android - '_Smi' 不是类型 'bool' 的子类型 - Flutter MethodChannel

Question

得到这个奇怪的错误。似乎 MethodChannel 正在转换为 int 而不是 bool？

06-07 00:16:26.589  3678  4993 E flutter : [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
06-07 00:16:26.589  3678  4993 E flutter : type '_Smi' is not a subtype of type 'bool' where
06-07 00:16:26.589  3678  4993 E flutter :   _Smi is from dart:core
06-07 00:16:26.589  3678  4993 E flutter :   bool is from dart:core
06-07 00:16:26.589  3678  4993 E flutter :
06-07 00:16:26.589  3678  4993 E flutter : #0  ...

相关代码:

//the line in question
bool permission = await platform.invokeMethod("askStoragePermission"); 

//the following is the native kotlin that is called.
//The device previously had received permission so it should be going to 
//the 'else' section (and no permission request dialogue appeared)
"askStoragePermission" -> {
  if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this, arrayOf(android.Manifest.permission.READ_EXTERNAL_STORAGE), 35)
    currentResult = result
  } else {
    result.success(true)
  }
}

不知道是什么原因造成的。它似乎在模拟器中以 Debug模式工作(此错误是在真实设备上发布 apk)。

Answer 1

运行 flutter clean 似乎解决了这个问题。确保在每次发布构建之前都这样做，我猜!