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File and folder creation using new Drive API
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mendhak committed Jun 22, 2013
1 parent 1865cfd commit 777557e
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236 changes: 225 additions & 11 deletions GPSLogger/src/com/mendhak/gpslogger/senders/gdocs/GDocsHelper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,20 +17,22 @@

package com.mendhak.gpslogger.senders.gdocs;

import android.app.Dialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.preference.PreferenceManager;
import com.google.android.gms.auth.GoogleAuthUtil;
import com.google.android.gms.auth.GooglePlayServicesAvailabilityException;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.mendhak.gpslogger.common.IActionListener;
import com.mendhak.gpslogger.common.Utilities;
import com.mendhak.gpslogger.senders.IFileSender;
import org.json.JSONObject;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.List;


Expand All @@ -47,8 +49,6 @@ public class GDocsHelper implements IActionListener, IFileSender
or
(old Android)
./adb -e shell 'sqlite3 /data/system/accounts.db "delete from grants;"'
*/

public GDocsHelper(Context applicationContext, IActionListener callback)
Expand All @@ -60,10 +60,10 @@ public GDocsHelper(Context applicationContext, IActionListener callback)

public static String GetOauth2Scope()
{
return "oauth2:https://www.googleapis.com/auth/drive.file";
return "oauth2:https://www.googleapis.com/auth/drive.file";
}

/**
/**
* Gets the stored authToken, which may be expired
*/
public static String GetAuthToken(Context applicationContext)
Expand Down Expand Up @@ -114,7 +114,6 @@ public static void SaveAuthToken(Context applicationContext, String authToken)

/**
* Removes the authToken and account name from storage
*
*/
public static void ClearAuthToken(Context applicationContext)
{
Expand Down Expand Up @@ -259,20 +258,235 @@ public void run()

String token = GoogleAuthUtil.getTokenWithNotification(ctx, GetAccountName(ctx), GetOauth2Scope(), new Bundle());
Utilities.LogDebug(token);

String gpsLoggerFolderId = GetFileIdFromFileName(token, "GPSLogger For Android");

if(Utilities.IsNullOrEmpty(gpsLoggerFolderId))
{
//Couldn't find folder, must create it
gpsLoggerFolderId = CreateEmptyFile(token, "GPSLogger For Android", "application/vnd.google-apps.folder", "root");
}

//Now search for the file
String gpxFileId = GetFileIdFromFileName(token,fileName);

if(Utilities.IsNullOrEmpty(gpxFileId))
{
//Create empty file first
gpxFileId = CreateEmptyFile(token, fileName, "application/xml", gpsLoggerFolderId);
}

if(!Utilities.IsNullOrEmpty(gpxFileId))
{
//Set file's contents
UpdateFileContents(token, gpxFileId, Utilities.GetByteArrayFromInputStream(inputStream));
}

callback.OnComplete();

}
catch (Exception e)
{
Utilities.LogError("GDocsUploadHandler.RefreshToken", e);
Utilities.LogError("GDocsUploadHandler", e);
callback.OnFailure();
}


}
}

private String UpdateFileContents(String authToken, String gpxFileId, byte[] fileContents)
{
HttpURLConnection conn = null;
String fileId = null;

String fileUpdateUrl = "https://www.googleapis.com/upload/drive/v2/files/"+ gpxFileId + "?uploadType=media";

try
{


if (Integer.parseInt(Build.VERSION.SDK) < Build.VERSION_CODES.FROYO)
{
//Due to a pre-froyo bug
//http://android-developers.blogspot.com/2011/09/androids-http-clients.html
System.setProperty("http.keepAlive", "false");
}

URL url = new URL(fileUpdateUrl);

conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("PUT");
conn.setRequestProperty("User-Agent", "GPSLogger for Android");
conn.setRequestProperty("Authorization", "Bearer " + authToken);
conn.setRequestProperty("Content-Type", "application/xml");
conn.setRequestProperty("Content-Length", String.valueOf(fileContents.length));

conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);

DataOutputStream wr = new DataOutputStream(
conn.getOutputStream());
wr.write(fileContents);
wr.flush();
wr.close();

String fileMetadata = Utilities.GetStringFromInputStream(conn.getInputStream());

JSONObject fileMetadataJson = new JSONObject(fileMetadata);
fileId = fileMetadataJson.getString("id");
Utilities.LogDebug("File updated : " + fileId);

