iOS中利用inputView 弹出 picker

@property (readwrite) UIView *inputView;@property (readwrite) UIView *inputAccessoryView;- (BOOL)isUserInteractionEnabled{  return YES;}- (BOOL)canBecomeFirstResponder{  return YES;}

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(touchAction)];  [tap setNumberOfTouchesRequired:1];  [tap setNumberOfTapsRequired:1];  [self addGestureRecognizer:tap];