iphone 自定义键盘(转)

复制代码

1. [[NSNotificationCenter defaultCenter] addObserver:self
2.                                              selector:@selector(keyboardWillShow:)
3.                                                  name:UIKeyboardWillShowNotification
4.                                                object:nil];

核心思路代码：

复制代码 - (void)keyboardWillShow:(NSNotification *)note {       UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];//知识点     for(int i=0; i<[tempWindow.subviews count]; i++)     {         keyboard = [tempWindow.subviews objectAtIndex:i];         if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES)         {             [keyboard setFrame:CGRectMake(0, 460, 320, 345)];             [self congfigKeypad];                          [keyboard addSubview:keyPadView1];                      }     } }

比如配置方法可以是这样：

复制代码 -(void)congfigKeypad {    SearBtn *one = [[SearBtn alloc] initWithFrame:CGRectMake(81, 3, kNumPadW, kNumPadH) index:1 ContextString:@"1" type:kNumPadType];     [one setImage:[UIImage imageNamed:@"1.png"] forState:UIControlStateNormal];     [one addTarget:self action:@selector(buttonClickAtIndex:) forControlEvents:UIControlEventTouchUpInside];         //......略 }

添加NSMutalbeString作为文本域字串的容器，点击button后append的button对应的字串。

复制代码 - (void)buttonClickAtIndex:(id)sender {     SearBtn *btnItem = (SearBtn*)sender;     NSString *str = btnItem->btnText;     [s_text appendString:str];     [sBar setText:s_text]; }

;

再实现一个deleteChar的方法作为退格键
思路：

复制代码 if ([s_text length] > 0)     {         NSRange rang;         rang.location = [s_text length] - 1;         rang.length = 1;         [s_text deleteCharactersInRange:rang];     }

现在点击各种文本域，应该就可以现实自己的键盘了。

继续优化
用textfield的代理方法控制键盘的字串类型，长度，和响应消失

 

http://www.cocoachina.com/bbs/read.php?tid-12429.html