CODEWITHSUNDEEP
androiddatabasesqliteoncreate
Abhishek Aggarwal
Abhishek Aggarwal

Reputation: 207

Initializing a SQLite database

DatabaseHelper class's onCreate method is called when db.getWritableDatabase() or db.getReadableDatabase() is called. So, whenever use the dbhelper for the first time, onCreate will be called at that time.
I want my database to be called whenever the app is started for the first time instead of first use of dbhelper.

Upvotes: 0

Views: 1035

Answers (2)

Shiva Snape
Shiva Snape

Reputation: 544

Initialize your Db Class in applicaion Class ....

public class AppController extends Application {

    private static AppController mInstance;
    private DatabaseManager databaseManager;

    @Override
    public void onCreate() {
        super.onCreate();
        mInstance = this;

        databaseManager = new DataBaseManger(mInstance);


    }

    public static synchronized AppController getInstance() {
        return mInstance;
    }

}

Declare the Application Class in Android Manifest...

<application
        android:name=".app.AppController"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

     ---------------------------------------
     ----------------------------------------
   -------------------------------------------

   </application>

Upvotes: 1

Abu Yousuf
Abu Yousuf

Reputation: 6107

I want my database to be called whenever the app is started for the first time instead of first use of dbhelper.

Create a Custom Application class and Initialize your database in Application's onCreate() method. This will ensure your database will be initialized before any Activity launch. Because Application class run before any Activity launch. 

public class MyApplication extends Application {
  public void onCreate() {
    super.onCreate();
    // Initialize your Database here 

  }
}

Define you Application Class in AndroidManifest.xml

    <application
    android:name="com.example.MyApplication"
    android:icon="@drawable/icon"
    android:label="@string/app_name"
    android:theme="@style/BaseTheme">
    ...................
    ...................
     </application>

Upvotes: 0

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