我正在为 iphone 6 和 6Plus 开发自定义键盘。我已经为 shift key active-inactive 或 123 和 abc key 开发了逻辑。但我也想显示自定义符号，如所示的苹果键盘。请检查图片。

目前我可以将大写字母改为小写字母，将 123 改为 abc，但我该如何设置这个特殊字符。 注意:- 我在 github 上搜索了很多演示，但我无法在任何自定义键盘中看到特殊字符。

这是我对 uppercase 和 ABC-123 按钮的逻辑。

-(void)UpparCase:(UIButton*)sender   // To make caps or small letter
{

sender.selected=!sender.selected;
if(sender.selected)
{
    if(isPortrait)
    {

    [self.ObjKeyLayout.btnCapKey setBackgroundImage:[UIImage imageNamed:@"upparActive.png"] forState:UIControlStateNormal];
    }
    else
    {
        [self.ObjKeyLayout.btnCapKey setBackgroundImage:[UIImage imageNamed:@"Uppar_selctd_land.png"] forState:UIControlStateNormal];

    }

    for(UIButton *key in self.ObjKeyLayout.ArryCharKey)
    {


        NSString *uppercaseString = [[key currentTitle] uppercaseString];

        [key setTitle:uppercaseString forState:UIControlStateNormal];

        [key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];

    }
   }
   else
  {

    if(isPortrait)
    {

    [self.ObjKeyLayout.btnCapKey setBackgroundImage:[UIImage imageNamed:@"UpperCase.png"] forState:UIControlStateNormal];
    }
    else
    {
        [self.ObjKeyLayout.btnCapKey setBackgroundImage:[UIImage imageNamed:@"Uppar_land.png"] forState:UIControlStateNormal];

    }
    for(UIButton *key in self.ObjKeyLayout.ArryCharKey)
    {


        NSString *uppercaseString = [[key currentTitle] lowercaseString];

        [key setTitle:uppercaseString forState:UIControlStateNormal];

        [key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];

      }

   }
}

- (IBAction)action123:(UIButton*)sender // To set 123 and ABC
 {


 sender.selected=!sender.selected;

 if(sender.selected)
 {

    [self.ObjKeyLayout.btn123Key setTitle:@"ABC" forState:UIControlStateNormal];
            int i=0;

    for(UIButton *key in self.ObjKeyLayout.ArryCharKey)
    {

        [key setTitleColor:[UIColor clearColor] forState:UIControlStateNormal];
        NSLog(@"\n\n123isSelected\nI-%i\tArrayCharKey.Count:-%i",i,(int)self.ObjKeyLayout.ArryCharKey.count);
        if(isPortrait)
        {
             NSLog(@"\n\n123isSelected\nI-%i\tArrayCharKey.Count:-%i\nArraySpecialImageKey.Count-%i\n",i,(int)self.ObjKeyLayout.ArryCharKey.count,(int)arrspecialImageKey.count);
            [key setBackgroundImage:[UIImage imageNamed:[arrspecialImageKey objectAtIndex:i]] forState:UIControlStateNormal];




        }
        else{

            [key setBackgroundImage:[UIImage imageNamed:[arrSpecialIpad objectAtIndex:i]] forState:UIControlStateNormal];

        }

        [key setTitle:[NumKey objectAtIndex:i] forState:UIControlStateNormal];

        [key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];
        i++;
    }
  }
  else
     {
    [self.ObjKeyLayout.btn123Key setTitle:@"123" forState:UIControlStateNormal];
    int i=0;
    for(UIButton *key in self.ObjKeyLayout.ArryCharKey)
    {


        [key setTitleColor:[UIColor clearColor] forState:UIControlStateNormal];


        if(isPortrait)
        {
            [key setBackgroundImage:[UIImage imageNamed:[arrKeyImages objectAtIndex:i]] forState:UIControlStateNormal];
        }
        else
        {


            [key setBackgroundImage:[UIImage imageNamed:[keyIpad objectAtIndex:i]] forState:UIControlStateNormal];
        }
        ;

        NSString *uppercaseString = [arrAlphabet objectAtIndex:i];

        [key setTitle:uppercaseString forState:UIControlStateNormal];

        [key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];
        i++;
       // is123selected=NO;
      }
  }

}

最佳答案

你有两个数组，一个用于alphabetical，另一个用于numerical

NSArray *NumKey;

NSArray *arrAlphabet;

现在在 NumKey 中:

NumKey=[[NSArray alloc]initWithObjects:@"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"0", @"-", @"/", @":", @";", @"(", @")", @"$", @"&", @"@", @"\"", @".", @",", @"?", @"!",@"'",@"^", nil];

和arrAlphabet:

 arrAlphabet = [[NSArray alloc]initWithObjects:@"Q", @"W", @"E", @"R", @"T", @"Y", @"U", @"I", @"O", @"P", @"A", @"S", @"D", @"F", @"G", @"H", @"J", @"K", @"L", @"Z", @"X", @"C", @"V", @"B",@"N",@"M", nil];

键盘 123 或 ABC 中的 IBOutlet。

如下所示以编程方式添加事件。

[self.keybard.btnNumeric addTarget:self action:@selector(action123:) forControlEvents:UIControlEventTouchUpInside];

将123更改为ABC或将ABC更改为123的方法

- (IBAction)action123:(UIButton*)sender
{

    if([self.keybard.btnNumeric.titleLabel.text isEqualToString:@"123"])
    {
        [self.keybard.btnCapital setTitle:@"#+=" forState:UIControlStateNormal];

        [self.keybard.btnNumeric setTitle:@"ABC" forState:UIControlStateNormal];
        int i=0;
        for(UIButton *key in self.keybard.keyArray)
        {
            key.layer.cornerRadius = 6.0;

            [key setTitle:[NumKey objectAtIndex:i] forState:UIControlStateNormal];

            [key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];
            i++;
        }
    }
    else
    {
        [self.keybard.btnCapital setTitle:@"⬆️" forState:UIControlStateNormal];

        [self.keybard.btnNumeric setTitle:@"123" forState:UIControlStateNormal];

        int i=0;
        for(UIButton *key in self.keybard.keyArray)
        {

            strFirstCap = @"0";

            NSString *uppercaseString = [arrAlphabet objectAtIndex:i];

            [key setTitle:[uppercaseString lowercaseString] forState:UIControlStateNormal];

            [key addTarget:self action:@selector(pressKey:) forControlEvents:UIControlEventTouchUpInside];
            i++;
        }

    }

}

输出:

关于IOS 自定义键盘。如何在自定义键盘中设置特殊字符，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32048884/