解决ios7.0 以后自定义导航栏左边按钮靠右的问题

来源：互联网发布：et制版软件下载编辑：程序博客网时间：2024/05/08 19:23

1.自定义按钮

//左按钮

UIButton *leftBtn = [[UIButtonalloc]initWithFrame:RectWithPara(-20,0, 44, 44)];

[leftBtn addTarget:selfaction:@selector(btnClicked:)forControlEvents:UIControlEventTouchUpInside];//设置按钮点击事件

[leftBtn setBackgroundImage:ImageNamed(@"ic_fanhui_normal.png")forState:UIControlStateNormal ];//设置按钮正常状态图片

[leftBtn setBackgroundImage:ImageNamed(@"ic_fanhui_pressed.png")forState:UIControlStateSelected];//设置按钮选中图片

2.初始化UIBarButtonItem

UIBarButtonItem *leftBarButon = [[UIBarButtonItemalloc]initWithCustomView:leftBtn];

3.调整位置以及设置导航栏的左边图标

// 调整 leftBarButtonItem 在 iOS7下面的位置

if(([[[UIDevicecurrentDevice] systemVersion]floatValue]>=7.0?20:0))

{

UIBarButtonItem *negativeSpacer = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace

target:nilaction:nil];

negativeSpacer.width = -20;//这个数值可以根据情况自由变化

self.navigationItem.leftBarButtonItems =@[negativeSpacer, leftBarButon];

}else

self.navigationItem.leftBarButtonItem = leftBarButon;

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