I am parsing data from json, like this.
private void dataClass() {
Intent intent = getIntent();
String Fdate = intent.getStringExtra("date");
// creating a variable for storing our string.
String url = "https://coindar.org/api/v2/events?access_token={token}&filter_date_start=" Fdate;
// creating a variable for request queue.
RequestQueue queue = Volley.newRequestQueue(this.getApplicationContext());
// making a json object request to fetch data from API.
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
@SuppressLint("NotifyDataSetChanged")
@Override
public void onResponse(JSONArray response) {
// inside on response method extracting data
// from response and passing it to array list
// on below line we are making our progress
// bar visibility to gone.
loadingPB.setVisibility(View.GONE);
try {
// extracting data from json.
for (int i = 0; i < response.length(); i ) {
JSONObject jsonObject = response.getJSONObject(i);
String caption = jsonObject.getString("caption");
String source = jsonObject.getString("source");
String sourceReliable = jsonObject.getString("source_reliable");
String important = jsonObject.getString("important");
int coinID = jsonObject.getInt("coin_id");
String priceChange = jsonObject.getString("coin_price_changes");
int tagNumber = jsonObject.getInt("tags");
// adding all data to our array list.
calendarEventModalArrayList.add(new CalendarEventModal(caption, source, sourceReliable, important, coinID, priceChange, tagNumber));
}
// notifying adapter on data change.
calendarEventRVAdapter.notifyDataSetChanged();
} catch (JSONException e) {
// handling json exception.
e.printStackTrace();
Toast.makeText(CalendarEvent.this, "Something went amiss. Please try again later", Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
@Override
public void one rrorResponse(VolleyError error) {
// displaying error response when received any error.
Toast.makeText(CalendarEvent.this, "Something wentaaaamiss. Please try again later", Toast.LENGTH_SHORT).show();
}
}) {
};
// calling a method to add our
// json object request to our queue.
queue.add(jsonArrayRequest);
}
and json object is something like this,
{
"caption": "Landing Page Launch",
"source": "https://coindar.org/en/event/bzx-protocol-bzrx-landing-page-launch-56269",
"source_reliable": "true",
"important": "false",
"date_public": "2021-11-25 15:32",
"date_start": "2021-12-08",
"date_end": "",
"coin_id": "8630",
"coin_price_changes": "7.24",
"tags": "15"
},
I am getting the coin Id, and now from that coin ID, i want to scan another json file, for that specific id, and get name or symbol from there,
the other json contains,
{
"id": "1",
"name": "Bitcoin",
"symbol": "BTC",
"image_32": "https://coindar.org/images/coins/bitcoin/32x32.png",
"image_64": "https://coindar.org/images/coins/bitcoin/64x64.png"
},
{
"id": "2",
"name": "Ethereum",
"symbol": "ETH",
"image_32": "https://coindar.org/images/coins/ethereum/32x32.png",
"image_64": "https://coindar.org/images/coins/ethereum/64x64.png"
},
this continues for over 11,000 coins :(.
My bindviewholder method,
public void onBindViewHolder(@NonNull CalendarEventRVAdapter.CalendarEventViewHolder holder, int position) {
// on below line we are setting data to our item of
// recycler view and all its views.
CalendarEventModal modal = calendarEventModal.get(position);
holder.headingTV.setText(modal.getCaption());
holder.priceChangeTV.setText(modal.getPriceChange() "% from event announcement");
if(modal.getSourceReliable().matches("true")) {
holder.sourceReTV.setText("Source: Reliable");
}
if(modal.getSourceReliable().matches("false")) {
holder.sourceReTV.setText("Source: Not-reliable");
}
}
Now my question is, how I can on bindviewholder class get the coin ID from first json, and then scan second json for that id and get name of coin and then do holder.settext stuff.
Now i am parsing second json as below,
private void dataClass2() {
// creating a variable for storing our string.
String url = "https://coindar.org/api/v2/coins?access_token={token}";
// creating a variable for request queue.
RequestQueue queue = Volley.newRequestQueue(this.getApplicationContext());
// making a json object request to fetch data from API.
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
@SuppressLint("NotifyDataSetChanged")
@Override
public void onResponse(JSONArray response) {
// inside on response method extracting data
// from response and passing it to array list
// on below line we are making our progress
// bar visibility to gone.
try {
// extracting data from json.
for (int i = 0; i < response.length(); i ) {
JSONObject jsonObject = response.getJSONObject(i);
int cdID = jsonObject.getInt("id");
String cdnName = jsonObject.getString("symbol");
String cdsImage = jsonObject.getString("image_64");
// adding all data to our array list.
calendarCoinModalArrayList.add(new CalendarCoinModal(cdID, cdnName, cdsImage));
}
// notifying adapter on data change.
} catch (JSONException e) {
// handling json exception.
e.printStackTrace();
Toast.makeText(Calendar.this, "Something went amiss. Please try again later", Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
@Override
public void one rrorResponse(VolleyError error) {
// displaying error response when received any error.
Toast.makeText(Calendar.this, "Something wentaaaamiss. Please try again later", Toast.LENGTH_SHORT).show();
}
}) {
};
// calling a method to add our
// json object request to our queue.
queue.add(jsonArrayRequest);
}
Also, while parsing second json
private ArrayList<CalendarCoinModal> calendarCoinModalArrayList;
private CalendarCoinRVAdapter calendarCoinRVAdapter;
}
calendarCoinModalArrayList = new ArrayList<>();
// initializing our adapter class.
calendarCoinRVAdapter = new CalendarCoinRVAdapter(calendarCoinModalArrayList, this);
// calling get data method to get data from API.
dataClass();
Help would be appreciated.
CodePudding user response：
Before setting the test using settext, you need to load the information about the second JSON content. Try this to read json information from the file.
public String loadJSONFromResource() {
String json = null;
try {
InputStream is = getActivity().getResources().openRawResource(R.raw.coindata);
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
json = new String(buffer, "UTF-8");
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
return json;
}
To search based on the id property, Assuming you used an ArrayList.
CalendarCoinModal obj;
int searchId = somevalue;
for(CalendarCoinModal currObj : calendarCoinModalArrayList) {
if(currObj.id == somevalue) {
obj = currObj;
break;
}
}