I found another intermittent problem when calling sendEvent(). About 5% of the time, this happens:
10-18 05:26:18.994: A/libc(1421): Fatal signal 11 (SIGSEGV) at 0xb1d84dbc (code=2), thread 1421
I’m really hoping that it’s related to the other issues I reported and that Corona can fix them all at once.
dchan,
I have a simple sample project that reproduces the NullPointerException at CoronaLua.java line 271. I will send it to you now.
Hi,
The issue seems to be that the lua state object isn’t created yet when you’re trying to send the event. Please try doing the following:
@Override
public void onResume() {
super.onResume();
Log.v(“test”, this.getLocalClassName() + “.onResume()”);
mMainView.resume();
CoronaEnvironment.addRuntimeListener(new CoronaRuntimeListener() {
@Override
public void onLoaded(CoronaRuntime coronaRuntime) {
}
@Override
public void onStarted(CoronaRuntime coronaRuntime) {
Hashtable<Object, Object> ht = new Hashtable<Object, Object>();
ht.put(“name”, “testEvent”);
ht.put(“message”, “Hello Corona! Sent from onResume().”);
//
// // This way results in NullPointerException at CoronaLua.java:271
mMainView.sendEvent(ht);
}
@Override
public void onSuspended(CoronaRuntime coronaRuntime) {
}
@Override
public void onResumed(CoronaRuntime coronaRuntime) {
}
@Override
public void onExiting(CoronaRuntime coronaRuntime) {
}
});
// Create event for sending to Corona/Lua
}
You can read more about the listener here: http://docs.coronalabs.com/daily/native/android/html/com/ansca/corona/CoronaRuntimeListener.html
This way you’re waiting until Corona is fully set up before trying to send any events.
Thanks Danny.
Waiting for the CoronaRuntimeListener.onStarted() to fire before calling sendEvent() does seem to fix the NullPointerException. May I suggest that the CoronaCards sendEvent() code check for the null and return a result code to the caller, rather than crash?
However, even after waiting for Corona to be fully setup before calling sendEvent, I’m still running into problems:
10-20 22:02:10.446: A/libc(4749): Fatal signal 11 (SIGSEGV) at 0x000000f5 (code=1), thread 4879 (AsyncTask #4)
I am able to fix this partially with the runOnUiThread() trick, and it cuts down the crashes a lot, but it still happens sometimes.
10-20 21:42:27.256: A/libc(507): Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 507 (example.fishies)
or
10-20 21:52:56.646: A/libc(3586): bionic/libstdc++/src/pure_virtual.cpp:6: void __cxa_pure_virtual(): assertion “!“Pure virtual function called. Are you calling virtual methods from a destructor?”” failed
10-20 21:52:56.646: A/libc(3586): Fatal signal 6 (SIGABRT) at 0x00000e02 (code=-6), thread 3586 (om.example.test)
10-20 21:40:07.046: E/AndroidRuntime(32232): Caused by: java.util.ConcurrentModificationException
10-20 21:40:07.046: E/AndroidRuntime(32232): at java.util.AbstractList$SimpleListIterator.next(AbstractList.java:62)
10-20 21:40:07.046: E/AndroidRuntime(32232): at network.NetworkRequest.abortOpenConnections(NetworkRequest.java:49)
10-20 21:40:07.046: E/AndroidRuntime(32232): at network.LuaLoader.onExiting(LuaLoader.java:149)
10-20 21:40:07.046: E/AndroidRuntime(32232): at com.ansca.corona.CoronaEnvironment$RuntimeEventHandler.onExiting(CoronaEnvironment.java:470)
10-20 21:40:07.046: E/AndroidRuntime(32232): at com.ansca.corona.CoronaRuntime.onExiting(CoronaRuntime.java:422)
10-20 21:40:07.046: E/AndroidRuntime(32232): at com.ansca.corona.CoronaRuntime.dispose(CoronaRuntime.java:76)
10-20 21:40:07.046: E/AndroidRuntime(32232): at com.ansca.corona.CoronaView.destroy(CoronaView.java:169)
Bottom line is that while the CoronaRuntimeListener.onStarted() tip and the runOnUiThread() trick are helping, my apps are still very unstable.
