Problem with 9 patch image as background

问题

I have a list view structure, with Relative layout that uses alternating background images for odd/even elements. I'm trying to set the background drawable dynamically by calculating the position. It worked fine with the normal bitmap. But when I tried to use the ninepatch image it breaks the UI, all the elements get distorted. What am I doing wrong? Could it be how the ninepatch image is created or is there a different way to use a ninepatch image compared to a normal bitmap.

My List View XML goes like this

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="fill_parent"
       android:layout_height="wrap_content" android:id="@+id/id01"
       android:background="@drawable/my_9patch_bg_image">
       <ImageView  />
       <RelativeLayout>
         <ImageView  />
          <TextView  />
          <TextView  />
       </RelativeLayout>
</RelativeLayout>

---

May be the solution here might work for my problem. It's exact though I have to try it.

回答1:

Since nobody answered you for a year now... I had the same issue you need to setpadding of zero (even if you don't need it).

Good luck.

回答2:

You can use nine patch in the same way you use a normal drawable. I assume you have a problem with the 9 patch itself. In the /tools directory of your android sdk you have the draw 9 patch tool. It will help you to correct your 9 patch drawable and to preview it for different sizes of your view.

回答3:

select all sides except corners as the stretching edges

回答4:

you can use this xml as background to show as cardview.

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:dither="true" android:shape="rectangle">
        <corners android:radius="2dp" />
        <solid android:color="#e2e2e2" />
    </shape>
</item>
<item android:bottom="2dp">
    <shape android:dither="true" android:shape="rectangle">
        <corners android:radius="2dp" />
        <solid android:color="@color/white" />
    </shape>
</item>

来源：https://stackoverflow.com/questions/5040720/problem-with-9-patch-image-as-background