Android获取手机内存与SD卡的根目录

本文介绍: 直接贴出代码，有需要的可以直接变成工具类使用。优先读取 sd卡假设没有 sd卡再去手机内存中获取。记得动态配置读写权限!

直接贴出代码，有需要的可以直接变成工具类使用。优先读取 sd卡假设没有 sd卡再去手机内存中获取。记得动态配置读写权限!

    /**
     * 优先在SD卡，其次是内部存储
     */
    public static String getRWPath(Context context) {

        String rwPath = null;
        String storagePath = getStoragePath(context, true);
        if (null != storagePath) {
            rwPath = storagePath;
        } else {
            String sdPath = getSDPath();
            rwPath = sdPath;
        }
        return rwPath;
    }

     /**
     * @description 获取SD卡路径，不用在设置中这是默认存储位置
     */
    public static String getStoragePath(Context mContext, boolean is_removale) {

        StorageManager mStorageManager = (StorageManager) mContext.getSystemService(Context.STORAGE_SERVICE);
        Class<?> storageVolumeClazz = null;
        try {
            storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");
            Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");
            Method getPath = storageVolumeClazz.getMethod("getPath");
            Method isRemovable = storageVolumeClazz.getMethod("isRemovable");
            Object result = getVolumeList.invoke(mStorageManager);
            final int length = Array.getLength(result);
            for (int i = 0; i < length; i++) {
                Object storageVolumeElement = Array.get(result, i);
                String path = (String) getPath.invoke(storageVolumeElement);
                boolean removable = (Boolean) isRemovable.invoke(storageVolumeElement);
                if (is_removale == removable) {
                    return path;
                }
            }
        } catch (ClassNotFoundException | InvocationTargetException | NoSuchMethodException | IllegalAccessException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 获取SD卡路径
     *
     * @return
     */
    public static String getSDPath() {
        String sdPath = null;
        // 判断sd卡是否存在
        boolean sdCardExit = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
        if (sdCardExit) {
            // 获取根目录
            sdPath = Environment.getExternalStorageDirectory().toString();
        }
        return sdPath;

    }