1、將單個頁面的StatusBar文字顏色改為白色，動態更改也可以在這裏設置

-(UIStatusBarStyle)preferredStatusBarStyle {
    return UIStatusBarStyleLightContent;
}

2、將所有頁面的StatusBar文字顏色改為白色

　　plist文件中View controller-based status bar appearance 設置為 NO

　　在這種情況下，將單個頁面的文字顏色更改為黑色

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

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

3、scrollView滑動更改StatusBar的文字顏色

-(void)scrollViewDidScroll:(UIScrollView *)scrollView {
    _offsetY = scrollView.contentOffset.y;
    [self setNeedsStatusBarAppearanceUpdate];   
 
//更新statusBar顏色，調用preferredStatusBarStyle
}

- (UIStatusBarStyle)preferredStatusBarStyle {
    if (_offsetY <= 136) {
        return UIStatusBarStyleLightContent;
    }
    return UIStatusBarStyleDefault;
}

iOS StatusBar狀態欄文字顏色更改