android 16 room 7 centos 3 android-jetpack 2 android屏幕适配 2 屏幕适配 2 class 1 gradle 1 handler 1 http 1 java 1 java内存模型 1 java锁 1 jvm 1 kotlin 1 node 1 requestcode 1 room-entity 1 rxbinding 1 rxjava 1