作者:城哥_1986 | 来源:互联网 | 2023-05-16 16:03
我正在尝试使用UIAlertController.我需要一个带有两个按钮的弹出框 - "取消"和"删除并退出".但我只能看到"删除并退出"按钮而不是取消按钮.这是代码: -
NSString *cOnfirmText= "Hi";
UIAlertController *alert = [UIAlertController alertControllerWithTitle:confirmText message:@"" preferredStyle:UIAlertControllerStyleActionSheet];
// Created a deleted action
UIAlertAction *destroyAction = [UIAlertAction actionWithTitle:@"Delete and Sign Out"
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction *action) {
NSLog(@"Delete Action Pressed");
[self signout];
}];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel"
style:UIAlertActionStyleCancel
handler:nil];
[alert.view setTintColor:[UIColor grayColor]];
[alert addAction:cancelAction];
[alert addAction:destroyAction];
[alert setModalPresentationStyle:UIModalPresentationPopover];
UIPopoverPresentationController *popPresenter = [alert popoverPresentationController];
// Set the sourceView.
popPresenter.sourceView = logoutButton;
popPresenter.sourceRect = logoutButton.bounds;
[self presentViewController:alert animated:YES completion:nil];
不幸的是,我无法发布图片,所以如果您需要更多说明,请告诉我.
1> 小智..:
在iOS8上,仅在需要时显示取消按钮.如果您在iPhone上运行应用程序,则可见.如果您在iPad上运行应用程序,则不显示取消按钮,并且当用户点击弹出窗口外时,将调用取消操作的处理程序(样式:UIAlertActionStyleCancel).
另外,如果您仍然想显示一个,只需将取消动作的`style:`更改为`UIAlertActionStyleDefault`