我试试这段代码PackageManagerpm=getPackageManager();Listactivities=pm.queryIntentActivities(newIntent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH),0);if(activities.size()!=0){speakButton.setOnClickListener(this);}else{speakButton.setEnabled(false);speakButton.setText("Recognizernotpresent");}但结果是Recognizer