iPhone上的UIAlertView中的UITextField - 如何使其响应？ [英] UITextField in UIAlertView on iPhone - how to make it responsive?

问题描述

我将一个UITextField放到UIAlertView中并将其移动，所以键盘不会覆盖它：

  [dialog setDelegate：self]; 
 [dialog setTitle：@输入名称]; 
 [dialog addButtonWithTitle：@Cancel]; 
 [dialog addButtonWithTitle：@OK]; 
 UITextField * nameField = [[UITextField alloc] initWithFrame：CGRectMake（20.0，45.0，245.0，25.0）]; 
 [nameField setBackgroundColor：[UIColor whiteColor]]; 
 [dialog addSubview：nameField]; 
 CGAffineTransform moveUp = CGAffineTransformMakeTranslation（0.0，100.0）; 
 [dialog setTransform：moveUp]; 
 [dialog show]; 
  

我还有以下代码来处理警报视图：

   - （void）alertView：（UIAlertView *）alert clickedButtonAtIndex：（NSInteger）buttonIndex {
 NSLog（@％d，（int）buttonIndex ）; 
 if（buttonIndex == 1）{// OK push 
 NSLog（[alert textField] .text）; //不记录任何东西
} else {
 //取消推送
}} 
  

b $ b

我也有一个UIAlertViewExtended.h文件，其中包含：

  @class UITextField，UILabel; 
 
 @interface UIAlertView（扩展）
 
  - （UITextField *）textField; 
 
 @end 
  

我的问题是如何获取文本

解决方案

/ div>

对于那些可能关心的人，这里有一个工作解决方案：

  UIAlertView * dialog = [[UIAlertView alloc]在里面]; 
 [dialog setDelegate：self]; 
 [dialog setTitle：@输入名称]; 
 [dialog setMessage：@]; 
 [dialog addButtonWithTitle：@Cancel]; 
 [dialog addButtonWithTitle：@OK]; 
 
 nameField = [[UITextField alloc] initWithFrame：CGRectMake（20.0，45.0，245.0，25.0）]; 
 [nameField setBackgroundColor：[UIColor whiteColor]]; 
 [dialog addSubview：nameField]; 
 CGAffineTransform moveUp = CGAffineTransformMakeTranslation（0.0，100.0）; 
 [dialog setTransform：moveUp]; 
 [dialog show]; 
 [dialog release]; 
 [nameField release]; 
  

确保您已创建UITextField * nameField;在您的.h文件中，然后您可以通过执行以下操作获取用户输入的文本：
inputText = [nameField text];

void）alertView：（UIAlertView *）alert clickedButtonAtIndex：（NSInteger）buttonIndex method。

重要注意事项 c $ c> CGAffineTransform 是自动完成的，所以如果你只定位4.0+，你可以离开这一点。否则，您需要检查您所使用的操作系统，并相应地处理。

I placed a UITextField into a UIAlertView and moved it up so the keyboard wouldn't cover it up with the following code:

[dialog setDelegate:self];
[dialog setTitle:@"Enter Name"];
[dialog addButtonWithTitle:@"Cancel"];
[dialog addButtonWithTitle:@"OK"];
UITextField * nameField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 45.0, 245.0, 25.0)];
[nameField setBackgroundColor:[UIColor whiteColor]];
[dialog addSubview:nameField];
CGAffineTransform moveUp = CGAffineTransformMakeTranslation(0.0, 100.0);
[dialog setTransform: moveUp];
[dialog show];

I also have the following code to deal with the alert view:

- (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex{    
    NSLog(@"%d", (int) buttonIndex);
    if (buttonIndex == 1) { // OK pushed
        NSLog([alert textField].text); // does not log anything
    } else {
        // Cancel pushed
}}

I also have a UIAlertViewExtended.h file that contains:

@class UITextField, UILabel;

@interface UIAlertView(Extended)

-(UITextField *)textField;

@end

My question is how do I get the text the user entered and how do I dismiss the keyboard?

Thanks, Ben

解决方案

For those who may care, here's a working solution:

UIAlertView* dialog = [[UIAlertView alloc] init];
[dialog setDelegate:self];
[dialog setTitle:@"Enter Name"];
[dialog setMessage:@" "];
[dialog addButtonWithTitle:@"Cancel"];
[dialog addButtonWithTitle:@"OK"];

nameField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 45.0, 245.0, 25.0)];
[nameField setBackgroundColor:[UIColor whiteColor]];
[dialog addSubview:nameField];
CGAffineTransform moveUp = CGAffineTransformMakeTranslation(0.0, 100.0);
[dialog setTransform: moveUp];
[dialog show];
[dialog release];
[nameField release];

Make sure you've created UITextField * nameField; in your .h file, then you can get at the text the user typed in by doing: inputText = [nameField text];

in the - (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex method.

important note: for iOS 4.0+, the CGAffineTransform is done automatically so you can leave that bit out if you're only targeting 4.0+. Otherwise, you will need to check which OS you are on and handle it accordingly.

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