android: how to make a Spinner invisible and then visible again?
<p>I have the following spinner:</p>

<pre><code>     Spinner spinner = (Spinner)findViewById(R.id.sp1);
</code></pre>

<p>and I initially make it invisible like this:</p>

<pre><code>     spinner.setVisibility(TRIM_MEMORY_BACKGROUND);
</code></pre>

<p>this does make the spinner invisible but how to make it visible again?</p>

<p>thanks in advance</p>
