Question

I am making an application which involves facebook integration.
I have to store the access token so that it doesnt needs to login again to see the application. But i am not able to store the access token .
The following is the error which i get

08-16 13:57:53.236: ERROR/Database(7964): Error inserting acces_token=177852938929775|8e4aec98e182f7034b497766.3-618306968|YAriJqaRTDz1aIgNHjom_tdBnnw
08-16 13:57:53.236: ERROR/Database(7964): android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed
08-16 13:57:53.236: ERROR/Database(7964):     at android.database.sqlite.SQLiteStatement.native_execute(Native Method)
08-16 13:57:53.236: ERROR/Database(7964):     at android.database.sqlite.SQLiteStatement.execute(SQLiteStatement.java:55)
08-16 13:57:53.236: ERROR/Database(7964):     at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1623)
08-16 13:57:53.236: ERROR/Database(7964):     at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1484)
08-16 13:57:53.236: ERROR/Database(7964):     at org.db.dbHelper.insertRows(dbHelper.java:63)
08-16 13:57:53.236: ERROR/Database(7964):     at org.neighbourhood.neighbourhood.onFacebookConnectorWorking(neighbourhood.java:142)

Code :-

  dbHelper db = new dbHelper(neighbourhood.this);
        db.open();
        ContentValues cv = new ContentValues();
        cv.put("acces_token",   
                  facebookConnector.getFacebook().getAccessToken());
        db.insertRows(cv, "facebook");
        db.close();

Code to inset values in database :-

public class dbHelper {

private final String DATABASE_NAME = "neighbourhood.db";
private final String TAG = "dbHelper";

private static final String DATABASE_CREATE_TABLE_LOGIN = "create table login" +
        " (is_login text not null);";

private static final String DATABASE_CREATE_TABLE_FACEBOOK = "create table "
        + "facebook"
        + " (name text not null,"
        + "first_name text not null," +
        "last_name text not null," +
        "gender text not null," +
        "email text not null," +
        "id text not null," +
        "birthday text not null," +
        "acces_token text not null);";


private SQLiteDatabase myDatabase;
private myDbhelper helper;

public dbHelper(Context context) {
    helper = new myDbhelper(context, DATABASE_NAME, null, 1);
}

/**
 * This method is used to open the database in Writable mode
 * 
 * @return instance of the database
 */
public dbHelper open() {
    try {
        myDatabase = helper.getWritableDatabase();
    } catch (SQLException ex) {
        ex.printStackTrace();
        }
    return this;
}

/**
 * This method is used for closing the database
 */
public void close() {
    myDatabase.close();
}


public long insertRows(ContentValues values, String tableName) {
    long val = myDatabase.insert(tableName, null, values);
    return val;
}

public Cursor getAllValues(String tableName) {
    Cursor myResult;
    myResult = myDatabase.query(tableName, null, null, null, null, null,
            null, null);

    return myResult;
}


private static class myDbhelper extends SQLiteOpenHelper {
    public myDbhelper(Context context, String name, CursorFactory factory,
            int version) {
        super(context, name, factory, version);
    }

    /**
     * this method is called when the database is created first time
     */
    @Override
    public void onCreate(SQLiteDatabase _db) {
        _db.execSQL(DATABASE_CREATE_TABLE_LOGIN);
        _db.execSQL(DATABASE_CREATE_TABLE_FACEBOOK);

    }

    /**
     * this method is called when the database version is changed
     */
    @Override
    public void onUpgrade(SQLiteDatabase _db, int _oldVersion,
            int _newVersion) {
        /*
         * _db.execSQL("DROP TABLE IF EXISTS all_audio");
         * _db.execSQL("DROP TABLE IF EXISTS all_video");
         * _db.execSQL("DROP TABLE IF EXISTS all_playlist");
         */
        _db.execSQL("DROP TABLE IF EXISTS all_playlist_song");
        onCreate(_db);

    }
}

}

Answer 1

Your schema specifies that all fields of your facebook table should be NOT NULL, but you are only inserting the acces_token field which will force the remaining fields to be NULL.

private static final String DATABASE_CREATE_TABLE_FACEBOOK = "create table "
    + "facebook"
    + " (name text not null,"
    + "first_name text not null," +
    "last_name text not null," +
    "gender text not null," +
    "email text not null," +
    "id text not null," +
    "birthday text not null," +
    "acces_token text not null);";

This is why the exception says android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed – your NOT NULL constraints are being violated.

You need to either separate acces_token into a separate table (for instance, a hypothetical “admin” table), relax your constraints on the other fields, or insert an entire row of data instead of just the acces_token.