Android app crashed if call FlutterMain#startInitialization late?

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李少杰

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Jun 9, 2018, 4:59:06 AM6/9/18
to Flutter Dev
I was integrating flutter to an existing app which has a custom application class already. Everything works fine if I call FlutterMain#startInitialization in Application#onCreate.
But I want to init flutter just before the FlutterActivity start, so I move it into MyFlutterActivity#onCreate. Then it crashed every time. Does the execution time of startInitialization matter for flutter?

Crash stack trace:
06-09 16:01:29.154 24103 24459 F libc    : Fatal signal 11 (SIGSEGV) in tid 24459 (1.ui)
06-09 16:01:29.258 16803 16803 F DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
06-09 16:01:29.258 16803 16803 F DEBUG   : Build fingerprint: 'Android/sdk_google_phone_x86/generic_x86:6.0/MASTER/4729342:userdebug/test-keys'
06-09 16:01:29.258 16803 16803 F DEBUG   : Revision: '0'
06-09 16:01:29.258 16803 16803 F DEBUG   : ABI: 'x86'
06-09 16:01:29.258 16803 16803 F DEBUG   : pid: 24103, tid: 24459, name: 1.ui  >>> li.joker.tutorial <<<
06-09 16:01:29.258 16803 16803 F DEBUG   : signal 11 (SIGSEGV), code 0 (SI_USER), fault addr 0x0
06-09 16:01:29.266 16803 16803 F DEBUG   :     eax 00000000  ebx 9490caac  ecx 00000000  edx 00000000
06-09 16:01:29.267 16803 16803 F DEBUG   :     esi 917abdf8  edi 917abdfc
06-09 16:01:29.267 16803 16803 F DEBUG   :     xcs 00000073  xds 0000007b  xes 0000007b  xfs 00000007  xss 0000007b
06-09 16:01:29.267 16803 16803 F DEBUG   :     eip 93c16a19  ebp 958f2618  esp 958f25f0  flags 00210286
06-09 16:01:29.269 16803 16803 F DEBUG   : 
06-09 16:01:29.269 16803 16803 F DEBUG   : backtrace:
06-09 16:01:29.270 16803 16803 F DEBUG   :     #00 pc 004bea19  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #01 pc 004bc5df  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #02 pc 004c32e8  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #03 pc 004c42d6  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #04 pc 000aff8f  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #05 pc 000add90  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #06 pc 000ae0a0  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #07 pc 000ad9f7  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #08 pc 0067ac2e  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #09 pc 0067aa93  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so
06-09 16:01:29.270 16803 16803 F DEBUG   :     #10 pc 00000776  <unknown>
06-09 16:01:29.270 16803 16803 F DEBUG   :     #11 pc 0003202e  <unknown>
06-09 16:01:29.270 16803 16803 F DEBUG   :     #12 pc 00031eab  <unknown>
06-09 16:01:29.270 16803 16803 F DEBUG   :     #13 pc 00028d4a  <unknown>
06-09 16:01:29.270 16803 16803 F DEBUG   :     #14 pc 00028259  <unknown>
06-09 16:01:29.270 16803 16803 F DEBUG   :     #15 pc 00027d7f  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #16 pc 0002731d  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #17 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #18 pc 00020878  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #19 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #20 pc 000229a4  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #21 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #22 pc 00020878  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #23 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #24 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #25 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #26 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #27 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #28 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #29 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #30 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #31 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #32 pc 000154d1  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #33 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #34 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #35 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #36 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #37 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #38 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #39 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #40 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #41 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #42 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #43 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #44 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #45 pc 000204f7  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #46 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #47 pc 000154d1  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #48 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #49 pc 000145e6  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #50 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #51 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #52 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #53 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #54 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #55 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #56 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #57 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #58 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #59 pc 00014106  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #60 pc 00013302  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #61 pc 000113a4  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #62 pc 00010823  <unknown>
06-09 16:01:29.271 16803 16803 F DEBUG   :     #63 pc 0000fa7f  <unknown>
06-09 16:01:29.649 16803 16803 F DEBUG   : 
06-09 16:01:29.649 16803 16803 F DEBUG   : Tombstone written to: /data/tombstones/tombstone_01

李少杰

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Jun 10, 2018, 10:24:06 AM6/10/18
to Flutter Dev
My flutter version:

Flutter 0.4.4 • channel beta • https://github.com/flutter/flutter.git
Framework • revision f9bb4289e9 (4 weeks ago) • 2018-05-11 21:44:54 -0700
Engine • revision 06afdfe54e
Tools • Dart 2.0.0-dev.54.0.flutter-46ab040e58

