Android: Blocking keys from virtual keyboard
<p>I want to allow the user to enter only certain characters to an EditText on a galaxy tab (Android 2.2) but block all other characters. An OnKeyListener seems not to react to the software keyboard.</p>

<p>PS: I dont want to block entire ranges of characters, like all digits or all special chars and so on. Let's say just the character 't'.</p>

<p>Please help. After an hour I couldn't find a solution.</p>
