我坐在这件事上将近一个星期,找不到任何实际解释如何将GoogleSignIn连接到Google API的文档......
我正在尝试使用Google对用户进行身份验证(使用GoogleSignIn框架),然后阅读特定的日历。 iOS上的类似方法“开箱即用”,现在我正在尝试为Android做同样的事情。
我使用以下方式对用户进行身份验证:
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestScopes(new Scope("https://www.googleapis.com/auth/calendar.readonly"))
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
signInClient = GoogleSignIn.getClient(getContext(), gso);
signIn.setSize(SignInButton.SIZE_STANDARD);
signIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent signInIntent = signInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
}
});
GoogleSignInAccount account = GoogleSignIn.getLastSignedInAccount(getContext());
if (account == null) {
setSignInVisible(true);
} else {
setSignInVisible(false);
if (account.getIdToken() != null) {
AuthCredential credential = GoogleAuthProvider.getCredential(account.getIdToken(), null);
FirebaseAuth mAuth = FirebaseAuth.getInstance();
mAuth.signInWithCredential(credential);
}
}
之后,尝试使用以下方法访问Calendar API:
Calendar HttpTransport transport = AndroidHttp.newCompatibleTransport();
JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
GoogleSignInAccount gsia = GoogleSignIn.getLastSignedInAccount(getContext());
GoogleCredential gc = new GoogleCredential().setAccessToken(gsia.getIdToken());
mService = new com.google.api.services.calendar.Calendar.Builder(
transport, jsonFactory, gc)
.setApplicationName("MyApp")
.build();
Events events = mService.events().list(CalendarActivity._dataStore.getConfigString(CalendarActivity.instance.getString(R.string.config_google_calendar_key)))
.setTimeMin(dtFourDaysBack)
.setTimeMax(dtTwoMonthFuture)
.setOrderBy("startTime")
.setSingleEvents(true)
.execute();
但是,执行导致401-未经授权的错误...... 我做错了吗? 重要的是要提到我从帐户对象中获取用户信息(我看到了电子邮件,我得到了令牌等)。
答案 0 :(得分:2)
我刚刚解决了这个问题,我希望这将有助于所有遭受无法解释的401 - 未经授权的错误的人。
问题在于凭证的生成。 应该创建的方式是:
private static final String[] SCOPES = { CalendarScopes.CALENDAR_READONLY };
final GoogleSignInAccount account = GoogleSignIn.getLastSignedInAccount(getContext());
GoogleAccountCredential mCredential = GoogleAccountCredential.usingOAuth2(
mainActivity.instance, Arrays.asList(SCOPES))
.setSelectedAccountName(account.getAccount().name)
.setBackOff(new ExponentialBackOff());
请注意凭据的用法。它不是GoogleCredentials
。我无法在任何地方找到的东西是setSelectedAccountName
我需要通过试验得到的东西(太糟糕了我花了大约一个星期才尝试那个......)。
当您实施它时,请确保将其设置为干净(仅当account
对象不是null
等时使用console.log()
对象。
祝大家好运......
答案 1 :(得分:0)
可能是您试图在没有任何同步过程的情况下调用您的日历代码。请尝试以下集成Google日历的代码。 处理Google Calendar API调用的异步任务。将API调用放在自己的任务中可确保UI保持响应。
private class MakeRequestTask extends AsyncTask<Void, Void, List<String>> {
private com.google.api.services.calendar.Calendar mService = null;
private Exception mLastError = null;
MakeRequestTask(GoogleAccountCredential credential) {
HttpTransport transport = AndroidHttp.newCompatibleTransport();
JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
mService = new com.google.api.services.calendar.Calendar.Builder(
transport, jsonFactory, credential)
.setApplicationName("Google Calendar API Android Quickstart")
.build();
}
@Override
protected List<String> doInBackground(Void... params) {
try {
return getDataFromApi();
} catch (Exception e) {
mLastError = e;
cancel(true);
return null;
}
}
private List<String> getDataFromApi() throws IOException {
// List the next 10 events from the primary calendar.
DateTime now = new DateTime(System.currentTimeMillis());
List<String> eventStrings = new ArrayList<String>();
Events events = mService.events().list("primary")
.setMaxResults(10)
.setTimeMin(now)
.setOrderBy("startTime")
.setSingleEvents(true)
.execute();
List<Event> items = events.getItems();
for (Event event : items) {
DateTime start = event.getStart().getDateTime();
if (start == null) {
// All-day events don't have start times, so just use
// the start date.
start = event.getStart().getDate();
}
eventStrings.add(
String.format("%s (%s)", event.getSummary(), start));
}
return eventStrings;
}
@Override
protected void onPreExecute() {
mOutputText.setText("");
mProgress.show();
}
@Override
protected void onPostExecute(List<String> output) {
mProgress.hide();
if (output == null || output.size() == 0) {
//"No results returned
} else {
//Data retrieved using the Google Calendar API
}
}
}
有关详细信息,请查看google documentation description