SQLiteAssetHelper: Could not open database for writing (try read only)

Question

SQLiteAssetHelper: Could not open database for writing (try read only)

This question has already been asked by people, but having walked the steps from many of them, I still can’t fix the problem at my end. My application works fine on an emulator, but not on a real device, and gives the following 2 exceptions, the first exception is the main source of the second exception, and I assume that there is some resolution issue. I added

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

to the manifest file, but I got the same result. My database is very simple with one table. I also added the table "android_metadata" and edited another field of the table identifier "_id". and I'm sure that my database is present in the resource folder.

Any help would be appreciated.

first exception

02-24 12:58:10.067: E/SQLiteAssetHelper(7107): Couldn't open Shajra for writing (will try read-only):
02-24 12:58:10.067: E/SQLiteAssetHelper(7107): com.readystatesoftware.sqliteasset.SQLiteAssetHelper$SQLiteAssetException: Missing databases/Shajra file (or .zip, .gz archive) in assets, or target folder not writable
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.content.res.AssetManager.openAsset(Native Method)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.content.res.AssetManager.open(AssetManager.java:325)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.content.res.AssetManager.open(AssetManager.java:299)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.readystatesoftware.sqliteasset.SQLiteAssetHelper.copyDatabaseFromAssets(SQLiteAssetHelper.java:436)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.readystatesoftware.sqliteasset.SQLiteAssetHelper.createOrOpenDatabase(SQLiteAssetHelper.java:400)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.readystatesoftware.sqliteasset.SQLiteAssetHelper.getWritableDatabase(SQLiteAssetHelper.java:176)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.readystatesoftware.sqliteasset.SQLiteAssetHelper.getReadableDatabase(SQLiteAssetHelper.java:254)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.nannandotcom.MainActivity.onCreate(MainActivity.java:27)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1836)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1893)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.app.ActivityThread.access$1500(ActivityThread.java:135)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1054)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.os.Handler.dispatchMessage(Handler.java:99)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.os.Looper.loop(Looper.java:150)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at android.app.ActivityThread.main(ActivityThread.java:4389)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at java.lang.reflect.Method.invokeNative(Native Method)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at java.lang.reflect.Method.invoke(Method.java:507)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
02-24 12:58:10.067: E/SQLiteAssetHelper(7107):  at dalvik.system.NativeStart.main(Native Method)

second exception

02-24 12:58:10.077: E/Database(7107): dbopen(): sqlite3_open_v2("/data/data/com.example.nannandotcom/databases/Shajra", &handle, 1, NULL) failed
02-24 12:58:10.077: E/Database(7107): dbopen(): errno = 2, error message = No such file or directory
02-24 12:58:10.077: D/AndroidRuntime(7107): Shutting down VM
02-24 12:58:10.077: W/dalvikvm(7107): threadid=1: thread exiting with uncaught exception (group=0x4011f5a0)
02-24 12:58:10.108: E/AndroidRuntime(7107): FATAL EXCEPTION: main
02-24 12:58:10.108: E/AndroidRuntime(7107): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.nannandotcom/com.nannandotcom.MainActivity}: android.database.sqlite.SQLiteException: unable to open database file
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1872)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1893)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.ActivityThread.access$1500(ActivityThread.java:135)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1054)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.os.Handler.dispatchMessage(Handler.java:99)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.os.Looper.loop(Looper.java:150)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.ActivityThread.main(ActivityThread.java:4389)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at java.lang.reflect.Method.invokeNative(Native Method)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at java.lang.reflect.Method.invoke(Method.java:507)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at dalvik.system.NativeStart.main(Native Method)
02-24 12:58:10.108: E/AndroidRuntime(7107): Caused by: android.database.sqlite.SQLiteException: unable to open database file
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.database.sqlite.SQLiteDatabase.dbopen(Native Method)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1962)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:906)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at com.readystatesoftware.sqliteasset.SQLiteAssetHelper.getReadableDatabase(SQLiteAssetHelper.java:264)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at com.nannandotcom.MainActivity.onCreate(MainActivity.java:27)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072)
02-24 12:58:10.108: E/AndroidRuntime(7107):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1836)
02-24 12:58:10.108: E/AndroidRuntime(7107):     ... 11 more

