iOS导航栏的设置

在开发过程中，很多时候给导航栏设置一个title不能满足项目的需求，有时候我们还要给这个title添加相应的图片，具体做法如下。

    //创建一个Base视图    UIView *titleBaseView = [[UIView alloc] initWithFrame:CGRectMake((WIDTH_VIEW - 70)/2, 11, 70, 22)];    //titleBaseView.backgroundColor = [UIColor redColor];    //创建一个ImageView    UIImageView *titleImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"倒计时"]];    //创建一个Label    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(22, 0, 70 - 22, 22)];    titleLabel.font = [UIFont systemFontOfSize:18.0];    titleLabel.textColor = TITLE_COLOR_DEEP;    titleLabel.textAlignment = NSTextAlignmentCenter;    titleLabel.text = @"时间";    //将两个控件添加到Base视图上    [titleBaseView addSubview:titleImageView];    [titleImageView addSubview:titleLabel];    //将Base视图设置为导航栏标题视图    self.navigationItem.titleView = titleBaseView;