取消編組時未找到類：android.support.v7.widget.Toolbar $ SavedState

Question

我正在使用Maps API創建一個簡單的Android應用程序，並且我得到了一個我無法解決的奇怪錯誤。它通常發生在我旋轉我的設備時。我使用谷歌的服務8.4.0

4-23 15:39:47.503 9419-9419/com.licenta.vladut.mmap E/Parcel: Class not found when unmarshalling: android.support.v7.widget.Toolbar$SavedState 
                   java.lang.ClassNotFoundException: android.support.v7.widget.Toolbar$SavedState 
                    at java.lang.Class.classForName(Native Method) 
                    at java.lang.Class.forName(Class.java:308) 
                    at android.os.Parcel.readParcelableCreator(Parcel.java:2275) 
                    at android.os.Parcel.readParcelable(Parcel.java:2239) 
                    at android.os.Parcel.readValue(Parcel.java:2146) 
                    at android.os.Parcel.readSparseArrayInternal(Parcel.java:2540) 
                    at android.os.Parcel.readSparseArray(Parcel.java:1868) 
                    at android.os.Parcel.readValue(Parcel.java:2203) 
                    at android.os.Parcel.readArrayMapInternal(Parcel.java:2479) 
                    at android.os.BaseBundle.unparcel(BaseBundle.java:221) 
                    at android.os.Bundle.getBundle(Bundle.java:782) 
                    at com.google.android.gms.maps.internal.ao.a(:com.google.android.gms.alldynamite:74) 
                    at maps.ei.bu.a(Unknown Source) 
                    at maps.ei.n.a(Unknown Source) 
                    at com.google.android.gms.maps.internal.i$a.onTransact(:com.google.android.gms.alldynamite:107) 
                    at android.os.Binder.transact(Binder.java:380) 
                    at com.google.android.gms.maps.internal.IMapFragmentDelegate$zza$zza.onCreateView(Unknown Source) 
                    at com.google.android.gms.maps.SupportMapFragment$zza.onCreateView(Unknown Source) 
                    at com.google.android.gms.dynamic.zza$4.zzb(Unknown Source) 
                    at com.google.android.gms.dynamic.zza.zza(Unknown Source) 
                    at com.google.android.gms.dynamic.zza.onCreateView(Unknown Source) 
                    at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source) 
                    at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
                    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1036) 
                    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1230) 
                    at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2315) 
                    at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120) 
                    at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:357) 
                    at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31) 
                    at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:80) 
                    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733) 
                    at android.view.LayoutInflater.inflate(LayoutInflater.java:482) 
                    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
                    at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
                    at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276) 
                    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:136) 
                    at com.licenta.vladut.mmap.MainActivity.onCreate(MainActivity.java:54) 
                    at android.app.Activity.performCreate(Activity.java:6020) 
                    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105) 
                    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2259) 
                    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368) 
                    at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3947) 
                    at android.app.ActivityThread.access$900(ActivityThread.java:149) 
                    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1290) 
                    at android.os.Handler.dispatchMessage(Handler.java:102) 
                    at android.os.Looper.loop(Looper.java:135) 
                    at android.app.ActivityThread.main(ActivityThread.java:5292) 
                    at java.lang.reflect.Method.invoke(Native Method) 
                    at java.lang.reflect.Method.invoke(Method.java:372) 
                    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908) 
                    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703) 
                   Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v7.widget.Toolbar$SavedState" on path: DexPathList[[zip file "/data/data/com.google.android.gms/app_chimera/m/00000000/DynamiteModules-prod.apk"],nativeLibraryDirectories=[/data/data/com.google.android.gms/app_chimera/m/00000000/n/armeabi-v7a, /vendor/lib, /system/lib]] 
                   at dalvik.system.BaseDexClassLoader.f 
04-23 15:39:47.503 9419-9419/com.licenta.vladut.mmap D/AndroidRuntime: Shutting down VM 
04-23 15:39:47.505 9419-9419/com.licenta.vladut.mmap E/AndroidRuntime: FATAL EXCEPTION: main 
                     Process: com.licenta.vladut.mmap, PID: 9419 
                     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.licenta.vladut.mmap/com.licenta.vladut.mmap.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment 
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2306) 
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368) 
                      at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3947) 
                      at android.app.ActivityThread.access$900(ActivityThread.java:149) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1290) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:135) 
                      at android.app.ActivityThread.main(ActivityThread.java:5292) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703) 
                     Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment 
                      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763) 
                      at android.view.LayoutInflater.inflate(LayoutInflater.java:482) 
                      at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 
                      at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 
                      at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276) 
                      at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:136) 
                      at com.licenta.vladut.mmap.MainActivity.onCreate(MainActivity.java:54) 
                      at android.app.Activity.performCreate(Activity.java:6020) 
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105) 
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2259) 
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368)  
                      at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3947)  
                      at android.app.ActivityThread.access$900(ActivityThread.java:149)  
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1290)  
                      at android.os.Handler.dispatchMessage(Handler.java:102)  
                      at android.os.Looper.loop(Looper.java:135)  
                      at android.app.ActivityThread.main(ActivityThread.java:5292)  
                      at java.lang.reflect.Method.invoke(Native Method)  
                      at java.lang.reflect.Method.invoke(Method.java:372)  
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)  
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)  
                     Caused by: android.os.BadParcelableException: ClassNotFoundException when unmarshalling: android.support.v7.widget.Toolbar$SavedState 
                      at android.os.Parcel.readParcelableCreator(Parcel.java:2289) 
                      at android.os.Parcel.readParcelable(Parcel.java:2239) 
                      at android.os.Parcel.readValue(Parcel.java:2146) 
                      at android.os.Parcel.readSparseArrayInternal(Parcel.java:2540) 
                      at android.os.Parcel.readSparseArray(Parcel.java:1868) 
                      at android.os.Parcel.readValue(Parcel.java:2203) 
                      at android.os.Parcel.readArrayMapInternal(Parcel.java:2479) 
                      at android.os.BaseBundle.unparcel(BaseBundle.java:221) 
                      at android.os.Bundle.getBundle(Bundle.java:782) 
                      at com.google.android.gms.maps.internal.ao.a(:com.google.android.gms.alldynamite:74) 
                      at maps.ei.bu.a(Unknown Source) 
                      at maps.ei.n.a(Unknown Source) 
                      at com.google.android.gms.maps.internal.i$a.onTransact(:com.google.android.gms.alldynamite:107) 
                      at android.os.Binder.transact(Binder.java:380) 
                      at com.google.android.gms.maps.internal.IMapFragmentDelegate$zza$zza.onCreateView(Unknown Source) 
                      at com.google.android.gms.maps.SupportMapFragment$zza.onCreateView(Unknown Source) 
                      at com.google.android.gms.dynamic.zza$4.zzb(Unknown Source) 
                      at com.google.android.gms.dynamic.zza.zza(Unknown Source) 
                      at com.google.android.gms.dynamic.zza.onCreateView(Unknown Source) 
                      at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source) 
                      at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
                      at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1036) 
                      at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1230) 
                      at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2315) 
                      at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120) 
                      at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:357) 
                      at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31) 
                      at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:80) 
                     at android.view.LayoutInf 

