ZZZkeyboard
###一款自定义的用于输入车牌号码的键盘
使用
ZZZKeyboard *keyboard = [[ZZZKeyboard alloc]initWithFrame:CGRectMake(0, 0, 375, 240)];
UITextField *textField = [[UITextField alloc]initWithFrame:CGRectMake(30, 30, 300, 300)];
textField.placeholder = @"请输入xxxxx";
textField.inputView = keyboard;