为Android创建自定义键盘，如何使用键盘内的按钮隐藏它？

Question

我正在使用 Kotlin 和 Compose 创建适用于 Android（特别是 Wear OS）的自定义键盘。

按下键盘内的按钮时如何隐藏键盘？

在 Wear OS 中打字时，键盘占据整个屏幕，因此我认为需要该按钮。 预先感谢您！

我已经尝试过这个，但没有隐藏键盘：

val imeService = IMEService()
val inputConnection = LocalSoftwareKeyboardController.current?.let 
{
    imeService.currentInputConnection
}
inputConnection?.finishComposingText()
inputConnection?.sendKeyEvent(
    KeyEvent(
        KeyEvent.ACTION_DOWN,
        KeyEvent.KEYCODE_ENTER
    )
)
inputConnection?.performEditorAction(EditorInfo.IME_ACTION_GO)
inputConnection?.performEditorAction(EditorInfo.IME_ACTION_DONE)
inputConnection?.closeConnection()
imeService.hideKeyboard(view)

如何正确地将文本提交到文本字段？

Answer 1

您尝试一起使用 IMEService 和 LocalSoftwareKeyboardController 似乎混合了不以您所描述的方式直接交互的概念。相反，您应该专注于使用 LocalSoftwareKeyboardController 来控制键盘的可见性。

@Composable
fun CustomKeyboardWithButton() {
    val keyboardController = LocalSoftwareKeyboardController.current
    val focusRequester = remember { FocusRequester() }

    Column(
        modifier = Modifier
           .fillMaxSize()
           .padding(16.dp),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        // Your keyboard UI here
        Button(onClick = {
            // Assuming you have a way to get the current input connection
            // and it's stored in a variable named `inputConnection`
            inputConnection?.finishComposingText()
            inputConnection?.sendKeyEvent(KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER))
            inputConnection?.performEditorAction(EditorInfo.IME_ACTION_GO)
            inputConnection?.performEditorAction(EditorInfo.IME_ACTION_DONE)
            inputConnection?.closeConnection()
            keyboardController?.hide()
        }) {
            Text("Hide Keyboard")
        }
    }
}

关于正确将文本提交到文本字段，您通常可以通过 TextField 可组合项的 onValueChange 参数来处理此问题。这是一个简单的例子：

@Composable
fun TextFieldWithCommitExample() {
    var text by remember { mutableStateOf("") }

    TextField(
        value = text,
        onValueChange = { newText ->
            text = newText
            // Commit the text to the underlying input connection here
            // This might involve using the InputConnection to send the text
        },
        modifier = Modifier.focusRequester(focusRequester)
    )
}

如果有帮助请告诉我：D