在iOS 8后使用UIAlertController

来源：互联网发布：sqlserver时间比较编辑：程序博客网时间：2024/06/05 20:54

创建实例

UIAlertController *alertController = [UIAlertControlleralertControllerWithTitle:@"标题"message:@"这个是UIAlertController的默认样式"preferredStyle:UIAlertControllerStyleAlert];

preferredStyle 选择类型

UIAlertControllerStyleActionSheet＝0，

UIAlertControllerStyleAlert

UIAlertAction *cancelAction = [UIAlertActionactionWithTitle:@"取消"style:UIAlertActionStyleCancelhandler:nil];

UIAlertAction *okAction = [UIAlertActionactionWithTitle:@"好的"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction *action) {

[collectionView reloadItemsAtIndexPaths:@[indexPath]];

}];

[alertController addAction:cancelAction];

[alertController addAction:okAction];

显示

[selfpresentViewController:alertControlleranimated:YEScompletion:nil];

文本对话框：

[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField){

textField.placeholder =@"登录";

}];

[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {

textField.placeholder =@"密码";

textField.secureTextEntry =YES;

}];

UIAlertAction *okAction = [UIAlertActionactionWithTitle:@"好的"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction *action) {

UITextField *login = alertController.textFields.firstObject;

UITextField *password = alertController.textFields.lastObject;

...}]

好按钮可以读取文本窗中的值

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