ios - 同一个 UIAlertView 中显示多个错误

Question

我在网上搜索过，但没有找到答案。在我的应用程序中，我有一个用户注册，所以我必须在接受用户之前检查输入文本字段。

这是我的代码:

- (IBAction)continueRegister:(id)sender {
    if (!termsOfUseChecked)
        NSLog(@"Error");
        else
            NSLog(@"Success");
    if ([_regTelephoneNumber.text length] > 10) {
        [self initWithTitle:@"error" andMessage:@"bla bla" andCancelButton:@"ok"];
    }

    if ([_regUserEmail.text rangeOfString:@"@"].location == NSNotFound){
        [self initWithTitle:@"error" andMessage:@"bla bla" andCancelButton:@"ok"];
    }
    if (![_regPassword.text isEqualToString:_regConfirmPassword.text]) {
     [self initWithTitle:@"error" andMessage:@"bla bla" andCancelButton:@"ok"];
    }

}

-(void)initWithTitle:(NSString*)title andMessage:(NSString*)message andCancelButton:(NSString*)cancelButton;
{
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:title message:message delegate:self cancelButtonTitle:cancelButton otherButtonTitles:nil, nil];
    [alert show];
} 

但如果发生不止一个错误，用户会收到许多弹出窗口。有什么方法可以在同一个 UIAlertview 中显示所有错误？

Answer 1

你可以使用NSArray

- (IBAction)continueRegister:(id)sender {
    NSMutableArray *errorArr = [@[] mutableCopy];
    if (!termsOfUseChecked)
        NSLog(@"Error");
    else
        NSLog(@"Success");
    if ([_regTelephoneNumber.text length] > 10) {
        [errorArr addObject:@"Telephone Bla"];
    }

    if ([_regUserEmail.text rangeOfString:@"@"].location == NSNotFound){
        [errorArr addObject:@"UserEmail Bla"];
    }
    if (![_regPassword.text isEqualToString:_regConfirmPassword.text]) {
        [errorArr addObject:@"Password Bla"];
    }

    if([errorArr count]==0){
        [self initWithTitle:@"No Error" andMessage:@"Success" andCancelButton:@"ok"];
    }
    else if([errorArr count] == 1){

        [self initWithTitle:@"Error" andMessage:errorArr[0] andCancelButton:@"ok"];
    }
    else if([errorArr count] >1){

        [self initWithTitle:@"Multiple Error" andMessage[errorArr componentsJoinedByString:@","] andCancelButton:@"ok"];
    }

}