SVProgressHUD 设置显示时当前界面不可移动

在viewWillAppear中设置

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    [SVProgressHUD setDefaultMaskType:SVProgressHUDMaskTypeClear];
}

如需全局设置，请在AppDelegate.m中设置

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    [SVProgressHUD setDefaultMaskType:SVProgressHUDMaskTypeClear];
    
    return YES;
}