Android Open Source - TextFileXpanderAndroid Dropbox Auth Activity

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License

The source code is released under:
Apache License
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Java Source Code

//
//  DropboxAuthActivity.java
//  TextFileXpander
//// w  w  w.ja va2s . c  o m
//  Created by wanswings on 2014/08/25.
//  Copyright (c) 2014 wanswings. All rights reserved.
//
package com.wanswings.TextFileXpander;

import com.dropbox.client2.DropboxAPI;
import com.dropbox.client2.android.AndroidAuthSession;
import com.dropbox.client2.session.AccessTokenPair;
import com.dropbox.client2.session.AppKeyPair;
import com.dropbox.client2.session.TokenPair;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

public class DropboxAuthActivity extends Activity {

  protected static final String EXTRA_FROM_DROPBOX = "fromDropbox";
  protected static final String EXTRA_RESULT_DROPBOX = "resultDropbox";

  private String packageName;
  private String classNameForLog;
  private PrivateSharedPrefs prefs;
  private AuthCommon common;

  @Override
  protected void onDestroy() {
    Log.i(packageName, classNameForLog + "onDestroy start");
    super.onDestroy();
  }

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    packageName = this.getPackageName();
    classNameForLog = this.getClass().getName() + "...";
    prefs = new PrivateSharedPrefs(this, PrivateSharedPrefs.SAVE_PREFS_NAME_STORAGE);
    common = (AuthCommon)getApplication();
    Log.i(packageName, classNameForLog + "onCreate start");

    setContentView(R.layout.activity_dropbox);
  }

  @SuppressWarnings("deprecation")
  @Override
  protected void onResume() {
    super.onResume();
    Log.i(packageName, classNameForLog + "onResume start");

    if (isFinishing()) {
      return;
    }
    ConnectivityManager cm = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo info = cm.getActiveNetworkInfo();
    if (info == null || !info.isConnected()) {
      // offline
      Toast.makeText(DropboxAuthActivity.this, R.string.error_internet_not_available, Toast.LENGTH_LONG).show();
      common.mDropboxAPI = null;
      Intent intent = new Intent(this, MainActivity.class);
      intent.putExtra(EXTRA_FROM_DROPBOX, true);
      intent.putExtra(EXTRA_RESULT_DROPBOX, false);
      intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
      intent.setAction(Intent.ACTION_VIEW);
      startActivity(intent);
      finish();
    }
    else if (common.mDropboxAPI == null) {
      AppKeyPair appKeyPair = new AppKeyPair(getString(R.string.dropbox_app_key),
                          getString(R.string.dropbox_app_secret));
      String[] keys = prefs.getKeys(PrivateSharedPrefs.SAVE_KEYS_DROPBOX);
      if (keys == null) {
        AndroidAuthSession session  = new AndroidAuthSession(appKeyPair);
        common.mDropboxAPI = new DropboxAPI<AndroidAuthSession>(session);
      }
      else {
        AndroidAuthSession session = new AndroidAuthSession(appKeyPair, new AccessTokenPair(keys[0], keys[1]));
        common.mDropboxAPI = new DropboxAPI<AndroidAuthSession>(session);
      }
      if (!common.mDropboxAPI.getSession().isLinked()) {
        common.mDropboxAPI.getSession().startAuthentication(DropboxAuthActivity.this);
      }
      else {
        Intent intent = new Intent(DropboxAuthActivity.this, MainActivity.class);
        intent.putExtra(EXTRA_FROM_DROPBOX, true);
        intent.putExtra(EXTRA_RESULT_DROPBOX, true);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        intent.setAction(Intent.ACTION_VIEW);
        startActivity(intent);
        finish();
      }
    }
    else {
      boolean result = true;
      AndroidAuthSession session = common.mDropboxAPI.getSession();
      if (session.authenticationSuccessful()) {
        Log.i(packageName, classNameForLog + "authenticationSuccessful");
        try {
          // Required to complete authentication, sets the access token on the session
          session.finishAuthentication();
          TokenPair tokens = session.getAccessTokenPair();
  
          String[] keys = prefs.getKeys(PrivateSharedPrefs.SAVE_KEYS_DROPBOX);
          if (keys == null || !keys[0].equals(tokens.key) || !keys[1].equals(tokens.secret)) {
            prefs.storeKeys(PrivateSharedPrefs.SAVE_KEYS_DROPBOX, new String[]{tokens.key, tokens.secret});
          }
        }
        catch (IllegalStateException e) {
          Log.e(getPackageName(), classNameForLog + e.toString());
          result = false;
        }
      }
      else {
        result = false;
      }

      if (!result) {
        common.mDropboxAPI = null;
      }
      Intent intent = new Intent(DropboxAuthActivity.this, MainActivity.class);
      intent.putExtra(EXTRA_FROM_DROPBOX, true);
      intent.putExtra(EXTRA_RESULT_DROPBOX, result);
      intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
      intent.setAction(Intent.ACTION_VIEW);
      startActivity(intent);
      finish();
    }
  }
}
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