當前模式的黑屏

Question

我的拳頭viewController中有這樣的代碼：

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

然后在第二個視圖（settingController.m）中：

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

我想在顯示當前模態時設置背景的透明度，但是它顯示黑屏。 有沒有人可以幫助我..

Answer 1

就像您有一個rootViewController，它將顯示您的settingView。

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

帶有過渡的UIModalPresentationCurrentContext

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

嘗試這個

- (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

請用這個

 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];

但這是iOS 6的代碼。對於iOS 5，您可以使用

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

希望這可以幫助

Answer 3

正如上面其他人所解釋的，您可以使用以下方式通過模態演示來實現：

settingView .modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

但是， 如果您看到后面有其他顏色，那是因為窗口具有該顏色。 嘗試設置窗口的背景顏色（通常在AppDelegate上）：

window?.backgroundColor = UIColor.whiteColor()