背景图像圆角

Question

I am have a background image that changes and on top of it I am using rounded corners. Is there a way to hide the corners of the image. Below is a screen shot of my widget with the corners showing.

EDIT CODE:

Bitmap bm1 = BitmapFactory.decodeResource(context.getResources(), Utilities.getDrawableId(ACCUWX.Icons.AL_WIDGETBG_ICON_MAP[Integer.parseInt(wdm.iconCode)]));
Bitmap roundedBm = Utilities.getRoundedCornerBitmap(bm1);
toRet.setImageViewBitmap(R.id.widget_bg, roundedBm);

method call:

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {
        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);
        final float roundPx = 12;

        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;
      }

To show that I have a background image and rounded corners on top of it made from a drawable utilizing xml shape:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/widget_bg_rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clipChildren="true">
    <ImageView
        android:id="@+id/widget_bg"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/al_widgetbg_06_07_08"
        android:scaleType="center" />

    <LinearLayout 
        android:id="@+id/current_layout"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:focusable="true"
        android:weightSum="8">
        <RelativeLayout
            android:id="@+id/city_time_rl"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="2.5"
            android:background="@drawable/rounded_corners_top"
            android:clipChildren="true">
            <TextView
                android:id="@+id/city" 
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:text="MECHANICSBURG"
                android:textSize="16dp"
                android:textColor="@color/dk_blue"
                />

Answer 1

您应该能够通过在透明的背景上绘制圆形矩形之前使背景透明来实现此目的。