton setImage:[UIImage imageNamed:@"back.png"]forState:UIControlStateNormal];

    [rightButton addTarget:self action:@selector(backto)forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem*rightItem = [[UIBarButtonItem alloc]initWithCustomView:rightButton];

    self.navigationItem.leftBarButtonItem= rightItem;

 	 //第三种：

		UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:@selector(methodtocall:) ]; 

	如何让navigationItem.rightBarButtonItem隐藏消失？

	self.navigationItem.rightBarButtonItem=nil；即可实现

　　





　　
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