android TTS text to speech

permissions

<!--连接网络权限，用于执行云端语音能力 -->
    <uses-permission android:name="android.permission.INTERNET" />
    <!--获取手机录音机使用权限，听写、识别、语义理解需要用到此权限 -->
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <!--读取网络信息状态 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <!--获取当前wifi状态 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <!--允许程序改变网络连接状态 -->
    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
    <!--读取手机信息权限 -->
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <!--读取联系人权限，上传联系人需要用到此权限 -->
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <!--外存储写权限，构建语法需要用到此权限 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <!--外存储读权限，构建语法需要用到此权限 -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <!--配置权限，用来记录应用配置信息 -->
    <uses-permission android:name="android.permission.WRITE_SETTINGS" tools:ignore="ProtectedPermissions"/>

page

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:gravity="center"
        tools:context=".MainActivity">
    <EditText
            android:id="@+id/text1"
            android:layout_width="250dp"
            android:layout_height="wrap_content"
            android:text="Hello World!"
            android:textAlignment="center"/>

    <Button
            android:layout_width="250dp"
            android:id="@+id/btn_read"
            android:layout_height="wrap_content"
            android:textAlignment="center"
            android:onClick="read"
            android:text="朗读"/>

</LinearLayout>

JAVA code

public class MainActivity extends AppCompatActivity implements TextToSpeech.OnInitListener {
    
    

    private TextToSpeech textToSpeech = null;

    private EditText editText;
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editText = findViewById(R.id.text1);
        button = findViewById(R.id.btn_read);
        textToSpeech = new TextToSpeech(this, this);
    }


    public void read(View view) {
    
    
        if (textToSpeech != null && !textToSpeech.isSpeaking()) {
    
    
            // 设置音调，值越大声音越尖（女生），值越小则变成男声,1.0是常规
            textToSpeech.setPitch(0.5f);
            //设定语速 ，默认1.0正常语速
            textToSpeech.setSpeechRate(1.5f);
            //朗读，注意这里三个参数的added in API level 4   四个参数的added in API level 21
            Bundle bundle = new Bundle();
            bundle.putInt(TextToSpeech.Engine.KEY_PARAM_STREAM, AudioManager.STREAM_NOTIFICATION);//设置音频通道
            textToSpeech.speak(editText.getText().toString(), TextToSpeech.QUEUE_FLUSH, bundle,"1");
        }
    }

    /**
     * 用来初始化TextToSpeech引擎
     * status:SUCCESS或ERROR这2个值
     * setLanguage设置语言，帮助文档里面写了有22种
     * TextToSpeech.LANG_MISSING_DATA：表示语言的数据丢失。
     * TextToSpeech.LANG_NOT_SUPPORTED:不支持
     */

    @Override
    public void onInit(int status) {
    
    
        if (status == TextToSpeech.SUCCESS){
    
    
            int result = textToSpeech.setLanguage(Locale.CHINA);
            if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED){
    
    
                Toast.makeText(this, "数据丢失或不支持", Toast.LENGTH_SHORT).show();
            }
        }
    }

    @Override
    protected void onStop() {
    
    
        super.onStop();
        textToSpeech.stop(); // 不管是否正在朗读TTS都被打断
        textToSpeech.shutdown(); // 关闭，释放资源
    }
}