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How to Show SQLite table in Logcat

Database Helper
public class DatabaseHelper extends SQLiteOpenHelper {
// Table Name
public static final String TABLE_NAME = "Contacts";
// Table columns
public static final String ID = "ID";
public static final String Contact_Name = "Contact_Name";
public static final String Phone_Number = "Phone_Number";
public static final String Favourites = "Favourites";
// Database Information
static final String DB_NAME = "MessagePlus_Contacts";
// database version
static final int DB_VERSION = 1;
// Creating table query
private static final String CREATE_TABLE = "Create Table " + TABLE_NAME + "(" + ID
+ " INTEGER PRIMARY KEY AUTOINCREMENT, " + Contact_Name + " TEXT NOT NULL, " + Phone_Number + " INT NOT NULL, " + Favourites + " Boolean NOT NULL);";
private static final String Show_Table = "Select * From " + TABLE_NAME;
public DatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(CREATE_TABLE);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
onCreate(db);
}
public void showData(SQLiteDatabase db){db.execSQL(Show_Table);}
public void insertData(String contactName, String phoneNumber,String favourites) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(DatabaseHelper.Contact_Name, contactName);
values.put(DatabaseHelper.Phone_Number, phoneNumber);
values.put(DatabaseHelper.Favourites, favourites);
db.insert(DatabaseHelper.TABLE_NAME, null, values);
// close db connection
db.close();
}
public int addToFavourites(String favourites) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(DatabaseHelper.Favourites, favourites);
// updating row
return db.update(DatabaseHelper.TABLE_NAME, values, DatabaseHelper.Phone_Number + " = ?", new String[]{favourites});
}
public int getCount() {
String countQuery = "SELECT * FROM " + DatabaseHelper.TABLE_NAME;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
int count = cursor.getCount();
cursor.close();
// return count
return count;
}
Modal
public class FavouritesHelper {
public String Name;
public String PhoneNumber;
public boolean Favourites;
public FavouritesHelper() {
}
public FavouritesHelper(String Name, String PhoneNumber, Boolean Favourites) {
this.Name = Name;
this.PhoneNumber = PhoneNumber;
this.Favourites = Favourites;
}
public String getName() {
return Name;
}
public void setName(String Name) {
this.Name = Name;
}
public String getPhoneNumber() {
return PhoneNumber;
}
public void setPhoneNumber(String PhoneNumber) {
this.PhoneNumber = PhoneNumber;
}
public boolean getFavourites() {
return Favourites;
}
public void setFavourites(boolean Favourites) {
this.Favourites = Favourites;
}
}
This is my database helper and I'm trying to fetch the table in logcat but I don't know how to do that. I know the code is Select * from <tablename> but how do i implement that. I want to see all the data in my table.

Soltion:
Please follow the following steps:
First Step:
Make the below method in DatabaseHelper class:
public List<FavouritesHelper> getAllData() {
List<FavouritesHelper> data = new ArrayList<>();
// Select All Query
String selectQuery = "SELECT * FROM " + FavouritesHelper.TABLE_NAME;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
FavouritesHelper alldata = new FavouritesHelper();
alldata.setName(cursor.getString(cursor.getColumnIndex(FavouritesHelper.Name)));
alldata.setPhoneNumber(cursor.getString(cursor.getColumnIndex(FavouritesHelper.PhoneNumber)));
alldata.setFavourites(cursor.getBoolean(cursor.getColumnIndex(FavouritesHelper.Favourites)));
data.add(alldata);
} while (cursor.moveToNext());
}
// close db connection
db.close();
// return notes list
return data;
}
Second Step:
In your activity:
declare a global object: List<FavouritesHelper> AllData inside your class.
Third Step:
then, add this AllData = new List<FavouritesHelper>(); in your onCreate()
Fourth Step:
write this in your activity after inserting data: AllData = database.getAllData();
Fifth Step:
Print it in log using below statement:
for(FavouritesHelper helper : AllData) {
Log.e("values : ", helper.getName() + ", " + helper.getPhoneNumber() + ", " + helper.getFavourites());
}
That's it.
Try it out. Hope it Helps.