DatabaseHelper

package com.nannandotcom;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

import com.nannandotcom.model.ProfileBean;
import com.readystatesoftware.sqliteasset.SQLiteAssetHelper;

public class DatabaseHelper extends SQLiteAssetHelper {

    private static final String DATABASE_NAME = "Shajra";
    private static final int DATABASE_VERSION = 1;

    private Context context;

    public DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        this.context = context;
    }

    public void copyDatabase() throws IOException{
    //  SQLiteDatabase checkDB = SQLiteDatabase.openDatabase(context.getAssets().+(DATABASE_NAME), null, SQLiteDatabase.OPEN_READONLY);
    //  checkDB.close();
    InputStream myInput = context.getAssets().open(DATABASE_NAME);      
    String outFileName =  "/data/data/"+ context.getPackageName() + "/databases/" + DATABASE_NAME;     
    OutputStream myOutput = new FileOutputStream(outFileName);

    byte[] buffer = new byte[1024];
    int length;
    while ((length = myInput.read(buffer))>0){
        myOutput.write(buffer, 0, length);
    }

    myOutput.flush();
    myOutput.close();
    myInput.close();
    }

    public ProfileBean getProfileBean(SQLiteDatabase database,int id){
        ProfileBean profileBean = new ProfileBean();
        try {
            Cursor c = database.query("Profiles",
                    new String[]{"_id","Name","Qualification","WorkingAt","LivesAt","MaritalStatus","NumberOfChildren",
                    "Telephone","Email","Picture","MarriedTo","Father","Mother","DOB","Gender"},
                    "_id=?",
                    new String[]{Integer.toString(id)},null, null, null);
            if (c != null ) {
                if  (c.moveToFirst()) {
                    do {

                    }while (c.moveToNext());
                } 
            }   
        }
        catch(Exception e){
            e.printStackTrace();
        }
        return profileBean;
    }
}

MainActivity

package com.nannandotcom;

import java.io.IOException;
import com.example.nannandotcom.R;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        DatabaseHelper databaseHelper = new DatabaseHelper(this);
        SQLiteDatabase database = databaseHelper.getReadableDatabase();

        try {
            databaseHelper.copyDatabase();
    }   
        }catch(SQLException sqle){

            throw sqle;

        }
        }
        catch(Exception e){
            Log.e("MainActivity", e.getMessage());
            e.printStackTrace();
        }

        final EditText enterName = (EditText) findViewById(R.id.editText1);
        Button submit = (Button) findViewById(R.id.button1);
        submit.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent mainActivityIntent = new   Intent(MainActivity.this, Welcome.class);
                mainActivityIntent.putExtra("userName", enterName.getText().toString());
                startActivity(mainActivityIntent);
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

+4

java android android-sqlite

SSH 24 . '14 8:22

7

, :

"assets" Android Studio, : → → →

+3

Mark KWH 07 . '15 18:09

Android Studio DATABASE_NAME, ...

db assets/databases.

private static final String DATABASE_NAME = "databases/mydb.db";

private static final String DATABASE_NAME = "mydb.db";

+2

the_prole 28 . '16 19:45

SQLiteHelper SQLiteOpenHelper, , SQLiteHelper (, ). dbHelper.getWritableDatabase();, . , .

private SQLiteDatabase database;
private SQLiteHelper dbHelper;

public CallHistoryDataSource(Context context) {
    dbHelper = new SQLiteHelper(context);
}

private void open() throws SQLException {
    database = dbHelper.getWritableDatabase();
}

private void close() {
    dbHelper.close();
}

+1

axierjhtjz 24 . '14 8:46

, , , !

, ,

private static final String DATABASE_NAME = "mydata.db";
    private static final int DATABASE_VERSION = 1;

    public DatabaseOpenHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

+1

Marjan Dn 21 '17 19:10

db SD-, .

String outFileName =  Environment.getExternalStorageDirectory() + "/databases/" + DATABASE_NAME;

, , databaseHelper.getReadableDatabase();, , databaseHelper.getWritableDatabase();

0

Rakhita 24 . '14 9:04

,

1:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

2:

if (ContextCompat.checkSelfPermission(MainActivity.this,
                Manifest.permission.READ_CONTACTS)
                != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                    101);
        }else {
            db=new DbUtils(MainActivity.this);
        }

3: " ",

private static final String DATABASE_NAME = "thirukkural.db";

( )

thirukkural

NewFile Name thirukkural.db

:

0

RAJESH KUMAR ARUMUGAM 07 . '17 10:20

Chirag Ghori · Accepted Answer · 2014-02-24T08:45:01+0000

, db DATABASE_NAME.

DATABASE_NAME .

private static final String DATABASE_NAME = "Shajra";

private static final String DATABASE_NAME = "Shajra.db";

private static final String DATABASE_NAME = "Shajra.sqlite";

SQLiteAssetHelper: Could not open database for writing (try read only)

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