Flutter/Dart 获取当前的 stacktrace - 技术小黑屋

3 years ago

source link: https://droidyue.com/blog/2021/12/09/how-to-get-current-stacktrace-in-dart-flutter/
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Flutter/Dart 获取当前的 Stacktrace

Dec 9th, 2021

出现异常时获取 stacktrace

void _printException() {
 try {
   1 ~/ 0;
 } catch (e, s) {
   print('_printException $e; $s');
 }
}

对应的 stacktrace 日志信息

_printException IntegerDivisionByZeroException; #0      int.~/ (dart:core-patch/integers.dart:30:7)
#1      _printException (file:///Users/androidyue/Documents/self_host/dart_current_stacktrace/bin/dart_current_stacktrace.dart:10:7)
#2      main (file:///Users/androidyue/Documents/self_host/dart_current_stacktrace/bin/dart_current_stacktrace.dart:3:3)
#3      _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:281:32)
#4      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)

非异常出现时获取 stacktrace

如果只是想获取当前 stacktrace，比如用来确定某些方法的执行调用场景。

可以通过人为制造异常的方式来进行输出打印。

void _printCurrentStacktrace() {
 try {
   throw 'printCurrentStacktrace';
 } catch (e, s) {
   print('_printCurrentStacktrace;$s');
 }
}

不人为制造异常得到 stacktrace（使用StackTrace.current）

void _printCurrentStacktraceV2() {
 print('_printCurrentStacktraceV2 ${StackTrace.current}');
}

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Posted by androidyue Dec 9th, 2021

Dart, Flutter, Stacktrace, Thread

« 使用 Flutter SDK 中的 Dart SDK

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