As #pskink suggested you can use dumpCursor like this
create this method inside your DatabaseHelper class
public void dumpCursorInLogCat() {
//here first getting the readable database
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(Show_Table, null);
//here is how you can Dump cursor
DatabaseUtils.dumpCursor(cursor);
cursor.close();
}
and call this method in your activity whenever you want to show data in logcat
call it inside your activity like
new DatabaseHelper(your_activity_name.this).dumpCursorInLogCat();

Why am i using result.getInt(2) / result.getInt(3) and result.getString(0)

I am abit confused why in the RoutineRetrieved function I am using result.getInt(2) when assigning the ACTIVITYIMAGE and result.getInt(3) when assigning the SLOT.... while in the ColourChange function I am using result.getInt(0) when assigning the DAY.
I previously assumed I was pointing to the columns in my sqlite database. But now I am confused. Could someone explain what these numbers mean?
RoutineRetrieved function:
private void routineRetrieved() {
Cursor result = myDb.retrieveRoutine(currentDay);
if (result.getCount() == 0) {
// Do nothing
} else {
while (result.moveToNext()) {
int ActivityImage = result.getInt(2);
int Slot = result.getInt(3);
ImageView emptySlot = (ImageView) findViewById(Slot);
emptySlot.setImageResource(ActivityImage);
}
}
}
ColourChange function:
private void colourChange() {
Cursor result = myDb.checkColour();
if (result.getCount() == 0) {
// Default colour remains
} else {
while (result.moveToNext()) {
String day = result.getString(0);
findViewById(getResources().getIdentifier(day + "button", "id", getPackageName()))
.setBackgroundColor(getResources().getColor(R.color.colorSuccess));
}
}
}
Database.java
public class Database extends SQLiteOpenHelper
{
public static final String DATABASE_NAME = "application.db";
public static final int DATABASE_VERSION = 9;
// Table Name
public static final String RoutineTable = "Routines";
// Column Names
public static final String RoutineColumn1 = "DayOfWeek";
public static final String RoutineColumn2 = "Activity";
public static final String RoutineColumn3 = "Slot";
public Database(Context context)
{
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE `Routines` (`Routine` INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,`DayOfWeek` TEXT NOT NULL,`Activity` INTEGER NOT NULL, `Slot` INTEGER NOT NULL);");
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
onCreate(db);
}
public Cursor retrieveRoutine(String selectedDay) { WHERE DayOfWeek equals selectedDay and store this as result.
SQLiteDatabase db = this.getWritableDatabase();
Cursor result = db.rawQuery("select * from " + RoutineTable + " WHERE DayOfWeek = '" + selectedDay + "'", null);
return result;
}
public boolean insertRoutine(int activityImage, String selectedDay, int activitySlot) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(RoutineColumn1,selectedDay);
contentValues.put(RoutineColumn2,activityImage);
contentValues.put(RoutineColumn3,activitySlot);
long result = db.insert(RoutineTable, null, contentValues);
if(result == -1)
return false;
else
return true;
}
public Cursor checkColour() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor result = db.rawQuery("SELECT DayOfWeek FROM " + RoutineTable + " GROUP BY DayOfWeek", null);
return result;
}

The number parameter in the methods getInt and getString is index, starting by 0, of the column you want to get, relatively to the query you've done.
You have 2 different queries. In the method checkColour() you have the following query, which have only one field:
"SELECT DayOfWeek FROM " + RoutineTable + " GROUP BY DayOfWeek"
So, when you call
Cursor result = myDb.retrieveRoutine(currentDay);
String fieldValue = result.getString(0);
fieldValue will have the value of the first field of the query, in this case DayOfWeek
The same in the other query, that is a SELECT * of the table Routines. In this case the index refers to the field position in the CREATE TABLE statement.

Retrieve data from SQLite on android

I am trying to read data from SQLite in android using three parameters, id, name and date. For example, id="number" and name="something" and date between ("first date", "second date"). the problem is that, i cannot figure out what to do with the last function. There are two more parameters left and i dont know what to do or where to place it. So does anyone have any experience and familiar with this code style and can share or help me? (I take this code from book too and there was not any solution for related to this at all in the book.)
//Table person; It contain the same attribute as Person class
public static final class PersonTable
{
public static final String NAME = "Persons";
public static final class Cols
{
static final String ID = "id";
static final String NAME = "name";
static final String DATE = "date";
}
}
public class PersonCursorWrapper extends CursorWrapper
{
public PersonCursorWrapper(Cursor cursor)
{
super(cursor);
}
public Person getPerson()
{
int id = geIntI(getColumnIndex(PersonTable.Cols.ID));
String name = getString(getColumnIndex(PersonTable.Cols.NAME));
long date = getLong(getColumnIndex(PersonTable.Cols.DATE));
Person Person = new Person();
Person.id(id);
Person.setDate(new Date(date));
Person.setName(name);
return Person;
}
}
}
private PersonCursorWrapper queryPersons(String whereClause, String[] whereArgs)
{
Cursor cursor = mDatabase.query
(
PersonTable.NAME,
null,
whereClause,
whereArgs,
null,
null,
null
);
return new PersonCursorWrapper(cursor);
}
public Person getPerson(int id, String name, String date)
{
PersonCursorWrapper cursor = queryPersons(
PersonTable.Cols.ID + " = ?"+" "+
PersonTable.Cols.NAME + " = ?"+" "+
PersonTable.Cols.DATE + " = ?",
new String[] { id.toString() }
);
try
{
if (cursor.getCount() == 0)
{
return null;
}
cursor.moveToFirst();
return cursor.getPerson();
}
finally
{
cursor.close();
}
}

