谷歌驱动器SDK错误 [英] Google Drive SDK Error
本文介绍了谷歌驱动器SDK错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这是我的code访问谷歌驱动器，从 ArtOfWarfare 的<一个主要采取href="http://stackoverflow.com/questions/12164024/android-open-and-save-files-to-from-google-drive-sdk/12321331#comment18575553_12321331">this帖子：
This is my code to access Google Drive, taken largely from ArtOfWarfare in this post:
public class MainActivity extends Activity {
class OnTokenAcquired implements AccountManagerCallback<Bundle> {
boolean alreadyTriedAgain;
public OnTokenAcquired() {
// TODO Auto-generated constructor stub
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 3025) {
switch (resultCode) {
case RESULT_OK:
AccountManager am = AccountManager.get(getApplicationContext());
am.getAuthToken(am.getAccounts()[0],
"ouath2:" + DriveScopes.DRIVE,
new Bundle(),
true,
new OnTokenAcquired(),
null);
break;
case RESULT_CANCELED:
// This probably means the user refused to log in. Explain to them why they need to log in.
break;
default:
// This isn't expected... maybe just log whatever code was returned.
break;
}
} else {
// Your application has other intents that it fires off besides the one for Drive's log in if it ever reaches this spot. Handle it here however you'd like.
}
}
@Override
public void run(AccountManagerFuture<Bundle> result) {
try {
final String token = result.getResult().getString(AccountManager.KEY_AUTHTOKEN);
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory();
Drive.Builder b = new Drive.Builder(httpTransport, jsonFactory, null);
b.setJsonHttpRequestInitializer(new JsonHttpRequestInitializer() {
@Override
public void initialize(JsonHttpRequest request) throws IOException {
DriveRequest driveRequest = (DriveRequest) request;
driveRequest.setPrettyPrint(true);
driveRequest.setKey("my number here");
driveRequest.setOauthToken(token);
}
});
final Drive drive = b.build();
final com.google.api.services.drive.model.File body = new com.google.api.services.drive.model.File();
body.setTitle("My Test File");
body.setDescription("A Test File");
body.setMimeType("text/plain");
File newFile = new File("this");
final FileContent mediaContent = new FileContent("text/plain", newFile);
new Thread(new Runnable() {
public void run() {
try {
com.google.api.services.drive.model.File file = drive.files().insert(body, mediaContent).execute();
alreadyTriedAgain = false; // Global boolean to make sure you don't repeatedly try too many times when the server is down or your code is faulty... they'll block requests until the next day if you make 10 bad requests, I found.
} catch (IOException e) {
if (!alreadyTriedAgain) {
alreadyTriedAgain = true;
AccountManager am = AccountManager.get(getApplicationContext());
am.invalidateAuthToken(am.getAccounts()[0].type, null); // Requires the permissions MANAGE_ACCOUNTS & USE_CREDENTIALS in the Manifest
am.getAuthToken(am.getAccounts()[0],
"ouath2:" + DriveScopes.DRIVE,
new Bundle(),
true,
new OnTokenAcquired(),
null);
} else {
// Give up. Crash or log an error or whatever you want.
}
}
}
}).start();
Intent launch = (Intent)result.getResult().get(AccountManager.KEY_INTENT);
if (launch != null) {
startActivityForResult(launch, 3025);
return; // Not sure why... I wrote it here for some reason. Might not actually be necessary.
}
} catch (OperationCanceledException e) {
// Handle it...
} catch (AuthenticatorException e) {
// Handle it...
} catch (IOException e) {
// Handle it...
}
}
}
private java.io.File downloadGFileToJFolder(Drive drive, String token, File gFile, java.io.File jFolder) throws IOException {
if (gFile.toURI() != null && gFile.toURI().toString().length() > 0 ) {
if (jFolder == null) {
jFolder = Environment.getExternalStorageDirectory();
jFolder.mkdirs();
}
try {
HttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet(gFile.toURI());
get.setHeader("Authorization", "Bearer " + token);
org.apache.http.HttpResponse response = client.execute(get);
InputStream inputStream = response.getEntity().getContent();
jFolder.mkdirs();
java.io.File jFile = new java.io.File(jFolder.getAbsolutePath() + "/" + gFile.getName()); // getGFileName() is my own method... it just grabs originalFilename if it exists or title if it doesn't.
FileOutputStream fileStream = new FileOutputStream(jFile);
byte buffer[] = new byte[1024];
int length;
while ((length=inputStream.read(buffer))>0) {
fileStream.write(buffer, 0, length);
}
fileStream.close();
inputStream.close();
return jFile;
} catch (IOException e) {
// Handle IOExceptions here...
return null;
}
} else {
// Handle the case where the file on Google Drive has no length here.
return null;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getApplicationContext();
AccountManager am = AccountManager.get(this);
am.getAuthToken(am.getAccounts()[0],
"ouath2:" + DriveScopes.DRIVE,
new Bundle(),
true,
new OnTokenAcquired(),
null);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
我收到以下错误，当我启动应用程序（Android系统也是短暂的停顿）：
I get the following error when I launch the app (Android System also stops momentarily):
11-26 22:31:03.093: E/AndroidRuntime(4288): FATAL EXCEPTION: main
11-26 22:31:03.093: E/AndroidRuntime(4288): java.lang.RuntimeException: Unable to start activity ComponentInfo{android/android.accounts.GrantCredentialsPermissionActivity}: java.lang.NullPointerException
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2225)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2260)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.ActivityThread.access$600(ActivityThread.java:139)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1277)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.os.Handler.dispatchMessage(Handler.java:99)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.os.Looper.loop(Looper.java:156)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.ActivityThread.main(ActivityThread.java:5045)
11-26 22:31:03.093: E/AndroidRuntime(4288): at java.lang.reflect.Method.invokeNative(Native Method)
11-26 22:31:03.093: E/AndroidRuntime(4288): at java.lang.reflect.Method.invoke(Method.java:511)
11-26 22:31:03.093: E/AndroidRuntime(4288): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
11-26 22:31:03.093: E/AndroidRuntime(4288): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
11-26 22:31:03.093: E/AndroidRuntime(4288): at dalvik.system.NativeStart.main(Native Method)
11-26 22:31:03.093: E/AndroidRuntime(4288): Caused by: java.lang.NullPointerException
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.accounts.GrantCredentialsPermissionActivity.onCreate(GrantCredentialsPermissionActivity.java:84)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.Activity.performCreate(Activity.java:4543)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071)
11-26 22:31:03.093: E/AndroidRuntime(4288): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2181)
11-26 22:31:03.093: E/AndroidRuntime(4288): ... 11 more
另外，我的手机显示一个陌生的通知：要求的权限帐户天气。任何人有任何的想法是什么引起的？
In addition, my phone shows a strange notification: "Permission Requested for account Weather". Anyone have any idea what's causing this?
推荐答案
尝试更换这样的：
am.getAccounts()[0],
这一点：
am.getAccountsByType("com.google")[0],
我的code中的其他话题结束了简化，假设它发现的第一个帐户将是一个谷歌帐户（等都有谷歌驱动器）。在code，我们实际上是在应用程序使用的检查，以确保它是一个谷歌帐户（再进行进一步的检查，以确保它是一个公司账户，这就是为什么我简化了code到我的共享。 ）
My code in the other topic was over simplified to assume that the first account it found would be a Google Account (and so have a Google Drive). The code we actually used in the app checked to make sure it was a Google Account (and then performed further checks to make sure it was a company account, which is why I simplified the code to what I shared.)
这篇关于谷歌驱动器SDK错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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