更新應用程序領域遷移問題

我做了一些migrationrealm在Android Studio模擬器上測試並沒有問題，但在production某些設備正在遷移trouble。更新應用程序領域遷移問題

在1版本：

public class Configuration extends Application { 

    @Override 
    public void onCreate() { 
     super.onCreate(); 

     Realm.init(this); 

     RealmConfiguration configuration = new RealmConfiguration.Builder() 
       .name("myapp.realm").schemaVersion(1).build(); 
     Realm.setDefaultConfiguration(configuration); 
    } 
}

在版本2中：

public class Configuration extends Application { 

    @Override 
    public void onCreate() { 
     super.onCreate(); 

     Realm.init(this); 
     RealmConfiguration configuration = new RealmConfiguration.Builder() 
       .name("myapp.realm").schemaVersion(2).migration(new MyMigration()).build(); 
     Realm.setDefaultConfiguration(configuration); 

    } 

    private class MyMigration implements RealmMigration { 
     @Override 
     public void migrate(DynamicRealm realm, long oldVersion, long newVersion) { 
      RealmSchema schema = realm.getSchema(); 

      if (oldVersion == 1) { 
       schema.get(ClassRealm.class.getSimpleName()) 
         .addField(ClassRealm.STRING_FIELD_NAME, String.class); 

       schema.create(AnotherClassRealm.class.getSimpleName()) 
         .addField(AnotherClassRealm.INTEGER_FIELD_NAME, Integer.class, FieldAttribute.PRIMARY_KEY) 
         .addField(AnotherClassRealm.STRING_FIELD1_NAME, String.class, FieldAttribute.REQUIRED) 
         .addField(AnotherClassRealm.STRING_FIELD2_NAME, String.class, FieldAttribute.REQUIRED) 
         .addField(AnotherClassRealm.DATE_FIELD_NAME, Date.class, FieldAttribute.REQUIRED); 
       oldVersion++; 
      } 

     } 
    } 
}

升級到新的版本錯誤後：

裝置：銀河J5（j5lte）機器人： 6.0

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415) 
    at android.app.ActivityThread.access$1100(ActivityThread.java:229) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:7325) 
    at java.lang.reflect.Method.invoke(Method.java) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'io.realm.RealmObjectSchema io.realm.RealmObjectSchema.a(java.lang.String, java.lang.Class, io.realm.e[])' on a null object reference 
    at myapp.configuration.Configuration$MyMigration.migrate(Configuration.java) 
    at io.realm.BaseRealm$4.onResult(BaseRealm.java) 
    at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java) 
    at <OR>.release(RealmCache.java) 
    at <OR>.validateConfiguration(RealmCache.java) 
    at <OR>.invokeWithGlobalRefCount(RealmCache.java) 
    at <OR>.updateSchemaCache(RealmCache.java) 
    at <OR>.findColumnIndices(RealmCache.java) 
    at <OR>.storeColumnIndices(RealmCache.java) 
    at io.realm.BaseRealm.isInTransaction(BaseRealm.java) 
    at <OR>.setVersion(BaseRealm.java) 
    at <OR>.get(BaseRealm.java) 
    at <OR>.get(BaseRealm.java) 
    at <OR>.get(BaseRealm.java) 
    at <OR>.deleteRealm(BaseRealm.java) 
    at <OR>.migrateRealm(BaseRealm.java) 
    at io.realm.Realm.init(Realm.java) 
    at <OR>.createInstance(Realm.java) 
    at <OR>.initializeRealm(Realm.java) 
    at <OR>.createObject(Realm.java) 
    at <OR>.createObjectInternal(Realm.java) 
    at <OR>.copyToRealm(Realm.java) 
    at <OR>.copyFromRealm(Realm.java) 
    at <OR>.where(Realm.java) 
    at <OR>.executeTransaction(Realm.java) 
    at <OR>.copyOrUpdate(Realm.java) 
    at <OR>.createDetachedCopy(Realm.java) 
    at <OR>.checkMaxDepth(Realm.java) 
    at <OR>.migrateRealm(Realm.java) 
    at <OR>.updateSchemaCache(Realm.java) 
    at <OR>.isInTransaction(Realm.java) 
    at io.realm.Realm.init(Realm.java) 
    at <OR>.createInstance(Realm.java) 
    at <OR>.initializeRealm(Realm.java) 
    at <OR>.createObject(Realm.java) 
    at <OR>.createObjectInternal(Realm.java) 
    at <OR>.copyToRealm(Realm.java) 
    at <OR>.copyFromRealm(Realm.java) 
    at <OR>.where(Realm.java) 
    at <OR>.executeTransaction(Realm.java) 
    at <OR>.copyOrUpdate(Realm.java) 
    at <OR>.createDetachedCopy(Realm.java) 
    at <OR>.checkMaxDepth(Realm.java) 
    at <OR>.migrateRealm(Realm.java) 
    at <OR>.updateSchemaCache(Realm.java) 
    at <OR>.isInTransaction(Realm.java) 
    at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java) 
    at <OR>.release(RealmCache.java) 
    at <OR>.validateConfiguration(RealmCache.java) 
    at <OR>.invokeWithGlobalRefCount(RealmCache.java) 
    at <OR>.updateSchemaCache(RealmCache.java) 
    at <OR>.findColumnIndices(RealmCache.java) 
    at <OR>.storeColumnIndices(RealmCache.java) 
    at io.realm.Realm.getDefaultInstance(Realm.java) 
    at myapp.MyView.onCreate(MyView.java) 
    at android.app.Activity.performCreate(Activity.java:6904) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415) 
    at android.app.ActivityThread.access$1100(ActivityThread.java:229) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:7325) 
    at java.lang.reflect.Method.invoke(Method.java) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

