Android Studio how to retrieve data from Sqlite database and display it into textview

0 votes

I built a SQLite Database and added the data to it in my app. And right now I want to get data out of it, but I only want to insert one data, get it, get it back, and then display it in a TextView.

public class Db_sqlit extends SQLiteOpenHelper{

    String TABLE_NAME = "BallsTable";

    public final static String name = "db_data";

    public Db_sqlit(Context context) {
        super(context, name, null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table "+TABLE_NAME+" (id INTEGER PRIMARY KEY AUTOINCREMENT, ball TEXT)");

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS "+TABLE_NAME);
        onCreate(db);
    }

    public boolean insertData(String balls){
      SQLiteDatabase db = this.getWritableDatabase();
      ContentValues contentValues = new ContentValues();

      contentValues.put("ball",balls);

      long result = db.insert(TABLE_NAME,null,contentValues);
      if(result == -1){
          return false;
      }
      else
          return true;
    }

    public void list_balls(TextView textView) {

        Cursor res = this.getReadableDatabase().rawQuery("select ball from "+TABLE_NAME+"",null);
        textView.setText("");
        while (res.moveToNext()){
            textView.append(res.getString(1));
        }  
    }
}

Can someone please help me with this?

Sep 2, 2022 in Database by Kithuzzz
• 38,010 points
1,189 views

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