iOS自定义键盘切换效果

- (void)viewDidLoad {
 [super viewDidLoad];
 // Do any additional setup after loading the view, typically from a nib.
 self.title = @"小飞哥键盘";
 self.textField = [[UITextField alloc] initWithFrame:CGRectMake(50, 168, kScreenWidth - 100, 50)];
 self.textField.delegate = self;
 self.textField.backgroundColor = [UIColor greenColor];
 self.textField.placeholder = @"(默认系统键盘)";
  
 [self.view addSubview:self.textField];
  
 UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hidenKeyBoard)];
 [self.view addGestureRecognizer:tap];
  
 UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:@[@"键盘1",@"键盘2",@"键盘3",@"系统键盘"]];
 segment.frame = CGRectMake(0, 100, kScreenWidth, 50);
 [segment addTarget:self action:@selector(keyBoardTypeAction:) forControlEvents:UIControlEventValueChanged];
 [self.view addSubview:segment];
  
}
 
- (void)keyBoardTypeAction:(id )sender
{
 UISegmentedControl *seg = (UISegmentedControl *)sender;
 NSLog(@"intage = %ld", (long)seg.selectedSegmentIndex);
  
 if (seg.selectedSegmentIndex == 0) {
  self.xfg_keyboard = [[XFG_KeyBoard alloc] initWithNumber:@1];
  self.textField.inputView = self.xfg_keyboard;
  self.xfg_keyboard.delegate = self;
  [self.textField reloadInputViews];
 }
 if (seg.selectedSegmentIndex == 1) {
  self.xfg_keyboard = [[XFG_KeyBoard alloc] initWithNumber:@2];
  self.textField.inputView = self.xfg_keyboard;
  self.xfg_keyboard.delegate = self;
  [self.textField reloadInputViews];
  
 }
  
 if (seg.selectedSegmentIndex == 2) {
  self.xfg_keyboard = [[XFG_KeyBoard alloc] initWithNumber:@3];
  self.textField.inputView = self.xfg_keyboard;
  self.xfg_keyboard.delegate = self;
  [self.textField reloadInputViews];
 }
  
 if (seg.selectedSegmentIndex == 3) {
  self.textField.inputView = nil;
  [self.textField reloadInputViews];
 }
 
}