ActivityNotFound
<p>When I put my apk into <code>/data/app</code> (use <code>eclipes</code> default setting), I can correctly open it with <code>adb</code> shell command</p>

<pre><code>adb shell am start -n com.ics.mm/com.ics.mm.MM_demoActivity
Starting: Intent { cmp=com.android.settings/.Settings }
</code></pre>

<p>But when I push it into <code>/system/app</code>, I cannot find it.</p>

<pre><code>adb shell am start -n com.ics.mm/com.ics.mm.MM_demoActivity
Starting: Intent { cmp=com.ics.mm/.MM_demoActivity }
Error type 3
Error: Activity class {com.ics.mm/com.ics.mm.MM_demoActivity} does not exist.
</code></pre>

<p>I use jni in my project.Does it concern?</p>
