问题
I am trying to pass some values that i get from inside database(that extends sqliteOpenHelper) to another class. However i am using a cursor to get the data from that database which giving null values to other activities.
Here is my Database: it has default values inside it , inserted
public class DatabaseMaster extends SQLiteOpenHelper {
SQLiteDatabase db;
private static final String LOG = "DatabaseHelper";
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "Rates";
// Table Names
public static final String KEY_ER_ID = "er_id";
public static final String KEY_ER_USEDORNEW = "Used_or_New";
public static final String KEY_ER_TENOR = "ER_tenor";
public static final String KEY_ER_RATE = "ER_rate";
// Asuransi rate
public static final String KEY_AS_ID = "as_id";
public static final String KEY_AS_REGIONAL = "regional";
public static final String KEY_AS_TENOR = "AS_tenor";
public static final String KEY_AS_TLO = "TLO";
public static final String KEY_AS_COMPREHENSIVE = "Comprehensive";
public static final String KEY_AS_COMBINE = "Combine";
public static final String TABLE_EFFECTIVE_RATE = "effective_rate";
public static final String TABLE_ASURANSI_RATE = "asuransi_rate";
public DatabaseMaster(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
try {
db.beginTransaction();
db.execSQL("CREATE TABLE " + TABLE_EFFECTIVE_RATE + " ("
+ KEY_ER_ID + " INTEGER PRIMARY KEY, " + KEY_ER_USEDORNEW
+ " TEXT NOT NULL, " + KEY_ER_TENOR + " INTEGER,"
+ KEY_ER_RATE + " REAL)");
db.execSQL("CREATE TABLE " + TABLE_ASURANSI_RATE + " (" + KEY_AS_ID
+ " INTEGER PRIMARY KEY, " + KEY_AS_REGIONAL + " INTEGER, "
+ KEY_AS_TENOR + " INTEGER," + KEY_AS_TLO + " REAL,"
+ KEY_AS_COMPREHENSIVE + " REAL," + KEY_AS_COMBINE
+ " REAL)");
// Inserts pre-defined departments
InsertERs(db);
insertASs(db);
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS " + TABLE_EFFECTIVE_RATE);
db.execSQL("DROP TABLE IF EXISTS " + TABLE_ASURANSI_RATE);
// db.execSQL("DROP TRIGGER IF EXISTS er_id_trigger");
// db.execSQL("DROP TRIGGER IF EXISTS er_id_trigger22");
// db.execSQL("DROP TRIGGER IF EXISTS as_id_trigger");
// db.execSQL("DROP TRIGGER IF EXISTS as_id_trigger22");
onCreate(db);
}
void AddERrate(EntryEffectiveRate EER) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues valuesER = new ContentValues();
valuesER.put(KEY_ER_ID, EER.getERId());
valuesER.put(KEY_ER_USEDORNEW, EER.getERKondisi());
valuesER.put(KEY_ER_TENOR, EER.getERTenor());
valuesER.put(KEY_ER_RATE, EER.getERrate());
// values.put(KEY_CREATED_AT, getDateTime());
// insert row
// long er_id =
db.insert(TABLE_EFFECTIVE_RATE, null, valuesER);
// db.close();
// return er_id;
}
int getERCount() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor cur = db.rawQuery("Select * from " + TABLE_EFFECTIVE_RATE, null);
int x = cur.getCount();
cur.close();
return x;
}
Cursor getAllERates() {
SQLiteDatabase db = this.getWritableDatabase();
// Cursor cur=
// db.rawQuery("Select "+colID+" as _id , "+colName+", "+colAge+" from "+employeeTable,
// new String [] {});
// Cursor cur= db.rawQuery("SELECT * FROM "+viewEmps,null);
Cursor cur = db.rawQuery("Select " + KEY_ER_ID + " as _id, "
+ KEY_ER_USEDORNEW + ", " + KEY_ER_TENOR + ", " + KEY_ER_RATE
+ ", " + " from " + TABLE_EFFECTIVE_RATE, new String[] {});
cur.close();
return cur;
}
public List<EntryEffectiveRate> getAllEffectiveRates() {
List<EntryEffectiveRate> EffectiveRates = new ArrayList<EntryEffectiveRate>();
String selectQuery = "SELECT * FROM " + TABLE_EFFECTIVE_RATE;
Log.e(LOG, selectQuery);
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (c.moveToFirst()) {
do {
EntryEffectiveRate ergt = new EntryEffectiveRate();
ergt.setERId(c.getInt(c.getColumnIndex(KEY_ER_ID)));
ergt.setERKondisi(c.getString(c
.getColumnIndex(KEY_ER_USEDORNEW)));
ergt.setERTenor(c.getInt(c.getColumnIndex(KEY_ER_TENOR)));
ergt.setERRate(c.getDouble(c.getColumnIndex(KEY_ER_RATE)));
// add
EffectiveRates.add(ergt);
} while (c.moveToNext());
}
// db.close();
c.close();
return EffectiveRates;
}
public int updateEntryEffectiveRate(EntryEffectiveRate er) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_ER_ID, er.getERId());
values.put(KEY_ER_USEDORNEW, er.getERKondisi());
values.put(KEY_ER_TENOR, er.getERTenor());
values.put(KEY_ER_RATE, er.getERrate());
// values.put(KEY_CREATED_AT, getDateTime());
// updating row
return db.update(TABLE_EFFECTIVE_RATE, values, KEY_ER_ID + " = ?",
new String[] { String.valueOf(er.getERId()) });
}
//
public void deleteEntryEffectiveRate(long er_id) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_EFFECTIVE_RATE, KEY_ER_ID + " = ?",
new String[] { String.valueOf(er_id) });
}
void AddASrate(EntryAsuransiRate EAR) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues valuesAS = new ContentValues();
valuesAS.put(KEY_AS_ID, EAR.getASId());
valuesAS.put(KEY_AS_REGIONAL, EAR.getASzona());
valuesAS.put(KEY_AS_TENOR, EAR.getAStenor());
valuesAS.put(KEY_AS_TLO, EAR.getAStlo());
valuesAS.put(KEY_AS_COMPREHENSIVE, EAR.getAScomp());
valuesAS.put(KEY_AS_COMBINE, EAR.getAScomb());
// values.put(KEY_CREATED_AT, getDateTime());
// insert row
// long er_id =
db.insert(TABLE_ASURANSI_RATE, null, valuesAS);
// db.close();
// return er_id;
}
Cursor getAllASrates() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor cur = db.rawQuery("Select " + KEY_AS_ID + " as _id, "
+ KEY_AS_REGIONAL + ", " + KEY_AS_TENOR + ", " + KEY_AS_TLO
+ ", " + KEY_AS_COMPREHENSIVE + ", " + KEY_AS_COMBINE + ", "
+ " from " + TABLE_ASURANSI_RATE, new String[] {});
cur.close();
return cur;
}
int getASCount() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor cur = db.rawQuery("Select * from " + TABLE_ASURANSI_RATE, null);
int x = cur.getCount();
cur.close();
return x;
}
public List<EntryAsuransiRate> getAllAsuransiRates() {
List<EntryAsuransiRate> AsuransiRates = new ArrayList<EntryAsuransiRate>();
String selectQuery = "SELECT * FROM " + TABLE_ASURANSI_RATE;
Log.e(LOG, selectQuery);
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (c.moveToFirst()) {
do {
EntryAsuransiRate asgt = new EntryAsuransiRate();
asgt.setASId(c.getInt(c.getColumnIndex(KEY_AS_ID)));
asgt.setASzona(c.getInt(c.getColumnIndex(KEY_AS_REGIONAL)));
asgt.setAStenor(c.getInt(c.getColumnIndex(KEY_AS_TENOR)));
asgt.setAStlo(c.getDouble(c.getColumnIndex(KEY_AS_TLO)));
asgt.setAScomp(c.getDouble(c
.getColumnIndex(KEY_AS_COMPREHENSIVE)));
asgt.setAScomb(c.getDouble(c.getColumnIndex(KEY_AS_COMBINE)));
// add
AsuransiRates.add(asgt);
} while (c.moveToNext());
}
// db.close();
c.close();
return AsuransiRates;
}
public int updateEntryAsuransiRate(EntryAsuransiRate EAR) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues valuesAS = new ContentValues();
valuesAS.put(KEY_AS_ID, EAR.getASId());
valuesAS.put(KEY_AS_REGIONAL, EAR.getASzona());
valuesAS.put(KEY_AS_TENOR, EAR.getAStenor());
valuesAS.put(KEY_AS_TLO, EAR.getAStlo());
valuesAS.put(KEY_AS_COMPREHENSIVE, EAR.getAScomp());
valuesAS.put(KEY_AS_COMBINE, EAR.getAScomb());
// values.put(KEY_CREATED_AT, getDateTime());
// updating row
return db.update(TABLE_ASURANSI_RATE, valuesAS, KEY_AS_ID + " = ?",
