Direct read db file for Android database operation

There are two common ways to operate on a database:

1, build the library in the code, build the table; 2, directly set up the relevant libraries, tables, copy the DB file to the assets directory;   now look at the second method:  private String Getdatabasepath (Context Context) {    String PackageName = Context.getpackagename (); //log.i ("Packname", PackageName);  //String db_path = String.Format ("/data/data/%1$s/databases/", //PackageName);  string db_path = Comm Ondata.basedir + file.separator + db_name;   if ((New File (Db_path)). Exists () = = False) {   try {&nbsp ;  //If the SQLite database file does not exist, check to see if the databases directory exists     file F = new file (db_path);   //If the database directory is not stored In, new this directory     if (!f.exists ()) {     f.mkdir ();   }   //Get Assets directory we're ready for SQLite database as input stream     InputStream is = Context.getassets (). Open (db_name);   //output stream     OutputS Tream OS = new FileOutputStream (db_path);   //File write     byte[] buffer = new byte[1024];    I NT length;    while (length = Is.read (buffer)) > 0) {     os.write (buffer, 0, length);   }   //close file stream   &NB Sp Os.flush ();    os.close ();    is.close ();   } catch (Exception e) {    E.printsta Cktrace ();   } }   return db_path; }