设置状态栏颜色

一、修改状态栏颜色
在info.plist中，添加View controller-based status bar appearance=NO
状态栏字体的颜色默认为白色
在appdelegate.m中添加代码
[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleDefault;
UIStatusBarStyleDefault：字体为黑色
UIStatusBarStyleLightContent：字体为白色

** 二、修改单个页面状态栏颜色**
1、在info.plist中，添加View controller-based status bar appearance=NO
2、在appdelegate.m中添加代码
[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
3、在需要设置状态栏的vc中添加下方代码

-(void)viewWillAppear:(BOOL)animated{
    [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleDefault;
}

-(void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
}