Marque text not moving if texts are less in android

Question

I am using below code, it's working fine for big statement, but not for small text like only "hello".

<TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ellipsize="marquee"
            android:marqueeRepeatLimit="marquee_forever"
            android:maxLines="1"
            android:scrollHorizontally="true"
            android:singleLine="true"
            android:text="this_bill_has_some_unipay_points_promotion"/>

Answer 1

You should call TextView.isSelected = true to start the text moving.

Edit: Working solution

<TextView
     android:id="@+id/textView"
     android:layout_width="match_parent"             
     android:layout_height="48dp"
     android:ellipsize="marquee"
     android:gravity="center_vertical"
     android:scrollHorizontally="true"
     android:singleLine="true"
     android:textColor="@android:color/white" />

Extension function

fun TextView.setMovingText(text: String) = this.post {
            val textWidth = this.paint.measureText(text)
            val spaceWidth = this.paint.measureText(" ")
            val requiredAdditionalSpace = ((this.width - textWidth) / spaceWidth).toInt()
            this.text = StringBuilder(text).apply {
                for (i in 0..requiredAdditionalSpace) {
                    append(" ")
                }
            }
            this.isSelected = true
        }

How to use

textView.setMovingText("Hey")

I just wanted to show a working solution. Also you can (should) modify for better performance and check for negative values.