new String[] { String.valueOf(EAR.getASId()) });
}
//
public void deleteEntryAsuransiRate(long as_id) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_ASURANSI_RATE, KEY_AS_ID + " = ?",
new String[] { String.valueOf(as_id) });
}
void InsertERs(SQLiteDatabase db) {
try {
db.beginTransaction();
ContentValues cv = new ContentValues();
cv.put(KEY_ER_ID, 1);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 12);
cv.put(KEY_ER_RATE, 12.1);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 2);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 24);
cv.put(KEY_ER_RATE, 12.2);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 3);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 36);
cv.put(KEY_ER_RATE, 12.3);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 4);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 48);
cv.put(KEY_ER_RATE, 12.4);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 5);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 60);
cv.put(KEY_ER_RATE, 12.5);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 6);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 12);
cv.put(KEY_ER_RATE, 12.6);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 7);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 24);
cv.put(KEY_ER_RATE, 12.7);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 8);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 36);
cv.put(KEY_ER_RATE, 12.8);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 9);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 48);
cv.put(KEY_ER_RATE, 12.9);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
cv.put(KEY_ER_ID, 10);
cv.put(KEY_ER_USEDORNEW, "Baru");
cv.put(KEY_ER_TENOR, 60);
cv.put(KEY_ER_RATE, 13);
db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
// db.insert(TABLE_EFFECTIVE_RATE, KEY_ER_ID, cv);
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
// db.close();
}
void insertASs(SQLiteDatabase db) {
try {
db.beginTransaction();
ContentValues cv = new ContentValues();
cv.put(KEY_AS_ID, 1);
cv.put(KEY_AS_REGIONAL, 1);
cv.put(KEY_AS_TENOR, 12);
cv.put(KEY_AS_TLO, 1.00);
cv.put(KEY_AS_COMPREHENSIVE, 2.00);
cv.put(KEY_AS_COMBINE, 3.00);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 2);
cv.put(KEY_AS_REGIONAL, 1);
cv.put(KEY_AS_TENOR, 24);
cv.put(KEY_AS_TLO, 1.01);
cv.put(KEY_AS_COMPREHENSIVE, 2.01);
cv.put(KEY_AS_COMBINE, 3.01);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 3);
cv.put(KEY_AS_REGIONAL, 1);
cv.put(KEY_AS_TENOR, 36);
cv.put(KEY_AS_TLO, 1.02);
cv.put(KEY_AS_COMPREHENSIVE, 2.02);
cv.put(KEY_AS_COMBINE, 3.02);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 4);
cv.put(KEY_AS_REGIONAL, 1);
cv.put(KEY_AS_TENOR, 48);
cv.put(KEY_AS_TLO, 1.03);
cv.put(KEY_AS_COMPREHENSIVE, 2.03);
cv.put(KEY_AS_COMBINE, 3.03);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 5);
cv.put(KEY_AS_REGIONAL, 1);
cv.put(KEY_AS_TENOR, 60);
cv.put(KEY_AS_TLO, 1.04);
cv.put(KEY_AS_COMPREHENSIVE, 2.04);
cv.put(KEY_AS_COMBINE, 3.04);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 6);
cv.put(KEY_AS_REGIONAL, 2);
cv.put(KEY_AS_TENOR, 12);
cv.put(KEY_AS_TLO, 1.05);
cv.put(KEY_AS_COMPREHENSIVE, 2.05);
cv.put(KEY_AS_COMBINE, 3.05);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 7);
cv.put(KEY_AS_REGIONAL, 2);
cv.put(KEY_AS_TENOR, 24);
cv.put(KEY_AS_TLO, 1.06);
cv.put(KEY_AS_COMPREHENSIVE, 2.06);
cv.put(KEY_AS_COMBINE, 3.06);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 8);
cv.put(KEY_AS_REGIONAL, 2);
cv.put(KEY_AS_TENOR, 36);
cv.put(KEY_AS_TLO, 1.07);
