简体   繁体   中英

Altering db file is causing SQLiteDatabase.openDatabase() to crash

I have a normal opening of a database file, it works perfectly fine when opening a blank db file with only the metadata table, but as soon as I make another table, it causes the app to crash. Maybe it's different version db files? Please comment if you need more of the code

private static String DB_PATH = "/data/data/com.example.andrew.ubair4/databases/";    
private static String DB_NAME = "coordinates";
String myPath = DB_PATH + DB_NAME;

private SQLiteDatabase db;
public DataBaseHelper(Context context){

    super(context, DB_NAME, null, 1);
    this.myContext = context;
    Log.d("TAGG","enter constructor");

    db = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);      //<---- crashes right here IF I have a second table in the database
    Log.d("TAGG","2");

My metadata table:

CREATE TABLE "android_metadata" ("locale" TEXT DEFAULT 'en_US')
INSERT INTO "android_metadata" VALUES ('en_US')

Add 1 more table:

CREATE TABLE something (
  column1, 
  column2, 
  column3, 
  PRIMARY KEY (column1)
);

Edit: Okay, I have new information. If I so much as take the db file, email it to myself, and replace it back into the original directory. It'll crash. Yes you heard me. I don't even alter the file, I just email the file to myself, delete the original, and replace it with the exact same file. Then it crashes. I'm about to tear my hair out.

As I can see, you are opening the DB in read-only mode. Adding the table - is a modification, and exception thrown shows you that you should open it in write mode before modifying it scheme or adding\\deleting some data.

The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM