Android OTG U盘无法显示在系统文件管理的修改
文件：frameworks\base\services\core\java\com\android\server\StorageManagerService.java
函数：private void onVolumeCreatedLocked(VolumeInfo vol)
如下修改：
private void onVolumeCreatedLocked(VolumeInfo vol) { ...... if (vol.type == VolumeInfo.TYPE_EMULATED) { ...... } else if (vol.type == VolumeInfo.TYPE_PUBLIC) { ...... // Adoptable public disks are visible to apps, since they meet // public API requirement of being in a stable location. /**********************************************************************/ //if (vol.disk.isAdoptable()) { //注释掉这个判断 vol.mountFlags |= VolumeInfo.MOUNT_FLAG_VISIBLE; //} /**********************************************************************/ ...... }
上面的修改，在U盘mount的时候会起作用：
文件：system/vold/model/PublicVolume.cpp
函数：status_t PublicVolume::doMount()
status_t PublicVolume::doMount() { // TODO: expand to support mounting other filesystems readMetadata(); ...... setInternalPath(mRawPath); if (getMountFlags() & MountFlags::kVisible) { //这里有判断，使用storage挂载路径 setPath(StringPrintf("/storage/%s", stableName.c_str())); } else { setPath(mRawPath); } ...... if (!(getMountFlags() & MountFlags::kVisible)) { //这里也有判断，会继续执行后面的创建用户空间文件系统 // Not visible to apps, so no need to spin up FUSE return OK; } ...... return OK; }
