title: Kivy app for android loads but then disappears
body: <p>I am trying to build the clock application given in <a href="https://rads.stackoverflow.com/amzn/click/com/B00SYOBY2W" rel="nofollow noreferrer" rel="nofollow noreferrer">Kivy Blueprints</a> book with</p>
  
  <ul>
  <li>Architecture: x86_64</li>
  <li>OS: Linux Mint 5.0.0-32-generic</li>
  <li>Python: 3.8</li>
  <li>Kivy: 1.11.1</li>
  <li>Buildozer: 1.2.0</li>
  <li>main.py: <a href="https://github.com/mvasilkov/kb/blob/master/1_Clock/main.py" rel="nofollow noreferrer">https://github.com/mvasilkov/kb/blob/master/1_Clock/main.py</a></li>
  <li>clock.kv: <a href="https://github.com/mvasilkov/kb/blob/master/1_Clock/clock.kv" rel="nofollow noreferrer">https://github.com/mvasilkov/kb/blob/master/1_Clock/clock.kv</a></li>
  </ul>
  
  <p>Code works perfectly on the PC however when I build .apk with buildozer (<code>buildozer -v android debug logcat &gt; my_log.txt</code>) and run on Android device (Android 6.0 and 8.1), a splashscreen loads and then disappears.</p>
  
  <p>You can see the log file here: <a href="https://justpaste.it/5ytij" rel="nofollow noreferrer">https://justpaste.it/5ytij</a></p>
  
  <p>Can anyone point the problem please?</p>
  
  <p>UPDATE_1: As @inclement pointed out, I included only the build log from buildozer in the above message. I run <code>buildozer -v android debug deploy run logcat &gt; my_log.txt</code> this time. Android logs are here: <a href="https://justpaste.it/3sfmh" rel="nofollow noreferrer">https://justpaste.it/3sfmh</a></p>
  
  <p>UPDATE_2: I was using OpenJDK-8. I detected some issues in the earlier log that might be related with the Java so I installed Oracle JDK-8 and used it. Android log is here: <a href="https://justpaste.it/7rvuw" rel="nofollow noreferrer">https://justpaste.it/7rvuw</a> . If you take a look at it you can see crash logs like this;</p>
  
  <pre><code>--------- beginning of crash
  06-04 20:19:40.292  8815  8833 F libc    : Fatal signal 7 (SIGBUS), code 1, fault addr 0xc0011 in tid 8833 (Compiler driver)
  06-04 20:19:40.399  3815  3815 F DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
  06-04 20:19:40.399  3815  3815 F DEBUG   : UUID: e445db0b-d8e5-4910-9240-ffbdc085519e
  </code></pre>
  
  <p>Can someone decipher those lines?</p>
  
  <p>Thanks.</p>