cv.put(KEY_AS_COMPREHENSIVE, 2.07);
cv.put(KEY_AS_COMBINE, 3.07);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 9);
cv.put(KEY_AS_REGIONAL, 2);
cv.put(KEY_AS_TENOR, 48);
cv.put(KEY_AS_TLO, 1.08);
cv.put(KEY_AS_COMPREHENSIVE, 2.08);
cv.put(KEY_AS_COMBINE, 3.08);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 10);
cv.put(KEY_AS_REGIONAL, 2);
cv.put(KEY_AS_TENOR, 60);
cv.put(KEY_AS_TLO, 1.09);
cv.put(KEY_AS_COMPREHENSIVE, 2.09);
cv.put(KEY_AS_COMBINE, 3.09);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 11);
cv.put(KEY_AS_REGIONAL, 3);
cv.put(KEY_AS_TENOR, 12);
cv.put(KEY_AS_TLO, 1.10);
cv.put(KEY_AS_COMPREHENSIVE, 2.10);
cv.put(KEY_AS_COMBINE, 3.10);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 12);
cv.put(KEY_AS_REGIONAL, 3);
cv.put(KEY_AS_TENOR, 24);
cv.put(KEY_AS_TLO, 1.11);
cv.put(KEY_AS_COMPREHENSIVE, 2.11);
cv.put(KEY_AS_COMBINE, 3.11);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 13);
cv.put(KEY_AS_REGIONAL, 3);
cv.put(KEY_AS_TENOR, 36);
cv.put(KEY_AS_TLO, 1.12);
cv.put(KEY_AS_COMPREHENSIVE, 2.12);
cv.put(KEY_AS_COMBINE, 3.12);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 14);
cv.put(KEY_AS_REGIONAL, 3);
cv.put(KEY_AS_TENOR, 48);
cv.put(KEY_AS_TLO, 1.13);
cv.put(KEY_AS_COMPREHENSIVE, 2.13);
cv.put(KEY_AS_COMBINE, 3.13);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
cv.put(KEY_AS_ID, 15);
cv.put(KEY_AS_REGIONAL, 3);
cv.put(KEY_AS_TENOR, 60);
cv.put(KEY_AS_TLO, 1.14);
cv.put(KEY_AS_COMPREHENSIVE, 2.14);
cv.put(KEY_AS_COMBINE, 3.14);
db.insert(TABLE_ASURANSI_RATE, KEY_AS_ID, cv);
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
// db1.close();
}
public Cursor getERValues(int index) {
String from[] = { "KEY_ER_USEDORNEW", "KEY_ER_TENOR", "KEY_ER_RATE" };
String where = DatabaseMaster.KEY_ER_ID + "=?";
String[] whereArgs = new String[] { index + "" };
Cursor cursor = db.query(DatabaseMaster.TABLE_EFFECTIVE_RATE, from,
where, whereArgs, null, null, null, null);
return cursor;
}
class DataHandler extends Activity {
public void getData(int id) {
Cursor c = getERValues(id);
if (c != null) {
while (c.moveToNext()) {
String UorN = c.getString(c.getColumnIndex("Used_or_New"));
int er_t = c.getInt(c.getColumnIndex("ER_tenor"));
double er_r = c.getDouble(c.getColumnIndex("ER_rate"));
// use these strings as you want
Intent Person = new Intent(this, MediatorMaster.class);
Person.putExtra("Used_or_New", UorN);
Person.putExtra("ER_tenor", er_t);
Person.putExtra("ER_rate", er_r);
startActivity(Person);
}
}
}
}
// closing database
public void closeDB() {
SQLiteDatabase db = this.getReadableDatabase();
if (db != null && db.isOpen())
db.close();
}
@Override
public void onOpen(SQLiteDatabase db) {
super.onOpen(db);
if (!db.isReadOnly()) {
// Enable foreign key constraints
db.execSQL("PRAGMA foreign_keys=ON;");
}
}
}
The other that suppose to display the data that sent via intent:
public class MediatorMaster extends Activity {
@Override
protected void onCreate(Bundle unpack) {
// TODO Auto-generated method stub
super.onCreate(unpack);
setContentView(R.layout.test);
unpack = getIntent().getExtras();
//for(){
if (unpack != null) {
String UorN = unpack.getString("Used_or_New");
//int er_t = unpack.getInt("er_t");
//double er_r = unpack.getDouble("er_r");
Message.message(this, "Result :"+ UorN + " " /*+ er_t + " " + er_r*/);
}
else {
Message.message(this, "unread datas");
}
// }
}
}
EDIT: i have the another class that will display how many entries and also will display all the datas. I created this to make sure if the datas are really there.