另：裝置：銀河S3理學（s3ve3gds），機器人：4.4

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2500) 
    at android.app.ActivityThread.access$900(ActivityThread.java:171) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1309) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:146) 
    at android.app.ActivityThread.main(ActivityThread.java:5679) 
    at java.lang.reflect.Method.invokeNative(Method.java) 
    at java.lang.reflect.Method.invoke(Method.java:515) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107) 
    at dalvik.system.NativeStart.main(NativeStart.java) 
Caused by: java.lang.NullPointerException 
    at myapp.configuration.Configuration$MyMigration.migrate(Configuration.java) 
    at io.realm.BaseRealm$4.onResult(BaseRealm.java) 
    at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java) 
    at <OR>.release(RealmCache.java) 
    at <OR>.validateConfiguration(RealmCache.java) 
    at <OR>.invokeWithGlobalRefCount(RealmCache.java) 
    at <OR>.updateSchemaCache(RealmCache.java) 
    at <OR>.findColumnIndices(RealmCache.java) 
    at <OR>.storeColumnIndices(RealmCache.java) 
    at io.realm.BaseRealm.isInTransaction(BaseRealm.java) 
    at <OR>.setVersion(BaseRealm.java) 
    at <OR>.get(BaseRealm.java) 
    at <OR>.get(BaseRealm.java) 
    at <OR>.get(BaseRealm.java) 
    at <OR>.deleteRealm(BaseRealm.java) 
    at <OR>.migrateRealm(BaseRealm.java) 
    at io.realm.Realm.init(Realm.java) 
    at <OR>.createInstance(Realm.java) 
    at <OR>.initializeRealm(Realm.java) 
    at <OR>.createObject(Realm.java) 
    at <OR>.createObjectInternal(Realm.java) 
    at <OR>.copyToRealm(Realm.java) 
    at <OR>.copyFromRealm(Realm.java) 
    at <OR>.where(Realm.java) 
    at <OR>.executeTransaction(Realm.java) 
    at <OR>.copyOrUpdate(Realm.java) 
    at <OR>.createDetachedCopy(Realm.java) 
    at <OR>.checkMaxDepth(Realm.java) 
    at <OR>.migrateRealm(Realm.java) 
    at <OR>.updateSchemaCache(Realm.java) 
    at <OR>.isInTransaction(Realm.java) 
    at io.realm.Realm.init(Realm.java) 
    at <OR>.createInstance(Realm.java) 
    at <OR>.initializeRealm(Realm.java) 
    at <OR>.createObject(Realm.java) 
    at <OR>.createObjectInternal(Realm.java) 
    at <OR>.copyToRealm(Realm.java) 
    at <OR>.copyFromRealm(Realm.java) 
    at <OR>.where(Realm.java) 
    at <OR>.executeTransaction(Realm.java) 
    at <OR>.copyOrUpdate(Realm.java) 
    at <OR>.createDetachedCopy(Realm.java) 
    at <OR>.checkMaxDepth(Realm.java) 
    at <OR>.migrateRealm(Realm.java) 
    at <OR>.updateSchemaCache(Realm.java) 
    at <OR>.isInTransaction(Realm.java) 
    at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java) 
    at <OR>.release(RealmCache.java) 
    at <OR>.validateConfiguration(RealmCache.java) 
    at <OR>.invokeWithGlobalRefCount(RealmCache.java) 
    at <OR>.updateSchemaCache(RealmCache.java) 
    at <OR>.findColumnIndices(RealmCache.java) 
    at <OR>.storeColumnIndices(RealmCache.java) 
    at io.realm.Realm.getDefaultInstance(Realm.java) 
    at myapp.MyView.onCreate(MyView.java) 
    at android.app.Activity.performCreate(Activity.java:5582) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2405) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2500) 
    at android.app.ActivityThread.access$900(ActivityThread.java:171) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1309) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:146) 
    at android.app.ActivityThread.main(ActivityThread.java:5679) 
    at java.lang.reflect.Method.invokeNative(Method.java) 
    at java.lang.reflect.Method.invoke(Method.java:515) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107) 
    at dalvik.system.NativeStart.main(NativeStart.java)

所有設備：

銀河大理學（baffinlitedtv）
銀河Tab3V 7.0（goyave3gsea）
銀河S7邊緣（hero2lte）
銀河J5（2016）（j5xnlte）
摩托G（4）P桿菌屬（athene_f）
銀河J1贈送（j1mini3g）
銀河WIN2（coreprimeltedtv）
聯想K5（A6020l36）
Moto G的Turbo版（梅林）
摩托G4播放（harpia_t）
銀河S3理學（s3ve3gds）
STUDIO_SELFIE
銀河核2（假名）
銀河J2（j2lte）
銀河大總理（fortuna3gdtv）
銀河J3（2016）（j3xlte）

來源

2017-04-03 k4k4sh1

請您分享完整的堆棧跟蹤？ – beeender

和遷移失敗的設備？ – EpicPandaForce

我使用所需的更改進行了編輯。 – k4k4sh1

當您使用ProGuard的，模型類混淆。這意味着ClassRealm.class.getSimpleName()不會返回"ClassRealm"。

這是一個預期的行爲。

當然，您可以通過添加自己的proguard配置來保留模型類的名稱。

來源

2017-04-07 05:25:17 zaki50

沒錯，它非常有意義，謝謝大家！ – k4k4sh1

更新應用程序領域遷移問題

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