Introduction

Android is one of the most popular operating systems for mobile. In this article, I will show you how to create a Voice Search android application using an android studio.
Requirements
Steps should be followed
These steps create a Voice Search Android application using Android studio and I have included the source code below.
Step 1
Open Android Studio and Start a New Android Studio Project.
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Step 2
You can choose your application name and choose where your project is stored on the location. If you wish to use C++ for coding the project, mark the "Include C++ support", and click the "Next" button.
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Now, select the version of Android and select the target Android devices.
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Step 3
Now, add the activity and click the "Next" button.
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Add Activity name and click "Finish".
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Step 4
Go to activity_main.xml, This XML file contains the designing code for an Android app in the activity_main.xml;
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The XML code given below.
  1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3. xmlns:tools="http://schemas.android.com/tools"
  4. android:layout_width="match_parent"
  5. android:layout_height="match_parent"
  6. android:orientation="vertical" >
  8. <TextView
  9. android:id="@+id/textView1"
  10. android:layout_width="fill_parent"
  11. android:layout_height="wrap_content"
  12. android:paddingBottom="4dip"
  13. android:text="Click the button " />
  15. <EditText
  16. android:id="@+id/editText1"
  17. android:layout_width="match_parent"
  18. android:layout_height="wrap_content"
  19. android:ems="10" >
  21. <requestFocus />
  22. </EditText>
  24. <Button android:id="@+id/speakButton"
  25. android:layout_width="fill_parent"
  26. android:onClick="speakButtonClicked"
  27. android:layout_height="wrap_content"
  28. android:text="Click here!" />
  30. </LinearLayout>
Step 5
Go to Main Activity.java, This Java program is the backend language for an Android.
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The java code is given below
  1. package abu.myapplication;
  2. import android.content.Intent;
  3. import android.content.pm.PackageManager;
  4. import android.content.pm.ResolveInfo;
  5. import android.speech.RecognizerIntent;
  6. import android.support.v7.app.AppCompatActivity;
  7. import android.os.Bundle;
  8. import android.text.Editable;
  9. import android.text.TextWatcher;
  10. import android.view.View;
  11. import android.widget.AdapterView;
  12. import android.widget.ArrayAdapter;
  13. import android.widget.Button;
  14. import android.widget.EditText;
  15. import android.widget.ListView;
  16. import android.widget.TextView;
  17. import android.widget.Toast;
  18. import java.util.ArrayList;
  19. import java.util.List;
  20. public class MainActivity extends AppCompatActivity
  21. {
  22. EditText ed;
  23. TextView tv;
  24. private static final int REQUEST_CODE = 1234;
  25. Button speak;@
  26. Override
  27. protected void onCreate(Bundle savedInstanceState)
  28. {
  29. super.onCreate(savedInstanceState);
  30. setContentView(R.layout.activity_main);
  31. final Button speak = (Button) findViewById(R.id.speakButton);
  32. ed = (EditText) this.findViewById(R.id.editText1);
  33. tv = (TextView) this.findViewById(R.id.textView1);
  34. // Disable button if no recognition service is present
  35. PackageManager pm = getPackageManager();
  36. List < ResolveInfo > activities = pm.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
  37. if (activities.size() == 0)
  38. {
  39. speak.setEnabled(false);
  40. speak.setText("Recognizer not present");
  41. }
  42. ed.addTextChangedListener(new TextWatcher()
  43. {@
  44. Override
  45. public void beforeTextChanged(CharSequence s, int start, int count, int after)
  46. {
  47. // TODO Auto-generated method stub
  48. }@
  49. Override
  50. public void onTextChanged(CharSequence s, int start, int before, int count)
  51. {
  52. // TODO Auto-generated method stub
  53. }@
  54. Override
  55. public void afterTextChanged(Editable s)
  56. {
  57. // TODO Auto-generated method stub
  58. speak.setEnabled(false);
  59. }
  60. });
  61. }
  62. /**
  63. * Handle the action of the button being clicked
  64. */
  65. public void speakButtonClicked(View v)
  66. {
  67. startVoiceRecognitionActivity();
  68. }
  69. /**
  70. * Fire an intent to start the voice recognition activity.
  71. */
  72. private void startVoiceRecognitionActivity()
  73. {
  74. Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
  75. intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
  76. intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Voice searching...");
  77. startActivityForResult(intent, REQUEST_CODE);
  78. }
  79. /**
  80. * Handle the results from the voice recognition activity.
  81. */
  82. @
  83. Override
  84. protected void onActivityResult(int requestCode, int resultCode, Intent data)
  85. {
  86. if (requestCode == REQUEST_CODE && resultCode == RESULT_OK)
  87. {
  88. // Populate the wordsList with the String values the recognition engine thought it heard
  89. final ArrayList < String > matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
  90. if (!matches.isEmpty())
  91. {
  92. String Query = matches.get(0);
  93. ed.setText(Query);
  94. speak.setEnabled(false);
  95. }
  96. }
  97. super.onActivityResult(requestCode, resultCode, data);
  98. }
  100. }
Step 6
Now, go to the menu bar and click make a project or press ctrl+f9. To debug the error.
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Step 7
Then click Run button or press shift+f10 To run the project. And choose the virtual machine and click OK.
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Conclusion
We have successfully created a Voice Search Android application using the Android studio.
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