Access dropbox folder on Android

Dropbox has an API for this link

Easy to integrate, I think there will be no problems.

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Let's go then as requested:

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Basic APP Instruction

• CREATE AN APP WITH DROPBOX
• Create an APP on DROPBOX link
• Choose "Dropbox API app" then select "Yes - My application only needs access to files it creates."
• From a name to the APP and in a row you will be redirected to the APP config screen,
• set the return url where you will save the authentication token

Ex:

http://localhost/dropboxAPI/end_auth.php 

• On this same page you will see your APP_KEY and APP_SECRET - which you will use to authenticate the APP.

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• INSTALL COMPOSER

  link

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• Inside the folder of your APP in this case I used the folder "dropboxAPI /" create a file called "composer.json" put the following code in it

  {
    "require": {
      "dropbox/dropbox-sdk": "1.1.*"
    }
  }
  

  • Enter the folder of your APP by the CMD or terminal already with the file "composer.json" created.

EX:

/var/html/dropboxAPI/

e digite o comando: 

composer install

• Wait for the package to finish installing.

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• CREATING THE FILES

• For this example we are creating the following files

  • index.php
  • end_auth.php
  • config.php

• File below 'config.php'

  <?php
  session_start();
  function pre($arg){
      echo "<pre>";
         print_r($arg);
      echo "</pre>";
  }
  require  "vendor/autoload.php";
  define('DROPBOX_KEY'    , 'sua key');
  define('DROPBOX_SECRET' , 'seu secret');
  define('APP_NAME'       , 'ShowRoomEvent');
  # inicia classe
  $app = new Dropbox\AppInfo(DROPBOX_KEY,DROPBOX_SECRET);
  # metodo token verificacao
  $tokenCsfr = new Dropbox\ArrayEntryStore($_SESSION,'dropbox-auth-csrf-token');
  # pede autenticacao
  $auth  = new Dropbox\WebAuth($app,APP_NAME,'http://localhost/dropboxAPI/end_auth.php',$tokenCsfr);
  
  ?>
  

• Below is the end_auth.php (or the file you set in the APP URL)

  <?php
  # inicio arquivo end_auth.php
  # RECEBE O TOKEN DO DROPBOX
  require 'config.php';
  list($getToken) = $auth->finish($_GET);
  if( isset($getToken) && !empty($getToken)){
      # ARMAZENAR NA SESSAO OU BD
      $_SESSION['user_token'] = $getToken;
      header("Location: index.php");
  } else{
     echo "Erro ao gerar autenticacao";
  }
  #fim arquivo end_auth.php
  ?>
  

• Index.php file with basic examples

  <?php
  require 'config.php';
  # se voce colocar na url ?logout=true
  # vai limpara a sessao e pedir autenticacao novamemente
  # lembrando que voce pode armazenar essa info no BD, XML etc...
  if( isset($_GET['logout']) ){
     unset($_SESSION['user_token']);
  }
  # verifica se tem token
  if( ! isset($_SESSION['user_token']) && empty($_SESSION['user_token'])) {
     # se nao tem token pede permissao para o usuario
     $url = $auth->start();
     header("Location: " . $url);
  }
  # o token ja foi armazenado na sessao conforme arquivo 'end_auth.php'
  $user = new Dropbox\Client($_SESSION['user_token'],APP_NAME,'UTF-8');
  $usuario = $user->getAccountInfo();
  pre($usuario);
  echo "<br/><br/>";
  
  /* EXEMPLO UPLOAD
   * Para fazer upload para o dropbox voce ja deve
   * ter o arquivo localmente ou fazer o upload e depois
   * enviar par ao drop
   *
  */
  $arquivo = fopen("cascata.png",'rb');
  $tamanho = filesize("cascata.png");
  # onde o nome cascata_no_drop.png deve ser o nome que
  # vai ser usado no dropbox lembre de colocar / antes do nome
  $user->uploadFile("/cascata_no_drop.png",Dropbox\WriteMode::add(),$arquivo,$tamanho);
  
  /*
   * EXEMPLO DOWNLOAD
   * informar o path do arquivo no drop
   * informar novo nome para o arquivo "fopen mode 'wb'"
   */
  
   $user->getFile("/cascata_no_drop.png", fopen("cascata_vinda_drop.png","wb"));
  
  /*
   * LISTA O QUE TEM NO DROPBOX
   */
  $lista = $user->getMetadataWithChildren('/');
  pre($lista);
  ?>