Anddroid text to speech TTS implementation

One 、 Recently, there is a face recognition project. After the recognition is successful, there will be a voice broadcast , But the three parties provided Demo This function is not available in , So understand TTS Speech synthesis technology can realize , To install one in advance TTS The engine then calls native TTS, The source code and engine are attached below apk,

AndroidManifest.xml jurisdiction

	<!-- Go to sdcard Permission to write data in  -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <!-- Go to sdcard Permission to read data in  -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Two 、 The above is a tool class encapsulated here , It is very simple to call directly , The normal speaking speed here may be a little fast , It can be defined according to the situation .

package com.baidu.idl.main.facesdk.utils;

import android.annotation.SuppressLint;
import android.content.Context;
import android.speech.tts.TextToSpeech;
import android.speech.tts.UtteranceProgressListener;

public class TTSUtils {
    
    private static final TTSUtils INSTANCE = new TTSUtils();
    private TextToSpeech textToSpeak;
    private boolean isSpeaking;

    private TTS() {
    
    }

    /** *  Broadcast  * * @param context * @param text  Text content  */
    public static void speak(Context context, String text) {
    
        speak(context, text, 1.0f, 1.0f, false);
    }

    /** *  Broadcast  * * @param context * @param text  Text content  * @param ignoreIfSpeaking  If you are broadcasting, ignore  */
    public static void speak(Context context, String text, boolean ignoreIfSpeaking) {
    
        speak(context, text, 1.0f, 1.0f, ignoreIfSpeaking);
    }

    /** *  Broadcast  * * @param context * @param text  Text content  * @param rate  The speed  1.0 It's normal  * @param pitch  intonation  1.0 It's normal  * @param ignoreIfSpeaking  If you are broadcasting, ignore  */
    public static void speak(Context context, String text, float rate, float pitch, boolean ignoreIfSpeaking) {
    
        if (ignoreIfSpeaking && INSTANCE.isSpeaking) return;
        INSTANCE.speakNow(context, text, rate, pitch);
    }

    @SuppressLint("NewApi")
    private void speakNow(final Context context, final String text, final float rate, final float pitch) {
    
        if (textToSpeak == null) {
    
            textToSpeak = new TextToSpeech(context.getApplicationContext(), new TextToSpeech.OnInitListener() {
    
                @Override
                public void onInit(int status) {
    
                    if (status == 0) {
    
                        speakNow(context.getApplicationContext(), text, rate, pitch);
                    } else {
    
                        textToSpeak = null;
                    }
                }
            });
            textToSpeak.setOnUtteranceProgressListener(new UtteranceProgressListener() {
    
                @Override
                public void onStart(String utteranceId) {
    
                    isSpeaking = true;
                }

                @Override
                public void onDone(String utteranceId) {
    
                    isSpeaking = false;
                }

                @Override
                public void onError(String utteranceId) {
    
                    isSpeaking = false;
                }
            });
        } else {
    
            textToSpeak.setSpeechRate(rate);
            textToSpeak.setPitch(pitch);
            textToSpeak.speak(text, TextToSpeech.QUEUE_FLUSH, null, "tts");
        }
    }
}

3、 ... and 、MainActivity Use steps

package com.litrabbit.ttsyuyin;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.TextView;

import com.litrabbit.ttsyuyin.utils.TTSUtils;

public class MainActivity extends AppCompatActivity {
    

    /** *  Remember to install TTS apk engine   Otherwise it won't work   Under the project directory  kdxf_tts_3.0.apk  For the engine apk * @param savedInstanceState */

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        /** * TextView  Text  */
        TextView textView = findViewById(R.id.text_view);
        /** *  Broadcast  * * @param context * @param text  Text content  * @param rate  The speed  1.0 It's normal  * @param pitch  intonation  1.0 It's normal  * @param ignoreIfSpeaking  If you are broadcasting, ignore  */
        TTSUtils.speak(MainActivity.this,textView.getText().toString(),0.5f,0.5f,true);
    }
}

TTS engine apk Connect Extraction code ：1234

Source code address