- //宏定义屏幕的宽和高
//屏幕宽度
define kwidth self.view.frame.size.width
//键盘的高度
define Kheight 216
2 我们先定义两个textField:用来接收键盘的输入值
UITextField * textfield2 = [[UITextField alloc] initWithFrame:CGRectMake(170, 240, 180, 40)];
textfield2.tag = 222;
textfield2.backgroundColor = [UIColor orangeColor];
textfield2.layer.cornerRadius = 5;
textfield2.layer.masksToBounds = YES;
textfield2.clearButtonMode = UITextFieldViewModeAlways;
[self.view addSubview:textfield2];
UITextField * textfield3 = [[UITextField alloc] initWithFrame:CGRectMake(170, 300, 100, 40)];
textfield3.tag = 223;
textfield3.placeholder = @"验证码";
textfield3.layer.cornerRadius = 5;
textfield3.layer.masksToBounds = YES;
textfield3.clearButtonMode = UITextFieldViewModeAlways;
textfield3.backgroundColor = [UIColor whiteColor];
[self.view addSubview:textfield3];
3 //键盘的辅助视图
//设置辅助视图的大小
UIView * grayView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 40)];
//辅助视图的背景颜色
grayView.backgroundColor = [UIColor lightGrayColor];
//.注意!!关键给键盘设置辅助视图
textfield2.inputAccessoryView = grayView;
textfield3.inputAccessoryView = grayView;
- //给键盘设置输入视图
UIView * whiteView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 216)];
whiteView.backgroundColor = [UIColor whiteColor];
//.注意!!关键给键盘设置输入视图
textfield2.inputView = whiteView;
textfield3.inputView = whiteView;
//注意!!!!!!在这里我们用数组来接收1-9的值
NSArray * array = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"×",@"0",@"return"];
//X号操作删除最后一个字符
//return 收回键盘
NSInteger index=0;
//设置每一行走的次数
for (int i = 0; i<4; i++) {
//设置每一趟走的次数
for (int j = 0; j<3; j++) {
//设置按钮的位置---关键
UIButton * button = [[UIButton alloc] initWithFrame: CGRectMake(kwidth / 3 * j, Kheight/4 * i, kwidth/3, Kheight / 4)];
//数组按钮的颜色
button.backgroundColor = [UIColor whiteColor];
//数组按钮上的文字
[button setTitle:array[index] forState:UIControlStateNormal];
index++;//将数组的元素进行累加统计
//设置字体颜色
[button setTitleColor:[UIColor purpleColor] forState:UIControlStateNormal];
//加粗字体
button.titleLabel.font = [UIFont boldSystemFontOfSize:20];
//设置边框的颜色
button.layer.borderColor = [UIColor grayColor].CGColor;
//设置边框的宽度
button.layer.borderWidth = 3;
//添加事件
//设置1-9的数字方法
if (i<3) {
[button addTarget:self action:@selector(b1Action:) forControlEvents:UIControlEventTouchUpInside];
}
else if(i == 3 && j == 0){
//叉号 用来删除字符
[button addTarget:self action:@selector(deleteChar:) forControlEvents:UIControlEventTouchUpInside];
}
else if( i == 3 && j ==1)
{ //设置 0 的位置
[button addTarget:self action:@selector(b1Action:) forControlEvents:UIControlEventTouchUpInside];
}
else{
//return 用来收回键盘
[button addTarget:self action:@selector(takeBackKeyboard:) forControlEvents:UIControlEventTouchUpInside];
}
[whiteView addSubview:button];
}
}
}
pragma Mark ---拼接字符串
-(void)b1Action:(UIButton *)b1{
//点击当前按钮 就把按钮上的文字 拼接到输入框中
//1.获取输入框
UITextField *textField2 = (UITextField *) [self.view viewWithTag:222];
if (textField2.isFirstResponder == YES) {
textField2.text = [textField2.text stringByAppendingFormat:@"%@",b1.titleLabel.text];
}else {
UITextField *textField3 = (UITextField *) [self.view viewWithTag:223];
textField3.text = [textField3.text stringByAppendingFormat:@"%@",b1.titleLabel.text];
}
}
pragma Mark ---删除最后一个字符
-(void)deleteChar:(UIButton *)button{
//2
UITextField *textField2 = (UITextField *) [self.view viewWithTag:222];
if (textField2.isFirstResponder == YES) {
if (textField2.text.length >0) {
textField2.text = [textField2.text substringToIndex:textField2.text.length -1];
}
}
//3
else{
UITextField *textField3 = (UITextField *) [self.view viewWithTag:223];
if (textField3.text.length >0) {
textField3.text = [textField3.text substringToIndex:textField3.text.length -1];
}
}
}
pragma Mark ---收回键盘
-(void)takeBackKeyboard:(UIButton *)button{
UITextField *textField2 = (UITextField *) [self.view viewWithTag:222];
//释放第一响应者 也就是收回键盘
if (textField2.isFirstResponder == YES) {
[textField2 resignFirstResponder];}
else{
UITextField *textField3 = (UITextField *) [self.view viewWithTag:223];
[textField3 resignFirstResponder];
}
}
效果如图:
