Question

我的拳头viewController中有这样的代码：

- (IBAction)showSetting:(id)sender{
   settingView = [[settingController alloc]initWithNibName:@"settingController" bundle:nil];
   settingView.modalPresentationStyle =  UIModalTransitionStyleCrossDissolve;
   [self presentModalViewController:settingView animated:YES];
}

然后在第二个视图（settingController.m）中：

- (IBAction)closeSetting:(id)sender{
   [self dismissModalViewControllerAnimated:YES];
}

我想在显示当前模态时设置背景的透明度，但它显示一个黑色的空白屏幕。有没有人可以帮助我..

Answer 1

就像你有一个rootViewController，它将显示你的settingView。

settingView .view.backgroundColor = [UIColor clearColor];
rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;
[rootViewController presentModalyourViewController:settingView  animated:YES];`

带转移的UIModalPresentationCurrentContext

settingView .modalPresentationStyle = UIModalPresentationCurrentContext;
settingView .modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

试试这个

- (IBAction)showSetting:(id)sender{
   settingView = [[settingController alloc]initWithNibName:@"settingController" bundle:nil];
   settingView .view.backgroundColor = [UIColor clearColor];
    settingView .modalPresentationStyle = UIModalPresentationCurrentContext;
    settingView .modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
    [self presentModalyourViewController:settingView  animated:YES];
}

Answer 2

请使用此

 settingView *settingViewObj=[[settingView alloc]initWithNibName:@"settingView" bundle:nil];
    UINavigationController *nController = [[UINavigationController alloc]initWithRootViewController:settingViewObj];
   [nController setNavigationBarHidden:NO];
   [self.navigationController  presentViewController:nController animated:YES completion:nil];

但这是适用于iOS 6的代码。对于iOS 5，您可以使用

[self.navigationController  presentModelViewController:nController animated:YES];

希望这有帮助

Answer 3

如上所述，您可以使用以下方式进行模态演示：

settingView .modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

但是，如果您看到来自后面的不同颜色是因为您的窗口具有该颜色。尝试设置窗口的背景颜色（通常在AppDelegate上）：

window?.backgroundColor = UIColor.whiteColor()

目前莫代尔的黑屏

3 个答案: