地球上有谁知道如何使Google Drive REST v3与应用一起使用？

时间：2019-07-05 09:42:55

标签： android rest google-drive-api google-drive-android-api

我花了数百个小时尝试创建一个Android应用程序，该应用程序将使我无法打开和编辑存储在Google云端硬盘帐户中的文件，但没有成功。我相信一旦有了DriveService对象，我就知道如何处理这些文件，但是我根本无法理解凭据，令牌和授权。所有文档和示例要么已过时，过于混乱，要么对我不起作用。

我最近的尝试是使用https://github.com/google/google-api-java-client-samples/tree/master/tasks-android-sample处的Google API示例，但是该应用在选择所需帐户后立即崩溃。有人可以告诉我我的代码有什么问题吗，或者有一种更简单的方法来访问我的帐户的DriveService对象？我的MainActivity如下（其他类应与GitHub上的示例相同）。

package com.example.googledrivetestapp;

import android.app.Activity;
import android.os.Environment;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.api.client.auth.oauth2.Credential;
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.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.tasks.TasksScopes;

import android.accounts.AccountManager;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

import android.os.AsyncTask;


public final class MainActivity extends Activity {

    private static final Level LOGGING_LEVEL = Level.OFF;

    private static final String PREF_ACCOUNT_NAME = "accountName";

    static final String TAG = "GoogleDriveTestApp";

    static final int REQUEST_GOOGLE_PLAY_SERVICES = 0;

    static final int REQUEST_AUTHORIZATION = 1;

    static final int REQUEST_ACCOUNT_PICKER = 2;

    final HttpTransport httpTransport = AndroidHttp.newCompatibleTransport();

    final JsonFactory jsonFactory = GsonFactory.getDefaultInstance();

    GoogleAccountCredential credential;

    List<String> tasksList;

    ArrayAdapter<String> adapter;

    com.google.api.services.tasks.Tasks service;

    int numAsyncTasks;

    private ListView listView;


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

        Button btnChooseAccount = (Button) findViewById(R.id.btnChooseAccount);
        btnChooseAccount.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                chooseAccount();
            }
        });

        // enable logging
        Logger.getLogger("com.google.api.client").setLevel(LOGGING_LEVEL);
        // Google Accounts
        credential =
                GoogleAccountCredential.usingOAuth2(this, Collections.singleton(TasksScopes.TASKS));
        SharedPreferences settings = getPreferences(Context.MODE_PRIVATE);
        credential.setSelectedAccountName(settings.getString(PREF_ACCOUNT_NAME, null));
        // Tasks client
        service =
                new com.google.api.services.tasks.Tasks.Builder(httpTransport, jsonFactory, credential)
                        .setApplicationName("GoogleDriveTestApp").build();

    }

    void showGooglePlayServicesAvailabilityErrorDialog(final int connectionStatusCode) {
        runOnUiThread(new Runnable() {
            public void run() {
                Dialog dialog =
                        GooglePlayServicesUtil.getErrorDialog(connectionStatusCode, MainActivity.this,
                                REQUEST_GOOGLE_PLAY_SERVICES);
                dialog.show();
            }
        });
    }

    void refreshView() {
        adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, tasksList);
        listView.setAdapter(adapter);
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (checkGooglePlayServicesAvailable()) {
            haveGooglePlayServices();
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case REQUEST_GOOGLE_PLAY_SERVICES:
                if (resultCode == Activity.RESULT_OK) {
                    haveGooglePlayServices();
                } else {
                    checkGooglePlayServicesAvailable();
                }
                break;
            case REQUEST_AUTHORIZATION:
                if (resultCode == Activity.RESULT_OK) {
                    AsyncLoadTasks.run(this);
                } else {
                    chooseAccount();
                }
                break;
            case REQUEST_ACCOUNT_PICKER:
                if (resultCode == Activity.RESULT_OK && data != null && data.getExtras() != null) {
                    String accountName = data.getExtras().getString(AccountManager.KEY_ACCOUNT_NAME);
                    if (accountName != null) {
                        credential.setSelectedAccountName(accountName);
                        SharedPreferences settings = getPreferences(Context.MODE_PRIVATE);
                        SharedPreferences.Editor editor = settings.edit();
                        editor.putString(PREF_ACCOUNT_NAME, accountName);
                        editor.commit();
                        AsyncLoadTasks.run(this);
                    }
                }
                break;
        }
    }

    /** Check that Google Play services APK is installed and up to date. */
    private boolean checkGooglePlayServicesAvailable() {
        final int connectionStatusCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
        if (GooglePlayServicesUtil.isUserRecoverableError(connectionStatusCode)) {
            showGooglePlayServicesAvailabilityErrorDialog(connectionStatusCode);
            return false;
        }
        return true;
    }

    private void haveGooglePlayServices() {
        // check if there is already an account selected
        if (credential.getSelectedAccountName() == null) {
            // ask user to choose account
            chooseAccount();
        } else {
            // load calendars
            AsyncLoadTasks.run(this);
        }
    }

    private void chooseAccount() {
        startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
    }
}

这是我的build.gradle文件：

apply plugin: 'com.android.application'

repositories {
    mavenCentral()
    mavenLocal()  // For google-play-services is not on Maven Central.
}

dependencies {
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:design:26.1.0'
    implementation 'com.google.apis:google-api-services-tasks:v1-rev48-1.23.0' exclude module: 'httpclient'
    implementation 'com.google.api-client:google-api-client-android:1.23.0' exclude module: 'httpclient'
    implementation 'com.google.http-client:google-http-client-gson:1.23.0' exclude module: 'httpclient'
    implementation 'com.google.android.gms:play-services-identity:7.3.0'
    implementation 'com.android.support:support-annotations:+'
}

android {
    compileSdkVersion 26

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 26
    }


    buildTypes {
        release {
            minifyEnabled true
            proguardFile 'proguard-google-api-client.txt'
            proguardFile getDefaultProguardFile('proguard-android.txt')
        }
    }

}

这是崩溃后立即从帐户选择器中选择我的帐户的Logcat。

E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
    Process: com.example.googledrivetestapp, PID: 25164
    java.lang.RuntimeException: An error occurred while executing doInBackground()
        at android.os.AsyncTask$3.done(AsyncTask.java:309)
        at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
        at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
        at java.util.concurrent.FutureTask.run(FutureTask.java:242)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
        at java.lang.Thread.run(Thread.java:818)
     Caused by: java.lang.IllegalArgumentException: the name must not be empty: null
        at android.accounts.Account.<init>(Account.java:48)
        at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
        at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential.getToken(GoogleAccountCredential.java:267)
        at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential$RequestHandler.intercept(GoogleAccountCredential.java:292)
        at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:868)
        at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
        at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
        at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
        at com.example.googledrivetestapp.AsyncLoadTasks.doInBackground(AsyncLoadTasks.java:19)
        at com.example.googledrivetestapp.CommonAsyncTask.doInBackground(CommonAsyncTask.java:34)
        at com.example.googledrivetestapp.CommonAsyncTask.doInBackground(CommonAsyncTask.java:12)
        at android.os.AsyncTask$2.call(AsyncTask.java:295)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
        at java.lang.Thread.run(Thread.java:818) 

有没有人可以结束我的痛苦？

1 个答案:

答案 0 :(得分：0)

通过链接下载： https://github.com/gsuitedevs/android-samples.git

打开项目“弃用”。此示例将帮助访问帐户。如果您在开发者控制台中收到了应用程序凭据：https://console.cloud.google.com

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