Uploading image from Android to GCS

Question

I am trying to upload an image from Android directly to Google cloud storage. But the API does not seem to work. They have some Java samples which are tied to the App engine

Answer 1

I have tried all the above answers and none of them worked for me straight out of the box. Here is what i have done to make it working(only by editing from the above comments):

package  Your page name;
import android.app.Activity;
import android.content.res.AssetManager;
import android.os.Environment;
import android.util.Log;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.InputStreamContent;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.storage.Storage;
import com.google.api.services.storage.StorageScopes;
import com.google.api.services.storage.model.Bucket;
import com.google.api.services.storage.model.StorageObject;

import java.io.File;
import java.io.*;
import java.io.InputStream;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

 public class CloudStorage {

static Activity activity=null;
//http://stackoverflow.com/questions/18002293/uploading-image-from-android-to-gcs

static Storage storage=null;
public static void uploadFile(Activity activity2,String bucketName, String filePath)
{
    activity=activity2;
    try {
        Storage storage = getStorage();
        StorageObject object = new StorageObject();
        object.setBucket(bucketName);
        File sdcard = Environment.getExternalStorageDirectory();
        File file = new File(filePath);

        InputStream stream = new FileInputStream(file);

        try {
            Log.d("Alkamli","Test");
            String contentType = URLConnection.guessContentTypeFromStream(stream);
            InputStreamContent content = new InputStreamContent(contentType, stream);

            Storage.Objects.Insert insert = storage.objects().insert(bucketName, null, content);
            insert.setName(file.getName());
            insert.execute();

        } finally {
            stream.close();
        }
    }catch(Exception e)
    {
        class Local {}; Log.d("Alkamli","Sub: "+Local.class.getEnclosingMethod().getName()+" Error code: "+e.getMessage());

        e.printStackTrace();
    }
}

private static Storage getStorage() {

    try {

        if (storage == null)
        {
            HttpTransport httpTransport = new NetHttpTransport();
            JsonFactory jsonFactory = new JacksonFactory();
            List scopes = new ArrayList();
            scopes.add(StorageScopes.DEVSTORAGE_FULL_CONTROL);

            Credential credential = new GoogleCredential.Builder()
                    .setTransport(httpTransport)
                    .setJsonFactory(jsonFactory)
                    .setServiceAccountId("Service-Email-Address") //Email
                    .setServiceAccountPrivateKeyFromP12File(getTempPkc12File())
                    .setServiceAccountScopes(scopes).build();

            storage = new Storage.Builder(httpTransport, jsonFactory,
                    credential)
                    .build();
        }

        return storage;
    }catch(Exception e)
    {
        class Local {}; Log.d("Alkamli","Sub: "+Local.class.getEnclosingMethod().getName()+" Error code: "+e.getMessage());

    }
    Log.d("Alkamli","Storage object is null ");
    return null;
}

private static File getTempPkc12File() {
    try {
        // xxx.p12 export from google API console
        InputStream pkc12Stream = activity.getResources().getAssets().open("Service-key.p12");
        File tempPkc12File = File.createTempFile("temp_pkc12_file", "p12");
        OutputStream tempFileStream = new FileOutputStream(tempPkc12File);
        int read = 0;
        byte[] bytes = new byte[1024];
        while ((read = pkc12Stream.read(bytes)) != -1) {
            tempFileStream.write(bytes, 0, read);
        }
        return tempPkc12File;
    }catch(Exception e)
    {
        class Local {}; Log.d("Alkamli","Sub: "+Local.class.getEnclosingMethod().getName()+" Error code: "+e.getMessage());

    }
    Log.d("Alkamli"," getTempPkc12File is null");
    return null;
}
}

I only edited few lines to make it work for me and for the dependencies in gradle You will need only these three. (Keep in mind that if you use all google depenacnes that may damage your whole project. in my case some of android's functions wouldn't work anymore )

    compile 'com.google.api-client:google-api-client:1.20.0'
    compile 'com.google.oauth-client:google-oauth-client-jetty:1.20.0'
    compile 'com.google.apis:google-api-services-storage:v1-rev17-1.19.0' 

The full project for people needing it : https://github.com/Fahad-alkamli/Chat-app