public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) {

  Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
  Canvas canvas = new Canvas(output);

  final int color = 0xff424242;
  final Paint paint = new Paint();
  final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
  final RectF rectF = new RectF(rect);

  paint.setAntiAlias(true);
  canvas.drawARGB(0, 0, 0, 0);
  paint.setColor(color);
  canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

  paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
  canvas.drawBitmap(bitmap, rect, rect, paint);

  return output;
}

bitmapShader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(bitmapShader);
@Override
public void draw(Canvas canvas) {
  Rect bounds = getBounds();
  canvas.drawRoundRect(fillRect, radius, radius, paint);
  if (mBorderWidth > 0) {
    if (mIsCircle) {
      canvas.drawCircle(bounds.width() / 2, bounds.height() / 2, radius, strokePaint);
    }
    else {
      canvas.drawRoundRect(fillRect, radius, radius, strokePaint);
    }
  }
}

DisplayImageOptions options = new DisplayImageOptions.Builder()
    .displayer(new RoundedBitmapDisplayer()) // display rounded bitmap
    .build();

<com.facebook.drawee.view.SimpleDraweeView
 android:id="@+id/my_image_view"
 android:layout_width="20dp"
 android:layout_height="20dp"
 fresco:fadeDuration="300"
 fresco:actualImageScaleType="focusCrop"
 fresco:placeholderImage="@color/wait_color"
 fresco:placeholderImageScaleType="fitCenter"
 fresco:failureImage="@drawable/error"
 fresco:failureImageScaleType="centerInside"
 fresco:retryImage="@drawable/retrying"
 fresco:retryImageScaleType="centerCrop"
 fresco:progressBarImage="@drawable/progress_bar"
 fresco:progressBarImageScaleType="centerInside"
 fresco:progressBarAutoRotateInterval="1000"
 fresco:backgroundImage="@color/blue"
 fresco:overlayImage="@drawable/watermark"
 fresco:pressedStateOverlayImage="@color/red"
 fresco:roundAsCircle="false"
 fresco:roundedCornerRadius="1dp"
 fresco:roundTopLeft="true"
 fresco:roundTopRight="false"
 fresco:roundBottomLeft="false"
 fresco:roundBottomRight="true"
 fresco:roundWithOverlayColor="@color/corner_color"
 fresco:roundingBorderWidth="2dp"
 fresco:roundingBorderColor="@color/border_color"
/>

@Override
protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  if (src != null && dst != null) {
    int w = getMeasuredWidth(), h = getMeasuredHeight();
    int sc = canvas.saveLayer(0, 0, w, h, null,
      Canvas.MATRIX_SAVE_FLAG | Canvas.CLIP_SAVE_FLAG | Canvas.HAS_ALPHA_LAYER_SAVE_FLAG
        | Canvas.FULL_COLOR_LAYER_SAVE_FLAG | Canvas.CLIP_TO_LAYER_SAVE_FLAG);
    canvas.drawBitmap(dst, 0, 0, paint); // 圆角矩形
    paint.setXfermode(mode); // new PorterDuffXfermode(PorterDuff.Mode.SRC_OUT);
    canvas.drawBitmap(src, 0, 0, paint); // 长方形
    paint.setXfermode(null);
    canvas.restoreToCount(sc);
  }
}

<FrameLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content">

  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <ImageView
      android:layout_width="match_parent"
      android:layout_height="150dp"
      android:src="@color/colorAccent"/>

    <TextView
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom"
      android:background="@color/black_alpha_50"
      android:padding="12dp"
      android:text="I am text"/>
  </LinearLayout>

  <cn.ieclipse.af.view.RoundMaskView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:radius="10dp"
    app:af_borderColor="@color/white"
    app:af_borderWidth="1dp"/>
</FrameLayout>