Here are some sample stack traces of crashes that I’m still getting on sendEvent().
10-21 00:53:43.548: E/AndroidRuntime(9415): FATAL EXCEPTION: main
10-21 00:53:43.548: E/AndroidRuntime(9415): Process: com.easy_launcher, PID: 9415
10-21 00:53:43.548: E/AndroidRuntime(9415): com.naef.jnlua.LuaRuntimeException: invalid replacement value (a table)
10-21 00:53:43.548: E/AndroidRuntime(9415): at com.naef.jnlua.LuaState.lua_pcall(Native Method)
10-21 00:53:43.548: E/AndroidRuntime(9415): at com.naef.jnlua.LuaState.call(Unknown Source)
10-21 00:53:43.548: E/AndroidRuntime(9415): at com.ansca.corona.CoronaLua.dispatchRuntimeEvent(CoronaLua.java:293)
10-21 00:53:43.548: E/AndroidRuntime(9415): at com.ansca.corona.CoronaView.sendEvent(CoronaView.java:191)
10-21 00:57:36.598: E/AndroidRuntime(10526): FATAL EXCEPTION: main
10-21 00:57:36.598: E/AndroidRuntime(10526): Process: com.easy_launcher, PID: 10526
10-21 00:57:36.598: E/AndroidRuntime(10526): java.lang.IllegalArgumentException: illegal type
10-21 00:57:36.598: E/AndroidRuntime(10526): at com.naef.jnlua.LuaState.lua_settable(Native Method)
10-21 00:57:36.598: E/AndroidRuntime(10526): at com.naef.jnlua.LuaState.setTable(Unknown Source)
10-21 00:57:36.598: E/AndroidRuntime(10526): at com.ansca.corona.CoronaLua.pushHashtable(CoronaLua.java:279)
10-21 00:57:36.598: E/AndroidRuntime(10526): at com.ansca.corona.CoronaView.sendEvent(CoronaView.java:190)
10-21 00:59:54.638: E/AndroidRuntime(11665): FATAL EXCEPTION: main
10-21 00:59:54.638: E/AndroidRuntime(11665): Process: com.easy_launcher, PID: 11665
10-21 00:59:54.638: E/AndroidRuntime(11665): java.lang.IllegalArgumentException: illegal index
10-21 00:59:54.638: E/AndroidRuntime(11665): at com.naef.jnlua.LuaState.lua_settable(Native Method)
10-21 00:59:54.638: E/AndroidRuntime(11665): at com.naef.jnlua.LuaState.setTable(Unknown Source)
10-21 00:59:54.638: E/AndroidRuntime(11665): at com.ansca.corona.CoronaLua.pushHashtable(CoronaLua.java:279)
10-21 00:59:54.638: E/AndroidRuntime(11665): at com.ansca.corona.CoronaView.sendEvent(CoronaView.java:190)
Hi,
I’ve purchased the license this week and since then I’ve been experiencing the same problems.
While the Corona code runs perfectly on the simulator, it crashes when I try to send events from Java that are triggered every 1 sec.
The exceptions and stack trace seem very random, and I think this might be a problem with Corona’s latest build.
Please help us!
Hey folks,
I believe the issues mentioned here should be fixed in the next build. One thing to note is that we had to make 1 breaking change. Previously when you called coronaView.sendEvent(hashTable) it would immediately return the value returned from Lua. Now if you want to get the value returned from Lua you’ll have to pass in a listener so it would look like coronaView.sendEvent(hashTable, listener). If you previously didn’t care about the return value then nothing will change. Please let me know if you have any other issues, thanks.
Thanks Danny. When the new build is ready, I will try it out and let you know how it goes.
Just tried the new build. So far so good. Haven’t tested the event sending extensively, but so far no crashes.