我正在尝试在Android Things平台上获取用户的Calendar事件，并发现以下教程显示了执行此操作的方法： node type
我从移动设备上的用户那里获得了授权码，并将其发送到Android Things设备。然后，我必须在Android Things上完成OAuth流程，但这就是我遇到的问题。这是我遇到的错误：
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.subs.projecthera/com.subs.projecthera.MainActivity}: android.os.NetworkOnMainThreadException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1450)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:102)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:90)
at java.net.InetAddress.getAllByName(InetAddress.java:787)
at com.android.okhttp.Dns$1.lookup(Dns.java:39)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:258)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:218)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getOutputStream(Unknown Source:0)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:77)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:981)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:283)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest.execute(GoogleAuthorizationCodeTokenRequest.java:158)
at com.subs.projecthera.Core.AuthHelper.<init>(AuthHelper.java:40)
at com.subs.projecthera.MainActivity.onCreate(MainActivity.java:48)
at android.app.Activity.performCreate(Activity.java:7010)
at android.app.Activity.performCreate(Activity.java:7001)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
我有一个AuthHelper类：
Activity activity;
Context context;
public AuthHelper(String authCode) {
// Exchange authCode for token
if (authCode != null) {
String CLIENT_SECRET_DATA = "{\"web\":{\"client_id\":\"529614308595-q103hbbbktc53tfrudofocg76a390bo1.apps.googleusercontent.com\",\"project_id\":\"smart-mirror-88c35\",\"auth_uri\":\"https://accounts.google.com/o/oauth2/auth\",\"token_uri\":\"https://oauth2.googleapis.com/token\",\"auth_provider_x509_cert_url\":\"https://www.googleapis.com/oauth2/v1/certs\"}}";
try {
GoogleClientSecrets GCS = GoogleClientSecrets.load(new JacksonFactory(), new StringReader(CLIENT_SECRET_DATA));
GoogleTokenResponse tokenResponse = new GoogleAuthorizationCodeTokenRequest(
new NetHttpTransport(),
new JacksonFactory(),
"https://www.googleapis.com/oauth2/v4/token",
GCS.getDetails().getClientId(),
GCS.getDetails().getClientSecret(),
authCode,
"" )
.execute();
buildCredentialsAndUpdateActivityModel(tokenResponse);
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static GoogleCredential mGoogleCredential;
private void buildCredentialsAndUpdateActivityModel(GoogleTokenResponse tokenResponse) {
String CLIENT_SECRET_DATA = "{\"web\":{\"client_id\":\"529614308595-q103hbbbktc53tfrudofocg76a390bo1.apps.googleusercontent.com\",\"project_id\":\"smart-mirror-88c35\",\"auth_uri\":\"https://accounts.google.com/o/oauth2/auth\",\"token_uri\":\"https://oauth2.googleapis.com/token\",\"auth_provider_x509_cert_url\":\"https://www.googleapis.com/oauth2/v1/certs\"}}";
try {
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(new JacksonFactory(), new StringReader(CLIENT_SECRET_DATA));
mGoogleCredential = new GoogleCredential.Builder()
.setJsonFactory(new JacksonFactory())
.setTransport(new NetHttpTransport())
.setClientSecrets(clientSecrets).build().setFromTokenResponse(tokenResponse);
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean storeOAuth2TokenData(String storageID, GoogleCredential toStore) {
boolean wasStored = false;
try {
File oauth2StorageFolder = new File(context.getFilesDir(), "oauth2StorageFolder");
oauth2StorageFolder.mkdirs();
FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(oauth2StorageFolder);
DataStore storedCredentialDataStore = fileDataStoreFactory.getDataStore(storageID);//<new StoredCredential()>(storageID)
//val oauth2Credential = Credential(BearerToken.authorizationHeaderAccessMethod()).setFromTokenResponse(tokenResponse)
StoredCredential storedOAuth2Credential = new StoredCredential(toStore);
storedCredentialDataStore.set(storageID, storedOAuth2Credential);
wasStored = true;
} catch (Exception exception) {
//logInfo("Exception storing OAuth2TokenData :" + exception.localizedMessage)
}
return wasStored;
}
private TokenResponse getOAuth2TokenDataFromStore(String storageID) {
TokenResponse tokenResponse = null;
try {
File oauth2StorageFolder = new File(context.getFilesDir(), "oauth2StorageFolder");
oauth2StorageFolder.mkdirs();
FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(oauth2StorageFolder);
DataStore storedCredentialDataStore = fileDataStoreFactory.getDataStore(storageID);//<StoredCredential>(storageID);
StoredCredential storedCredential = (StoredCredential) storedCredentialDataStore.get(storageID);
if (storedCredential != null) {
tokenResponse = new TokenResponse();
tokenResponse.setAccessToken(storedCredential.getAccessToken());
tokenResponse.setRefreshToken(storedCredential.getRefreshToken());
if (storedCredential.getExpirationTimeMilliseconds() != null) {
tokenResponse.setExpiresInSeconds(TimeUnit.MILLISECONDS.toSeconds(storedCredential.getExpirationTimeMilliseconds()));
}
}
} catch (Exception exception) {
//logInfo("Exception getting OAuth2TokenData :" + exception.localizedMessage)
}
return tokenResponse;
}
我有一个GoogleCalendarHelper：
public GoogleCalendarHelper() {
Calendar calendarAPIClient = new Calendar(new NetHttpTransport(), new JacksonFactory(), AuthHelper.mGoogleCredential);
calendarAPIClient.events();
Log.e("SOMETHING", "");
}
正在从我的MainActivity的onCreate方法调用代码。
AuthHelper AH = new AuthHelper(GoogleSignIn.getAuthCode(this));
GoogleCalendarHelper GCH = new GoogleCalendarHelper();
我意识到我可能必须使用AsyncTask，但是如何在其中实现呢？这是获取日历事件信息的最佳方法，还是有更好的方法？
谢谢
答案 0 :(得分：1)
错误日志非常清楚：主线程上的网络。
您正在主线程上执行日历请求，这是一个网络请求。
您必须在后台执行此操作，一些常见的解决方案是协程，RxJava，Callable / Runnable，使用服务，手动管理线程甚至AsyncTask（已弃用）。
哪种解决方案真正取决于您，但是在Android和Android Things上，禁止在UI线程上长时间运行操作。