You have three parameter markers (?), so you have to give it three parameters:
cursor = queryPersons(
...,
new String[] { id.toString(), name, date }
);

For android sqlite database operations you can simply use SQLiteOpenHelper class provided with android.
This is a complete implementation for your case with SQLiteOpenHelper.
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import java.util.ArrayList;
import java.util.List;
public class DatabaseHandler2 extends SQLiteOpenHelper {
// Database details
private static final int DATABASE_VERSION = 1;
private static String DATABASE_NAME = "dbname.db";
// Table names
private static String TABLE_PERSON = "person";
// Table Columns name
private static final String COLUMN_ID = "workout_id";
private static final String COLUMN_NAME = "exercise_id";
// Create queries
private static final String CREATE_TABLE_PERSON = "CREATE TABLE " + TABLE_PERSON + "(" + COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_NAME + " TEXT NOT NULL)";
public DatabaseHandler2(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(CREATE_TABLE_PERSON);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + CREATE_TABLE_PERSON);
}
public Person getPerson(int id) {
Person person = new Person();
String selectQuery = "SELECT * FROM " + TABLE_PERSON + " WHERE " + COLUMN_ID + "=" + id;
SQLiteDatabase rdb;
rdb = this.getReadableDatabase();
Cursor cursor = rdb.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
person.setId(cursor.getInt(0));
person.setName(cursor.getString(1));
} while (cursor.moveToNext());
}
cursor.close();
rdb.close();
return person;
}
public List<Person> getAllPersons() {
List<Person> personList = new ArrayList<Person>();
String selectQuery = "SELECT * FROM " + TABLE_PERSON;
SQLiteDatabase rdb;
rdb = this.getReadableDatabase();
Cursor cursor = rdb.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
Person person = new Person();
person.setId(cursor.getInt(0));
person.setName(cursor.getString(1));
personList.add(person);
} while (cursor.moveToNext());
}
cursor.close();
rdb.close();
return personList;
}
public void savePerson(Person person) {
SQLiteDatabase wdb;
ContentValues values = new ContentValues();
values.put(COLUMN_ID, person.getId());
values.put(COLUMN_NAME, person.getName());
wdb = this.getWritableDatabase();
long rowId = wdb.insert(TABLE_PERSON, null, values);
wdb.close();
}
public void deletePerson(int id) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_PERSON, COLUMN_ID + "='" + id + "'", null);
db.close();
}
public boolean renamePerson(int id, String newName) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(COLUMN_NAME, newName);
int numOfRowsEffected = db.update(TABLE_PERSON, values, COLUMN_ID + "='" + id + "'", null);
db.close();
return numOfRowsEffected > 0 ? true : false;
}
}
Here is the Person class
public class Person {
private int id;
private String name;
public Person() {
}
public Person(int id, String name) {
this.id = id;
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

