Hey everyone,
I'm trying to get started with SQLite. My app keeps force closing on this activity:
public class ViewActivity extends Activity {
private TextView company;
private BillMeDB dh;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.all);
company = (TextView) findViewById(R.id.Company1);
BillMeDB db = new BillMeDB(this);
db.open();
long id;
id = db.insertEntry("Power", "AEP", "item", "2010.9.15", "w2", "2010.9.24", "2011.1.1", 75.77);
id = db.insertEntry("Cell Phone", "Verizon", "item", "2010.9.15", "w2", "2010.9.24", "2011.1.1", 185.45);
Cursor c = db.getEntry(1);
if (c.moveToFirst())
company.setText(c.getString(1));
db.close();
// Cursor c = BillMeLoad.database.fetchAllEntries();
company.setText(this.dh.getEntry(0).toString());
}
}I can't figure out why though. It blows up(I think) when it starts creating a DB. Here's my DB file - I have no idea where I've gone wrong, but apparently something isn't right. Can someone give me a hand?
My DB File:
package com.caleb.billme;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class BillMeDB {
public static final String KEY_BILLNAME = "billname";
public static final String KEY_COMPANY = "company";
public static final String KEY_ROWID = "_id";
public static final String KEY_ITEM = "item";
public static final String KEY_DUEDATE = "duedate";
public static final String KEY_REMFREQ = "remfreq";
public static final String KEY_REMDATE = "remdate";
public static final String KEY_ENDDATE = "enddate";
public static final String KEY_DUEAMNT = "dueamnt";
private static final String TAG = "BillMeDB";
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
private static final String DATABASE_CREATE =
"CREATE TABLE BillTable (_id integer primary key autoincrement, "
+ "billname text not null, company text not null, item text not null, " +
"duedate text not null, remfreq text not null, " +
"remdate text not null, enddate text not null, dueamnt double not null)";
private static final String DATABASE_NAME = "Data";
private static final String DATABASE_TABLE = "BillTable";
private static final int DATABASE_VERSION = 2;
private final Context mCtx;
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(DATABASE_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS BillTable");
onCreate(db);
}
}
public BillMeDB(Context ctx) {
mCtx = ctx;
}
public BillMeDB open() throws SQLException {
db = DBHelper.getWritableDatabase();
return this;
}
public void close() {
DBHelper.close();
}
public long insertEntry(String billname, String company, String item, String duedate, String remfreq, String remdate, String enddate, double dueamnt ) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_BILLNAME, billname);
initialValues.put(KEY_COMPANY, company);
initialValues.put(KEY_ITEM, item);
initialValues.put(KEY_DUEDATE, duedate);
initialValues.put(KEY_REMFREQ, remfreq);
initialValues.put(KEY_REMDATE, remdate);
initialValues.put(KEY_ENDDATE, enddate);
initialValues.put(KEY_DUEAMNT, dueamnt);
return db.insert(DATABASE_TABLE, null, initialValues);
}
public boolean deleteAllEntries() {
return db.delete(DATABASE_TABLE, null, null) > 0;
}
public boolean deleteEntry(long rowId) {
return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}
public Cursor getAllEntries() {
return db.query(DATABASE_TABLE, new String[] {
KEY_ROWID, KEY_BILLNAME,
KEY_COMPANY, KEY_ITEM,
KEY_DUEDATE, KEY_REMFREQ,
KEY_REMDATE, KEY_ENDDATE,
KEY_DUEAMNT},
null, null, null, null, null);
}
public Cursor getEntry(long rowId) throws SQLException{
Cursor c = db.query(DATABASE_TABLE, new String[] {
KEY_ROWID,
KEY_BILLNAME }, KEY_ROWID + "=" + rowId,
null, null, null, null);
if (c != null)
c.moveToFirst();
return c;
}
public boolean updateEntry(long rowId, String billname, String company, String item,
String duedate, String remfreq, String remdate, String enddate, double dueamnt) {
ContentValues args = new ContentValues();
args.put(KEY_BILLNAME, billname);
args.put(KEY_COMPANY, company);
args.put(KEY_ITEM, item);
args.put(KEY_DUEDATE, duedate);
args.put(KEY_REMFREQ, remfreq);
args.put(KEY_REMDATE, remdate);
args.put(KEY_ENDDATE, enddate);
args.put(KEY_DUEAMNT, dueamnt);
return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}
}