iphone - iOS:如何访问 `UIKeyboard`？

我想获得指向UIKeyboard *keyboard的指针引用到屏幕上的键盘，以便可以向其添加透明的 subview ，以完全覆盖它，以达到disabling the UIKeyboard without hiding it的效果。

为此，我可以假设一次屏幕上只有一个UIKeyboard吗？即是一个单例吗？方法[UIKeyboard sharedInstance]在哪里。如果您通过类别实现该方法，布朗尼会指出。或者，如果您说服我，为什么只装一个键盘并给我一个更好的解决方案，这是一个坏主意，那将是更多的布朗尼点。

最佳答案

试试这个:

// my func
- (void) findKeyboard {

    // Locate non-UIWindow.
    UIWindow *keyboardWindow = nil;
    for (UIWindow *testWindow in [[UIApplication sharedApplication] windows]) {
        if (![[testWindow class] isEqual:[UIWindow class]]) {
           keyboardWindow = testWindow;
           break;
       }
    }

    // Locate UIKeyboard.
    UIView *foundKeyboard = nil;
    for (UIView *possibleKeyboard in [keyboardWindow subviews]) {

        // iOS 4 sticks the UIKeyboard inside a UIPeripheralHostView.
        if ([[possibleKeyboard description] hasPrefix:@"<UIPeripheralHostView"]) {
            possibleKeyboard = [[possibleKeyboard subviews] objectAtIndex:0];
        }

        if ([[possibleKeyboard description] hasPrefix:@"<UIKeyboard"]) {
           foundKeyboard = possibleKeyboard;
           break;
        }
    }
}

关于iphone - iOS:如何访问 `UIKeyboard`？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/6457239/