Question

我正在开发一款Android应用，它包含一项功能，即用户使用他们的Google帐户登录后，我们将访问他们的Google工作表以获取数据库。我试图搜索Google Spreadsheet Api但不清楚如何使用它。

当然，我可以从下面的代码中获取公开表格中的数据，但问题是获取私人表格。

private List<String> getDataFromApi() throws IOException {
            String spreadsheetId = "1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms";
            String range = "Class Data!A2:E";
            List<String> results = new ArrayList<String>();
            ValueRange response = this.mService.spreadsheets().values()
                    .get(spreadsheetId, range)
                    .execute();
            List<List<Object>> values = response.getValues();
            if (values != null) {
                results.add("Name, Major");
                for (List row : values) {
                    results.add(row.get(0) + ", " + row.get(4));
                }
            }


            return results;
        }

我也在某个地方搜索并找到了下面的代码，但它抛出了NoSuchMethodError异常，我很困惑什么是＆＃34;用户名＆＃34;和＃34;密码＆＃34;在line spreadsheet.setUserCredentials。

中

SpreadsheetService spreadsheet= new SpreadsheetService("v1");
    spreadsheet.setProtocolVersion(SpreadsheetService.Versions.V3);

    try {
        spreadsheet.setUserCredentials("username", "password");
        URL metafeedUrl = new URL("https://spreadsheets.google.com/feeds/spreadsheets/private/full");
        SpreadsheetFeed feed = spreadsheet.getFeed(metafeedUrl, SpreadsheetFeed.class);

        List<SpreadsheetEntry> spreadsheets = feed.getEntries();
        for (SpreadsheetEntry service : spreadsheets) {             
            System.out.println(service.getTitle().getPlainText());
       }
    } catch (AuthenticationException e) {           
        e.printStackTrace();
    }

所以任何人都知道如何做到这一点或有示例代码请分享我。提前谢谢！

Answer 1

最后，我找到了我的问题的解决方案，现在我在这里发帖，以帮助其他任何面临同样问题的人克服它。

首先，转到https://console.developers.google.com并创建与您的项目相关联的新OAuth客户端ID凭据。

现在在你的android项目中，在依赖项中添加这些库：

dependencies {    
    compile 'com.google.android.gms:play-services-auth:9.2.1'    
    compile files('libs/gdata-client-1.0.jar')    
    compile files('libs/gdata-client-meta-1.0.jar')    
    compile files('libs/gdata-core-1.0.jar')    
    compile files('libs/gdata-core-1.0-sources.jar')    
    compile files('libs/gdata-spreadsheet-3.0.jar')    
    compile files('libs/gdata-spreadsheet-meta-3.0.jar')    
    compile files('libs/guava-10.0.1.jar')    
    compile files('libs/jsr305-1.3.9.jar')    
}

在AndroidManifest.xml中添加以下权限：
uses-permission android：name =＆＃34; android.permission.INTERNET＆＃34;
uses-permission android：name =＆＃34; android.permission.GET_ACCOUNTS＆＃34;
同时在<application></application>标记中添加：

<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />

CODE如下：

public class DownloadDatabaseActivity extends AppCompatActivity {

    private static final String TAG = "my_log";
    public static ProgressDialog mProgressDialog;
    String spreadsheetName;
    String worksheetName;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_download_database);

        Button btnDownload = (Button) findViewById(R.id.btnDownload);
        btnDownload.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                EditText etSpreadsheetName = (EditText) findViewById(R.id.etSpreadsheetName);
                EditText etWorksheetName = (EditText) findViewById(R.id.etWorksheetName);
                spreadsheetName = etSpreadsheetName.getText().toString();
                worksheetName = etWorksheetName.getText().toString();

                Intent intent = AccountPicker.newChooseAccountIntent(null, null,
                        new String[]{"com.google"}, false, null, null, null, null);
                startActivityForResult(intent, 1);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == 1 && resultCode == RESULT_OK) {
            Log.d(TAG, "--> enter first if");

            final String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
            new DownloadTask(this).execute(accountName, spreadsheetName, worksheetName);