The class that will display:
public class MainActivity extends Activity {
// Database Helper
DatabaseMaster db;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// SQLiteDatabase db = this.getReadaleDatabase();
//db = new DatabaseHelper(getApplicationContext());
db = new DatabaseMaster(getApplicationContext());
Log.d("Effectiverate Count", " EffectiverateCount: "
+ db.getASCount());
Log.d("Asuransirate Count", " AsuransirateCount: "
+ db.getERCount());
// getting all ER
Log.d("Get ER", "GEtting All ER");
List<EntryEffectiveRate> allEffectiveRate = db.getAllEffectiveRates();
for (EntryEffectiveRate ER : allEffectiveRate) {
Log.d("ER_ids", String.valueOf(ER.getERId()));
Log.d("ER_rates", ER.getERKondisi());
Log.d("ER_tenors", String.valueOf(ER.getERTenor()));
Log.d("ER_rates", String.valueOf(ER.getERrate()));
}
// getting all AS
Log.d("Get AS", "GEtting All AS");
List<EntryAsuransiRate> allAsuransiRate = db.getAllAsuransiRates();
for (EntryAsuransiRate AS : allAsuransiRate) {
Log.d("AS_ids", String.valueOf(AS.getASId()));
Log.d("AS_tenors", String.valueOf(AS.getAStenor()));
Log.d("AS_tlos", String.valueOf(AS.getAStlo()));
Log.d("AS_comps", String.valueOf(AS.getAScomp()));
Log.d("AS_combs", String.valueOf(AS.getAScomb()));
}
// Don't forget to close database connection
db.closeDB();
}}
other classes that will be the constructor, defining the paramaters of the input:
public class EntryAsuransiRate {
int as_id;
int ASzona;
int AStenor;
double AStlo;
double AScomp;
double AScomb;
// String created_at;
// constructors
public EntryAsuransiRate() {
}
public EntryAsuransiRate(int ASzona, int AStenor, double AStlo,
double AScomp, double AScomb) {
this.ASzona = ASzona;
this.AStenor = AStenor;
this.AStlo = AStlo;
this.AScomp = AScomp;
this.AScomb = AScomb;
}
public EntryAsuransiRate(int as_id, int ASzona, int AStenor, double AStlo,
double AScomp, double AScomb) {
this.as_id = as_id;
this.ASzona = ASzona;
this.AStenor = AStenor;
this.AStlo = AStlo;
this.AScomp = AScomp;
this.AScomb = AScomb;
}
// setters
public void setASId(int as_id) {
this.as_id = as_id;
}
public void setASzona(int ASzona) {
this.ASzona = ASzona;
}
public void setAStenor(int AStenor) {
this.AStenor = AStenor;
}
public void setAStlo(double AStlo) {
this.AStlo = AStlo;
}
public void setAScomp(double AScomp) {
this.AScomp = AScomp;
}
public void setAScomb(double AScomb) {
this.AScomb = AScomb;
}
// public void setCreatedAt(String created_at){
// this.created_at = created_at;
// }
// getters
public long getASId() {
return this.as_id;
}
public int getASzona() {
return this.ASzona;
}
public int getAStenor() {
return this.AStenor;
}
public double getAStlo() {
return this.AStlo;
}
public double getAScomp() {
return this.AScomp;
}
public double getAScomb() {
return this.AScomb;
}
}
and
public class EntryEffectiveRate {
int er_id;
String ERkondisi;
int ERtenor;
double ERrate;
//String created_at;
// constructors
public EntryEffectiveRate() {
}
public EntryEffectiveRate(String ERkondisi, int ERtenor, double ERrate) {
this.ERkondisi = ERkondisi;
this.ERtenor = ERtenor;
this.ERrate = ERrate;
}
public EntryEffectiveRate(int er_id, String ERkondisi, int ERtenor, double ERrate) {
this.er_id = er_id;
this.ERkondisi = ERkondisi;
this.ERtenor = ERtenor;
this.ERrate = ERrate;
}
// setters
public void setERId(int er_id) {
this.er_id = er_id;
}
public void setERKondisi(String ERkondisi) {
this.ERkondisi = ERkondisi;
}
public void setERTenor(int ERtenor) {
this.ERtenor = ERtenor;
}
public void setERRate(double ERrate){
this.ERrate = ERrate;
}
//public void setCreatedAt(String created_at){
// this.created_at = created_at;
//}
// getters
public long getERId() {
return this.er_id;
}
public String getERKondisi() {
return this.ERkondisi;
}
public int getERTenor() {
return this.ERtenor;
}
public double getERrate(){
return this.ERrate;
}
}
logcat result when mainactivity is executed/run
04-07 14:35:11.827: D/Effectiverate Count(395): EffectiverateCount: 15
04-07 14:35:11.837: D/Asuransirate Count(395): AsuransirateCount: 10
04-07 14:35:11.837: D/Get ER(395): GEtting All ER
04-07 14:35:11.837: E/DatabaseHelper(395): SELECT * FROM effective_rate
04-07 14:35:11.847: D/ER_ids(395): 1
04-07 14:35:11.867: D/ER_rates(395): Baru
04-07 14:35:11.867: D/ER_tenors(395): 12
04-07 14:35:11.890: D/ER_rates(395): 12.1
04-07 14:35:11.890: D/ER_ids(395): 2
04-07 14:35:11.890: D/ER_rates(395): Baru
04-07 14:35:11.890: D/ER_tenors(395): 24
04-07 14:35:11.890: D/ER_rates(395): 12.2
04-07 14:35:11.890: D/ER_ids(395): 3
04-07 14:35:11.890: D/ER_rates(395): Baru
04-07 14:35:11.890: D/ER_tenors(395): 36
04-07 14:35:11.890: D/ER_rates(395): 12.3
04-07 14:35:11.897: D/ER_ids(395): 4
04-07 14:35:11.897: D/ER_rates(395): Baru
04-07 14:35:11.897: D/ER_tenors(395): 48
04-07 14:35:11.897: D/ER_rates(395): 12.4
04-07 14:35:11.897: D/ER_ids(395): 5
04-07 14:35:11.897: D/ER_rates(395): Baru
04-07 14:35:11.897: D/ER_tenors(395): 60
04-07 14:35:11.897: D/ER_rates(395): 12.5
04-07 14:35:11.897: D/ER_ids(395): 6
04-07 14:35:11.897: D/ER_rates(395): Baru
04-07 14:35:11.897: D/ER_tenors(395): 12
04-07 14:35:11.897: D/ER_rates(395): 12.6
04-07 14:35:11.897: D/ER_ids(395): 7
04-07 14:35:11.934: D/ER_rates(395): Baru
04-07 14:35:11.934: D/ER_tenors(395): 24
04-07 14:35:11.937: D/ER_rates(395): 12.7
04-07 14:35:11.937: D/ER_ids(395): 8
04-07 14:35:11.937: D/ER_rates(395): Baru
04-07 14:35:11.937: D/ER_tenors(395): 36
04-07 14:35:11.937: D/ER_rates(395): 12.8
04-07 14:35:11.937: D/ER_ids(395): 9
04-07 14:35:11.937: D/ER_rates(395): Baru
04-07 14:35:11.937: D/ER_tenors(395): 48
04-07 14:35:11.937: D/ER_rates(395): 12.9
04-07 14:35:11.937: D/ER_ids(395): 10
04-07 14:35:11.937: D/ER_rates(395): Baru
04-07 14:35:11.937: D/ER_tenors(395): 60
04-07 14:35:11.937: D/ER_rates(395): 13.0
04-07 14:35:11.937: D/Get AS(395): GEtting All AS
04-07 14:35:11.937: E/DatabaseHelper(395): SELECT * FROM asuransi_rate
04-07 14:35:11.947: D/AS_ids(395): 1
04-07 14:35:11.957: D/AS_tenors(395): 12
04-07 14:35:11.957: D/AS_tlos(395): 1.0
04-07 14:35:11.957: D/AS_comps(395): 2.0
04-07 14:35:11.957: D/AS_combs(395): 3.0
.
.
.
04-07 14:35:12.007: D/AS_ids(395): 15
04-07 14:35:12.007: D/AS_tenors(395): 60
04-07 14:35:12.047: D/AS_tlos(395): 1.14
04-07 14:35:12.047: D/AS_comps(395): 2.14
04-07 14:35:12.047: D/AS_combs(395): 3.14
04-07 14:35:16.258: W/KeyCharacterMap(395): No keyboard for id 0
04-07 14:35:16.258: W/KeyCharacterMap(395): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
04-07 14:35:54.967: D/dalvikvm(395): GC_FOR_MALLOC freed 5071 objects / 280936 bytes in 70ms
04-07 14:35:57.150: W/KeyCharacterMap(395): No keyboard for id 0
04-07 14:35:57.150: W/KeyCharacterMap(395): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
04-07 14:42:28.127: W/IInputConnectionWrapper(395): showStatusIcon on inactive InputConnection
04-07 14:42:33.598: D/dalvikvm(395): GC_EXPLICIT freed 1992 objects / 76432 bytes in 55ms
when it runs it will give message "unread datas". Means when trying to getExtras it got null values. Where do i wrong? I want to pass all inserted datas to new activity(MediatorMaster , which now is used for checking whether the extras get to there or not) that later then will be calculated. How to do that? any suggestion?
thanks in advance
回答1:
You're closing the cursors before you return them.
If you're going to return cursors, close them when you're done with them in the calling function.
