1.MediaProvider存储手机中的媒体文件，用 SQLite 数据库存储图片、视频、音频等多媒体文件的信息，供视频播放器、音乐播放器、图库使用。以 root 权限进入 adb shell，使用 sqlite3 打开位于手机上 /data/data/com.android.providers.media/databases 上的一个数据库。以 external 开头的数据库存储的是 SD 卡媒体信息，一张卡对应一个，所以如果手机使用过多张卡会有多个数据库。以 internal 开头的数据库存储手机内部存储器的媒体信息。因为一般用户无法访问手机内部存储器，而且这两个数据库结构是大体上是相同的，所以只需要关注 external 数据库即可。

2.配置读写权限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<uses-permission android:name="android.permission.WRITE_MEDIA_STORAGE" />

代码声明：

private ContentProviderClient mProvider; private static final String[] FILES_PRESCAN_PROJECTION = new String[]{

            MediaStore.Files.FileColumns._ID, // 0            MediaStore.Files.FileColumns.DATA, // 1

    };    private ContentValues toValues(int i) {    ContentValues map = new ContentValues();

            map.put(MediaStore.MediaColumns.DATA,"/zcx"+i);            map.put(MediaStore.MediaColumns.TITLE,"zcxzcx");

            map.put(MediaStore.MediaColumns.SIZE,5);            map.put(MediaStore.MediaColumns.MIME_TYPE,"tiantian");            return map;    }

main():

mProvider = getContentResolver()        .acquireContentProviderClient(MediaStore.AUTHORITY);Uri mFilesUri = MediaStore.Files.getContentUri("external");Cursor c = null; String where = MediaStore.Files.FileColumns._ID + ">?";//+ " AND " + MediaStore.Files.FileColumns.DATA + "=?";Uri limitUri = mFilesUri.buildUpon().appendQueryParameter("limit", "1000").build();String[] selectionArgs = null;selectionArgs = new String[] { "" };long lastId=160000;//, "/zcx3"ContentValues values = new ContentValues();values = toValues(0);ContentValues values2 = new ContentValues();values2 = toValues(1);List<ContentValues> list = new ArrayList<ContentValues>();

int cou = 100;while ((cou--)!=0){    list.add(toValues(cou));}try {   ContentValues[] valuesArray = new ContentValues[list.size()];    valuesArray = list.toArray(valuesArray);    //mProvider.insert(mFilesUri,values);    //mProvider.insert(mFilesUri,values2);    st = System.currentTimeMillis();    mProvider.bulkInsert(mFilesUri,valuesArray);    end = System.currentTimeMillis();} catch (RemoteException e) {    Log.d("zcxdatabase2","RemoteException = ");    e.printStackTrace();}while (true) {   selectionArgs[0] = "" + lastId;    if (c != null) {        c.close();        c = null;    }    try {        c = mProvider.query(limitUri, FILES_PRESCAN_PROJECTION,                where, selectionArgs, MediaStore.Files.FileColumns._ID, null);    } catch (RemoteException e) {        e.printStackTrace();    }    if (c == null) {        break;    }

    int num = c.getCount();

    if (num == 0) {        break;    }    while (c.moveToNext()) {        long rowId = c.getLong(0);        String path = c.getString(1);        Log.d("zcxdatabase","rowId = "+rowId+" path = "+path);        lastId = rowId;

        // Only consider entries with absolute path names.        // This allows storing URIs in the database without the        // media scanner removing them.

    }     //break;}

参考文档：https://www.cnblogs.com/linlf03/p/3477077.html