我得到了一个TransactionTooLargeException。无法复制的。文件里说

The Binder transaction failed because it was too large. During a remote procedure call, the arguments and the return value of the call are transferred as Parcel objects stored in the Binder transaction buffer. If the arguments or the return value are too large to fit in the transaction buffer, then the call will fail and TransactionTooLargeException will be thrown. ... There are two possible outcomes when a remote procedure call throws TransactionTooLargeException. Either the client was unable to send its request to the service (most likely if the arguments were too large to fit in the transaction buffer), or the service was unable to send its response back to the client (most likely if the return value was too large to fit in the transaction buffer). ...

在某个地方,我传递或接收的参数超出了未知的限制。在哪里?

stacktrace没有显示任何有用的东西:

java.lang.RuntimeException: Adding window failed
at android.view.ViewRootImpl.setView(ViewRootImpl.java:548)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:406)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:320)
at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:152)
at android.view.Window$LocalWindowManager.addView(Window.java:557)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2897)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$600(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1262)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:4977)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.os.TransactionTooLargeException
at android.os.BinderProxy.transact(Native Method)
at android.view.IWindowSession$Stub$Proxy.add(IWindowSession.java:569)
at android.view.ViewRootImpl.setView(ViewRootImpl.java:538)
... 16 more
android.os.TransactionTooLargeException
at android.os.BinderProxy.transact(Native Method)
at android.view.IWindowSession$Stub$Proxy.add(IWindowSession.java:569)
at android.view.ViewRootImpl.setView(ViewRootImpl.java:538)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:406)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:320)
at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:152)
at android.view.Window$LocalWindowManager.addView(Window.java:557)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2897)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$600(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1262)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:4977)
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:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)

这似乎和观点有关?这与远程过程调用有什么关系?

可能重要的是:Android版本:4.0.3,设备:HTC One X


当前回答

@Vaiden的回答帮助了我。我不明白为什么短列表会引发这种异常。我有许多片段和一对夫妇的ViewPagers与列表。所以,每次我开始另一个活动或停止一个程序(关闭屏幕),我捕捉到这个异常(通常在小米)。

我发现所有的片段调用他们的onSaveInstanceState()事件,并在最后托管活动调用onSaveInstanceState()之前onStop()。之后发生了撞车事故。因此,我理解许多短列表(大小为10-100 Kb)可以引发TransactionTooLargeException异常。

您可以通过将数据写入数据库,然后通过它们的id获取项来解决这个问题。通过这种方式,你可以将一个id列表传递给一个Activity/Fragment。

但如果你想要一个临时的快速方法,就这么做。

1)创建一个保留实例片段,该片段将在活动重新创建期间存活。

class SavedInstanceFragment : Fragment() {

    // This map will hold bundles from different sources (tag -> bundle).
    private lateinit var bundleMap: HashMap<String, Bundle?>


    // This method is only called once for this fragment.
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        retainInstance = true
        bundleMap = HashMap()
    }

    fun pushData(key: String, bundle: Bundle): SavedInstanceFragment {
        if (bundleMap[key] == null) {
            bundleMap[key] = bundle
        } else {
            bundleMap[key]!!.putAll(bundle)
        }
        return this
    }

    fun popData(key: String): Bundle? {
        val data = bundleMap[key]
        bundleMap[key] = null
        return data
    }

    fun removeData(key: String) {
        bundleMap.remove(key)
    }


    companion object {

        private val TAG = SavedInstanceFragment::class.java.simpleName

        // Create the fragment with this method in `onCreate()` of an activity.
        // Then you can get this fragment with this method again.
        fun getInstance(fragmentManager: FragmentManager): SavedInstanceFragment {
            var out = fragmentManager.findFragmentByTag(TAG) as SavedInstanceFragment?

            if (out == null) {
                out = SavedInstanceFragment()
                fragmentManager.beginTransaction().add(out, TAG).commit()
            }
            return out
        }
    }
}

2)在你的活动的onCreate()持有问题片段,创建这个片段。它将在活动娱乐中存活。您应该在其他片段添加到FragmentManager之前创建它,因为这个操作是异步的。

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity)

    if (savedInstanceState == null) {
        SavedInstanceFragment.getInstance(supportFragmentManager)
    }

    ...
}

3)在每个问题片段中添加这些行。你应该在任何地方使用getInstance(activity!!. supportfragmentmanager)访问一个保留实例片段,这样你就可以在FragmentManager中找到它。如果使用childFragmentManager作为getInstance()的参数,那么您将创建另一个片段并崩溃。

也可以在读取参数并设置包后清除参数,例如,在onSaveInstanceState: arguments中?.clear()。这是非常重要的,因为当你创建一个新的片段时,参数会留在内存中。当你稍后返回到当前片段并旋转屏幕时,数据不会丢失,因为它们已经包含在一个bundle中,并将在onCreate中读取。