我MainActivity.java是

package com.licenta.vladut.mmap; 

import android.Manifest; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.support.v4.app.ActivityCompat; 
import android.support.v4.app.Fragment; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.support.v7.widget.Toolbar; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.Toast; 

import com.google.android.gms.appindexing.AppIndex; 
import com.google.android.gms.auth.api.Auth; 
import com.google.android.gms.auth.api.signin.GoogleSignInOptions; 
import com.google.android.gms.common.ConnectionResult; 
import com.google.android.gms.common.GoogleApiAvailability; 

import com.google.android.gms.common.api.GoogleApiClient; 
import com.google.android.gms.common.api.ResultCallback; 
import com.google.android.gms.common.api.Status; 
import com.google.android.gms.maps.CameraUpdate; 
import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.OnMapReadyCallback; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.LatLng; 

public class MainActivity extends AppCompatActivity implements GoogleApiClient.OnConnectionFailedListener, OnMapReadyCallback { 
    GoogleMap mMap; 
    private static final double BM_LAT = 47.6595076, BM_LNG = 23.5631243; 
    private Toolbar toolbar; 
    private GoogleApiClient mGoogleApiClient; 
    private static final String TAG = "SignInActivity"; 
    private static final int ERROR_DIALOG_REQUEST = 9001; 
    private static final int RC_SIGN_IN = 9002; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 


     GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN) 
       .requestEmail() 
       .build(); 
     mGoogleApiClient = new GoogleApiClient.Builder(this) 
       .enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */) 
       .addApi(Auth.GOOGLE_SIGN_IN_API, gso) 
       .addApi(AppIndex.API).build(); 
     if (checkPlayServices()) { 
      setContentView(R.layout.activity_map); 
      Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
      (MainActivity.this).setSupportActionBar(toolbar); 
      SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); 
      mapFragment.getMapAsync(this); 
     } else { 
      setContentView(R.layout.activity_main); 

     } 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     //noinspection SimplifiableIfStatement 
     if (id == R.id.sign_out) { 
      signOut(); 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 

    private void signOut() { 
     Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(
       new ResultCallback<Status>() { 
        @Override 
        public void onResult(Status status) { 
         toSignIn(); 
        } 


       }); 
    } 

    private void toSignIn() { 
     Intent i = new Intent(this, SignInActivity.class); 
     startActivity(i); 
    } 


