Insert in SQLite Database android

Question

im new on Android. I have some trouble with the insert statement in the database, when im running the application the values have not been inserted. Please someone can help.

Answer 1

Try to understand this code will help you to understand in better way:

package com.example.lalit.myapplication;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.text.method.HideReturnsTransformationMethod;
import android.util.Log;
import android.widget.Toast;

import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Currency;

/**
 * Created by lalit on 7/30/2015.
 */
public class HotOrNot {

  public final static String KEY_ROWID="_id";
    public final static String KEY_NAME="persion_name";
    public final static String KEY_HOTNESS="persion_hotness";
    public final static String KEY_SUB="OS";

    public final static String DATABASE_NAME="HotOrNotdb";
    public final static String DATABASE_TABLE="peopleTable";
    public final static int DATABASE_VERSION=1;

    public static Dbhelper ourHelper;
    public final Context ourContext;
    public SQLiteDatabase ourDatabase;

    private static final String DATABASE_CREATE = "create table peopleTable(_id integer primary key autoincrement, "
            + "persion_name text not null, persion_hotness text not null);";


    public class Dbhelper extends SQLiteOpenHelper{
         public Dbhelper(Context context)
         {
             super(context,DATABASE_NAME,null,DATABASE_VERSION);
         }

        @Override
        public void onCreate(SQLiteDatabase db) {
            db.execSQL(DATABASE_CREATE);


         /*   db.execSQL("CREATE TABLE" + DATABASE_NAME +"("+
             KEY_ROWID +"INTEGER PRIMARY KEY AUTOINCREMENT,"+
             KEY_NAME  +"TEXT NOT NULL,"+
             KEY_HOTNESS+"TEXT NOT NULL);"*/


             //);




        }

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

        }


    }
    public HotOrNot(Context c)
    {
        ourContext=c;
    }

    public HotOrNot open() throws SQLException
    {
        ourHelper=new Dbhelper(ourContext);
        ourDatabase=ourHelper.getWritableDatabase();
        return this;
    }
   public void close()
   {
        ourHelper.close();
   }
 public long createEntry(String name,String hotness)
 {
     ourDatabase.execSQL("INSERT INTO peopleTable (persion_name,persion_hotness) VALUES('Lalit','Kushwah')");
     ContentValues cv=new ContentValues();
      cv.put(KEY_NAME,name);
      cv.put(KEY_HOTNESS,hotness);

      return ourDatabase.insert(DATABASE_TABLE,null,cv);

 }
    public String getData()
    {
        String[] col=new String[]{KEY_ROWID,KEY_NAME,KEY_HOTNESS};
        Cursor c=ourDatabase.query(DATABASE_TABLE,col,null,null,null,null,null);
        String result="";
        int irow=c.getColumnIndex(KEY_ROWID);
        int iname=c.getColumnIndex(KEY_NAME);
        int ihot=c.getColumnIndex(KEY_HOTNESS);

        for(c.moveToFirst();!c.isAfterLast();c.moveToNext())
        {
           result=result+c.getString(irow)+"  "+c.getString(iname)+"  "+c.getString(ihot)+ "\n";

        }



        return result;
    }
}