英文:
How to enable capitalization on the virtual keyboard for an Android Compose TextField?
问题
我最近开始使用Compose来创建Android中的用户界面。到目前为止，我很喜欢它，但有时仍然难以找到正确的文档。如果这个问题很明显，我很抱歉！
在我目前正在开发的应用程序中，我有一个TextField，用于输入消息的标题。一切都运行正常，只是虚拟键盘默认情况下不会为第一个字母启用大写锁定。是否可以为TextField上的虚拟键盘启用大写锁定，如果可以，如何操作？ 这仅对TextField中的第一个字符必要（或者在一个句子中，它是一个标题字段，所以应该只有一个句子），如果用户想要更多大写字母，他们可以自己做 
所以，我基本上正在寻找的是EditText的android:inputType="textCapSentences" XML属性的Compose版本。
以下是我的TextField代码。一些背景信息，如果有帮助的话：TextField位于一个包含Text的Stack中。我用它来在TextField为空时显示提示。Stack位于一个Column中，而Column又位于包装整个屏幕的VerticalScroller中。我使用的是Android Studio 4.0 Canary 7。
// 保存TextField当前状态的模型
val modelTitle = +state { EditorModel() }
// 获取焦点和输入法管理器所需的上下文（即Activity）
val context = +ambient(ContextAmbient)
// 输入法管理器，用于隐藏键盘
val imm = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
TextField(
value = modelTitle.value,
modifier = ExpandedWidth.wraps(Spacing(5.dp)),
textStyle = TextStyle(
color = Color.White,
fontSize = 30.sp
),
onValueChange = {
modelTitle.value = it
},
keyboardType = KeyboardType.Text,
imeAction = ImeAction.Done,
onImeActionPerformed = {
// 获取当前位于焦点的视图，或创建一个
var view = (context as Activity).currentFocus
if (view == null)
view = View(context)
// 使用视图来隐藏键盘
imm.hideSoftInputFromWindow(view.windowToken, 0)
}
)
英文:
I've recently started moving to Compose to make my UIs in Android. So far I like it, but I'm still struggling to find the right documentation sometimes. So I'm sorry if this question is very obvious!
In the app I'm currently working on, I have a TextField that is used to enter the title of a message. Everything works fine, except that the virtual (on-screen) keyboard doesn't by default enable caps lock for the first letter. Is it possible to enable caps lock on the virtual keyboard for a TextField, and if so, how? It's only necessary for the first character in the TextField (or in a sentence, it's a title field so there should only be one sentence), if a user wants to capitalize more they are welcome to do it themselves So what I'm basically looking for is the Compose version of the android:inputType="textCapSentences" XML-attribute of the EditText.
My code for the TextField is below. Some background in case that helps: the TextField is inside a Stack which also holds a Text. I use that to display a hint in case the TextField is empty. The Stack is inside a Column, which in it's turn is inside a VerticalScroller that wraps the whole screen. I'm using Android Studio 4.0 Canary 7.
Thanks very much in advance!
// Model saving the current state of the TextField
val modelTitle = +state{EditorModel()}
// Context (aka the Activity) necessary to get the focus and input method manager
val context = +ambient(ContextAmbient)
// Input Method Manager, to hide the keyboard
val imm = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
TextField {
value = modelTitle.value,
modifier = ExpandedWidth.wraps(Spacing(5.dp)),
textStyle = TextStyle(
color = Color.White,
fontSize = 30.sp
),
onValueChange = {
modelTitle.value = it
},
keyboardType = KeyboardType.Text,
imeAction = ImeAction.Done,
onImeActionPerformed = {
// Get the view currently in focus, or make one
var view = (context as Activity).currentFocus
if(view == null)
view = View(context)
// Use the view to hide the keyboard
imm.hideSoftInputFromWindow(view.windowToken, 0)
},
}
答案1
得分: 27
你可以使用 keyboardOptions 和 KeyboardCapitalization（我在 alpha09 版本上）：
TextField(
...,
keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences)
)
英文:
You can use keyboardOptionsand KeyboardCapitalization (FYI I'm on alpha09):
TextField(
...,
keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences)
)
答案2
得分: 5
使用 1.0.0-beta02 版本，您可以使用 keyboardOptions 属性：
TextField(
keyboardOptions = KeyboardOptions.Default.copy(
capitalization = KeyboardCapitalization.Sentences)
)
英文:
With the 1.0.0-beta02 you can use the keyboardOptions attribute:
TextField(
keyboardOptions = KeyboardOptions.Default.copy(
capitalization = KeyboardCapitalization.Sentences)
)
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