'_Smi'不是'bool'类型的子类型-Flutter MethodChannel [英] '_Smi' is not a subtype of type 'bool' - Flutter MethodChannel

问题描述

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

Getting this strange error. Seems like the MethodChannel is converting to an int instead of a 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.它似乎在模拟器中的调试模式下工作(此错误是在实际设备上发布的apk).

No idea what could be causing this. It seems to be working in debug mode in the emulator (this error is release apk on a real device).

推荐答案

运行flutter clean似乎已解决此问题.我想确保在每次发行版本之前都要做！

Running flutter clean seems to have fixed this. Make sure to do it before every release build, I guess!

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