使用Android SDK 3.0进行Facebook登录会导致ANR或完全无法工作

Question

为了在Android应用中登录用户到Facebook，我正在尝试使用以下代码。用户登录后，应该获取所有朋友的位置。

不幸的是，这段代码有时会导致ANR（如在Google Play开发者控制台中报告的），有时它只是不起作用。如果我在Facebook内部删除应用程序（撤消权限），则权限对话框将在Android应用程序的下一次启动时再次显示。但是，如果应用程序已经具有权限，则会导致那些ANR或仅退出而不成功。

看起来有些部分是工作的，有些部分是错误的，不是吗？以下代码是登录和提取数据的正确方法吗？

package com.my.application;

import java.util.Arrays;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.preference.PreferenceManager;
import com.facebook.*;
import com.facebook.Session.OpenRequest;
import com.facebook.Session.StatusCallback;

public class FBLocations extends Activity {

    private Session.StatusCallback fbStatusCallback = new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state, Exception exception) { // callback for session state changes
            if (state.isOpened()) {
                Request.executeGraphPathRequestAsync(session, "me/friends/?access_token="+session.getAccessToken()+"&fields=id,name,location&limit=500", new Request.Callback() {
                    @Override
                    public void onCompleted(Response response) {
                        if (response != null) {
                            // do something with <response> now
                        }
                    }
                });
            }
        }
    };

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        try {
            openActiveSession(this, true, fbStatusCallback, Arrays.asList("friends_location"));
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static Session openActiveSession(Activity activity, boolean allowLoginUI, StatusCallback callback, List<String> permissions) {
        OpenRequest openRequest = new OpenRequest(activity).setPermissions(permissions).setLoginBehavior(SessionLoginBehavior.SSO_WITH_FALLBACK).setCallback(callback).setDefaultAudience(SessionDefaultAudience.FRIENDS);
        Session session = new Session.Builder(activity).build();
        if (SessionState.CREATED_TOKEN_LOADED.equals(session.getState()) || allowLoginUI) {
            Session.setActiveSession(session);
            session.openForRead(openRequest);
            return session;
        }
        return null;
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
    }

}

我也已经在Facebook上添加了应用程序的密钥哈希，包括调试和生产。不确定填充=是否也要写。

我无法按照Facebook的官方教程操作，因为我不使用SDK的登录按钮，也不在Android中使用片段。

编辑（2013年1月7日）：

在Hartok建议在回调的call()方法中将session.isOpened()替换为state.isOpened()后，现在50%的测试运行正常。尽管如此，在某些情况下，一切正常，在其他情况下（我没有做任何不同的事情），LogCat中出现以下错误：

01-07 01:55:29.882: W/System.err(30572): com.facebook.FacebookException: Log in attempt aborted.
at com.facebook.Session.close(Session.java:572)
at com.facebook.Session.setActiveSession(Session.java:755)
at my.app.package.FBImport.openActiveSession(FBImport.java:145) // this is: Session.setActiveSession(session);
at my.app.package.FBImport.access$5(FBImport.java:139)
at my.app.package.FBImport$4.run(FBImport.java:124)

什么导致了这个错误？是客户端的问题还是服务器的问题？顺便说一下，应用程序似乎在此之后冻结(ANR)。

如果我连续尝试连接两次，我会看到以下的LogCat输出:

java.lang.IllegalStateException: Cannot execute task: the task is already running.
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:550)
at android.os.AsyncTask.execute(AsyncTask.java:511)
at com.facebook.RequestAsyncTask.executeOnSettingsExecutor(RequestAsyncTask.java:186)
at com.facebook.Request.executeBatchAsync(Request.java:1094)
at com.facebook.Request.executeBatchAsync(Request.java:1073)
at com.facebook.Request.executeBatchAsync(Request.java:1055)
at com.facebook.Request.executeAsync(Request.java:852)

为什么会这样？任务为什么还在运行？

ANR描述（ANR keyDispatchingTimedOut）：

DALVIK THREADS:
(mutexes: tll=0 tsl=0 tscl=0 ghl=0)