        } else if (requestCode == 2 && resultCode == RESULT_OK) {
            Log.d(TAG, "--> enter second if");
        }
    }

    ////////////////////////////////////////////////////////////////////////////

    private class DownloadTask extends AsyncTask<String, Void, String> {

        private Context context;

        // constructor
        public DownloadTask(Context context) {
            this.context = context;
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            showProgressDialog(context);
        }

        @Override
        protected String doInBackground(String... params) {
            String mEmail = params[0]; // your google account name
            String mType = "com.google";
            Account account = new Account(mEmail, mType);
            String scopes = "oauth2:https://spreadsheets.google.com/feeds "
                    + "https://www.googleapis.com/auth/plus.login "
                    + "https://www.googleapis.com/auth/drive";
            String token = null;
            try {
                token = GoogleAuthUtil.getToken(getApplicationContext(), account, scopes);
            } catch (IOException e) {
                Log.e(TAG, e.getMessage());
            } catch (UserRecoverableAuthException e) {
                Intent recoveryIntent = e.getIntent();
                startActivityForResult(recoveryIntent, 2);
            } catch (GoogleAuthException e) {
                Log.e(TAG, e.getMessage());
            }

            try {
                SpreadsheetService service = new SpreadsheetService("MySpreadsheetIntegration-v1");
                service.setAuthSubToken(token);
                URL SPREADSHEET_FEED_URL = new URL(
                        "https://spreadsheets.google.com/feeds/spreadsheets/private/full");
                SpreadsheetFeed feed = service.getFeed(SPREADSHEET_FEED_URL, SpreadsheetFeed.class);
                List<SpreadsheetEntry> spreadsheets = feed.getEntries();

                Log.d(TAG, "spreadsheets.size() = " + spreadsheets.size());

                for (SpreadsheetEntry spreadsheet : spreadsheets) { // outer for loop
                    if (spreadsheet.getTitle().getPlainText().equalsIgnoreCase(params[1])) { // your spreadsheet name
                        List<WorksheetEntry> worksheets = spreadsheet.getWorksheets();

                        for (WorksheetEntry worksheet : worksheets) { // inner for loop
                            String title = worksheet.getTitle().getPlainText();
                            if (title.equalsIgnoreCase(params[2])) { // your worksheet name
                                Log.d(TAG, "Worksheet name: " + title);
                                URL listFeedUrl = worksheet.getListFeedUrl();
                                ListFeed listFeed = service.getFeed(listFeedUrl, ListFeed.class);
                                Log.d(TAG, "Number of row = " + listFeed.getTotalResults());

                                // scan through each row in worksheet
                                for (ListEntry row : listFeed.getEntries()) {
                                    String rowTitle = row.getTitle().getPlainText();
                                    ArrayList<String> currentRow = new ArrayList<>();

                                    // get elements in current row stored in ArrayList
                                    for (String element : row.getCustomElements().getTags()) {
                                        if (!row.getCustomElements().getValue(element).equals(rowTitle))
                                            currentRow.add(row.getCustomElements().getValue(element));
                                    }
                                    // Log.d(TAG, "currentRow.size() = "+currentRow.size());

                                    // do your work here with the data received

                                }`
                                break; // break inner
                            }
                        }
                        break; // break outer
                    }
                }

            } catch (Exception e) {
                e.printStackTrace();
            }

            return token;
        }

        @Override
        protected void onPostExecute(String token) {
            Log.d(TAG, "Token Value: " + token);
            hideProgressDialog();
        }
    }
}

Answer 2

您在setUserCredentials中设置的用户名和密码是用于验证对服务器的请求的凭据。关于如何获取私人表格的问题，我认为documentation可以帮助您。有关更多示例和信息，请查看此example code。

如何在用户使用Google帐户登录后从私人Google工作表中获取数据？

2 个答案: