GenAI example in Sketchware

1. Visit https://aistudio.google.com/ -- Login or Register -- Click on Get API Key.

2. Click on create API Key and create a new API key.

3. Copy the API Key.

4. In main.xml in Sketchware, add EditText edittext1, Button button1, TextView textview1.

5. Create a String variable API_KEY.

6. In onCreate, set value of API_KEY to the API key copied from aistudio.google.com.

7. Add imports event and import following.

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.ResponseBody;
import java.util.concurrent.TimeUnit;

8. Create a more block of type String (returns String) with name buildJsonText [String query_text] and put following codes in it.

try {
JSONObject content = new JSONObject();
content.put("text", _query_text);

JSONArray parts = new JSONArray();
parts.put(content);

JSONObject contentObj = new JSONObject();
contentObj.put("parts", parts);

JSONArray contents = new JSONArray();
contents.put(contentObj);

JSONObject requestBody = new JSONObject();
requestBody.put("contents", contents);

String json = requestBody.toString();

return json;
} catch (JSONException e){
return "";
}

9. Create another more block of type String (returns String) extractTextFromResponse[String response] and put following codes in it.

try {
        JSONObject root = new JSONObject(_response);
        JSONArray candidates = root.getJSONArray("candidates");
        
        // Get first candidate
        JSONObject firstCandidate = candidates.getJSONObject(0);
        JSONObject content = firstCandidate.getJSONObject("content");
        JSONArray parts = content.getJSONArray("parts");
        
        // Get first part
        JSONObject firstPart = parts.getJSONObject(0);
        return firstPart.getString("text");
        
    } catch (JSONException e) {
        e.printStackTrace();
        return "Error parsing JSON: " + e.getMessage();
    }

10. In button1 onClick event put following codes.

OkHttpClient client = new OkHttpClient.Builder()
    .connectTimeout(30, TimeUnit.SECONDS)
    .readTimeout(30, TimeUnit.SECONDS)
    .build();

String json = _buildJsonPrompt(binding.edittext1.getText().toString());

RequestBody body = RequestBody.create(
        json,
        MediaType.get("application/json")
);

Request request = new Request.Builder()
        .url("https://generativelanguage.googleapis.com/v1/models/gemini-2.5-flash:generateContent?key=" + API_KEY)
        .post(body)
        .build();

client.newCall(request).enqueue(new Callback() {
    @Override
    public void onFailure(Call call, final IOException e) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                binding.textview1.setText("Error: " + e.getMessage());
            }
        });
    }

    @Override
    public void onResponse(Call call, final Response response) throws IOException {
        try {
            if (!response.isSuccessful()) {
                final String errorMessage = "Request failed: " + response.code() + " " + response.message();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        binding.textview1.setText(errorMessage);
                    }
                });
                return;
            }
            
            final ResponseBody responseBody = response.body();
            if (responseBody == null) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        binding.textview1.setText("Empty response");
                    }
                });
                return;
            }
            
            final String result = responseBody.string();
            
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    binding.textview1.setText(_extractTextFromResponse(result));
                }
            });
        } finally {
            // Important: Close the response to free resources
            response.close();
        }
    }
});

11. You can add a button to copy the response.

12. In Permission manager add INTERNET permission.

13. Add RequestNetwork component.

14. Switch ON AppCompat and design.

15. Save and run the project.