Android 9 Development Cookbook - Third Edition

How to do it...

We'll start by adding a Speak Now (or microphone) button to the layout, then we'll add the necessary code to call the speech recognizer. Open activity_main.xml and follow these steps:

1. Replace the existing TextView with the following XML:

<TextView    android:id="@+id/textView"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="Hello World!"    app:layout_constraintLeft_toLeftOf="parent"    app:layout_constraintRight_toRightOf="parent"    app:layout_constraintTop_toTopOf="parent" /><ImageButton    android:id="@+id/imageButton"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:src="@android:drawable/ic_btn_speak_now"    android:onClick="speakNow"    app:layout_constraintBottom_toBottomOf= ...