Cursor getAllASrates() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor cur = db.rawQuery("Select " + KEY_AS_ID + " as _id, "
+ KEY_AS_REGIONAL + ", " + KEY_AS_TENOR + ", " + KEY_AS_TLO
+ ", " + KEY_AS_COMPREHENSIVE + ", " + KEY_AS_COMBINE + ", "
+ " from " + TABLE_ASURANSI_RATE, new String[] {});
//close the cursor in the calling function after finished with it
//cur.close();
return cur;
}
This one too:
Cursor getAllERates() {
SQLiteDatabase db = this.getWritableDatabase();
// Cursor cur=
// db.rawQuery("Select "+colID+" as _id , "+colName+", "+colAge+" from "+employeeTable,
// new String [] {});
// Cursor cur= db.rawQuery("SELECT * FROM "+viewEmps,null);
Cursor cur = db.rawQuery("Select " + KEY_ER_ID + " as _id, "
+ KEY_ER_USEDORNEW + ", " + KEY_ER_TENOR + ", " + KEY_ER_RATE
+ ", " + " from " + TABLE_EFFECTIVE_RATE, new String[] {});
//close the cursor in the calling function after finished with it
//cur.close();
return cur;
}
Update:
So, it looks like there is an issue with another piece of code, so I modified it and posted below. Try accessing the columns directly, and don't use a while loop, since it looks like this cursor will only return one result.
If the "Cursor count: " log entry gives a size of zero, then your query is not returning any data.
This also shows where you should close the cursor.
class DataHandler extends Activity {
public void getData(int id) {
Cursor c = getERValues(id);
Log.d(LOG, "Cursor count: " + c.getCount());
if (c != null) {
if (c.moveToFirst()) {
String UorN = c.getString(0);
int er_t = c.getInt(1);
double er_r = c.getDouble(2);
// use these strings as you want
Intent Person = new Intent(this, MediatorMaster.class);
Person.putExtra("Used_or_New", UorN);
Person.putExtra("ER_tenor", er_t);
Person.putExtra("ER_rate", er_r);
startActivity(Person);
}
else{
Log.e(LOG, "Cursor could not moveToFirst ");
}
}
c.close(); //close the cursor here
}
}
回答2:
After few days looking for how to that, i got the solution. Thanks to Daniel Nugent, Dev and Prashant Bhoir for helping me figure this out.The Solution is using Array as a temporary list that will read all the data in a specific table(you can also make it read for a specific column).For example:
To get a value/some value* from a column from a table: *it depends on how many data you have inserted in. The array list will getting all the data, if you have not insert any value then it will give null value.
public List<TheModelClass> getTheValue(String SomeValue) {
List<TheModelClass> NameOfTheList = new ArrayList<TheModelClass>();
String selectQuery = "SELECT * FROM " + TABLE_ONE + " where " + KEY_COLUMN_ONE + " = ?";
Log.e(LOG, selectQuery);
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery(selectQuery, new String[] {SomeValue});
// looping through all rows and adding to list
if (c.moveToFirst()) {
do {
TheModelClass AnythingYouWantToNameThis = new TheModelClass();
AnythingYouWantToNameThis.setModelValueNumberOne(c.getString(c.getColumnIndex(KEY_COLUMN_ONE)));
// add
NameOfTheList.add(AnythingYouWantToNameThis);
} while (c.moveToNext());
}
//always close the cursor after using it cause it may cause memory leak
c.close();
return NameOfTheList;
}
To get a value/some value from a table:
public List<TheModelClass> getAllNameOfTheList() {
List<TheModelClass> NameOfTheList = new ArrayList<TheModelClass>();
String selectQuery = "SELECT * FROM " + TABLE_ONE;
Log.e(LOG, selectQuery);
SQLiteDatabase db = this.getReadableDatabase();
Cursor c = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (c.moveToFirst()) {
do {
TheModelClass SomeName = new TheModelClass();
SomeName.setValueNumberOne(c.getString(c.getColumnIndex(KEY_COLUMN_ONE)));
SomeName.setValueNumberTwo(c.getInt(c.getColumnIndex(KEY_COLUMN_TWO)));
SomeName.setValueNumberThree(c.getDouble(c.getColumnIndex(KEY_COLUMN_THREE)));
SomeName.setValueNumberFour(c.getLong(c.getColumnIndex(KEY_COLUMN_FOUR)))
.
.
.
SomeName.setValueNumberX(c.getSomeDataTypeBasedOnTheTypeYouHaveSetInTheModelClass(c.getColumnIndex(THE_COLUMN)))
// add
NameOfTheList.add(SomeName);
} while (c.moveToNext());
}
// db.close();
c.close();
return NameOfTheList;
}
Then Call it on a class(lets say this class is a database values handler) For 1 column:
// Database
YourDatabaseClass db;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.testgetdata);
db = new YourDatabaseClass(getApplicationContext());
List<TheModelClass> Anything = db.getValue();
TheModelClass Value0 = Anything.get(0);
TheModelClass Value1 = Anything.get(1);
.
