Google Glass: Card not being displayed - google-glass

Question

Need help to display a sample card in the glass timeline(refer image). All i need is to launch the card when one taps when "ok glass" is displayed and scroll to view the card(image 2), the same via voice command also does not work.
I tried launching the same activity via adb shell it works perfectly fine, also i added an intent filter with MAIN/LAUNCHER category to the activity - it runs. I referred this link for this POC but nothing like the image is being displayed. Please help as to where am i going wrong - TIA
Activity:
package de.androidzeitgeist.glass.helloworld.immersion;
import android.app.Activity;
import android.os.Bundle;
import com.google.android.glass.app.Card;
public class HelloWorldActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Card card = new Card(this);
card.setText("Hello world!");
card.setFootnote("android.com");
setContentView(cardroid.getView());
}
}
Manifest File:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.androidzeitgeist.glass.helloworld.immersion"
android:versionCode="1"
android:versionName="1.0" >
<application
android:allowBackup="true"
android:icon="#drawable/helloworld_icon"
android:label="#string/app_name" >
<activity
android:name="de.androidzeitgeist.glass.helloworld.immersion.HelloWorldActivity"
android:icon="#drawable/helloworld_icon"
android:label="#string/app_name" >
<intent-filter>
<action android:name="com.google.android.glass.action.VOICE_TRIGGER" />
</intent-filter>
<meta-data
android:name="com.google.android.glass.VoiceTrigger"
android:resource="#xml/voice_trigger" />
</activity>
</application>
<uses-sdk
android:minSdkVersion="19"
android:targetSdkVersion="19" />
</manifest>
voice_trigger.xml
<?xml version="1.0" encoding="utf-8"?>
<trigger keyword="#string/show_hello_word" />
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">HelloWorldImmersion</string>
<string name="hello_world"></string>
<string name="show_hello_word">show hello world</string>
</resources>

Answer 1

If you are using an unregistered voice command, your manifest.xml must include
<uses-permission android:name="com.google.android.glass.permission.DEVELOPMENT" />
See https://developers.google.com/glass/develop/gdk/starting-glassware for more details about using registered commands and unlisted commands and Why is my voice command missing from the ok glass menu in XE16? for some clarification and examples.