UIAlertController的基本使用

18-10-23 00:24 字数 776 阅读 2700 已编辑

UIActionSheet和UIAlertView都被弃用了，想要显示弹窗或者actionSheet可以使用UIAlertController，UIAlertController兼具二者功能，并且能做的更多，本文只演示如何显示一个actionSheet。

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"确定退出？" message:nil preferredStyle:UIAlertControllerStyleActionSheet];

UIAlertAction *aAction1 = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"点击了取消");
}];

UIAlertAction *aAction2 = [UIAlertAction actionWithTitle:@"确定退出" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"点击了确定");
    [self.navigationController popViewControllerAnimated:YES];
}];

[alertController addAction:aAction1];
[alertController addAction:aAction2];

[self presentViewController:alertController animated:YES completion:nil];

效果图

UIAlertController