android - SQLiteOpenHelper#onUpgrade() - is newVersion alwyays the newest version? -

March 15, 2011

Database Helper with my advanced idea:

  Public class databaseHelper SQLiteOpenHelper Extended {Private Static Final}

  switch  without   switch  s The database schema will be updated to step-by-step up to the latest version, it does not matter what was in the first version of the user. If the  old version  is  8 , upgrade methods  upgradeToNinth (db) ,  upgradeToTenth (DB)  and  UpgradeToEleventh (db)  will be run. Great! But this code makes a perception that the value of  newVersion  is always the latest version of the database (the value given to the  SQLiteOpenHelper  manufacturer)). Is this goodbye true?

     
 
 
 
 
   But this code makes a perception that the value of the new version is always the latest version of the database (the value given for the SQLiteOpenHelper constructor). Is this all true? 
 
  yes. 
  It can be verified by reading that  onUpgrade ()  is the  newverions  logic in the same way as the  SQLiteOpenHelper  Pass the logic of the constructor. 
 
  
 


  
















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android - SQLiteOpenHelper#onUpgrade() - is newVersion alwyays the newest version? -

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