VectorDrawable was supported in DrawableIndicator.

app/src/main/java/com/example/zhpan/circleviewpager/fragment/OthersFragment.java

@@ -84,28 +84,29 @@ private void initRadioGroup() {
         radioGroupStyle.setVisibility(View.VISIBLE);
         radioGroupStyle.setVisibility(View.VISIBLE);
         radioGroupStyle.setOnCheckedChangeListener((group, checkedId) -> {
+            resetBannerViewPager();
             switch (checkedId) {
                 case R.id.rb_indicator_below:
-                    resetBannerViewPager();
                     setIndicatorBelowOfBanner();
                     break;
                 case R.id.rb_dash:
-                    resetBannerViewPager();
                     setupCustomIndicator();
                     break;
                 case R.id.rb_drawable:
-                    resetBannerViewPager();
-                    setDrawableIndicator();
+                    setDrawableIndicator(getDrawableIndicator());
+                    break;
+                case R.id.rb_vector_drawable:
+                    setDrawableIndicator(getVectorDrawableIndicator());
                     break;
             }
         });
         radioButton.performClick();
     }
 
-    private void setDrawableIndicator() {
+    private void setDrawableIndicator(IIndicator indicator) {
         mIndicatorView.setVisibility(View.INVISIBLE);
         mViewPager
-                .setIndicatorView(getDrawableIndicator())
+                .setIndicatorView(indicator)
                 .setIndicatorSlideMode(IndicatorSlideMode.NORMAL)
                 .setIndicatorVisibility(View.VISIBLE)
                 .setIndicatorGravity(IndicatorGravity.CENTER)
@@ -120,6 +121,14 @@ private IIndicator getDrawableIndicator() {
                 .setIndicatorSize(dp10, dp10, dp10, dp10);
     }
 
+    private IIndicator getVectorDrawableIndicator() {
+        int dp6 = getResources().getDimensionPixelOffset(R.dimen.dp_6);
+        return new DrawableIndicator(getContext())
+                .setIndicatorGap(getResources().getDimensionPixelOffset(R.dimen.dp_2_5))
+                .setIndicatorDrawable(R.drawable.banner_indicator_nornal, R.drawable.banner_indicator_focus)
+                .setIndicatorSize(dp6, dp6, getResources().getDimensionPixelOffset(R.dimen.dp_13), dp6);
+    }
+
     private void setIndicatorBelowOfBanner() {
         mIndicatorView.setVisibility(View.VISIBLE);
         mViewPager

app/src/main/java/com/example/zhpan/circleviewpager/view/DrawableIndicator.java

@@ -5,10 +5,14 @@
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Matrix;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
 import android.util.AttributeSet;
 
 import androidx.annotation.DrawableRes;
 import androidx.annotation.Nullable;
+import androidx.appcompat.widget.AppCompatDrawableManager;
+import androidx.core.graphics.drawable.DrawableCompat;
 
 import com.zhpan.bannerview.indicator.BaseIndicatorView;
 
@@ -27,6 +31,8 @@ public class DrawableIndicator extends BaseIndicatorView {
     //未选中图片的宽高
     private int mNormalBitmapWidth, mNormalBitmapHeight;
     private IndicatorSize mIndicatorSize;
+    private boolean normalCanResize = true;
+    private boolean checkCanResize=true;
 
     public DrawableIndicator(Context context) {
         this(context, null);
@@ -51,7 +57,7 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);
-        if (getPageSize() > 1 || mCheckedBitmap == null || mNormalBitmap == null) {
+        if (getPageSize() > 1 && mCheckedBitmap != null && mNormalBitmap != null) {
             for (int i = 1; i < getPageSize() + 1; i++) {
                 int left;
                 int top;
@@ -83,7 +89,7 @@ private void drawIcon(Canvas canvas, int left, int top, Bitmap icon) {
     private void initIconSize() {
         if (mCheckedBitmap != null) {
             if (mIndicatorSize != null) {
-                if (mCheckedBitmap.isMutable()) {
+                if (mCheckedBitmap.isMutable()&& checkCanResize) {
                     mCheckedBitmap.setWidth(mIndicatorSize.checkedWidth);
                     mCheckedBitmap.setHeight(mIndicatorSize.checkedHeight);
                 } else {
@@ -102,7 +108,7 @@ private void initIconSize() {
 
         if (mNormalBitmap != null) {
             if (mIndicatorSize != null) {
-                if (mNormalBitmap.isMutable()) {
+                if (mNormalBitmap.isMutable()&& normalCanResize) {
                     mNormalBitmap.setWidth(mIndicatorSize.normalWidth);
                     mNormalBitmap.setHeight(mIndicatorSize.normalHeight);
                 } else {
@@ -123,6 +129,14 @@ private void initIconSize() {
     public DrawableIndicator setIndicatorDrawable(@DrawableRes int normalDrawable, @DrawableRes int checkedDrawable) {
         mNormalBitmap = mCheckedBitmap = BitmapFactory.decodeResource(getResources(), normalDrawable);
         mCheckedBitmap = BitmapFactory.decodeResource(getResources(), checkedDrawable);
+        if (mNormalBitmap == null) {
+            mNormalBitmap = getBitmapFromVectorDrawable(getContext(), normalDrawable);
+            normalCanResize =false;
+        }
+        if (mCheckedBitmap == null) {
+            mCheckedBitmap = getBitmapFromVectorDrawable(getContext(), checkedDrawable);
+            checkCanResize =false;
+        }
         initIconSize();
         postInvalidate();
         return this;
@@ -143,6 +157,19 @@ public DrawableIndicator setIndicatorGap(int padding) {
         return this;
     }
 
+    public static Bitmap getBitmapFromVectorDrawable(Context context, int drawableId) {
+        Drawable drawable = AppCompatDrawableManager.get().getDrawable(context, drawableId);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+            drawable = (DrawableCompat.wrap(drawable)).mutate();
+        }
+        Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
+                drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
+        drawable.draw(canvas);
+        return bitmap;
+    }
+
     static class IndicatorSize {
         int normalWidth;
         int checkedWidth;

app/src/main/res/drawable/banner_indicator_focus.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#fff" />
+    <stroke
+        android:width="0.5dp"
+        android:color="#B5B5B5" />
+    <size
+        android:width="15dp"
+        android:height="6dp" />
+    <corners android:radius="5dp" />
+</shape>

app/src/main/res/drawable/banner_indicator_nornal.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <size
+        android:width="6dp"
+        android:height="6dp" />
+    <solid android:color="#fff" />
+    <stroke
+        android:width="0.5dp"
+        android:color="#B5B5B5" />
+    <corners android:radius="2dp" />
+</shape>

app/src/main/res/layout/fragment_others.xml

@@ -64,7 +64,16 @@
             android:layout_height="wrap_content"
             android:layout_marginEnd="15dp"
             android:layout_marginBottom="@dimen/dp_10"
-            android:text="Drawable Indicator"
+            android:text="Drawable Indicator(BitmapDrawable)"
+            android:textSize="@dimen/sp_16" />
+
+        <RadioButton
+            android:id="@+id/rb_vector_drawable"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="15dp"
+            android:layout_marginBottom="@dimen/dp_10"
+            android:text="Drawable Indicator(VectorDrawable)"
             android:textSize="@dimen/sp_16" />
 
     </RadioGroup>