Wear OS 上 Jetpack Compose 中的 BasicTextField 问题
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【中文标题】Wear OS 上 Jetpack Compose 中的 BasicTextField 问题【英文标题】:Problem with BasicTextField in Jetpack Compose on Wear OS 【发布时间】:2022-01-03 00:45:21 【问题描述】:我是 Compose 的新手,但在 Wear OS 上的输入文本字段有问题。 问题是我无法像通常在 android 上那样使用软键盘。此外,当我尝试在 XML 中实现相同的布局时 - 它起作用了。 因此,当我点击输入文本字段时,键盘会弹出然后隐藏。当我再次点击时 - 键盘会弹出并保持打开状态,但如果我尝试输入任何文本 - 输入字段(在键盘本身上)中不会出现任何内容,尽管输入的文本正在向下传递到 UI 上的输入文本字段。
当我点击输入文本字段以打开键盘时,这是我在模拟器上的日志中得到的:
2021-11-24 09:44:36.569 W/IInputConnectionWrapper: getTextBeforeCursor on inactive InputConnection
2021-11-24 09:44:36.571 W/IInputConnectionWrapper: getTextAfterCursor on inactive InputConnection
2021-11-24 09:44:36.649 W/RecordingIC: requestCursorUpdates is not supported
这是我在真实设备上得到的:
2021-11-24 09:35:39.783 W/IInputConnectionWrapper: getExtractedText on inactive InputConnection
2021-11-24 09:35:39.872 W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: setComposingRegion on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
2021-11-24 09:35:39.873 W/IInputConnectionWrapper: getExtractedText on inactive InputConnection
2021-11-24 09:35:39.882 W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
2021-11-24 09:35:39.883 W/IInputConnectionWrapper: getTextBeforeCursor on inactive InputConnection
2021-11-24 09:35:39.884 W/IInputConnectionWrapper: getTextAfterCursor on inactive InputConnection
2021-11-24 09:35:39.888 W/IInputConnectionWrapper: getSelectedText on inactive InputConnection
2021-11-24 09:35:39.890 W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
2021-11-24 09:35:39.891 W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
2021-11-24 09:35:39.891 W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
2021-11-24 09:35:39.891 W/IInputConnectionWrapper: beginBatchEdit on inactive InputConnection
2021-11-24 09:35:39.891 W/IInputConnectionWrapper: endBatchEdit on inactive InputConnection
这是我的“可组合”:
@OptIn(ExperimentalComposeUiApi::class)
@Composable
fun ActivationScreen()
var key by remember mutableStateOf("")
var isReady by remember
mutableStateOf(false)
Column(modifier = Modifier
.padding(40.dp)
.fillMaxSize()
)
val keyboardController = LocalSoftwareKeyboardController.current
val focusRequester = FocusRequester()
BasicTextField(
value = key,
onValueChange =
//isReady = it.length>11
key = it
,
singleLine = true,
keyboardOptions = KeyboardOptions.Default.copy(
imeAction = ImeAction.Done
),
keyboardActions = KeyboardActions(
onDone =
keyboardController?.hide()
),
modifier = Modifier
.size(140.dp, 20.dp)
.background(Color.White)
.align(Alignment.CenterHorizontally)
//.focusRequester(focusRequester)
//.focusOrder(focusRequester)
)
Text(
text = "ACTIVATION",
)
val status = if (isReady) "READY" else "NOT READY"
Text(
text = status,
)
【问题讨论】:
可穿戴设备上的文本输入并不是 Compose for WearOS 的优先事项,但预计最终会起作用。其他人报告了可重现的问题。在这里提出一个错误issuetracker.google.com/… 【参考方案1】:您应该避免在 Wear 上输入文本,但如果您确实需要,GBoard 活动是最好的激活方式。
见https://developer.android.com/reference/androidx/wear/input/RemoteInputIntentHelper.Companion#createActionRemoteInputIntent()
@Composable
fun TextInput()
val label = remember mutableStateOf("Start")
val launcher =
rememberLauncherForActivityResult(ActivityResultContracts.StartActivityForResult())
it.data?.let data ->
val results: Bundle = RemoteInput.getResultsFromIntent(data)
val ipAddress: CharSequence? = results.getCharSequence("ip_address")
label.value = ipAddress as String
Column()
Spacer(modifier = Modifier.height(20.dp))
Chip(
label = Text(label.value) ,
onClick =
)
Chip(
label = Text("Search with specific IP") ,
onClick =
val intent: Intent = RemoteInputIntentHelper.createActionRemoteInputIntent();
val remoteInputs: List<RemoteInput> = listOf(
RemoteInput.Builder("ip_address")
.setLabel("Manual IP Entry")
.wearableExtender
setEmojisAllowed(false)
setInputActionType(EditorInfo.IME_ACTION_DONE)
.build()
)
RemoteInputIntentHelper.putRemoteInputsExtra(intent, remoteInputs)
launcher.launch(intent)
)
【讨论】:
Yuri,不幸的是,我别无选择 - 该应用程序在独立模式下工作,需要非常基本的文本输入。你的方法正是我想要的。谢谢! @Dmitry 您是否必须导入或安装其他一些库?我无法导入 RemoteInputIntentHelper @FranciscoHanna 我确实导入了 androidx.wear.input.RemoteInputIntentHelper 为了让 wearableExtender 工作,你必须在 wear-input 依赖的 1.2.0+ 版本上。从今天开始,应该使用 1.2.0-alpha02 版本。在您的应用程序 gradle 文件中,确保您具有依赖项implementation 'androidx.wear:wear-input:1.2.0-alpha02'
。【参考方案2】:
根据@Yuri Schimke 的回答,这是一个接受占位符、值和 onChange 作为属性的通用组件实现。
import android.app.RemoteInput
import android.content.Intent
import android.os.Bundle
import android.view.inputmethod.EditorInfo
import androidx.activity.compose.rememberLauncherForActivityResult
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.foundation.layout.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import androidx.wear.compose.material.Chip
import androidx.wear.compose.material.Text
import androidx.wear.input.RemoteInputIntentHelper
import androidx.wear.input.wearableExtender
@Composable
fun TextInput(
placeholder: String,
value: String?,
onChange: (value: String) -> Unit,
)
val launcher =
rememberLauncherForActivityResult(ActivityResultContracts.StartActivityForResult())
it.data?.let data ->
val results: Bundle = RemoteInput.getResultsFromIntent(data)
val newValue: CharSequence? = results.getCharSequence(placeholder)
onChange(newValue as String)
Column()
Chip(
label = Text(if (value == null || value.isEmpty()) placeholder else value) ,
onClick =
val intent: Intent = RemoteInputIntentHelper.createActionRemoteInputIntent();
val remoteInputs: List<RemoteInput> = listOf(
RemoteInput.Builder(placeholder)
.setLabel(placeholder)
.wearableExtender
setEmojisAllowed(false)
setInputActionType(EditorInfo.IME_ACTION_DONE)
.build()
)
RemoteInputIntentHelper.putRemoteInputsExtra(intent, remoteInputs)
launcher.launch(intent)
)
注意:这需要androidx.wear:wear-input:1.2.0+
【讨论】:
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