键盘不适用于 uiactionsheet 中的文本字段

问题描述

我在 uiactionsheet 中添加了 textfeld 作为

-(void)showAction {printf("准备行动\n");UIActionSheet *asheet = [[UIActionSheet alloc] initWithTitle:@"New Sheet Name" delegate:self cancelButtonTitle:@"Cancel" corruptionButtonTitle:nil otherButtonTitles: nil];[asheet showInView:self.view];[asheet setFrame:CGRectMake(0, 70, 320,200)];UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 100,200, 25)];textField.borderStyle= UITextBorderStyleRoundedRect;[textField 成为FirstResponder];[textField setKeyboardType:UIKeyboardTypeAlphabet];[textField setKeyboardAppearance:UIKeyboardAppearanceAlert];textField.text="test" ;textField.delegate=self;[asheet insertSubview:textField atIndex:0];[textField 发布];[单张发布];}

但键盘不适用于此文本字段，但退格键有效.以前，当我使用 ios 3 时，它工作正常，但使用 ios 3.2 iphone 模拟器 4.0 不接受来自键盘的任何输入

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{printf("\n textFieldShouldBeginEditing\n ");返回是；}

这被称为

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{printf("shouldChangeCharactersInRange %s",[string UTF8String]);返回是；}

但是，此委托方法仅在退格时调用.

解决方案

就用这种方式对我有用

首先在你的类 .h 文件中设置 UITextFieldDelegate,UIActionSheetDelegate

#define TEXT_FIELD_TAG 9999

#define ACTION_SHEET_TAG 8888

-(IBAction)ForgotPassword:(id)sender{UIActionsheet *actFollowUp = [[UIActionSheet alloc] initWithTitle:@"请输入邮箱"委托:自己取消按钮标题:@"取消"破坏性按钮标题:@"好的"otherButtonTitles:nil];actFollowUp.tag=ACTION_SHEET_TAG;textFieldTime = [[UITextField alloc] initWithFrame:CGRectMake(60.f,320.f, 200.f, 30.f)];[textFieldTime setBackgroundColor:[UIColor whiteColor]];textFieldTime.delegate= self;[textFieldTime setKeyboardType:UIKeyboardTypeAlphabet];textFieldTime.keyboardAppearance= UIKeyboardAppearanceAlert;textFieldTime.tag=TEXT_FIELD_TAG;[actFollowUp addSubview:textFieldTime];UIWindow* appWindow = [UIApplication sharedApplication].keyWindow;[actFollowUp showInView:appWindow];[actFollowUp setFrame:CGRectMake(0.0,200.0, 320.0, 200.0)];[self performSelector: @selector(acceptInput:) withObject: actFollowUp];

}

 -(void)acceptInput: (UIActionSheet*)actionSheet{UITextField* textField = (UITextField*)[actionSheet viewWithTag:TEXT_FIELD_TAG];UIWindow* appWindow = [UIApplication sharedApplication].keyWindow;CGRect 框架 = textField.frame;[appWindow insertSubview:textField aboveSubview:actionSheet];frame.origin.y += 60.0;//将文本字段移动到与操作表上相同的位置textField.frame = 框架；}

i have added textfeld in uiactionsheet as

-(void)showAction {
 printf("getting action ready \n");
 UIActionSheet *asheet = [[UIActionSheet alloc] initWithTitle:@"New Sheet Name" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles: nil];
       [asheet showInView:self.view];
       [asheet setFrame:CGRectMake(0, 70, 320,200)];
       UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 100,200, 25)];
 textField.borderStyle= UITextBorderStyleRoundedRect;
 [textField becomeFirstResponder];
 [textField setKeyboardType:UIKeyboardTypeAlphabet];
 [textField setKeyboardAppearance:UIKeyboardAppearanceAlert];
 textField.text=@"test" ;
 textField.delegate=self;
 [asheet insertSubview:textField atIndex:0];
 [textField release];
 [asheet release];
}

but keypad is not working for this textfield however backspace is working.previously when i have been using ios 3 its workd fine but with ios 3.2 iphone simulator 4.0 does not accept any input from keypad

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
 printf("\n textFieldShouldBeginEditing\n ");
 return YES;
}

this gets called

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
 printf("shouldChangeCharactersInRange  %s ",[string UTF8String]);
 return YES;
}

however this delegate method gets called only for backspace.

解决方案

Just use this way it works for me

First set the the UITextFieldDelegate,UIActionSheetDelegate in your class .h file

#define TEXT_FIELD_TAG 9999

#define ACTION_SHEET_TAG 8888

-(IBAction)ForgotPassword:(id)sender{


     UIActionsheet  *actFollowUp = [[UIActionSheet alloc] initWithTitle:@"Please Enter Email"
                                                      delegate:self
                                                              cancelButtonTitle:@"Cancel"
                                                                      destructiveButtonTitle:@"OK"
                                                              otherButtonTitles:nil];

actFollowUp.tag=ACTION_SHEET_TAG;

textFieldTime = [[UITextField alloc] initWithFrame:CGRectMake(60.f,320.f, 200.f, 30.f)];
[textFieldTime setBackgroundColor:[UIColor whiteColor]];
textFieldTime.delegate= self;
[textFieldTime setKeyboardType:UIKeyboardTypeAlphabet];
textFieldTime.keyboardAppearance= UIKeyboardAppearanceAlert;
textFieldTime.tag=TEXT_FIELD_TAG;

[actFollowUp addSubview:textFieldTime];

UIWindow*   appWindow = [UIApplication sharedApplication].keyWindow;

[actFollowUp showInView:appWindow];
[actFollowUp setFrame:CGRectMake(0.0,200.0, 320.0, 200.0)];

[self performSelector: @selector(acceptInput:) withObject: actFollowUp];

}

 -(void)acceptInput: (UIActionSheet*)actionSheet
{

 UITextField*    textField = (UITextField*)[actionSheet viewWithTag:TEXT_FIELD_TAG];

UIWindow*       appWindow = [UIApplication sharedApplication].keyWindow;

CGRect          frame     = textField.frame;

[appWindow insertSubview:textField aboveSubview:actionSheet];

frame.origin.y += 60.0; // move text field to same position as on action sheet

textField.frame = frame;

}

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