"main" prio=5 tid=1 NATIVE
  | group="main" sCount=1 dsCount=0 obj=0x4184e9a0 self=0x40011010
  | sysTid=19301 nice=0 sched=0/0 cgrp=apps handle=1074414556
  | state=S schedstat=( 906984000 397085000 2526 ) utm=66 stm=24 core=0
  #00 pc 00017ee4 /system/lib/libc.so (epoll_wait+12)
  #01 pc 00014b09 /system/lib/libutils.so (android::Looper::pollInner(int)+96)
  #02 pc 00014d71 /system/lib/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+104)
  #03 pc 0005ed53 /system/lib/libandroid_runtime.so (android::NativeMessageQueue::pollOnce(_JNIEnv*, int)+22)
  #04 pc 0001e290 /system/lib/libdvm.so (dvmPlatformInvoke+112)
  #05 pc 0004d411 /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int const*, JValue*, Method const*, Thread*)+396)
  #06 pc 000276a0 /system/lib/libdvm.so
  #07 pc 0002b57c /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
  #08 pc 0005ff07 /system/lib/libdvm.so (dvmInvokeMethod(Object*, Method const*, ArrayObject*, ArrayObject*, ClassObject*, bool)+374)
  #09 pc 000677e1 /system/lib/libdvm.so
  #10 pc 000276a0 /system/lib/libdvm.so
  #11 pc 0002b57c /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+184)
  #12 pc 0005fc31 /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+272)
  #13 pc 000499fb /system/lib/libdvm.so
  #14 pc 00046871 /system/lib/libandroid_runtime.so
  #15 pc 00047533 /system/lib/libandroid_runtime.so (android::AndroidRuntime::start(char const*, char const*)+390)
  #16 pc 00000db7 /system/bin/app_process
  #17 pc 0001271f /system/lib/libc.so (__libc_init+38)
  #18 pc 00000ae8 /system/bin/app_process
  at android.os.MessageQueue.nativePollOnce(Native Method)
  at android.os.MessageQueue.next(MessageQueue.java:125)
  at android.os.Looper.loop(Looper.java:124)
  at android.app.ActivityThread.main(ActivityThread.java:5039)
  at java.lang.reflect.Method.invokeNative(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:511)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  at dalvik.system.NativeStart.main(Native Method)

"AsyncTask #2" prio=5 tid=17 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x4205f6d0 self=0x6742f940
  | sysTid=19354 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1732251672
  | state=S schedstat=( 82839000 103493000 646 ) utm=5 stm=3 core=0
  at java.lang.Object.wait(Native Method)
  - waiting on <0x4205f7f0> (a java.lang.VMThread) held by tid=17 (AsyncTask #2)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)

"Binder_3" prio=5 tid=16 NATIVE
  | group="main" sCount=1 dsCount=0 obj=0x41fed668 self=0x41838008
  | sysTid=19330 nice=0 sched=0/0 cgrp=apps handle=1742766600
  | state=S schedstat=( 1078000 818000 10 ) utm=0 stm=0 core=0
  #00 pc 00016fe4 /system/lib/libc.so (__ioctl+8)
  #01 pc 0002a97d /system/lib/libc.so (ioctl+16)
  #02 pc 00016ba1 /system/lib/libbinder.so (android::IPCThreadState::talkWithDriver(bool)+132)
  #03 pc 00017363 /system/lib/libbinder.so (android::IPCThreadState::joinThreadPool(bool)+154)
  #04 pc 0001b15d /system/lib/libbinder.so
  #05 pc 00011267 /system/lib/libutils.so (android::Thread::_threadLoop(void*)+114)
  #06 pc 0004679f /system/lib/libandroid_runtime.so (android::AndroidRuntime::javaThreadShell(void*)+66)
  #07 pc 00010dcd /system/lib/libutils.so
  #08 pc 0000e3d8 /system/lib/libc.so (__thread_entry+72)
  #09 pc 0000dac4 /system/lib/libc.so (pthread_create+160)
  at dalvik.system.NativeStart.run(Native Method)

"pool-1-thread-5" prio=5 tid=15 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x420423d0 self=0x673d8ab8
  | sysTid=19329 nice=0 sched=0/0 cgrp=apps handle=1732087560
  | state=S schedstat=( 6292000 7083000 36 ) utm=0 stm=0 core=2
  at java.lang.Object.wait(Native Method)
  - waiting on <0x42042528> (a java.lang.VMThread) held by tid=15 (pool-1-thread-5)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)

"pool-1-thread-4" prio=5 tid=14 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x42039040 self=0x673cb248
  | sysTid=19328 nice=0 sched=0/0 cgrp=apps handle=1732032152
  | state=S schedstat=( 8178000 7047000 32 ) utm=0 stm=0 core=3
  at java.lang.Object.wait(Native Method)
  - waiting on <0x42039160> (a java.lang.VMThread) held by tid=14 (pool-1-thread-4)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)

"pool-1-thread-3" prio=5 tid=13 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x42027140 self=0x673c95f8
  | sysTid=19327 nice=0 sched=0/0 cgrp=apps handle=1698808232
  | state=S schedstat=( 10642000 19156000 34 ) utm=1 stm=0 core=1
  at java.lang.Object.wait(Native Method)
  - waiting on <0x42027260> (a java.lang.VMThread) held by tid=13 (pool-1-thread-3)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)

"pool-1-thread-2" prio=5 tid=12 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x4201d958 self=0x672cd008
  | sysTid=19326 nice=0 sched=0/0 cgrp=apps handle=1731988480
  | state=S schedstat=( 17725000 16571000 59 ) utm=1 stm=0 core=3
  at java.lang.Object.wait(Native Method)
  - waiting on <0x4201da78> (a java.lang.VMThread) held by tid=12 (pool-1-thread-2)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)

