Question

我有一个位于视图底部的搜索栏。

如何设置UIKeyboard的位置？

Answer 1

使用CGAffineTransform 至少从我观察到并测试过4.0之前的OS版本需要定义变换，从操作系统4.0和更高的操作系统正在处理键盘定位。这就是为什么我在设置Transform之前检查systemVersion。

    if ([[[UIDevice currentDevice] systemVersion] floatValue] < 4.0) {
        CGAffineTransform translate = CGAffineTransformMakeTranslation(xx.0, yy.0);//use x,y values
        [self setTransform:translate];
    }

Answer 2

您无法设置键盘的位置，您只能询问键盘的位置并适当地组织其他视图。

// Somewhere you need to register for keyboard notifications

- (void)viewDidLoad {
    [super viewDidLoad];

    // Register for keyboard notifications
    NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
    [defaultCenter addObserver:self selector:@selector(keyboardWasShown:)
                          name:UIKeyboardDidShowNotification object:nil];
    //... do something
}

// At some point you need to unregister for notifications
- (void)viewWillHide {
    NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
    [defaultCenter removeObserver:self];
}

- (void)keyboardWasShown:(NSNotification*)aNotification
{
    // Caution, this notification can be sent even when the keyboard is already visible
    // You'll want to check for and handle that situation
    NSDictionary* info = [aNotification userInfo];

    NSValue* aValue = [info objectForKey:UIKeyboardFrameEndUserInfoKey];

    CGSize keyboardSize = [aValue CGRectValue].size;

    //... do something
}

Answer 3

您没有设置键盘的位置。系统会自动为您完成。

您需要做的是使用键盘通知将搜索栏移动到可见部分

如何设置UIKeyboard的位置

3 个答案: