AI 147247: am: CL 147243 Make the API sample check to see if there is anything installed to handle the recognition intent.

  Original author: jham
  Merged from: //branches/cupcake/...

Automated import of CL 147247

1 files changed, 14 insertions, 3 deletions

diff --git a/samples/ApiDemos/src/com/example/android/apis/app/VoiceRecognition.java b/samples/ApiDemos/src/com/example/android/apis/app/VoiceRecognition.java
index 1a4b5e4a0..3094afe0a 100644
--- a/samples/ApiDemos/src/com/example/android/apis/app/VoiceRecognition.java
+++ b/samples/ApiDemos/src/com/example/android/apis/app/VoiceRecognition.java
@@ -20,6 +20,8 @@ import com.example.android.apis.R;
 
 import android.app.Activity;
 import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.os.Bundle;
 import android.speech.RecognizerIntent;
 import android.view.View;
@@ -29,6 +31,7 @@ import android.widget.Button;
 import android.widget.ListView;
 
 import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Sample code that invokes the speech recognition intent API.
@@ -54,8 +57,16 @@ public class VoiceRecognition extends Activity implements OnClickListener {
         
         mList = (ListView) findViewById(R.id.list);
 
-        // Attach actions to buttons
-        speakButton.setOnClickListener(this);
+        // Check to see if a recognition activity is present
+        PackageManager pm = getPackageManager();
+        List<ResolveInfo> activities = pm.queryIntentActivities(
+                new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
+        if (activities.size() != 0) {
+            speakButton.setOnClickListener(this);
+        } else {
+            speakButton.setEnabled(false);
+            speakButton.setText("Recognizer not present");
+        }
     }
 
     /**
@@ -71,7 +82,6 @@ public class VoiceRecognition extends Activity implements OnClickListener {
      * Fire an intent to start the speech recognition activity.
      */
     private void startVoiceRecognitionActivity() {
-        //TODO Get these values from constants
         Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
         intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                 RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
@@ -85,6 +95,7 @@ public class VoiceRecognition extends Activity implements OnClickListener {
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {
+            // Fill the list view with the strings the recognizer thought it could have heard
             ArrayList<String> matches = data.getStringArrayListExtra(
                     RecognizerIntent.EXTRA_RESULTS);
             mList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,