startSpeakerDeviceTest method Null safety
- String filePath
Start speaker test
This method plays back the specified audio data to test whether the speaker can function properly. If sound can be heard, the speaker is normal.
Note: this API supports only the macOS and Windows platforms
Parameters:
filePath Audio file path
Returned value:
0: success; negative number: failure
Implementation
Future<int?> startSpeakerDeviceTest(String filePath
) {
return _channel.invokeMethod('startSpeakerDeviceTest', {
"filePath": filePath
});
}