kotlin使用AutoCompleteTextView
时间: 2023-07-22 07:07:18 浏览: 100
在 Kotlin 中使用 AutoCompleteTextView 与使用 Java 并没有太大区别。你可以按照以下步骤来实现:
首先,在布局文件中添加 AutoCompleteTextView 组件:
```xml
<AutoCompleteTextView
android:id="@+id/composeEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="输入内容"
/>
```
然后,在 Kotlin 代码中找到该组件,并设置适配器:
```kotlin
val composeEditText = findViewById<AutoCompleteTextView>(R.id.composeEditText)
val suggestions = arrayOf("apple", "banana", "cherry", "date", "elderberry")
val adapter = ArrayAdapter(this, android.R.layout.simple_dropdown_item_1line, suggestions)
composeEditText.setAdapter(adapter)
```
最后,你可以添加文本变化监听器来处理用户输入的变化:
```kotlin
composeEditText.addTextChangedListener(object : TextWatcher {
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
// 在文本变化前的操作
}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
// 在文本变化时的操作
}
override fun afterTextChanged(s: Editable?) {
// 在文本变化后的操作
}
})
```
这样,你就可以在 Kotlin 中使用 AutoCompleteTextView 组件来实现自动补全的功能了。根据用户输入的内容,会给出匹配的建议。你可以根据需要进一步处理用户的输入,例如显示匹配结果、发送消息等。
阅读全文
相关推荐