}
catch (Exception e)
{
System.out.println(e.getMessage());
}
finally
{
if (conn != null)
{
conn.disconnect();
}

}

return fileId;

}

private String CreateEmptyFile(String authToken, String fileName, String mimeType, String parentFolderId)
{

String fileId = null;
HttpURLConnection conn = null;

String createFileUrl = "https://www.googleapis.com/drive/v2/files";

@Override
String createFilePayload = " {\n" +
" \"title\": \"" + fileName + "\",\n" +
" \"mimeType\": \"" + mimeType + "\",\n" +
" \"parents\": [\n" +
" {\n" +
" \"id\": \"" + parentFolderId + "\"\n" +
" }\n" +
" ]\n" +
" }";

try
{

if (Integer.parseInt(Build.VERSION.SDK) < Build.VERSION_CODES.FROYO)
{
//Due to a pre-froyo bug
//http://android-developers.blogspot.com/2011/09/androids-http-clients.html
System.setProperty("http.keepAlive", "false");
}

URL url = new URL(createFileUrl);

conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("User-Agent", "GPSLogger for Android");
conn.setRequestProperty("Authorization", "Bearer " + authToken);
conn.setRequestProperty("Content-Type", "application/json");

conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);

DataOutputStream wr = new DataOutputStream(
conn.getOutputStream());
wr.writeBytes(createFilePayload);
wr.flush();
wr.close();

fileId = null;

String fileMetadata = Utilities.GetStringFromInputStream(conn.getInputStream());

JSONObject fileMetadataJson = new JSONObject(fileMetadata);
fileId = fileMetadataJson.getString("id");
Utilities.LogDebug("File created with ID " + fileId);

}
catch (Exception e)
{

System.out.println(e.getMessage());
System.out.println(e.getMessage());
}
finally
{
if (conn != null)
{
conn.disconnect();
}

}

return fileId;
}


private String GetFileIdFromFileName(String authToken, String fileName)
{

HttpURLConnection conn = null;
String fileId = "";

try
{

fileName = URLEncoder.encode(fileName, "UTF-8");
String searchUrl = "https://www.googleapis.com/drive/v2/files?q=title%20%3D%20%27" + fileName + "%27%20and%20trashed%20%3D%20false";


if (Integer.parseInt(Build.VERSION.SDK) < Build.VERSION_CODES.FROYO)
{
//Due to a pre-froyo bug
//http://android-developers.blogspot.com/2011/09/androids-http-clients.html
System.setProperty("http.keepAlive", "false");
}

URL url = new URL(searchUrl);

conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("User-Agent", "GPSLogger for Android");
conn.setRequestProperty("Authorization", "OAuth " + authToken);

String fileMetadata = Utilities.GetStringFromInputStream(conn.getInputStream());


JSONObject fileMetadataJson = new JSONObject(fileMetadata);
if(fileMetadataJson.getJSONArray("items") != null && fileMetadataJson.getJSONArray("items").length() > 0)
{
fileId = fileMetadataJson.getJSONArray("items").getJSONObject(0).get("id").toString();
Utilities.LogDebug("Found file with ID " + fileId);
}

}
catch (Exception e)
{
Utilities.LogError("SearchForGPSLoggerFile", e);
}
finally
{
if (conn != null)
{
conn.disconnect();
}
}

return fileId;
}




@Override
public boolean accept(File dir, String filename)
{
return false; //To change body of implemented methods use File | Settings | File Templates.
Expand Down
4 changes: 2 additions & 2 deletions GPSLogger/src/com/mendhak/gpslogger/senders/gdocs/GDocsSettingsActivity.java
View file
Original file line number Diff line number Diff line change
Expand Up @@ -306,7 +306,7 @@ private void UploadTestFileToGoogleDocs()
gpxFolder.mkdirs();
}

File testFile = new File(gpxFolder.getPath(), "gpslogger_test.txt");
File testFile = new File(gpxFolder.getPath(), "gpslogger_test.xml");

try
{
Expand All @@ -318,7 +318,7 @@ private void UploadTestFileToGoogleDocs()
BufferedOutputStream initialOutput = new BufferedOutputStream(initialWriter);

StringBuilder initialString = new StringBuilder();
initialString.append("This is a test file");
initialString.append("<x>This is a test file</x>");
initialOutput.write(initialString.toString().getBytes());
initialOutput.flush();
initialOutput.close();
Expand Down

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