Android / GoogleDrive图片上传

Question

首先我是法国学生，请原谅我的英语..

我已经启动了一个拍照的应用程序，现在我希望它能在GoogleDrive上保存这些照片。 我跟着谷歌教程，我现在有一个我无法解释的错误，我不知道如何解决它：

400 Bad Request {“code”：400，“errors”：[{“domain”：“global”，“location”：“fields”，“locationType”：“parameter”，“message”：“无效的字段选择项” ，“reason”：“invalidParameter”}]，“message”：“无效的字段选择项”}

此链接可能有助于https://developers.google.com/drive/v3/web/handle-errors，即使我真的不明白它是如何帮助的。

当然，我做了google问的所有事情： https ： //developers.google.com/drive/quickstart/android

这是存在错误的活动。

我希望你能理解我的问题，如果你这样做并帮助解决它，我只需要说谢谢（即使你刚读完）..

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential;
import com.google.api.client.googleapis.extensions.android.gms.auth.GooglePlayServicesAvailabilityIOException;
import com.google.api.client.googleapis.extensions.android.gms.auth.UserRecoverableAuthIOException;

import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.ExponentialBackOff;

import com.google.api.services.drive.DriveScopes;

import com.google.api.services.drive.model.*;

import android.accounts.AccountManager;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.text.method.ScrollingMovementMethod;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import com.google.api.client.json.gson.GsonFactory;

public class DriveActivity extends Activity {
GoogleAccountCredential mCredential;
private TextView mOutputText;
ProgressDialog mProgress;

static final int REQUEST_ACCOUNT_PICKER = 1000;
static final int REQUEST_AUTHORIZATION = 1001;
static final int REQUEST_GOOGLE_PLAY_SERVICES = 1002;
private static final String PREF_ACCOUNT_NAME = "accountName";
private static final String[] SCOPES = { DriveScopes.DRIVE_METADATA_READONLY };

/**
 * Create the main activity.
 * @param savedInstanceState previously saved instance data.
 */
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    LinearLayout activityLayout = new LinearLayout(this);
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.MATCH_PARENT);
    activityLayout.setLayoutParams(lp);
    activityLayout.setOrientation(LinearLayout.VERTICAL);
    activityLayout.setPadding(16, 16, 16, 16);

    ViewGroup.LayoutParams tlp = new ViewGroup.LayoutParams(
            ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.WRAP_CONTENT);

    mOutputText = new TextView(this);
    mOutputText.setLayoutParams(tlp);
    mOutputText.setPadding(16, 16, 16, 16);
    mOutputText.setVerticalScrollBarEnabled(true);
    mOutputText.setMovementMethod(new ScrollingMovementMethod());
    activityLayout.addView(mOutputText);

    mProgress = new ProgressDialog(this);
    mProgress.setMessage("Connexion Google Drive ...");

    setContentView(activityLayout);

    // Initialize credentials and service object.
    SharedPreferences settings = getPreferences(Context.MODE_PRIVATE);
    mCredential = GoogleAccountCredential.usingOAuth2(
            getApplicationContext(), Arrays.asList(SCOPES))
            .setBackOff(new ExponentialBackOff())
            .setSelectedAccountName(settings.getString(PREF_ACCOUNT_NAME, null));
}


/**
 * Called whenever this activity is pushed to the foreground, such as after
 * a call to onCreate().
 */
@Override
protected void onResume() {
    super.onResume();
    if (isGooglePlayServicesAvailable()) {
        refreshResults();
    } else {
        mOutputText.setText("Google Play Services requièrent: " +
                "après l'installation, fermer et relancer l'app.");
    }
}

/**
 * Called when an activity launched here (specifically, AccountPicker
 * and authorization) exits, giving you the requestCode you started it with,
 * the resultCode it returned, and any additional data from it.
 * @param requestCode code indicating which activity result is incoming.
 * @param resultCode code indicating the result of the incoming
 *     activity result.
 * @param data Intent (containing result data) returned by incoming
 *     activity result.
 */
@Override
protected void onActivityResult(
        int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch(requestCode) {
        case REQUEST_GOOGLE_PLAY_SERVICES:
            if (resultCode != RESULT_OK) {
                isGooglePlayServicesAvailable();
            }
            break;
        case REQUEST_ACCOUNT_PICKER:
            if (resultCode == RESULT_OK && data != null &&
                    data.getExtras() != null) {
                String accountName =
                        data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
                if (accountName != null) {
                    mCredential.setSelectedAccountName(accountName);
                    SharedPreferences settings =
                            getPreferences(Context.MODE_PRIVATE);
                    SharedPreferences.Editor editor = settings.edit();
                    editor.putString(PREF_ACCOUNT_NAME, accountName);
                    editor.apply();
                }
            } else if (resultCode == RESULT_CANCELED) {
                mOutputText.setText("Compte non spécifié.");
            }
            break;
        case REQUEST_AUTHORIZATION:
            if (resultCode != RESULT_OK) {
                chooseAccount();
            }
            break;
    }

    super.onActivityResult(requestCode, resultCode, data);
}

/**
 * Attempt to get a set of data from the Drive API to display. If the
 * email address isn't known yet, then call chooseAccount() method so the
 * user can pick an account.
 */
private void refreshResults() {
    if (mCredential.getSelectedAccountName() == null) {
        chooseAccount();
    } else {
        if (isDeviceOnline()) {
            new MakeRequestTask(mCredential).execute();
        } else {
            mOutputText.setText("Pas de connexion internet.");
        }
    }
}

