鍵盤彈出和回收通知

[[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(jianpantanchu:) name:UIKeyboardWillShowNotificationobject:nil];     [[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(jianpanhuishou:) name:UIKeyboardWillHideNotificationobject:nil];

//鍵盤彈出 - (void)jianpantanchu:(NSNotification*)notification {     NSDictionary*info = notification.userInfo;     NSValue*value = [info objectForKey:UIKeyboardFrameEndUserInfoKey];     CGSizesize = [value CGRectValue].size;     _backview.frame= CGRectMake(0, SCREEN_HEIGHT- STA_NAV_HEIGHT- 35*displayScale- size.height, SCREEN_WIDTH, 35*displayScale);      }

//鍵盤回收 - (void)jianpanhuishou:(NSNotification*)notification {     _backview.frame= CGRectMake(0, SCREEN_HEIGHT- STA_NAV_HEIGHT- 35*displayScale, SCREEN_WIDTH, 35*displayScale); }