更改UISearchBar /键盘搜索按钮标题

Question

在UISearchBar控件中,是否可以将键盘的搜索键标题更改为"完成"？

Answer 1

对于名为tablesearchbar的搜索栏:

// Set the return key and keyboard appearance of the search bar
        for (UIView *searchBarSubview in [tableSearchBar subviews]) {

            if ([searchBarSubview conformsToProtocol:@protocol(UITextInputTraits)]) {

                @try {

                    [(UITextField *)searchBarSubview setReturnKeyType:UIReturnKeyDone];
                    [(UITextField *)searchBarSubview setKeyboardAppearance:UIKeyboardAppearanceAlert];
                }
                @catch (NSException * e) {

                    // ignore exception
                }
            }
        }

Answer 2

至少对于iOS 8,简单地说:

    [self.searchBar setReturnKeyType:UIReturnKeyDone];

Answer 3

从iOS 7 beta 5开始,Run Loop的回答对我不起作用,但是这样做了:

for(UIView *subView in [searchBar subviews]) {
    if([subView conformsToProtocol:@protocol(UITextInputTraits)]) {
         [(UITextField *)subView setReturnKeyType: UIReturnKeyDone];
    } else {
        for(UIView *subSubView in [subView subviews]) {
            if([subSubView conformsToProtocol:@protocol(UITextInputTraits)]) {
                [(UITextField *)subSubView setReturnKeyType: UIReturnKeyDone];
            }
        }      
    }
}

Answer 4

一个更有用的提示,运行循环代码(在"@try")部分.

当文本字段为空时,这会启用"完成"按钮:

UITextField *tf = (UITextField *)searchBarSubview;
tf.enablesReturnKeyAutomatically = NO;

Answer 5

为Swift更改UISearchBar的返回键

searchBar.returnKeyType = UIReturnKeyType.done

枚举可用如下

public enum UIReturnKeyType : Int {

    case default
    case go
    case google
    case join
    case next
    case route
    case search
    case send
    case yahoo
    case done
    case emergencyCall
    @available(iOS 9.0, *)
    case continue
}