Specific EditText Android

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http://stackoverflow.com – I'm new at Android, and almost haven't any work with EditText view, but still i received image with some EditText that i must use. I saw some similar EditText in custom dialog from official Android developer page (Figure 5). As you can see, there are some underlines, in each EditText. First i thought, that EditText, with such underline, is default View. But when i tried to make such EditText component, i faced problem, that default EditText haven't any underlines, and it's just a simple rectangle, without any images inside... I tried to make this component another background (creating (HowTos)