Save HashMap data into SQLite
- by Matthew
I'm Trying to save data from Json into SQLite. For now I keep the data from Json into HashMap.
I already search it, and there's said use the ContentValues. But I still don't get it how to use it.
I try looking at this question save data to SQLite from json object using Hashmap in Android, but it doesn't help a lot.
Is there any option that I can use to save the data from HashMap into SQLite?
Here's My code.
MainHellobali.java
// Hashmap for ListView
ArrayList<HashMap<String, String>> all_itemList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_helloballi);
all_itemList = new ArrayList<HashMap<String, String>>();
// Calling async task to get json
new getAllItem().execute();
}
private class getAllItem extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
all_item = new JSONArray(jsonStr);
// looping through All Contacts
for (int i = 0; i < all_item.length(); i++) {
JSONObject c = all_item.getJSONObject(i);
String item_id = c.getString(TAG_ITEM_ID);
String category_name = c.getString(TAG_CATEGORY_NAME);
String item_name = c.getString(TAG_ITEM_NAME);
// tmp hashmap for single contact
HashMap<String, String> allItem = new HashMap<String, String>();
// adding each child node to HashMap key => value
allItem.put(TAG_ITEM_ID, item_id);
allItem.put(TAG_CATEGORY_NAME, category_name);
allItem.put(TAG_ITEM_NAME, item_name);
// adding contact to contact list
all_itemList.add(allItem);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
}
I have DatabasehHandler.java and AllItem.java too.
I can put it in here if its necessary.
Thanks before
** Add Edited Code **
// looping through All Contacts
for (int i = 0; i < all_item.length(); i++) {
JSONObject c = all_item.getJSONObject(i);
String item_id = c.getString(TAG_ITEM_ID);
String category_name = c.getString(TAG_CATEGORY_NAME);
String item_name = c.getString(TAG_ITEM_NAME);
DatabaseHandler databaseHandler = new DatabaseHandler(this); //error here "The Constructor DatabaseHandler(MainHellobali.getAllItem) is undefined
}