couldn't get values from sqlite table

In my application I want save data in database.
Here is my code of SQLiteHelper
public class UserSqliteHelper extends SQLiteOpenHelper {
private final String LOGCAT = "JBF/SQLite";
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "jbfjsonEntityDB";
private static final String TABLE_NAME = "jbfjsonEntity";
private static final String KEY_JSON = "json";
private static final String KEY_URL_PATH = "url_path";
private static final String KEY_TIME = "added_on";
public UserSqliteHelper(Context context) {
super(context, "dictionarysqlitehelper.db", null, 1);
Log.d(LOGCAT, "Created");
}
#Override
public void onCreate(SQLiteDatabase db) {
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_NAME + "("
+ KEY_JSON + " TEXT, "
+ KEY_TIME + " TIMESTAMP NOT NULL DEFAULT current_timestamp, "
+ KEY_URL_PATH + " TEXT )";
db.execSQL(CREATE_CONTACTS_TABLE);
}
#Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
String query = "DROP TABLE IF EXISTS " + TABLE_NAME ;
db.execSQL(query); onCreate(db);
}
public void addJsonEntity(JsonEntity jsonEntity) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_JSON, jsonEntity.getJson());
values.put(KEY_URL_PATH, jsonEntity.getUrl_path());
// Inserting Row
db.insert(TABLE_NAME, null, values);
db.close();
}
public JSONObject getJsonByUrl(String url) {
String json = "";
SQLiteDatabase db = this.getReadableDatabase();
try {
// Cursor c = db.query(TABLE_NAME, null, KEY_URL_PATH + "=?", new String[]{url}, null, null, null);
String selectQuery = "SELECT * FROM " + TABLE_NAME + " where " + KEY_URL_PATH + "='"+url+"'";
Cursor c = db.rawQuery(selectQuery, null);
if (c == null) {
return null;
} else {
c.moveToFirst();
json =c.getString(c.getColumnIndex(KEY_JSON));
if (json != null) {
return new JSONObject(json);
} else {
return null;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
When I call from my activity this
UserSqliteHelper sqliteHelper = new UserSqliteHelper(SplashActivity.this);
sqliteHelper.getWritableDatabase();
sqliteHelper.addJsonEntity(new JsonEntity(STRING_CONFIGS_URL,response.toString()));
System.out.println("json ==== "+sqliteHelper.getJsonByUrl(GET_USER_INFO_URL));
I always got this error
android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0
Could anyone tell me what I did wrong in here. Why I can't get my database values?

The query didn't match any data. moveToFirst() fails and the cursor doesn't point to a valid row. You should check that moveToFirst() succeeds - it returns a boolean.
Why it didn't match any data is because you're storing and retrieving data by different keys: STRING_CONFIGS_URL and GET_USER_INFO_URL.

instead of c==null try c.getColumnCount == 0

Android SQLite row doesn't update

I am having big trouble with this issue. I have my sqlite table called Category, where I put columns "name" and "limit" as text and integer. Here is some code:
private static final String CREATE_TABLE_CATEGORY = "CREATE TABLE "
+ TABLE_CATEGORIES + "(" + KEY_ID + " INTEGER PRIMARY KEY," + KEY_CATEGORY_NAME
+ " TEXT," + KEY_SET_LIMIT + " INTEGER" + ")";
There's model class of Category:
public class Category {
int id, limit;
String categoryName;
// Constructors
public Category(){
}
public Category(String categoryName, int limit){
this.categoryName = categoryName;
this.limit = limit;
}
//Setters
public void setCategoryName(String categoryName){
this.categoryName = categoryName;
}
public void setId(int id){
this.id = id;
}
public void setLimit(int limit) {
this.limit = limit;
}
// Getters
public String getCategoryName(){
return this.categoryName;
}
public int getId(){
return this.id;
}
public int getLimit() {
return this.limit;
}
#Override
public String toString(){
return getId() + " " + getCategoryName() + " " + getLimit();
}
}
And there's create category and update method:
public long createCategory(Category cat) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_CATEGORY_NAME, cat.getCategoryName());
values.put(KEY_SET_LIMIT, cat.getLimit());
// insert row
long cat_id = db.insert(TABLE_CATEGORIES, null, values);
return cat_id;
}
public int updateCategoryLimit(long cat_id, int limit) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_SET_LIMIT, limit);
// updating row
return db.update(TABLE_CATEGORIES, values, KEY_ID + " = ?",
new String[] { String.valueOf(cat_id) });
}
In spinner I have Overriden method toString from Category Class. It shows something like this below. From the left: ID, Category_Name, Category_Limit. The problem is that I set all limits to 10. Even if I use other integers, it always show '2'. Help please :)
Here's link to image: http://i.stack.imgur.com/Ae3YZ.png

The insert() call returns -1 if an error occurred. I think you should check it.
And make sure you write the correct column name.
I tried you code,works fine!
05-11 23:13:14.110: I/db update s=(30650): s= 1
ContentValues values = new ContentValues();
values.put(KEY_SET_LIMIT, 29);
int s= db.update(TABLE_CATEGORIES, values, KEY_ID + " = ?", new String[] { String.valueOf(2) });
Log.i("db update s=", "s= " +s);