[iOS] 可輸入文字(textfield)之警告視窗(alertview)

又遇到問題,於是找了方法來解決


android上面的alertview十分簡單（custom的部份）

iOS呢？是否一樣簡單？

[ iOS 7 + Xcode 6.3.1 ]


第一次看別人的code：

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"輸入IP" message:@" " delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"確認",nil];

    UITextField * txt = [[UITextField alloc] init];

    txt.backgroundColor = [UIColor whiteColor];

    txt.frame = CGRectMake(alert.center.x+65,alert.center.y+48, 150,23);

    [alert addSubview:txt];

    [alert show];

結果有跳出警告視窗,但是沒有可以輸入的阿！

於是就繼續查,才發現要加上

alert.alertViewStyle = UIAlertViewStylePlainTextInput;

正確版本：

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"輸入IP" message:@" " delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"確認",nil];

    alert.alertViewStyle = UIAlertViewStylePlainTextInput;

    UITextField * txt = [[UITextField alloc] init];

    txt.backgroundColor = [UIColor whiteColor];

    txt.frame = CGRectMake(alert.center.x+65,alert.center.y+48, 150,23);

    [alert addSubview:txt];

    [alert show];

當然style也有password/default(無法顯示)/login..之類的,大家可以自行嘗試喔！

end

[iOS] 警告訊息框 ＋ 帳號密碼輸入

練習到這部分又覺得這個功能很實用，於是又放上來了 。

其實跟昨天的那篇沒有差太多，但就是進階版本。（詳情可以看 警號訊息框 ）

先放上完成圖 ＆ code

一樣是在viewcontroller.m裡面做修改喔！

詳細的備註程式裡面有寫完整了，如果還不會也是可以發問

//

//  ViewController.m

//  AlertDialog_with_account_n_passwd

//

//  Created by daniel on 2015/1/27.

//  Copyright (c) 2015年 daniel. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

- (void) viewDidAppear:(BOOL)animated

{

    //create a UIAlertController

    UIAlertController *alertController = [UIAlertController

                                          alertControllerWithTitle:@"Title" message:@"message" preferredStyle:UIAlertControllerStyleAlert];

    //declare a "cancel" button

    UIAlertAction *cacelAction = [UIAlertAction actionWithTitle:@"cancel" style:UIAlertActionStyleDefault handler: ^(UIAlertAction *action){

        [self dismissViewControllerAnimated:YES completion:nil];}];

    //declare a "login" button

    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"login" style:UIAlertActionStyleDefault

        handler:^(UIAlertAction *action){

            NSString *uid = ((UITextField *) [alertController.textFields objectAtIndex:0]).text;

            NSString *pwd = ((UITextField *) [alertController.textFields objectAtIndex:1]).text;

            NSLog(@"account = %@",uid);

            NSLog(@"password = %@",pwd);}];

    //create first textfield

    [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField)

    {textField.placeholder = @"Login";}];

    //create second textfield

    [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField)

    {textField.placeholder = @"password";

        textField.secureTextEntry = YES;}];

    

    [alertController addAction:cacelAction];

    [alertController addAction:okAction];

    

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

                                  

}

@end

就是這樣囉！

END