Android 7.0 得到存储设备信息

MountPoint

我们通过MountPoint来描述android设备信息

    private static class MountPoint {
        String mDescription;
        String mPath;
boolean mIsExternal;
boolean mIsMounted;
long mMaxFileSize;
long mFreeSpace;
long mTotalSpace;
    }

实现mMountPathList

    private final CopyOnWriteArrayList <MountPoint> mMountPathList = new CopyOnWriteArrayList<MountPoint>();
    public void init(Context context) {
        mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
        final String defaultPath = getDefaultPath();
        LogUtils.d(TAG, "init,defaultPath = " + defaultPath);
        if (!TextUtils.isEmpty(defaultPath)) {
            mRootPath = ROOT_PATH;
        }
        mMountPathList.clear();
        // check media availability to init mMountPathList
        StorageVolume[] storageVolumeList = mStorageManager.getVolumeList();
        if (storageVolumeList != null) {
            for (StorageVolume volume : storageVolumeList) {
                MountPoint mountPoint = new MountPoint();
                mountPoint.mDescription = volume.getDescription(context);
                mountPoint.mPath = volume.getPath();
                mountPoint.mIsMounted = isMounted(volume.getPath());
                mountPoint.mIsExternal = volume.isRemovable();
                mountPoint.mMaxFileSize = volume.getMaxFileSize();
                LogUtils.d(TAG, "init,description :" + mountPoint.mDescription + ",path : "
                        + mountPoint.mPath + ",isMounted : " + mountPoint.mIsMounted
                        + ",isExternal : " + mountPoint.mIsExternal + ", mMaxFileSize: " + mountPoint.mMaxFileSize);
                mMountPathList.add(mountPoint);
            }
        }
        IconManager.getInstance().init(context, defaultPath + SEPARATOR);
    }

判断是否是外置sdcard

    /**
 * This method checks weather certain path is external mount path.
 *
 * @param path path which needs to be checked
 * @return true for external mount path, and false for not external mount path
 */
public boolean isExternalMountPath(String path) {
//LogUtils.d(TAG, "isExternalMountPath ,path =" + path);
if (path == null) {
return false;
        }
for (MountPoint mountPoint : mMountPathList) {
if (mountPoint.mIsExternal && mountPoint.mPath.equals(path)) {
return true;
            }
        }
return false;
    }

判断内置存储空间

    public boolean isInternalMountPath(String path) {
//LogUtils.d(TAG, "isInternalMountPath ,path =" + path);
if (path == null) {
return false;
        }
for (MountPoint mountPoint : mMountPathList) {
if (!mountPoint.mIsExternal && mountPoint.mPath.equals(path)) {
return true;
            }
        }
return false;
    }