牛轧糖上的android.os.TransactionTooLargeException [英] android.os.TransactionTooLargeException on Nougat

问题描述

我将Nexus 5X更新为Android N，现在当我在其上安装应用程序(调试或发行版)时，每次在具有Bundle附加功能的屏幕过渡上都得到TransactionTooLargeException.该应用程序可在所有其他设备上运行. Nexus 5X可以在PlayStore上使用具有几乎相同代码的旧版应用程序. 有人遇到同样的问题吗?

I updated Nexus 5X to Android N, and now when I install the app (debug or release) on it I am getting TransactionTooLargeException on every screen transition that has Bundle in extras. The app is working on all other devices. The old app that is on PlayStore and has mostly same code is working on Nexus 5X. Is anyone having the same issue?

java.lang.RuntimeException: android.os.TransactionTooLargeException: data parcel size 592196 bytes
   at android.app.ActivityThread$StopInfo.run(ActivityThread.java:3752)
   at android.os.Handler.handleCallback(Handler.java:751)
   at android.os.Handler.dispatchMessage(Handler.java:95)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6077)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: android.os.TransactionTooLargeException: data parcel size 592196 bytes
   at android.os.BinderProxy.transactNative(Native Method)
   at android.os.BinderProxy.transact(Binder.java:615)
   at android.app.ActivityManagerProxy.activityStopped(ActivityManagerNative.java:3606)
   at android.app.ActivityThread$StopInfo.run(ActivityThread.java:3744)
   at android.os.Handler.handleCallback(Handler.java:751) 
   at android.os.Handler.dispatchMessage(Handler.java:95) 
   at android.os.Looper.loop(Looper.java:154) 
   at android.app.ActivityThread.main(ActivityThread.java:6077) 
   at java.lang.reflect.Method.invoke(Native Method) 
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 

推荐答案

最后，我的问题是保存在SaveInstance上的内容，而不是发送给下一个活动的内容.我删除了无法控制对象大小(网络响应)的所有保存，现在可以使用了.

At the end, my problem was with things that were being saved onSaveInstance, and not with things that were being sent to next activity. I removed all saves where I can't control a size of objects (network responses), and now it's working.

更新:

为保留大量数据，Google建议使用保留实例的Fragment进行处理.想法是创建一个空的片段，不带所有必填字段的视图，否则将其保存在Bundle中.将setRetainInstance(true);添加到Fragment的onCreate方法中. 然后将数据保存在Activity的onDestroy上的Fragment中，并将其加载到onCreate上. 这是一个活动示例:

To preserve big chunks of data, Google is suggesting to do it with Fragment that retains instance. Idea is to create empty Fragment without a view with all necessary fields, that would otherwise be saved in Bundle. Add setRetainInstance(true); to Fragment's onCreate method. And then save data in Fragment on Activity's onDestroy and load them onCreate. Here is an example of Activity:

public class MyActivity extends Activity {

    private DataFragment dataFragment;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // find the retained fragment on activity restarts
        FragmentManager fm = getFragmentManager();
        dataFragment = (DataFragment) fm.findFragmentByTag("data");

        // create the fragment and data the first time
        if (dataFragment == null) {
            // add the fragment
            dataFragment = new DataFragment();
            fm.beginTransaction().add(dataFragment, "data").commit();
            // load the data from the web
            dataFragment.setData(loadMyData());
        }

        // the data is available in dataFragment.getData()
        ...
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        // store the data in the fragment
        dataFragment.setData(collectMyLoadedData());
    }
}

片段示例:

public class DataFragment extends Fragment {

    // data object we want to retain
    private MyDataObject data;

    // this method is only called once for this fragment
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // retain this fragment
        setRetainInstance(true);
    }

    public void setData(MyDataObject data) {
        this.data = data;
    }

    public MyDataObject getData() {
        return data;
    }
}

有关它的更多信息，您可以在此处阅读.

More about it, you can read here.

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