Mikkel Ravn

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Jun 10, 2018, 12:30:04 PM6/10/18
to sslik...@gmail.com, Flutter Dev
You need to call FlutterMain.startInitialization before you call FlutterMain.ensureInitializationComplete. The latter is called from FlutterActivity.onCreate. So this should work:
public class MainActivity extends FlutterActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    FlutterMain.startInitialization(this);
    super.onCreate(savedInstanceState);
    GeneratedPluginRegistrant.registerWith(this);
  }
}
I have not been able to reproduce the error you get, so we probably need more details about your code to help out. Please consider creating a GitHub issue for this at https://github.com/flutter/flutter/issues/new/choose

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Software Engineer

Eric Seidel

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Jun 11, 2018, 3:26:14 PM6/11/18
to Mikkel Ravn, sslik...@gmail.com, Flutter Dev
You can also use https://github.com/flutter/engine/wiki/Symbolicating-production-crash-stacks to find out exactly where its crashing.

李少杰

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Jun 11, 2018, 10:48:16 PM6/11/18
to Eric Seidel, Mikkel Ravn, Flutter Dev
Symbolicated stack trace:
Build fingerprint: 'Android/sdk_google_phone_x86/generic_x86:6.0/MASTER/4729342:userdebug/test-keys'
pid: 24103, tid: 24459, name: 1.ui  >>> li.joker.tutorial <<<
signal 11 (SIGSEGV), code 0 (SI_USER), fault addr 0x0
Stack frame #00 pc 004bea19  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine minikin::WordBreaker::setText(unsigned short const*, unsigned int) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/third_party/txt/src/minikin/WordBreaker.cpp:55
Stack frame #01 pc 004bc5df  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine minikin::LineBreaker::setText() at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/third_party/txt/src/minikin/LineBreaker.cpp:74
Stack frame #02 pc 004c32e8  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine txt::Paragraph::ComputeLineBreaks() at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/third_party/txt/src/txt/paragraph.cc:273
Stack frame #03 pc 004c42d6  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine txt::Paragraph::Layout(double, bool) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/third_party/txt/src/txt/paragraph.cc:428
Stack frame #04 pc 000aff8f  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine blink::ParagraphImplTxt::layout(double) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/lib/ui/text/paragraph_impl_txt.cc:54
Stack frame #05 pc 000add90  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine blink::Paragraph::layout(double) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/lib/ui/text/paragraph.cc:80
Stack frame #06 pc 000ae0a0  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine tonic::DartDispatcher<tonic::IndicesHolder<0u>, void (blink::Paragraph::*)(double)>::Dispatch(void (blink::Paragraph::*)(double)) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../topaz/lib/tonic/dart_args.h:150
Stack frame #07 pc 000ad9f7  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine blink::Paragraph_layout(_Dart_NativeArguments*) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../flutter/lib/ui/text/paragraph.cc:36
Stack frame #08 pc 0067ac2e  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine dart::NativeEntry::AutoScopeNativeCallWrapperNoStackCheck(_Dart_NativeArguments*, void (*)(_Dart_NativeArguments*)) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../third_party/dart/runtime/vm/native_entry.cc:198
Stack frame #09 pc 0067aa93  /data/app/li.joker.tutorial-2/lib/x86/libflutter.so: Routine dart::NativeEntry::AutoScopeNativeCallWrapper(_Dart_NativeArguments*, void (*)(_Dart_NativeArguments*)) at /b/build/slave/Linux_Engine/build/src/out/android_debug_x86/../../third_party/dart/runtime/vm/native_entry.cc:168
Stack frame #10 pc 00000776  <unknown>
Stack frame #11 pc 0003202e  <unknown>
Stack frame #12 pc 00031eab  <unknown>
Stack frame #13 pc 00028d4a  <unknown>
. . . . .
Hope it’s helpful.

Mikkel Ravn

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Jun 12, 2018, 2:37:31 AM6/12/18
to 李少杰, Eric Seidel, Flutter Dev

李少杰

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Jun 12, 2018, 4:43:04 AM6/12/18
to Mikkel Ravn, Eric Seidel, Flutter Dev
It seems very same as https://github.com/flutter/flutter/issues/16748. I will add some comment below the issue.

Eric Seidel

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Jun 12, 2018, 11:37:07 AM6/12/18
to 李少杰, jsim...@google.com, Mikkel Ravn, Flutter Dev
+Jason Simmons I believe these all have to do with whether the ICU data file has been expanded correctly onto disk.

However, probably our text system should crash in a more obvious way than this. :)

Jason Simmons

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Jun 12, 2018, 1:01:30 PM6/12/18
to Eric Seidel, sslik...@gmail.com, Mikkel Ravn, flutt...@googlegroups.com
The best solution to this will be eliminating the resource extractor
and serving the ICU data directly out of the APK. Hopefully we can
accomplish this soon.

Jason
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