greendao数据库加密

添加依赖

 // This is only needed if you want to use encrypted databases
    compile 'net.zetetic:android-database-sqlcipher:3.5.6'

连接加密数据库

	mHelper = new MySQLiteOpenHelper(this, "test2-db", null);
//		db = mHelper.getWritableDatabase();
		Database db2 = mHelper.getEncryptedReadableDb("1232132");

  Process: com.example.green.greendaotest2, PID: 20402
    java.lang.RuntimeException: Unable to create application com.example.green.greendaotest2.app.App: net.sqlcipher.database.SQLiteException: file is encrypted or is not a database: , while compiling: select count(*) from sqlite_master;
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4920)
        at android.app.ActivityThread.-wrap1(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1529)
        at android.os.Handler.dispatchMessage(Handler.java:111)
        at android.os.Looper.loop(Looper.java:207)
        at android.app.ActivityThread.main(ActivityThread.java:5689)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:906)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
     Caused by: net.sqlcipher.database.SQLiteException: file is encrypted or is not a database: , while compiling: select count(*) from sqlite_master;
        at net.sqlcipher.database.SQLiteCompiledSql.native_compile(Native Method)
        at net.sqlcipher.database.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91)
        at net.sqlcipher.database.SQLiteCompiledSql.(SQLiteCompiledSql.java:64)
        at net.sqlcipher.database.SQLiteProgram.(SQLiteProgram.java:84)
        at net.sqlcipher.database.SQLiteQuery.(SQLiteQuery.java:49)
        at net.sqlcipher.database.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42)
        at net.sqlcipher.database.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1820)
        at net.sqlcipher.database.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1785)
        at net.sqlcipher.database.SQLiteDatabase.keyDatabase(SQLiteDatabase.java:2439)
        at net.sqlcipher.database.SQLiteDatabase.openDatabaseInternal(SQLiteDatabase.java:2368)
        at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1149)
        at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1041)
        at net.sqlcipher.database.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:249)
        at net.sqlcipher.database.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:214)
        at org.greenrobot.greendao.database.DatabaseOpenHelper.getEncryptedReadableDb(DatabaseOpenHelper.java:155)

数据库已经被创建了并且不是加密的需要删除原数据库或更改数据库名字