How to set the colour of the selction background of an android TextView?

In the following picture you can see an android.widget.EditText (left half) where some text is selected:

Strange thing is: You can see the start开发者_运维问答 and end marker of the selection but the actual selection is not highlighted.

I wonder what I forgot or what I did wrong here. How can I ensure that the selected area is highlighted using an appropriate background colour?

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for more on StateList, refer this http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList

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After a little more experimenting I found the following:

• the colour of the selection background is indeed set by android:textColorHighlight.
• The selection is not highlighted when the entry field is in read only mode.

So for me there is nothing to be done about it and i just have to live without a highlighted selection.