Android code to send data from XML layout file to Custom View

 Following code sample demonstrates to set maxLength limit for text in Custom view EditText.

This restrict the user to enter max 30 chars in CustomView component .

main_activity.xml :

<com.view.ViewCustomComponent

    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:inputType="textCapWords"
    app:title="Address"
    app:required="false"
    app:hint="Address"
    app:maxlength="30"/>

attributes.xml :

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr name="title" format="string" />
    <attr name="required" format="boolean" />
    <attr name="hint" format="string" />
    <attr name="text" format="string" />
    <attr name="lines" format="integer" />
    <attr name="maxlength" format="integer" />

    <declare-styleable name="FormEditTextComponent">
        <attr name="title" />
        <attr name="required" />
        <attr name="hint" />
        <attr name="text" />
        <attr name="lines" />
        <attr name="maxlength" />
        <attr name="android:inputType" />
    </declare-styleable>
</resources>

ViewCustomComponent.kt :

class ViewCustomComponent : LinearLayout, IBaseFormComponent {
   
    private fun initialize(context: Context, attributeSet: AttributeSet? = null) {
        
     
        attributeSet?.let {
            
            val title = typedArray.getString(R.styleable.FormEditTextComponent_title)
            val text = typedArray.getString(R.styleable.FormEditTextComponent_text)
            val placeholder = typedArray.getString(R.styleable.FormEditTextComponent_hint)
            val lines = typedArray.getInt(R.styleable.FormEditTextComponent_lines, 0)
            val maxlength = typedArray.getInt(R.styleable.FormEditTextComponent_maxlength , 0)

            component_title.text = title
            component_text.setText(text, TextView.BufferType.NORMAL)
            component_text.hint = placeholder
            component_text.inputType = InputType.TYPE_TEXT_FLAG_CAP_SENTENCES

            /**
             * This CustomView used by many views and here the condition to set maxlength=50 only for
             * address1 , address2 , city of EmergencyProfile and no impact for other views
             */
            if(maxlength == 50) {
                component_text.filters = arrayOf<InputFilter>(InputFilter.LengthFilter(maxlength))
            } else {
                component_text.filters = arrayOf(InputEmojiFilter())
            }

          
        }
    }
    
}