android 编辑框过滤文本

public class EditOnKeyListener implements TextWatcher
{

	@Override
	public void afterTextChanged(Editable s)
	{
		// TODO Auto-generated method stub
		if (s.length() > 0)
		{
			int pos = s.length() - 1;
			char c = s.charAt(pos);
			if (c == ' ' || c == '\n')
			{
				//
				s.delete(pos, pos + 1);
			}
		}
	}

	@Override
	public void beforeTextChanged(CharSequence s, int start, int count,
			int after)
	{
		// TODO Auto-generated method stub

	}

	@Override
	public void onTextChanged(CharSequence s, int start, int before, int count)
	{
		// TODO Auto-generated method stub

	}

}