    @Override 
    public void onConnectionFailed(ConnectionResult connectionResult) { 
     // An unresolvable error has occurred and Google APIs (including Sign-In) will not 
     // be available. 
     Log.d(TAG, getString(R.string.onConnectionFailed) + connectionResult); 
    } 

    private boolean checkPlayServices() { 
     GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance(); 
     int result = googleAPI.isGooglePlayServicesAvailable(this); 
     if (result != ConnectionResult.SUCCESS) { 
      if (googleAPI.isUserResolvableError(result)) { 
       googleAPI.getErrorDialog(this, result, 
         ERROR_DIALOG_REQUEST).show(); 
      } else { 
       Toast.makeText(this, "Nu se poate conecta la Google Play Services!", Toast.LENGTH_SHORT).show(); 
      } 

      return false; 
     } 

     return true; 
    } 


    @Override 
    public void onMapReady(final GoogleMap map) { 
     this.mMap = map; 
     gotoLocation(BM_LAT,BM_LNG,18); 
    } 
    private void gotoLocation(double lat, double lng, float zoom){ 
     LatLng latLng = new LatLng(lat, lng); 
     CameraUpdate update = CameraUpdateFactory.newLatLngZoom(latLng,zoom); 
     mMap.moveCamera(update); 
    } 
} 

activity_main.xml中被

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    tools:context="com.licenta.vladut.mmap.MainActivity"> 
    <include 
     android:id="@+id/toolbar" 
     layout="@layout/toolbar" 
     /> 
</RelativeLayout> 

activity_map.xml是

<?xml version="1.0" encoding="utf-8"?> 
<fragment xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:map="http://schemas.android.com/apk/res-auto" 
    android:id="@+id/map" 
    android:name="com.google.android.gms.maps.SupportMapFragment" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
    <include 
     android:id="@+id/toolbar" 
     layout="@layout/toolbar" 
     /> 
    </fragment> 

最後，toolbar.xml是

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v7.widget.Toolbar 
    android:background="?attr/colorPrimary" 
    android:id="@+id/toolbar" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:minHeight="?attr/actionBarSize" 
    android:layout_width="match_parent" 
    android:layout_alignParentStart="true" 
    android:elevation="4dp" 
    app:popupTheme="@style/AppTheme.PopupOverlay" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 
</android.support.v7.widget.Toolbar> 

Answer 1

旋轉後，您的SupportMapFragment被破壞並重新創建。在它被銷燬之前，它將其當前狀態寫入Parcel，用於在重新創建時恢復其狀態。 Fragment的已保存狀態將包括其子View的狀態，並且由於您已在其中嵌套了Toolbar，因此它也會嘗試保存並恢復該狀態。 Toolbar類沒有爲此所需的內部類SavedState，因此嘗試從Parcel恢復Toolbar實例時此過程失敗。

解決的辦法是不要將Toolbar或任何其他View嵌套在<fragment>元素中。相反，將<include>拉出<fragment>，並將它們放入另一個ViewGroup;例如，垂直LinearLayout或RelativeLayout。

Answer 2

將activity_map.xml更改爲此效果，再次感謝Mike。

<?xml version="1.0" encoding="utf-8" ?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <include 
     android:id="@+id/toolbar" 
     layout="@layout/toolbar" /> 

    <fragment xmlns:map="http://schemas.android.com/apk/res-auto" 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.SupportMapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"> 

    </fragment> 
</RelativeLayout> 

Answer 3

我不喜歡提供的解決方案，因爲它強加在我的佈局和體系結構上。

這是我做的工作。如果你看看你的堆棧跟蹤，ClassNotFoundException來自GoogleMaps上的行。所以如果我們只是解決這個問題，問題就沒有了。

GoogleMaps pukes /在saveInstanceState除此之外還有其他項目時拋出一個錯誤。解決方案是給GoogleMaps自己的專用包。

// class property 
private static final String KEY_MAP_SAVED_STATE = "mapState"; 

// class methods 
@Override 
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 
    mapView = findMapView(); // make your own method here 
    Bundle mapState = (savedInstanceState != null) 
      ? savedInstanceState.getBundle(KEY_MAP_SAVED_STATE): null; 
    mapView.onCreate(mapState); 
} 

@Override 
public void onSaveInstanceState(Bundle outState) { 
    super.onSaveInstanceState(outState); 
    Bundle mapState = new Bundle(); 
    mapView.onSaveInstanceState(mapState); 
    outState.putBundle(KEY_MAP_SAVED_STATE, mapState); 
} 

有一點需要注意的是我沒有使用SupportMapFragment。我直接使用MapView。您可能需要擴展SupportMapFragment，以便您可以捕獲鉤子方法並提供一個空白/清理捆綁包