This tutorial taken from androidhive website.
public class SpeechToTextDemo extends AppCompatActivity {
private final int SPEECH_RECOGNITION_CODE = 1;
private TextView txtOutput;
private ImageButton btnMicrophone;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_speech_to_text_demo);
txtOutput = (TextView) findViewById(R.id.txt_output);
btnMicrophone = (ImageButton) findViewById(R.id.btn_mic);
btnMicrophone.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startSpeechToText();
}
});
}
private void startSpeechToText() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_PROMPT,
"Speak something...");
try {
startActivityForResult(intent, SPEECH_RECOGNITION_CODE);
} catch (ActivityNotFoundException a) {
Toast.makeText(getApplicationContext(),
"Sorry! Speech recognition is not supported in this device.",
Toast.LENGTH_SHORT).show();
}
}
/**
* Callback for speech recognition activity
* */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case SPEECH_RECOGNITION_CODE: {
if (resultCode == RESULT_OK && null != data) {
ArrayList<String> result = data
.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
String text = result.get(0);
txtOutput.setText(text);
}
break;
}
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_speech_to_text_demo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@color/colorAccent"
tools:context="sciens.com.praticalsdemo.SpeechToTextDemo">
<TextView
android:id="@+id/txt_output"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="100dp"
android:textColor="@color/white"
android:textSize="26dp"
android:textStyle="normal" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="60dp"
android:gravity="center"
android:orientation="vertical" >
<ImageButton
android:id="@+id/btn_mic"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="@null"
android:scaleType="centerCrop"
android:src="@drawable/mic" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Speech to text using Google API"
android:textColor="@color/white"
android:textSize="15dp"
android:textStyle="normal" />
</LinearLayout>
</RelativeLayout>
add internet permission in manifest file.
Output: Not available.