Simple Caller Talker in Android
Creating a simple caller talker app in Android involves making a phone call and then using Text-to-Speech (TTS) to speak the caller’s name or a predefined message. Below is a step-by-step guide on how to create a basic version of this app.
1. Set Up a New Android Project:
Start by creating a new Android project in Android Studio.
2. Design the User Interface (UI):
Design your app’s user interface. In this basic example, you can have a single button to initiate the phone call and TTS.
<Button
android:id="@+id/callButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Call and Talk"
android:onClick="makeCallAndTalk"
/>3. Add TTS Permissions:
In your AndroidManifest.xml, add the necessary permissions for TTS.
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />4. Implement the Java Code:
In your activity class, implement the functionality to make a phone call and use TTS. Here’s a simplified example:
import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import java.util.Locale;
public class MainActivity extends AppCompatActivity implements OnInitListener {
private static final int PERMISSION_REQUEST_CODE = 123;
private Button callButton;
private TextToSpeech textToSpeech;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
callButton = findViewById(R.id.callButton);
// Initialize TextToSpeech
textToSpeech = new TextToSpeech(this, this);
// Set up click listener for the call button
callButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
makeCallAndTalk();
}
});
}
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = textToSpeech.setLanguage(Locale.US);
if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
Toast.makeText(this, "Language not supported", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(this, "TextToSpeech initialization failed", Toast.LENGTH_SHORT).show();
}
}
public void makeCallAndTalk() {
// Check for CALL_PHONE permission
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, PERMISSION_REQUEST_CODE);
} else {
// You can make the call here
String phoneNumber = "1234567890"; // Replace with the desired phone number
String message = "Hello, this is a test call.";
// Initiate the phone call
makePhoneCall(phoneNumber);
// Use TTS to speak the message
textToSpeech.speak(message, TextToSpeech.QUEUE_FLUSH, null, null);
}
}
private void makePhoneCall(String phoneNumber) {
String uri = "tel:" + phoneNumber;
startActivity(new Intent(Intent.ACTION_CALL, Uri.parse(uri)));
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == PERMISSION_REQUEST_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
makeCallAndTalk();
} else {
Toast.makeText(this, "Permission denied. Cannot make a call.", Toast.LENGTH_SHORT).show();
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (textToSpeech != null) {
textToSpeech.stop();
textToSpeech.shutdown();
}
}
}5. Test the App:
Run your app on a physical device. When you click the “Call and Talk” button, the app should initiate a phone call and use TTS to speak the predefined message.
Remember to replace "1234567890" and "Hello, this is a test call." with the actual phone number and message you want to use. Also, handle permissions and permission requests appropriately for your target Android version.