Kotlin 在动态添加的编辑文本上设置属性

Kotlin set attributes on a dynamically added edittext

我正在尝试学习 Kotlin,我想创建多个 EditText 动态地彼此相邻放置在 android phone.

EditText 的数量取决于用户必须猜测的单词长度。因此,如果单词是 dog,则应向用户显示单词中每个字母的 EditText

所以我做了这样的事情。

for (letter in word) {
    val editText = EditText(this)
    ...
}

然后将它们附加到线性布局。 但是我想在附加它之前在编辑文本上设置一些 属性,为此我完全迷路了。

谁能给我指出正确的方向。

请帮助我,我很沮丧...:-)

如果您知道要将哪些属性添加到编辑文本中,您可以为其创建一个 XML 布局。您可以设置文本颜色、背景等,然后展开布局。

所以在你的 for 循环中你会做这样的事情

    val inflater = LayoutInflater.from(this)
    val editText = inflater.inflate(R.layout.YourCustomEditText, null, false) as EditText
// add to editText to your linearLayout as you're already doing

然后 YouCustomEditText 将是这样的 xml 文件

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/edit_text_vew"
    android:layout_width="wrap_content"
    android:layout_height="35dp"
    android:background="@color/white"
    android:hint="hint"
    android:orientation="vertical"
    android:padding="4dp"
    android:paddingStart="8dp"
    android:paddingTop="4dp"
    android:paddingEnd="8dp"
    android:textColor="@color/colorAccent"></EditText>

使用 EditText 创建 xml 布局

input_edittext_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/input_letter_edittext"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:padding="8dp"
/>

在您想要使用 id 显示的主布局中添加一个 LinearLayout

activity_words.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".WordsActivity">
<LinearLayout
    android:id="@+id/letter_input_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    />

</LinearLayout>

WordsActivity.kt

class WordsActivity : AppCompatActivity() {

val wordlist = listOf("Cat", "dog", "Tiger", "Elephant")
lateinit var wordlayout: LinearLayout
val currentEditTextList = mutableListOf<EditText>()

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_words)
    wordlayout = findViewById<LinearLayout>(R.id.letter_input_layout)
    findMatchedString("Elephant")//example calling from here 

}
//String passed as argument to compare from word list
fun findMatchedString(inputString: String){
    wordlist.forEach {
       if(it == inputString){
           addEditTextToLayout(inputString)
       }else{
           //Handle your logic to handle else case
       }
    }
}

fun addEditTextToLayout(matchedString: String) {

    //first adding EditText objects to list
    matchedString?.let {
        it.forEachIndexed { index, element ->
            val editText = getInputEditText()
            editText.tag = index
            editText.setText(element.toString())//This line added to check the 
        each letter on the each EditText separately
            currentEditTextList.add(editText)
        }
    }

    //second adding each EditText from list to layout
    currentEditTextList?.let {
        if (it.size > 0) {
            it.forEachIndexed { index, element ->
                element.tag = index
                wordlayout.addView(element)
            }
        }
    }
}


fun getInputEditText() : EditText{
return layoutInflater.inflate(R.layout.input_edittext_layout, null, false) as 
EditText
    }
  }