Android: How to set stroke color for vector drawable programmatically

Question

I am getting into a trouble with VectorDrawable in Android. I have a vector drawable file (.xml) and I want to draw it on bitmap. I managed to load this file and draw it on bitmap. I can change its fill color but the problem is that I cannot change its stroke and color.

Any helps would be appreciated!!!

Thank you!

Here is the drawable file:

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="312dp"
    android:height="312dp"
    android:viewportWidth="312.7"
    android:viewportHeight="312.699">
<path
    android:pathData="M306.35,266.34c0,22.09 -17.91,40.01 -40,40.01L46.35,306.35c-22.09,0 -40,-17.92 -40,-40.01v-219.99c0,-22.11 17.92,-40 40,-40h220c22.09,0 40,17.9 40,40L306.35,266.34z"
    android:strokeWidth="5"
    android:fillColor="@color/transparent"
    android:strokeColor="#231F20"/></vector>

Here is the way I load and fill the shape with blue color:

Drawable drawable = getResources().getDrawable(R.drawable.graph_rounded_rectangle);
        drawable.setBounds(0, 0, width, height);
        drawable.setColorFilter(new PorterDuffColorFilter(getResources().getColor(R.color.blue), PorterDuff.Mode.MULTIPLY));
        drawable.draw(canvas);

Answer 1

You can only access these vector properties in Java API

Vector : name
Vector : width
Vector : height
Vector : viewportWidth
Vector : viewportHeight
Vector : tint
Vector : tintMode
Vector : autoMirrored
Vector : alpha

for setting stoke of vector (color, size etc) by using java code is not reachable. You have to deal it in drawable.

Answer 2

Try to add group in your xml like this:

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="312dp"
    android:height="312dp"
    android:viewportWidth="312.7"
    android:viewportHeight="312.699">
    <group android:scaleX="1.0" android:scaleY="1.0">
        <path
            android:pathData="M306.35,266.34c0,22.09 -17.91,40.01 -40,40.01L46.35,306.35c-22.09,0 -40,-17.92 -40,-40.01v-219.99c0,-22.11 17.92,-40 40,-40h220c22.09,0 40,17.9 40,40L306.35,266.34z"
            android:strokeWidth="5"
            android:fillColor="@color/transparent"
            android:strokeColor="#231F20"/>
    </group>
</vector>

Reference here.