Android 7.0開發(fā)獲取存儲設備信息的方法

更新時間：2017年11月16日 09:59:49 作者：王大錘扛刀

這篇文章主要介紹了Android 7.0開發(fā)獲取存儲設備信息的方法,結合實例形式分析了Android7.0針對存儲設備信息的獲取、判斷操作方法與相關注意事項,需要的朋友可以參考下

本文實例講述了 Android 7.0開發(fā)獲取存儲設備信息的方法。分享給大家供大家參考，具體如下：

Android 7.0開發(fā)相較之前有不少改進，具體可參考前面的文章Android7.0版本影響開發(fā)的改進分析，這里簡單總結一下Android 7.0針對存儲設備的簡單操作方法。

MountPoint

我們通過MountPoint來描述android設備信息

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

實現(xiàn)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);
}

判斷是否是外置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;
}

判斷內置存儲空間

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;
}

更多關于Android相關內容感興趣的讀者可查看本站專題：《Android文件操作技巧匯總》、《Android視圖View技巧總結》、《Android編程之activity操作技巧總結》、《Android布局layout技巧總結》、《Android開發(fā)入門與進階教程》、《Android資源操作技巧匯總》及《Android控件用法總結》

希望本文所述對大家Android程序設計有所幫助。

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