"pool-1-thread-1" prio=5 tid=11 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x420156c8 self=0x65dc8818
  | sysTid=19325 nice=0 sched=0/0 cgrp=apps handle=1728232912
  | state=S schedstat=( 11166000 9311000 77 ) utm=0 stm=1 core=2
  at java.lang.Object.wait(Native Method)
  - waiting on <0x42015810> (a java.lang.VMThread) held by tid=11 (pool-1-thread-1)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1013)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1073)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)

"AsyncTask #1" prio=5 tid=10 WAIT
  | group="main" sCount=1 dsCount=0 obj=0x41fb5990 self=0x63bd3008
  | sysTid=19318 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1748684416
  | state=S schedstat=( 24263000 18668000 33 ) utm=1 stm=1 core=1
  at java.lang.Object.wait(Native Method)
  - waiting on <0x41fd07d0> (a java.lang.VMThread) held by tid=10 (AsyncTask #1)
  at java.lang.Thread.parkFor(Thread.java:1231)
  at sun.misc.Unsafe.park(Unsafe.java:323)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:159)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2019)
  at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:413)
  at java.util.concurrent.ThreadPoolExecutor...

- caw

---

你有尝试过在FB样本上使用这些哈希吗？ - gian1200

你能从开发者控制台复制粘贴堆栈跟踪吗？ - Jesse Chen

@gian1200：认证已经生效，就像我所描述的那样，所以密钥应该是没问题的。只是我同时包含了带填充“=”和不带填充的两个密钥。 - caw

@JesseChen：问题在于上面的代码中，当应该返回true时，session.isOpened()经常返回false，因为这是用来登录用户的。所以代码有问题。 - caw

是的，看起来这是预期的行为。 而且，在其中一个调用中，应该打开会话。 您还可以在回调中检查state.isOpened()方法。它应该是相同的结果，但也许在收到回调之前SessionState已经更新了。 - Hartok

Answer 1

登录尝试中止是因为在当前会话正在打开的同时调用了Session.setActiveSession()。

你是否可能调用了两次Session.setActiveSession()？

你可以尝试以下代码。虽然未经测试，但它部分源于SessionLoginSample。

private static Session openActiveSession(Activity activity, boolean allowLoginUI, StatusCallback callback, List<String> permissions, Bundle savedInstanceState) {

    OpenRequest openRequest = new OpenRequest(activity).setPermissions(permissions).setLoginBehavior(SessionLoginBehavior.SSO_WITH_FALLBACK).setCallback(callback).setDefaultAudience(SessionDefaultAudience.FRIENDS);

    Session session = Session.getActiveSession();
    if (session == null) {
        if (savedInstanceState != null) {
            session = Session.restoreSession(this, null, fbStatusCallback, savedInstanceState);
        }
        if (session == null) {
            session = new Session(this);
        }
        Session.setActiveSession(session);
        if (session.getState().equals(SessionState.CREATED_TOKEN_LOADED) || allowLoginUI) {
            session.openForRead(openRequest);
            return session;
        }
    }

    return null;
}

- Hartok

---

谢谢！我可以在不写入任何关于会话的数据，特别是关于savedInstanceState的数据的情况下使用那段代码吗？ - caw

似乎与那段代码相同：一旦一个请求被执行，所有后续请求都会被阻塞。应用程序再次冻结（ANR），我无法再次调用此方法进行新的请求。但是是什么导致了ANR？我正在从新线程中调用上面的方法。 - caw

Google Play 仪表板上的 ANR 描述是什么？ - Hartok

我已经在上面的问题中添加了完整的描述。 - caw

ANR描述中没有任何有趣的内容。 Logcat中有什么信息吗？ - Hartok

Answer 2

如果在用户已经授权权限的情况下出现卡顿，请尝试检查权限并根据权限是否存在排除代码。例如：

```if (hasPermissions) { // execute code that requires permissions }```

if(!session.getReadPermissions.contains("friends_location"){
    //restore or start the session and ask for the permission
}
else{
    //do stuff that would happen after the permission is already granted
}

我不在我的工作站上，所以方法可能有点偏差，但这是我尝试的一般想法。

- Wenger

---

谢谢！当我尝试实现你的想法时，它并没有完全奏效。但是我认为Hartok所建议的大致就是你所说的，不是吗？ - caw

相似。他检查会话状态和访问令牌。我也会这样做，但还要检查确认适当的权限。 - Wenger

Answer 3

请将您的 openActiveSession 调用替换为以下代码。

new Thread()
        {

            @Override
            public void run()
            {


openActiveSession(this, true, fbStatusCallback, Arrays.asList("friends_location"));


            }
        }.start();

- Changdeo Jadhav

---

谢谢！这真的可能吗？openActiveSession()难道不需要从UI线程调用吗？ - caw

使用runOnUiThread或在activity上创建一个Handler，对于所有的阻塞调用使用handler.postDelayed或handler.post方法。 - android2013

你是在谈论更改UI的方法必须如何调用，对吗？是的，在上面的代码中简单地调用runOnUiThread()就可以了。但我认为也许Facebook的代码（我无法更改）需要访问UI。 - caw