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POParsing JSON and save them on SQLite Database
 

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  1. POParsing JSON and save them on SQLite Database
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    <p>I used to have this kind of simple JSON data and I could successfully parse the attributes and save them into an SQLite Database.</p> <pre><code>[ { "project_title" : " ", "organization_title" : " ", "website": "", "address": "", "keyword" : "", "short_code" : "", "project_description" : "", "smallImageUrl" : "", "bigImageUrl" : "", "price" : "", "country" : "", "donationAmount" : "", "categories" : "", "campaign_id" : "", "currency_isoname": "", "paypal_email" : "", "elv_available" : "" } ] </code></pre> <p>but now I have this a little bit more complicated JSON file:</p> <pre><code>[ { "location": { "deleted_at": "null", "documentary_video_length": "81", "id": "15", "latitude": "52.4134145988286", "longitude": "13.0904620846177", "position": "5", "updated_at": "2011-08-26T15:30:27+02:00", "name": "Glienicker Br\u00fccke", "text": "", "documentary_video_url": "", "documentary_thumbnail_url": "", "audio_text_url": "", "footages": [ { "id": "31", "latitude": "52.4134145988286", "longitude": "13.0904620846177", "position": "12", "name": "Glienicker Br\u00fccke 1933", "text": "sdcs", "thumbnail_url": "", "video_url": "", "video_length": "2", "time_period": { "id": "24", "name": "1933" } }, { "id": "32", "latitude": "52.4134145988286", "longitude": "13.0904620846177", "position": "12", "name": "Glienicker Br\u00fccke 1985", "text": "fvd", "thumbnail_url": "", "video_url": "", "video_length": 35, "time_period": { "id": 30, "name": "1985" } }, { "id": "33", "latitude": "52.4134145988286", "longitude": "13.0904620846177", "position": "12", "name": "Glienicker Br\u00fccke 1989", "text": "fghg", "thumbnail_url": "", "video_url": "", "video_length": "41", "time_period": { "id": "12", "name": "1989" } } ] } } ] </code></pre> <p>These are the Classes I used to have to parse the JSON and save their attributes into an SQLite Database.</p> <p><strong>IntentService Class</strong></p> <pre><code>public class Sync extends IntentService { public Sync() { super("Sync"); } @Override protected void onHandleIntent(Intent intent) { Database.OpenHelper dbhelper = new Database.OpenHelper(getBaseContext()); SQLiteDatabase db = dbhelper.getWritableDatabase(); DefaultHttpClient httpClient = new DefaultHttpClient(); db.beginTransaction(); HttpGet request = new HttpGet( "https://...."); try { HttpResponse response = httpClient.execute(request); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { InputStream instream = response.getEntity().getContent(); BufferedReader r = new BufferedReader(new InputStreamReader( instream, "UTF-8"), 8000); StringBuilder total = new StringBuilder(); String line; while ((line = r.readLine()) != null) { total.append(line); } instream.close(); String bufstring = total.toString(); JSONArray arr = new JSONArray(bufstring); Database.Tables tab = Database.Tables.AllTables .get(Database.Project.NAME); tab.DeleteAll(db); for (int i = 0; i &lt; arr.length(); i++) { tab.InsertJSON(db, (JSONObject) arr.get(i)); } db.setTransactionSuccessful(); } } catch (Exception e) { e.printStackTrace(); } db.endTransaction(); db.close(); getContentResolver().notifyChange( Uri.withAppendedPath(Provider.CONTENT_URI, Database.Project.NAME), null); } } </code></pre> <p><strong>SQLite Database Class</strong></p> <pre><code>public class Database { final OpenHelper openHelper; static final String DATABASE_NAME = "mydb"; static final int DATABASE_VERSION = 6; public Database(Context context) throws Exception { openHelper = new OpenHelper(context); } public void Destroy() { openHelper.close(); } public static enum ColumnsTypes { integer, varchar, guid, datetime, numeric }; static final String COLLATE = "COLLATE LOCALIZED"; static final String EMPTY = ""; public static interface Project { public static final String NAME = "Project"; public static String C_PROJECTTITLE = "project_title"; public static String C_ORGANIZATIONTITLE = "organization_title"; public static String C_WEBSITE = "website"; public static String C_ADDRESS = "address"; public