問題一：
Could not automatically detect an ADB binary. Some emulator functionality will not work until a custom path to ADB is added.
解決：安卓模擬器左邊欄點(diǎn)擊1處，在3處找到adb，adb在/Library/Android/sdk/platform-tools/下。
問題二：
Android SDK file not found: adb.
解決：
1、安裝 Android SDK Tools (Obsolete)
2、重新下載 sdk/platform-tools 參考：
2.1 cd /Users/Name/Library/Android/sdk 文件夾，刪掉platform-tools文件夾；
2.2 Then start AS again and go to File->Invalidate caches/restart.【這步不知道是不是必須的】
2.3 打開sdk manager --> SDK Tools --> 選中 Android SDK platform-tools 點(diǎn)擊OK開始下載。
問題三：
Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
解決：
flutter doctor --android-licenses