.
.
TheModelClass ValueX = Anything.get(X*);
String Value0 = Value0.getValue();
//2nd column
String Value1 = Value1.getValue();
//column X
String ValueX = ValueX.getValue();
Intent person = new Intent(this, NameOfTheClassThatYouWantToHaveThisValues.class);
Bundle backpack = new Bundle();
backpack.putString("AKA_47", Value0);
backpack.putString("Missile", Value1);
.
.
.
backpack.putString("Anything", ValueX);
person.putExtras(backpack);
setResult(RESULT_OK, person);
startActivity(person);
// Don't forget to close database connection
db.closeDB();
For more than one Column: // Database YourDatabaseClass db;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.testgetdata);
db = new YourDatabaseClass(getApplicationContext());
List<TheModelClass> Anything = db.getAllDataOfTheList();
TheModelClass Value0 = Anything.get(0);
TheModelClass Value1 = Anything.get(1);
.
.
.
TheModelClass ValueX = Anything.get(X*);
/*Based on how many row you have, Start with row 0 (zero)
* whenever TheModelClass Value0 = Anything.get(0); called then you will have
* column0Value0 column01alue1 column2Value2.........columnXValueX
*/
long Value0FromColumn0 = Value0.getId();
String Value1FromColumn0 = Value0.getName();
int Value2FromColumn0 = Value0.getPhoneNumber();
double Value3FromColumn0 = Value0.getETC();
//2nd column
long Value0FromColumn1 = Value1.getId();
String Value1FromColumn1 = Value1.getName();
int Value2FromColumn1 = Value1.getPhoneNumber();
double Value3FromColumn1 = Value1.getETC();
//column X
long ValueXFromColumnX = ValueX.getId();
String ValueXFromColumnX = ValueX.getName();
int ValueXFromColumnX = ValueX.getPhoneNumber();
double ValueXFromColumnX = ValueX.getETC();
Intent person = new Intent(this, NameOfTheClassThatYouWantToHaveThisValues.class);
Bundle backpack = new Bundle();
backpack.putLong("Pencil", Value0FromColumn0);
backpack.putString("Book", Value1FromColumn0);
backpack.putInt("Laptop", Value2FromColumn);
backpack.putDouble("Nuclear_BOMB", Value3FromColumn0);
backpack.putLong("Spiderman", Value0FromColumn1);
backpack.putString("IronMan", Value1FromColumn1);
backpack.putInt("Hercules", Value2FromColumn1);
backpack.putDouble("MasterYoda", Value3FromColumn1);
.
.
.
backpack.putLong("Monkey", ValueXFromColumnX);
backpack.putString("Dolphin", ValueXFromColumnX);
backpack.putInt("Alien", ValueXFromColumnX);
backpack.putDouble("Predator", ValueXFromColumnX);
person.putExtras(backpack);
setResult(RESULT_OK, person);
startActivity(person);
// Don't forget to close database connection
db.closeDB();
Then recieve the value(s) in another class for more than one column:
@Override
protected void onCreate(Bundle bundle) {
// TODO Auto-generated method stub
super.onCreate(bundle);
setContentView(R.layout.test);
Bundle exploded = this.getIntent().getExtras();
if (this.getIntent().getExtras() != null) {
long id0 = exploded.getLong("Pencil");
String name0 = exploded.getString("Book");
int phoneNumber0 = exploded.getInt("Laptop");
double etc0 = exploded.getDouble("Nuclear_BOMB");
.
.
.
long X = exploded.getLong("X");
String Y = exploded.getString("Y");
int Z = exploded.getInt("Z");
double W = exploded.getDouble("W");
}
else {
Message.message(this, "unread datas");
}}
For one column:
Bundle exploded = this.getIntent().getExtras();
if (this.getIntent().getExtras() != null) {
String something0 = exploded.getString("AKA_47");
String anything0 = exploded.getString("Missile");
String whatever0 = exploded.getString("Anything");
.
.
.
String X = exploded.getString("X");
}
else {
Message.message(this, "unread datas");
}
If you wondering what is Message.message, its a class.The code:
import android.content.Context;
import android.widget.Toast;
public class Message {
public static void message(Context context, String message)
{
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
}
}
Then you have them. Happy Coding!
来源：https://stackoverflow.com/questions/29485685/android-passing-variables-from-inside-database-class