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Android Studio報錯:all packages are not available for download package id sources android-28

有些項目調試時突然找不到源碼,出現的全是

throw new runtimeexception("stub!")

點選download,報錯:all packages are not available for download package id sources android-28

Android Studio報錯:all packages are not available for download package id sources android-28

找了好幾個地方,stackover上的大多是說網絡(不通的)問題,要關閉instant run的問題,關閉proxy的問題(setting->system setting->http proxy->no proxy)。。。都試了一下,沒有效果,而且, sdk28根本就沒有source code可以下,不知道google在做什麼這麼弄,如下圖

Android Studio報錯:all packages are not available for download package id sources android-28

最後自己搗鼓了半天,發現這樣可以解決問題,

project structure -> app -> buildsdkversion->選一個你的build版本,再rebuild一下,ok

如下圖

Android Studio報錯:all packages are not available for download package id sources android-28