cannot access android.support.v4.app.BaseFragmentActivityJB的解决
//implementation ‘com.android.support:appcompat-v7:26.1.0‘ 改成
implementation ‘com.android.support:appcompat-v7:25.3.1‘文章来自：https://www.cnblogs.com/dubo-/p/9138451.html
//implementation ‘com.android.support:appcompat-v7:26.1.0‘ 改成
implementation ‘com.android.support:appcompat-v7:25.3.1‘