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-(void)viewDidLayoutSubviews{
[self setDisplayCustomTitleText:@"每日头条"];
}
1 #pragma mark - 设置导航栏 self.navigationItem.titleView 居中
2 - (void)setDisplayCustomTitleText:(NSString*)text
3 {
4 CGFloat titleViewHeight = 44;
5 UIView *titleView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, Screen_Width, titleViewHeight)];
6 titleView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin |UIViewAutoresizingFlexibleRightMargin;
7 titleView.autoresizesSubviews = YES;
8 titleView.backgroundColor = [UIColor clearColor];
9 UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, Screen_Width, titleViewHeight)];
10 titleLabel.backgroundColor = [UIColor clearColor];
11 titleLabel.font = [UIFont systemFontOfSize:25];
12 titleLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
13 titleLabel.textColor = kMyColor(37, 171, 39);
14 titleLabel.textAlignment = NSTextAlignmentCenter;
15 CGRect leftViewbounds = self.navigationItem.leftBarButtonItem.customView.bounds;
16 CGRect rightViewbounds = self.navigationItem.rightBarButtonItem.customView.bounds;
17
18 CGRect frame;
19 CGFloat maxWidth = leftViewbounds.size.width > rightViewbounds.size.width ? leftViewbounds.size.width : rightViewbounds.size.width;
20 maxWidth += 15;//leftview 左右都有间隙，左边是5像素，右边是8像素，加2个像素的阀值 5 ＋ 8 ＋ 2
21 frame = titleLabel.frame;
22 frame.size.width = Screen_Width - maxWidth * 2;
23
24 titleLabel.frame = frame;
25 frame = titleView.frame;
26 frame.size.width = Screen_Width - maxWidth * 2;
27 titleView.frame = frame;
28 titleLabel.text = text;
29 [titleView addSubview:titleLabel];
30 self.navigationItem.titleView = titleView;
31 }