https://viacep.com.br/ws/01001000/json
**URL => https://viacep.com.br/ws/ + Number 01001000 + /json **
Cep.aia (7.6 KB)
Can someone help me I'm having trouble creating this extension, I wish this was the result 
could someone teach me the introduction?
Why do you need an extension?
Simply join the url, the number, and the /json using text blocks
you can use web component instead just use the join block in text as @TIMAI2 said .
or you want to learn how to create an Extension.
cep.txt (1.8 KB)
@SimpleFunction(description = "Website source-code")
public void GetCEP() {
AsynchUtil.runAsynchronously(new Runnable() { // Always do get request Asynchronously
@Override
public void run() {
try {
BufferedReader readStream = new BufferedReader(
new InputStreamReader(
new URL("https://viacep.com.br/ws/01001000/json").openStream())); // Open stream and read the content from streamReader to BufferedReader
String readLine; // Variable which will have one line of data
StringBuilder data = new StringBuilder(); // The result data will be stored here
while ((readLine = readStream.readLine()) != null) data.append(readLine); // Read all the lines from the readStream
readStream.close(); // IMPORTANT close the stream
final String finalData = data.toString(); // Make the string final with the data variable
activity.runOnUiThread(new Runnable() { // Always raise events on UI thread
@Override
public void run() {
GotCEP(finalData); // You're event with data
}
});
} catch (IOException e) {
e.printStackTrace(); // Error occured
}
}
});
}
@SimpleEvent(description = "voltou")
public void GotCEP (String cep){
EventDispatcher.dispatchEvent(this, "GotCEP", cep);
}
}
Java code using these blocks, can teach me how to make these blocks below, like java code
if you want this as an Extension here is it Enjoy
Source code:
package com.mrkoder.cep.dev; import android.app.Activity; import android.content.Context; import com.google.appinventor.components.annotations.*; import com.google.appinventor.components.common.ComponentCategory; import com.google.appinventor.components.runtime.AndroidNonvisibleComponent; import com.google.appinventor.components.runtime.ComponentContainer; import com.google.appinventor.components.runtime.EventDispatcher; import org.json.JSONObject; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import android.os.Handler; @DesignerComponent( version = 1, description = "", category = ComponentCategory.EXTENSION, nonVisible = true, iconName = "") @SimpleObject(external = true) @UsesLibraries(libraries = "") @UsesPermissions(permissionNames = "") public class CEP extends AndroidNonvisibleComponent { private Context context; private Activity activity; public CEP(ComponentContainer container) { super(container.$form()); this.activity = container.$context(); this.context = container.$context(); } @SimpleFunction(description = "Fetch CEP Data") public void FetchCEPData(final String cepNumber) { new Thread(new Runnable() { @Override public void run() { try { String apiUrl = "https://viacep.com.br/ws/" + cepNumber + "/json"; URL url = new URL(apiUrl); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); connection.setConnectTimeout(5000); connection.setReadTimeout(5000); int responseCode = connection.getResponseCode(); if (responseCode == HttpURLConnection.HTTP_OK) { InputStream inputStream = connection.getInputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); StringBuilder response = new StringBuilder(); String line; while ((line = reader.readLine()) != null) { response.append(line); } reader.close(); inputStream.close(); JSONObject jsonResponse = new JSONObject(response.toString()); final String cep = jsonResponse.getString("cep"); final String logradouro = jsonResponse.getString("logradouro"); final String complemento = jsonResponse.getString("complemento"); final String bairro = jsonResponse.getString("bairro"); final String localidade = jsonResponse.getString("localidade"); final String uf = jsonResponse.getString("uf"); final String ibge = jsonResponse.getString("ibge"); final String gia = jsonResponse.getString("gia"); final String ddd = jsonResponse.getString("ddd"); final String siafi = jsonResponse.getString("siafi"); // Pass the full response as a parameter final String fullResponse = response.toString(); Handler handler = new Handler(context.getMainLooper()); handler.post(new Runnable() { @Override public void run() { AddressInfoResult(cep, logradouro, complemento, bairro, localidade, uf, ibge, gia, ddd, siafi, fullResponse); } }); } else { Handler handler = new Handler(context.getMainLooper()); handler.post(new Runnable() { @Override public void run() { AddressInfoResult("Error", "API request failed", "", "", "", "", "", "", "", "", ""); } }); } } catch (final Exception e) { // Declare e as final here Handler handler = new Handler(context.getMainLooper()); handler.post(new Runnable() { @Override public void run() { AddressInfoResult("Error", e.getMessage(), "", "", "", "", "", "", "", "", ""); } }); } } }).start(); } @SimpleEvent(description = "Event triggered with address information.") public void AddressInfoResult( String cep, String logradouro, String complemento, String bairro, String localidade, String uf, String ibge, String gia, String ddd, String siafi, String fullResponse) { EventDispatcher.dispatchEvent(this, "AddressInfoResult", cep, logradouro, complemento, bairro, localidade, uf, ibge, gia, ddd, siafi, fullResponse); } }
Blocks:
Results:
Aix File:
CEP.aix (9.9 KB)
@maria1 Not to be offensive, but I suggest doing some research before asking questions, because it would help you in learning to do research. All of your questions were publicly addressed before, so it would be a better idea to search the community/Google instead.
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