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- (void)alertView
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"警告" message:@"你的操作时非法的,您要继续吗" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
alert.alertViewStyle = UIAlertViewStyleLoginAndPasswordInput;
[alert show];
}
- (void)actionSheet
{
UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"警告:你的操作时非法的,您要继续吗" delegate:nil cancelButtonTitle:@"取消" destructiveButtonTitle:@"确定"
otherButtonTitles:@"关闭", nil];
[sheet showInView:self.view];
}
- (void)alertController
{
// 危险操作:弹框提醒
// 1.UIAlertView
// 2.UIActionSheet
// iOS8开始:UIAlertController == UIAlertView + UIActionSheet
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"警告" message:@"你的操作时非法的,您要继续吗" preferredStyle:UIAlertControllerStyleAlert];
// 添加按钮
__weak typeof(alert) weakAlert = alert;
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {
NSLog(@"点击了确定按钮--%@-%@", [weakAlert.textFields.firstObject text], [weakAlert.textFields.lastObject text]);
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
NSLog(@"点击了取消按钮");
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"其它" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
NSLog(@"点击了其它按钮");
}]];
// 添加文本框
[alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.textColor = [UIColor redColor];
textField.text = @"123";
[textField addTarget:self action:@selector(usernameDidChange:) forControlEvents:UIControlEventEditingChanged];
// [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(usernameDidChange:) name:UITextFieldTextDidChangeNotification object:textField];
}];
[alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.secureTextEntry = YES;
textField.text = @"123";
}];
[self presentViewController:alert animated:YES completion:nil];
}
- (void)usernameDidChange:(UITextField *)username
{
NSLog(@"%@", username.text);
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"警告" message:@"你的操作时非法的,您要继续吗" preferredStyle:UIAlertControllerStyleActionSheet];
// 设置popover指向的item
alert.popoverPresentationController.barButtonItem = self.navigationItem.leftBarButtonItem;
// 添加按钮
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {
NSLog(@"点击了确定按钮");
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
NSLog(@"点击了取消按钮");
}]];
[self presentViewController:alert animated:YES completion:nil];
}
// UIAlertControllerStyleActionSheet的使用注意
// 1.不能有文本框
// 2.在iPad中,必须使用popover的形式展示
// Text fields can only be added to an alert controller of style UIAlertControllerStyleAlert
// 只能在UIAlertControllerStyleAlert样式的view上添加文本框
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原文地址:http://www.cnblogs.com/crash-wu/p/4932446.html