[android-developers] but my button is not clickable and says -> "Recognizer not present"

Dear sir,

Good morning

i want to code on voice Recognization.I taken sample from android
developer site.
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/app/VoiceRecognition.html
but my button is not clickable and says -> "Recognizer not present"
Please give me complete guideline for voice Recognization.Please help
me clearly ..bez .....

Thanks,
Naveen

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