UISearchController不會將我的UITableView向上移動

Question

正如你所看到的，我的UITableView的滾動是最大的下降，但我的表不完全可見。爲什麼？我用UITableViewController

Answer 1

使用通知可能是獲取鍵盤高度最簡單的方式爲我評論集contentInset屬性滾動鍵盤上方的實現代碼如下，一旦它隱藏設置爲零昆蟲，

- (void)viewWillAppear:(BOOL)animate { 
    [super viewWillAppear:animate]; 
    // Do any additional setup after loading the view. 
    [[NSNotificationCenter defaultCenter] addObserver:self 
      selector:@selector(keyboardShown:) 
        name:UIKeyboardWillShowNotification object:nil]; 
    [[NSNotificationCenter defaultCenter] addObserver:self 
      selector:@selector(keyboardHidden:) 
        name:UIKeyboardWillHideNotification object:nil]; 
    } 

- (void)viewWillDisappear:(BOOL)animated 
    { 
     //remove notifications 
    } 

- (void)keyboardShown:(NSNotification*)aNotification 
    { 
    NSDictionary* info = [aNotification userInfo]; 
    CGRect keyboardRect = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue]; 

    float height = keyboardRect.size.height; 
    tableView.contentInset = UIEdgeInsetsMake(10, 0, height, 0); 
    } 


    - (void)keyboardHidden:(NSNotification*)aNotification 
    { 
     [UIView animateWithDuration:0.2 animations:^{ 
     table.contentInset = UIEdgeInsetsMake(0, 0, 0, 0); 
     }]; 
    } 

Answer 2

我建議在用戶開始滾動時儘快隱藏鍵盤。 Apple在他們自己的應用中實現了這種行爲。要做到這一點，添加在你的表視圖控制器：

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { 
    [self.searchBar resignFirstResponder]; 
} 

這需要填充與搜索欄中searchBar屬性。

Answer 3

很好的替代奧爾特溫的答案是使用的UIScrollViewkeyboardDismissMode屬性：

tableView.keyboardDismissMode = .OnDrag