ios 改变某个控制器的状态栏颜色

1、利用kvc

- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self setStatusBarBackgroundColor:[UIColor redColor]];
}

//设置状态栏颜色
- (void)setStatusBarBackgroundColor:(UIColor *)color {
    UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
    if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
        statusBar.backgroundColor = color;
    }
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [self setStatusBarBackgroundColor:[UIColor clearColor]];

}

如图

修改了状态栏颜色