How to decode arrays in array?

[kiralikbeyin]

String tester = "[["🕐","Pt","Sa","Çr","Pe","Cm","Ct","Pz"],["00-01","21","21","21","21","21","21","21"],["01-02","21","21","21","21","21","21","21"]]";

Couldn't find an example, is it possible?

[bblanchon]

JsonArray& root = jsonBuffer.parseArray(tester);
const char* value = root[0][0];

[kiralikbeyin]

@bblanchon Thank you but i changed it because i get empty responses (Half of this Json data works)

Tried 1024-2048-4096 Staticbuffer but didn't work. (Nodemcu 1.0)
Latest ArduinoJson lib installed

[{"Saat":"00-01","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"01-02","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"02-03","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"03-04","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"04-05","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"05-06","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"06-07","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"07-08","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"08-09","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"09-10","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"10-11","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"11-12","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"12-13","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"13-14","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"14-15","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"15-16","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"16-17","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"17-18","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"18-19","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"19-20","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"20-21","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"21-22","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"22-23","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"},{"Saat":"23-00","Pt":"21","Sa":"21","Çr":"21","Pe":"21","Cm":"21","Ct":"21","Pz":"21"}]

int haft[23][8];

File haftal = SPIFFS.open("/haftal.json", "r");
if (haftal) {
  size_t size = haftal.size();
  std::unique_ptr<char[]> bufhaft(new char[size]);
  haftal.readBytes(bufhaft.get(), size);
  StaticJsonBuffer<4096> jsonBufferhaft;
  JsonArray& jsonhaft = jsonBufferhaft.parseArray(bufhaft.get());
  haftal.close();
  if (!jsonhaft.success())
  {
    Serial.println("parseObject() failed");
    return;
  }
  else
  {
// I can enter here
    Serial.println("parseObject() OKOKOKOKOK");
    String denet;
    jsonhaft.printTo(denet);
    haftalikws =  denet; //carry to a global String

    for (int i = 0 ; i < 25; i++) {
      haft[i][1] = jsonhaft[i]["Pt"];
      haft[i][2] = jsonhaft[i]["Sa"];
      haft[i][3] = jsonhaft[i]["Çr"];
      haft[i][4] = jsonhaft[i]["Pe"];
      haft[i][5] = jsonhaft[i]["Cm"];
      haft[i][6] = jsonhaft[i]["Ct"];
      haft[i][7] = jsonhaft[i]["Pz"];
    }
  }
}

[bblanchon]

The ArduinoJson Assistant says that you need 3560 bytes to store the object tree, so a JsonBuffer of 4096 bytes is appropriate.

But it's way too big for the stack of an ESP8266; you need to move that memory to the heap.

To do this, just replace:

StaticJsonBuffer<4096> jsonBufferhaft;

by:

DynamicJsonBuffer jsonBufferhaft(4096);

Also, I see that the haft array is using a significant part of the stack, you may need to move it to the heap too.

By the way, I see that you switch from String to char[] which is a good idea, since it avoids the duplication of the JSON input in the JsonBuffer 👍

One last thing, you could get a significant performance boost by using iterators:

for (JsonArray& arr : jsonhaft) {
  haft[i][1] = arr["Pt"];
  haft[i][2] = arr["Sa"];
  haft[i][3] = arr["Çr"];
  haft[i][4] = arr["Pe"];
  haft[i][5] = arr["Cm"];
  haft[i][6] = arr["Ct"];
  haft[i][7] = arr["Pz"];
  i++;
}

[kiralikbeyin]

Thank you it works fine.

I didnt understand this because of [i]

for (JsonArray& arr : jsonhaft) {
  haft[i][1] = arr["Pt"];
  haft[i][2] = arr["Sa"];
  haft[i][3] = arr["Çr"];
  haft[i][4] = arr["Pe"];
  haft[i][5] = arr["Cm"];
  haft[i][6] = arr["Ct"];
  haft[i][7] = arr["Pz"];
  i++;
}

[bblanchon]

You're welcome @kiralikbeyin, thanks for using ArduinoJson.

Don't hesitate to edit the wiki if you think you can improve it.
In particular, feel free to add your projects to Projects using ArduinoJson.

Also, a GitHub star is always appreciated 😉