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]; } }