How to integrate Google’s generative AI PaLM API with cURL using JSON RestAPI POST in your Android App?

This video shows the steps to integrate Google’s Generative AI’s PaLM API from MakerSuite in your Android App. It uses the cURL command to integrate it.

I hope you like this video. For any questions, suggestions or appreciation please contact us at: https://programmerworld.co/contact/ or email at: programmerworld1990@gmail.com

Complete source code and other details:

package com.programmerworld.googlespalmapi;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

import com.android.volley.AuthFailureError;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.RetryPolicy;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.Map;

public class MainActivity extends AppCompatActivity {
    private TextView textView;
    private EditText editText;
    private String stringAPIKey = "AIzaSyCJ1FEQyrDM6gSiEnKgdr18ykAZO1zqcf8";
    private String stringURLEndPoint = "https://generativelanguage.googleapis.com/v1beta2/models/text-bison-001:generateText?key="
            + stringAPIKey;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        editText = findViewById(R.id.editTextText);
        textView = findViewById(R.id.textView);
    }

    public void buttonPaLMAPI(View view){
        String stringInputText = "Write a story about a magic backpack.";
        if (!editText.getText().toString().isEmpty()){
            stringInputText = editText.getText().toString();
        }
        JSONObject jsonObject = new JSONObject();
        JSONObject jsonObjectText = new JSONObject();
        try {
            jsonObjectText.put("text", stringInputText);
            jsonObject.put("prompt", jsonObjectText);

        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST,
                stringURLEndPoint,
                jsonObject,
                new Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {
                        try {
                            String stringOutput = response.getJSONArray("candidates")
                                    .getJSONObject(0)
                                    .getString("output");

                            textView.setText(stringOutput);
                        } catch (JSONException e) {
                            throw new RuntimeException(e);
                        }

                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                textView.setText("Error");
            }
        }){
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                Map<String, String> mapHeader = new HashMap<>();
                mapHeader.put("Content-Type", "application/json");
                return mapHeader;
            }
        };
        int intTimeoutPeriod = 60000; //60 seconds
        RetryPolicy retryPolicy = new DefaultRetryPolicy(intTimeoutPeriod,
                DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
                DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);

        jsonObjectRequest.setRetryPolicy(retryPolicy);
        Volley.newRequestQueue(getApplicationContext()).add(jsonObjectRequest);
    }

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.GooglesPaLMAPI"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

plugins {
    id("com.android.application")
}

android {
    namespace = "com.programmerworld.googlespalmapi"
    compileSdk = 34

    defaultConfig {
        applicationId = "com.programmerworld.googlespalmapi"
        minSdk = 34
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation("androidx.appcompat:appcompat:1.6.1")
    implementation("com.google.android.material:material:1.9.0")
    implementation("androidx.constraintlayout:constraintlayout:2.1.4")
    testImplementation("junit:junit:4.13.2")
    androidTestImplementation("androidx.test.ext:junit:1.1.5")
    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")

    implementation("com.android.volley:volley:1.2.1");
}

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="351dp"
        android:layout_height="418dp"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.872" />

    <Button
        android:id="@+id/button"
        android:layout_width="181dp"
        android:layout_height="56dp"
        android:layout_marginStart="112dp"
        android:layout_marginTop="151dp"
        android:onClick="buttonPaLMAPI"
        android:text="PaLM API"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/editTextText"
        android:layout_width="319dp"
        android:layout_height="73dp"
        android:layout_marginStart="42dp"
        android:layout_marginTop="40dp"
        android:ems="10"
        android:hint="Input Text Here ..."
        android:inputType="text"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>