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    val bundle = if (savedInstanceState == null) {
        // Remove old data in order not to show wrong information.
        SavedInstanceFragment.getInstance(activity!!.supportFragmentManager).removeData(TAG)
        null
    } else {
        SavedInstanceFragment.getInstance(activity!!.supportFragmentManager).popData(TAG)
    }
    (bundle ?: arguments)?.run { // I access 'bundle' or 'arguments', depending if it is not first or first call of 'onCreate()'.
        token = getString(ARG_TOKEN)!!
        id = getInt(ARG_ID)
        items = getParcelableArrayList(ARG_ITEMS)
    }
}

override fun onSaveInstanceState(outState: Bundle) {
    // Create a copy of savedInstanceState and push to the retain-instance fragment.
    val bundle = (outState.clone() as Bundle).apply {
        putString(ARG_TOKEN, token)
        putInt(ARG_ID, id)
        putParcelableArrayList(ARG_ITEMS, items)
    }
    SavedInstanceFragment.getInstance(activity!!.supportFragmentManager).pushData(TAG, bundle)
    arguments?.clear() // Avoids an exception "java.lang.RuntimeException: android.os.TransactionTooLargeException: data parcel size xxxxxxx bytes".
    super.onSaveInstanceState(outState)
}


companion object {

    private val TAG = YourFragment::class.java.simpleName

    private const val ARG_TOKEN = "ARG_TOKEN"
    private const val ARG_ID = "ARG_ID"
    private const val ARG_ITEMS = "ARG_ITEMS"

    fun newInstance(token: String, id: Int, items: ArrayList<Item>?) =
        YourFragment().apply {
            arguments = Bundle().apply {
                putString(ARG_TOKEN, token)
                putInt(ARG_ID, id)
                putParcelableArrayList(ARG_ITEMS, items)
            }
        }
}

你可以使用Singleton代替持久片段。也可以阅读https://medium.com/@mdmasudparvez/android-os-transactiontoolargeexception-on-nougat-solved-3b6e30597345了解更多关于库和解决方案的信息。

我认为,如果在启动其他活动后删除了活动,则此解决方案将不起作用。您可以在打开“不将活动保留在开发人员选项中”复选框时勾选此行为(不要忘记在之后取消勾选)。在这种情况下,getFragmentManager()将是新的,您将不会得到旧的数据。当您从new activity返回时,您将在一个bundle中获得null。

其他回答

我也在三星S3上得到了这个例外。 我认为有两个根本原因,

如果你有位图,它会占用太多内存,使用缩小 你在drawable-_dpi文件夹中丢失了一些drawables, android在drawable中寻找它们,并调整它们的大小,使你的setContentView突然跳转并使用大量内存。

使用DDMS并在你播放你的应用程序时查看你的堆,这将给你一些关于哪个setcontentview正在创建问题的指示。

我复制了所有文件夹中的所有图纸,以摆脱问题2。

问题解决了。

将此添加到您的活动中

@Override
protected void onSaveInstanceState(Bundle oldInstanceState) {
    super.onSaveInstanceState(oldInstanceState);
    oldInstanceState.clear();
}

对我有用,希望对你也有帮助

This was happening in my app because I was passing a list of search results in a fragment's arguments, assigning that list to a property of the fragment - which is actually a reference to the same location in memory pointed to by the fragment's arguments - then adding new items to the list, which also changed the size of the fragment's arguments. When the activity is suspended, the base fragment class tries to save the fragment's arguments in onSaveInstanceState, which crashes if the arguments are larger than 1MB. For example:

private ArrayList<SearchResult> mSearchResults;

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    if (getArguments() != null && getArguments().getSerializable("SearchResults") != null) {
        mSearchResults = (ArrayList) getArguments().getSerializable("SearchResults");
    }
}

private void onSearchResultsObtained(ArrayList<SearchResult> pSearchResults) {

    // Because mSearchResults points to the same location in memory as the fragment's arguments
    // this will also increase the size of the arguments!
    mSearchResults.addAll(pSearchResults);
}

在这种情况下,最简单的解决方案是将列表的副本分配给片段的属性,而不是分配引用:

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    if (getArguments() != null && getArguments().getSerializable("SearchResults") != null) {

        // Copy value of array instead of reference
        mSearchResults = new ArrayList((ArrayList) getArguments().getSerializable("SearchResults"));
    }
}

一个更好的解决方案是不要在参数中传递这么多数据。

如果没有这个答案和TooLargeTool的帮助,我可能永远也不会找到这个。

TransactionTooLargeException已经困扰我们大约4个月了,我们终于解决了这个问题!

发生的是我们在ViewPager中使用FragmentStatePagerAdapter。用户将翻页并创建100多个片段(这是一个阅读应用程序)。

虽然我们在destroyItem()中正确地管理片段,但在android中 FragmentStatePagerAdapter的实现有一个bug,它保持了对以下列表的引用:

private ArrayList<Fragment.SavedState> mSavedState = new ArrayList<Fragment.SavedState>();

当Android的FragmentStatePagerAdapter尝试保存状态时,它将调用该函数

@Override
public Parcelable saveState() {
    Bundle state = null;
    if (mSavedState.size() > 0) {
        state = new Bundle();
        Fragment.SavedState[] fss = new Fragment.SavedState[mSavedState.size()];
        mSavedState.toArray(fss);
        state.putParcelableArray("states", fss);
    }
    for (int i=0; i<mFragments.size(); i++) {
        Fragment f = mFragments.get(i);
        if (f != null && f.isAdded()) {
            if (state == null) {
                state = new Bundle();
            }
            String key = "f" + i;
            mFragmentManager.putFragment(state, key, f);
        }
    }
    return state;
}

正如您所看到的,即使您正确地管理FragmentStatePagerAdapter子类中的片段,基类仍然会存储一个片段。SavedState用于创建的每个片段。TransactionTooLargeException会在数组被转储到parcelableArray时发生,而操作系统不希望它有100+项。

因此,我们的解决方案是重写saveState()方法,不为“状态”存储任何东西。

@Override
public Parcelable saveState() {
    Bundle bundle = (Bundle) super.saveState();
    bundle.putParcelableArray("states", null); // Never maintain any states from the base class, just null it out
    return bundle;
}

所以对我们来说,我们试图通过我们的AIDL接口发送一个太大的对象到远程服务。事务大小不能超过1MB。请求被分解为512KB的独立块,并通过接口一次发送一个。我知道这是一个残酷的解决方案,但是,嘿,它是Android:(