Android TextToSpeech Example

TextToSpeech class is responsible to convert text into speech. It provides a lot of methods to control the speech such as setSpeedRate(), setPitch() etc.

In this example, we are going to see the android texttospeech example with speed and pitch option.

activity_main.xml

Drag 2 textviews, 1 edittext, 1 spinner and 1 button for the layout. Now the activity_main.xml file will look like this:

File: activity_main.xml

1. <RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
2.     xmlns:tools="http://schemas.android.com/tools"  
3.     android:layout_width="match_parent"  
4.     android:layout_height="match_parent"  
5.     tools:context=".MainActivity" >  
6.   
7.     <EditText  
8.         android:id="@+id/editText1"  
9.         android:layout_width="wrap_content"  
10.         android:layout_height="wrap_content"  
11.         android:layout_alignBaseline="@+id/textView1"  
12.         android:layout_alignBottom="@+id/textView1"  
13.         android:layout_alignParentRight="true"  
14.         android:layout_marginRight="58dp"  
15.         android:ems="10" >  
16.   
17.         <requestFocus />  
18.     </EditText>  
19.   
20.     <Button  
21.         android:id="@+id/button1"  
22.         android:layout_width="wrap_content"  
23.         android:layout_height="wrap_content"  
24.         android:layout_below="@+id/editText1"  
25.         android:layout_centerHorizontal="true"  
26.         android:layout_marginTop="28dp"  
27.         android:text="Speak" />  
28.   
29.     <TextView  
30.         android:id="@+id/textView2"  
31.         android:layout_width="wrap_content"  
32.         android:layout_height="wrap_content"  
33.         android:layout_below="@+id/button1"  
34.         android:layout_marginTop="62dp"  
35.         android:layout_toLeftOf="@+id/editText1"  
36.         android:text="Speed:" />  
37.   
38.     <TextView  
39.         android:id="@+id/textView1"  
40.         android:layout_width="wrap_content"  
41.         android:layout_height="wrap_content"  
42.         android:layout_alignLeft="@+id/textView2"  
43.         android:layout_alignParentTop="true"  
44.         android:layout_marginTop="42dp"  
45.         android:text="Text:" />  
46.   
47.     <Spinner  
48.         android:id="@+id/spinner1"  
49.         android:layout_width="200dp"  
50.         android:layout_height="wrap_content"  
51.         android:layout_below="@+id/button1"  
52.         android:layout_centerHorizontal="true"  
53.         android:layout_marginTop="43dp" />  
54.   
55. </RelativeLayout>  

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Activity class

Let's see the code to speak the given text.

File: MainActivity.java

1. package com.example.texttospeechspeed;  
2.   
3. import android.os.Bundle;  
4. import android.app.Activity;  
5. import android.view.Menu;  
6.   
7. import java.util.ArrayList;  
8. import java.util.List;  
9. import java.util.Locale;  
10. import android.speech.tts.TextToSpeech;  
11. import android.util.Log;  
12. import android.view.View;  
13. import android.widget.AdapterView;  
14. import android.widget.AdapterView.OnItemSelectedListener;  
15. import android.widget.ArrayAdapter;  
16. import android.widget.Button;  
17. import android.widget.EditText;  
18. import android.widget.Spinner;  
19. import android.widget.Toast;  
20. public class MainActivity extends Activity implements  
21. TextToSpeech.OnInitListener,OnItemSelectedListener {  
22. /** Called when the activity is first created. */  
23.   
24. private TextToSpeech tts;  
25. private Button buttonSpeak;  
26. private EditText editText;  
27. private Spinner speedSpinner,pitchSpinner;  
28.   
29. private static String speed="Normal";  
30. @Override  
31. public void onCreate(Bundle savedInstanceState) {  
32. super.onCreate(savedInstanceState);  
33. setContentView(R.layout.activity_main);  
34.   
35. tts = new TextToSpeech(this, this);  
36. buttonSpeak = (Button) findViewById(R.id.button1);  
37. editText = (EditText) findViewById(R.id.editText1);  
38. speedSpinner = (Spinner) findViewById(R.id.spinner1);  
39.   
40. //load data in spinner  
41. loadSpinnerData();  
42. speedSpinner.setOnItemSelectedListener(this);  
43.   
44. //button click event  
45. buttonSpeak.setOnClickListener(new View.OnClickListener() {  
46.     @Override  
47.     public void onClick(View arg0) {  
48.         setSpeed();  
49.         speakOut();  
50.     }  
51.   
52. });  
53. }  
54.   
55.   
56. @Override  
57. public void onInit(int status) {  
58.   
59. if (status == TextToSpeech.SUCCESS) {  
60.   
61.     int result = tts.setLanguage(Locale.US);  
62.   
63.     if (result == TextToSpeech.LANG_MISSING_DATA  
64.             || result == TextToSpeech.LANG_NOT_SUPPORTED) {  
65.         Log.e("TTS", "This Language is not supported");  
66.     } else {  
67.         buttonSpeak.setEnabled(true);  
68.         speakOut();  
69.     }  
70.   
71. } else { Log.e("TTS", "Initilization Failed!");}  
72.   
73. }  
74.   
75. @Override  
76. public void onDestroy() {  
77. // Don't forget to shutdown tts!  
78. if (tts != null) {  
79.     tts.stop();  
80.     tts.shutdown();  
81. }  
82. super.onDestroy();  
83. }  
84.   
85. private void setSpeed(){  
86.     if(speed.equals("Very Slow")){  
87.         tts.setSpeechRate(0.1f);  
88.     }  
89.     if(speed.equals("Slow")){  
90.         tts.setSpeechRate(0.5f);  
91.     }  
92.     if(speed.equals("Normal")){  
93.         tts.setSpeechRate(1.0f);//default 1.0  
94.     }  
95.     if(speed.equals("Fast")){  
96.         tts.setSpeechRate(1.5f);  
97.     }  
98.     if(speed.equals("Very Fast")){  
99.         tts.setSpeechRate(2.0f);  
100.     }  
101.     //for setting pitch you may call   
102.     //tts.setPitch(1.0f);//default 1.0  
103. }  
104.   
105. private void speakOut() {  
106. String text = editText.getText().toString();  
107. tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);  
108. }  
109.   
110. private void loadSpinnerData() {  
111.     //Data for speed Spinner  
112.     List<String> lables = new ArrayList<String>();  
113.     lables.add("Very Slow");  
114.     lables.add("Slow");  
115.     lables.add("Normal");  
116.     lables.add("Fast");  
117.     lables.add("Very Fast");  
118.       
119.     // Creating adapter for spinner  
120.     ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, lables);  
121.   
122.     // Drop down layout style - list view with radio button  
123.     dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  
124.   
125.     // attaching data adapter to spinner  
126.     speedSpinner.setAdapter(dataAdapter);  
127.       
128.   }  
129.   
130. @Override  
131. public void onItemSelected(AdapterView<?> parent, View view, int position,  
132.         long id) {  
133.     // On selecting a spinner item  
134.     speed = parent.getItemAtPosition(position).toString();  
135.   
136.     Toast.makeText(parent.getContext(), "You selected: " + speed,  
137.             Toast.LENGTH_LONG).show();  
138. }  
139.   
140. @Override  
141. public void onNothingSelected(AdapterView<?> arg0) {  
142.      
143. }  
144.   
145.   
146. @Override  
147. public boolean onCreateOptionsMenu(Menu menu) {  
148.         // Inflate the menu; this adds items to the action bar if it is present.  
149.         getMenuInflater().inflate(R.menu.activity_main, menu);  
150.         return true;  
151. }  
152.   
153. }  

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You need to run it on the Real Device (e.g. Mobile) to test the application.