button上的图片和文字偏移量排版

- (void)creatView{

     

    NSArray*xarr =@[@"title_tab_essence_normal_night",@"title_tab_newissue_normal_night",@"title_tab_suiji_normal_night"];

    NSArray*farr =@[@"title_tab_essence_normal",@"title_tab_newissue_normal",@"title_tab_suiji_normal"];

    NSArray*lab = @[@"精华",@"最新",@"穿越"];

    for(inti = 0; i<3; i++) {

        UIButton*btn = [UIButtonbuttonWithType:UIButtonTypeCustom];

        //设置button上的正常情况下显示的图片

        [btn setImage:[[UIImageimageNamed:farr[i]] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateNormal];

        //设置button上的被点击后显示的图片

        [btn setImage:[[UIImageimageNamed:xarr[i]] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateSelected];

        //设置button上图片的偏移量

        [btn setImageEdgeInsets:UIEdgeInsetsMake(0.0, 9.0, 25.0, 9.0) ];

        //设置button大小

        btn.frame = CGRectMake(90+i*50, 5, 50, 50);

        //设置button方法的实现

        [btn addTarget:selfaction:@selector(Click:)

      forControlEvents:UIControlEventTouchUpInside];

        //设置button上的正常情况下显示的字体的颜色

        btn.titleLabel.font = [UIFontsystemFontOfSize:12.0f];

        [btn setTitle:lab[i] forState:UIControlStateNormal];

        [btn setTitleColor:[UIColorgrayColor] forState:UIControlStateNormal];

        //设置button上的被点击后的显示的字体颜色

        [btn setTitleColor:[UIColorblackColor] forState:UIControlStateSelected];

        //设置button上字体的偏移量

        [btn setTitleEdgeInsets:UIEdgeInsetsMake(10.0,-40.0 , 0.0, -8.0)];

        //设置tag值

        btn.tag = 100+i;

        //运行程序默认被选中的button

        if(btn.tag == 100) {

            btn.selected = YES;

        }

        //粘贴到导航条上

        [self.navigationController.navigationBar addSubview:btn];

    }

}

#pragma mark - button方法实现

- (void)Click:(UIButton*)btn{

    //设置被选中

    btn.selected = YES;

    //遍历navigationBar获取subviews子视图

    for(UIView*vie in self.navigationController.navigationBar.subviews) {

        if([vie isKindOfClass:[UIButtonclass]]) {

            //没有被选中的button设置为未被选中状态

            if(vie.tag !=btn.tag) {

                ((UIButton*)vie).selected = NO;

            }

        }

    }

}