Android实现自动朗读功能(TTS)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical">

    <EditText
        android:id="@+id/input_text"
        android:layout_marginTop="20dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <LinearLayout
        android:layout_marginTop="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <Button
            android:id="@+id/speech"
            android:text="Speech"
            android:layout_width="wrap_content"
            android:layout_weight="1"
            android:layout_height="wrap_content"/>

        <Button
            android:id="@+id/record"
            android:text="Record"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>

    </LinearLayout>

</LinearLayout>

public class SpeechActivity extends AppCompatActivity {

    private EditText input;
    private Button speech,record;

    private TextToSpeech textToSpeech;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_speech);

        textToSpeech = new TextToSpeech(this, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if (status == textToSpeech.SUCCESS) {
                    int result = textToSpeech.setLanguage(Locale.CHINA);
                    if (result != TextToSpeech.LANG_COUNTRY_AVAILABLE
                            && result != TextToSpeech.LANG_AVAILABLE){
                        Toast.makeText(SpeechActivity.this, "TTS暂时不支持这种语音的朗读！",
                                Toast.LENGTH_SHORT).show();
                    }
                }
            }
        });

        input = (EditText) findViewById(R.id.input_text);
        speech = (Button) findViewById(R.id.speech);
        record = (Button) findViewById(R.id.record);

        speech.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                textToSpeech.speak(input.getText().toString(),
                        TextToSpeech.QUEUE_ADD, null);
            }
        });

        record.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String inputText = input.getText().toString();
                HashMap<String, String> myHashRender = new HashMap<>();
                myHashRender.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, inputText);
                textToSpeech.synthesizeToFile(inputText, myHashRender,
                        "/mnt/sdcard/my_recorder_audios/sound.wav");
                Toast.makeText(SpeechActivity.this, "声音记录成功。", Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    protected void onDestroy() {
        if (textToSpeech != null)
            textToSpeech.shutdown();
        super.onDestroy();
    }
}

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