static String C_KEYWORD = "keyword"; public static String C_SHORTCODE = "short_code"; public static String C_PROJECTDESCRIPTION = "project_description"; public static String C_SMALLIMAGE = "smallImageUrl"; public static String C_BIGIMAGE = "bigImageUrl"; public static String C_PRICE = "price"; public static String C_COUNTRY = "country"; public static String C_DONATIONAMOUNT = "donationAmount"; public static String C_CATEGORIES = "categories"; public static String C_CAMPAIGNID = "campaign_id"; public static String C_PAYPALEMAIL = "paypal_email"; public static String C_ELVAVAILABLE = "elv_available"; public static String C_CURRENCY = "currency_isoname"; public final static String[] C = new String[] { C_PROJECTTITLE, C_ORGANIZATIONTITLE, C_WEBSITE, C_ADDRESS, C_KEYWORD, C_SHORTCODE, C_PROJECTDESCRIPTION, C_SMALLIMAGE, C_BIGIMAGE, C_PRICE, C_COUNTRY, C_DONATIONAMOUNT, C_CATEGORIES, C_CAMPAIGNID, C_PAYPALEMAIL, C_ELVAVAILABLE, C_CURRENCY }; public final static ColumnsTypes[] CT = new ColumnsTypes[] { ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar,ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar,ColumnsTypes.varchar, ColumnsTypes.varchar,ColumnsTypes.varchar, ColumnsTypes.varchar, ColumnsTypes.varchar}; public final static boolean[] CN = new boolean[] { false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false,false }; public final static String[] CS = new String[] { COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE, COLLATE }; } public static class Tables { String[] columns = null; ColumnsTypes[] columnsTypes = null; String[] columnsSpecials = null; String name = null; boolean[] columnsNullable = null; Tables(String name, String[] columns, ColumnsTypes[] columnsTypes, String[] columnsSpecials, boolean[] columnsNullable) { this.name = name; this.columns = columns; this.columnsTypes = columnsTypes; this.columnsSpecials = columnsSpecials; this.columnsNullable = columnsNullable; } public String DropStatment() { return "DROP TABLE IF EXISTS " + name; } public void DeleteAll(SQLiteDatabase db) { db.delete(name, null,null); } public long InsertJSON(SQLiteDatabase db, JSONObject obj) throws JSONException { ContentValues vals = new ContentValues(); for (String col : columns) { vals.put(col, obj.getString(col)); } return db.insert(name, null, vals); } public String CreateStatment() { StringBuilder sb = new StringBuilder("CREATE TABLE "); sb.append(name); sb.append(" (["); for (int i = 0; i &lt; columns.length; i++) { sb.append(columns[i]); sb.append("] "); sb.append(columnsTypes[i].name()); sb.append(' '); sb.append(columnsSpecials[i]); if (!columnsNullable[i]) sb.append(" NOT NULL "); sb.append(", ["); } sb.append("_id] INTEGER PRIMARY KEY AUTOINCREMENT);"); return sb.toString(); } public final static Map&lt;String, Tables&gt; AllTables; static { HashMap&lt;String, Tables&gt; aMap = new HashMap&lt;String, Tables&gt;(); aMap.put(Project.NAME, new Tables(Project.NAME, Project.C, Project.CT, Project.CS, Project.CN)); AllTables = Collections.unmodifiableMap(aMap); } } public static class OpenHelper extends SQLiteOpenHelper { public OpenHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { try { for (Tables table : Tables.AllTables.values()) { String create = table.CreateStatment(); db.execSQL(create); } } catch (Exception e) { Log.e("Exception", e.toString()); } } public OpenHelper Recreate() { onUpgrade(getWritableDatabase(), 1, 2); return this; } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { for (Tables table : Tables.AllTables.values()) { db.execSQL(table.DropStatment()); } onCreate(db); } } </code></pre> <p>}</p> <p><strong>ContentProvider Class</strong></p> <pre><code>public class Provider extends ContentProvider { @Override public int delete(Uri arg0, String arg1, String[] arg2) { return 0; } private static final int PROJECTS = 1; private static final int PROJECT = 2; public static final String PROJECTS_MIME_TYPE = ContentResolver.CURSOR_DIR_BASE_TYPE + "/Project"; public static final String PROJECT_MIME_TYPE = ContentResolver.CURSOR_ITEM_BASE_TYPE + "/Project"; public static final String AUTHORITY = "spendino.de"; public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY); static final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH); static final HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); static { matcher.addURI(AUTHORITY, "Project", PROJECTS); matcher.addURI(AUTHORITY, "Project/#", PROJECT); map.put(BaseColumns._ID, BaseColumns._ID); map.put(Database.Project.C_BIGIMAGE, Database.Project.C_BIGIMAGE); map.put(Database.Project.C_COUNTRY, Database.Project.C_COUNTRY); map.put(Database.Project.C_KEYWORD, Database.Project.C_KEYWORD); map.put(Database.Project.C_ORGANIZATIONTITLE, Database.Project.C_ORGANIZATIONTITLE); map.put(Database.Project.C_PRICE, Database.Project.C_PRICE); map.put(Database.Project.C_PROJECTDESCRIPTION, Database.Project.C_PROJECTDESCRIPTION); map.put(Database.Project.C_PROJECTTITLE, Database.Project.C_PROJECTTITLE); map.put(Database.Project.C_SHORTCODE, Database.Project.C_SHORTCODE); map.put(Database.Project.C_SMALLIMAGE, Database.Project.C_SMALLIMAGE); map.put(Database.Project.C_DONATIONAMOUNT, Database.Project.C_DONATIONAMOUNT); map.put(Database.Project.C_WEBSITE, Database.Project.C_WEBSITE); map.put(Database.Project.C_ADDRESS, Database.Project.C_ADDRESS); map.put(Database.Project.C_CATEGORIES, Database.Project.C_CATEGORIES); map.put(Database.Project.C_CAMPAIGNID, Database.Project.C_CAMPAIGNID); map.put(Database.Project.C_PAYPALEMAIL, Database.Project.C_PAYPALEMAIL); map.put(Database.Project.C_ELVAVAILABLE, Database.Project.C_ELVAVAILABLE); map.put(Database.Project.C_CURRENCY, Database.Project.C_CURRENCY); } @Override public String getType(Uri uri) { switch (matcher.match(uri)) { case PROJECTS: return PROJECTS_MIME_TYPE; case PROJECT: return PROJECT_MIME_TYPE; default: throw new IllegalArgumentException("Unknown URL " + uri); } } @Override public Uri insert(Uri arg0, ContentValues arg1) { // TODO Auto-generated method stub return null; } private Database.OpenHelper mDB; @Override public boolean onCreate() { try { mDB = new Database.OpenHelper(getContext()); } catch (Exception e) { Log.e("Exception", e.getLocalizedMessage()); return false; } return true; } @Override public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) { SQLiteQueryBuilder builder = new SQLiteQueryBuilder(); switch (matcher.match(uri)) { case PROJECTS: String table = uri.getPathSegments().get(0); builder.setTables(table); break; case PROJECT: table = uri.getPathSegments().get(0); builder.setTables(table); selection = "_id=?"; selectionArgs = new String[] { uri.getPathSegments().get(1) }; break; default: throw new IllegalArgumentException("Unknown URL " + uri); } builder.setProjectionMap(map); Cursor cursor = builder.query(mDB.getReadableDatabase(), projection, selection, selectionArgs, null, null, sortOrder); if (cursor == null) { return null; } cursor.setNotificationUri(getContext().getContentResolver(), uri); return cursor; } public int update(Uri uri, ContentValues cv, String selection, String[] selectionArgs) { String table = null; SQLiteQueryBuilder builder = new SQLiteQueryBuilder(); switch (matcher.match(uri)) { case PROJECTS: table = uri.getPathSegments().get(0); builder.setTables(table); break; case PROJECT: table = uri.getPathSegments().get(0); builder.setTables(table); selection = "_id=?"; selectionArgs = new String[] { uri.getPathSegments().get(1) }; break; default: throw new IllegalArgumentException("Unknown URL " + uri); } return mDB.getWritableDatabase().update(table, cv, selection, selectionArgs); } } </code></pre> <p>What do I need to change on my above Classes in order to make the new JSON file parsed and saved into the SQLite Database? I'm speaking here since there's no Array on my old JSON file, but I wanna re-use the classes I already have. I know that I need to change the column names and customize the Strings according to my JSON attributes on my SQLite Database and Provider Class</p> <p>Thank you</p>
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    1. UShectichavana
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    1. COare you able get the data in a list view?
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    2. COcheck below link i used this in my app http://stackoverflow.com/questions/5703330/saving-arraylists-in-sqlite-databases
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      1. USDhawal Sodha Parmar
 

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