Android 11 存储机制变更 Context // sdcard/Android/data/com.android.demo/cache/ public abstract File getExternalCacheDir(); Previous Android R UsbDebug Next Android SystemServer CATALOG FEATURED TAGS Android debug dumpsys shell linux Permission 心理学 ubuntu JNI android IMS systemui selinux eSIM androidstudio performance pms wms view iptables netd property c++ kernel mqtt usb company statusbar hardware webrtc recovery web camera rk3288 A133 driver rockchip rk3399 chip rk3588 a133 qt t113 FRIENDS Gityuan 简书·LXG Android Developer AOSP