I have a custom ListView
where I show elementss from a jsonArray
that I download from server. Now I want the user be able to "like" entries. So when he clicks on an ListItem
, the database of the server is updated so ne number of Likes increases. To avoid that users can like infinte times I store a row in the SQLite Database with the position of the ListItem
. This works fine until there are new entries in the server database, and the positions change. How can I solve this problem? Is there a possibility to get an id from a ListItem
instead of the positon or something? Here is my code:
getALlEntrysListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Cursor cursor = getLikes(dbh);
cursor.moveToFirst();
if (cursor.moveToFirst()) {
do {
/*check if Item is liked (=1) or not (=0)*/
if (Integer.parseInt(cursor.getString(2)) == 1) {
dbh.updateLike(dbh, position, Integer.parseInt(cursor.getString(2)), 0);
dislike(position);
cursor.close();
} else if (Integer.parseInt(cursor.getString(2)) == 0) {
dbh.updateLike(dbh, position, Integer.parseInt(cursor.getString(2)), 1);
likeUpload(position);
cursor.close();
} else {
dbh.addLike(dbh, position, 1);
likeUpload(position);
cursor.close();
}
} while (cursor.moveToNext());
}
/*increase numer of likes on the Server Database (the dislike method works the same way):*/
public void likeUpload (int position){
try {
JSONObject entryClicked = jsonArray.getJSONObject(position);
entryID = entryClicked.getString("id");
final List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("id", entryID));
new AsyncTask<ApiConnector, Long, Boolean>() {
@Override
protected Boolean doInBackground(ApiConnector... apiConnectors) {
return apiConnectors[0].like(params);
}
}.execute(new ApiConnector());
finish();
startActivity(getIntent());
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