原创 gen already exists but is not a source folder. Convert to a source folder or rename it

    遇到這個問題的解決方法: 右鍵點擊工程，選擇 "Properties" 選擇左邊的 "Java Build Path" 打開 "Source" 標籤面板 點擊 "Add Folder..." 勾選 "gen" 文件夾，點擊OK

2018-08-26 22:17:45