/**
 * Starts an activity in Google Play Services so the user can pick an
 * account.
 */
private void chooseAccount() {
    startActivityForResult(
            mCredential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
}

/**
 * Checks whether the device currently has a network connection.
 * @return true if the device has a network connection, false otherwise.
 */
private boolean isDeviceOnline() {
    ConnectivityManager connMgr =
            (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
    return (networkInfo != null && networkInfo.isConnected());
}

/**
 * Check that Google Play services APK is installed and up to date. Will
 * launch an error dialog for the user to update Google Play Services if
 * possible.
 * @return true if Google Play Services is available and up to
 *     date on this device; false otherwise.
 */
private boolean isGooglePlayServicesAvailable() {
    final int connectionStatusCode =
            GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (GooglePlayServicesUtil.isUserRecoverableError(connectionStatusCode)) {
        showGooglePlayServicesAvailabilityErrorDialog(connectionStatusCode);
        return false;
    } else if (connectionStatusCode != ConnectionResult.SUCCESS ) {
        return false;
    }
    return true;
}

/**
 * Display an error dialog showing that Google Play Services is missing
 * or out of date.
 * @param connectionStatusCode code describing the presence (or lack of)
 *     Google Play Services on this device.
 */
void showGooglePlayServicesAvailabilityErrorDialog(
        final int connectionStatusCode) {
    Dialog dialog = GooglePlayServicesUtil.getErrorDialog(
            connectionStatusCode,
            DriveActivity.this,
            REQUEST_GOOGLE_PLAY_SERVICES);
    dialog.show();
}

/**
 * An asynchronous task that handles the Drive API call.
 * Placing the API calls in their own task ensures the UI stays responsive.
 */
private class MakeRequestTask extends AsyncTask<Void, Void, List<String>> {
    private com.google.api.services.drive.Drive mService = null;
    private Exception mLastError = null;

    public MakeRequestTask(GoogleAccountCredential credential) {
        HttpTransport transport = AndroidHttp.newCompatibleTransport();
        JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
        mService = new com.google.api.services.drive.Drive.Builder(
                transport, jsonFactory, credential)
                .setApplicationName("AthexisPics")
                .build();
    }

    /**
     * Background task to call Drive API.
     * @param params no parameters needed for this task.
     */
    @Override
    protected List<String> doInBackground(Void... params) {
        try {
            return getDataFromApi();
        } catch (Exception e) {
            mLastError = e;
            cancel(true);
            return null;
        }
    }

    /**
     * Fetch a list of up to 10 file names and IDs.
     * @return List of Strings describing files, or an empty list if no files
     *         found.
     * @throws IOException
     */
    private List<String> getDataFromApi() throws IOException {
        // Get a list of up to 10 files.
        List<String> fileInfo = new ArrayList<String>();
        FileList result = mService.files().list()
                .setPageSize(10)
                .setFields("nextPageToken, items(id, name)")
                .execute();
        List<File> files = result.getFiles();
        if (files != null) {
            for (File file : files) {
                fileInfo.add(String.format("%s (%s)\n",
                        file.getName(), file.getId()));
            }
        }
        return fileInfo;
    }


    @Override
    protected void onPreExecute() {
        mOutputText.setText("");
        mProgress.show();
    }

    @Override
    protected void onPostExecute(List<String> output) {
        mProgress.hide();
        if (output == null || output.size() == 0) {
            mOutputText.setText("Pas de résultats trouvés.");
        } else {
            output.add(0, "Données récupérées:");
            mOutputText.setText(TextUtils.join("\n", output));
        }
    }

    @Override
    protected void onCancelled() {
        mProgress.hide();
        if (mLastError != null) {
            if (mLastError instanceof GooglePlayServicesAvailabilityIOException) {
                showGooglePlayServicesAvailabilityErrorDialog(
                        ((GooglePlayServicesAvailabilityIOException) mLastError)
                                .getConnectionStatusCode());
            } else if (mLastError instanceof UserRecoverableAuthIOException) {
                startActivityForResult(
                        ((UserRecoverableAuthIOException) mLastError).getIntent(),
                        DriveActivity.REQUEST_AUTHORIZATION);
            } else {
                mOutputText.setText("L'erreur suivante vient de se produire:\n"
                        + mLastError.getMessage());
            }
        } else {
            mOutputText.setText("Requête annulée.");
        }
    }
}
}

Answer 1

伙计，我明白了！

在Android中运行Rest Api for Drive的示例代码时，向我显示了相同的错误消息。

错误消息“无效字段选择项”表示API无法识别字段item '。 实际上，必须在API代码中更改字段名称，而不对示例代码（Bad Google）进行相应更改。

所以在你的代码中，而不是这一行：

setFields("nextPageToken, items(id, name)")

使用更改的字段名称尝试此行：

setFields("nextPageToken, files(id, name)")

除了项目<--->文件，标题（在在线文档中给出）<--->名称。

再次，糟糕的谷歌。

Answer 2

根据官方Google文档 ， 400'validParameter'表示尚未提供必填字段或参数，提供的值无效或提供的字段组合无效。 仔细检查要设置的参数和值。

这是一个示例演示应用程序，它拍摄照片并将其保存在云端硬盘中： https ： //github.com/googledrive/android-quickstart