执行flutterdoctor遇到以下错误: 〔!〕AndroidtoolchaindevelopforAndroiddevices(AndroidSDK28。0。1)Androidlicensestatusunknown。 followthesesteps:openSDKManagergotoSDKtoolsDeletetheAndroidSDKToolsfromSDKManagerfirstdeselecttheHideObsoletePackagesandthenselectAndroidSDKTools(Obsolete),installit。runflutterdoctorandroidlicensesandselectyfortheprompts。 runflutterdoctorandeverythingwillbefine!!!!