1. 普通的自定义导航按钮
1> 只有返回图标的
UIButton* leftBtn = [UIButtonbuttonWithType:UIButtonTypeSystem];
leftBtn.frame=CGRectMake(0,0,12,18);
[leftBtnsetBackgroundImage:[UIImageimageNamed:@"icon_back"]forState:UIControlStateNormal];
[leftBtnaddTarget:selfaction:@selector(leftBarBtnClicked)forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem= [[UIBarButtonItemalloc]initWithCustomView:leftBtn];
2> 有图标 有文字
UIButton* leftBtn = [UIButtonbuttonWithType:UIButtonTypeSystem];
leftBtn.frame=CGRectMake(0,0,90,25);
[leftBtnsetImage:[UIImageimageNamed:@"icon_back"]forState:UIControlStateNormal];
[leftBtnsetTitle:@"添加好友"forState:UIControlStateNormal];
[leftBtnsetTitleColor:[UIColorcolorWithRed:22/255.0green:88/255.0blue:224/255.0alpha:1]forState:UIControlStateNormal];
leftBtn.titleLabel.font= [UIFontsystemFontOfSize:15];
[leftBtnaddTarget:selfaction:@selector(leftBarBtnClicked)forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem= [[UIBarButtonItemalloc]initWithCustomView:leftBtn];
3> 有的时候图标和文字之间的距离会显的太近 ，或者这个自定义的返回bar会距离左边太近
对于图标和文字距离太近，其实很简单 ： [leftBtnsetTitle:@" 添加好友"forState:UIControlStateNormal];
在文字之前加几个空格 ，看你满意喽
对于整个返回按钮距离左边太近 ，我们可以这么写
//自定义导航左侧按钮
UIButton* leftBtn = [UIButtonbuttonWithType:UIButtonTypeSystem];
leftBtn.frame=CGRectMake(0,0,90,25);
[leftBtnsetImage:[UIImageimageNamed:@"icon_back"]forState:UIControlStateNormal];
[leftBtnsetTitle:@"添加好友"forState:UIControlStateNormal];
[leftBtnsetTitleColor:[UIColorcolorWithRed:22/255.0green:88/255.0blue:224/255.0alpha:1]forState:UIControlStateNormal];
leftBtn.titleLabel.font= [UIFontsystemFontOfSize:15];
[leftBtnaddTarget:selfaction:@selector(leftBarBtnClicked)forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem*leftBarButtonItem = [[UIBarButtonItemalloc]initWithCustomView:leftBtn];
//解决按钮不靠左的问题.
UIBarButtonItem*nagetiveSpacer = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpacetarget:nilaction:nil];
nagetiveSpacer.width= -15;//这个值可以根据自己需要自己调整
self.navigationItem.leftBarButtonItems=@[nagetiveSpacer, leftBarButtonItem];
就这么多 over。
