How to apply rounded corner to a view based on its width in Android Kotlin

Question

I am working on a custom Progress bar as photos below:

Basically, I created a drawable xml background file:

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid
        android:color="@color/jungleGreen"/>
    <corners
        android:bottomLeftRadius="40dp"
        android:topLeftRadius="40dp"/>
</shape>

Then I applied it to the view that I am using:

<View
            android:id="@+id/progress_bar_placeholder_view"
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_marginEnd="45dp"
            android:background="@drawable/background_filled_patronage_progressbar"
            app:layout_constraintTop_toTopOf="parent"/>

It is totally fine and I can achieve scenario 1 and 2, but when the bar is getting closer to the end, how can I programmatically set the rounded corner for the top right and the bottom right part of the view until it looks like in photo 3?

Thanks.

Answer 1

try this

    public static void customView(View v, int backgroundColor, int borderColor)
 {
            GradientDrawable shape = new GradientDrawable();
            shape.setShape(GradientDrawable.RECTANGLE);
            shape.setCornerRadii(new float[] { 8, 8, 8, 8, 0, 0, 0, 0 });
            shape.setColor(backgroundColor);
            shape.setStroke(3, borderColor);
            v.setBackground(shape);
        }

Source : How to create android shape background programmatically?