android VoiceRecognition 语音识别并打印到列表上
2024-10-12 12:21:43
package com.example.wenandroid; import java.util.ArrayList;
import java.util.List; 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;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView; public class VoiceRecognizeDemo extends Activity implements OnClickListener {
private static final int VOICE_RECOGNITION_REQUEST_CODE=1234;
private ListView listview;
private Button btn; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.voicerecogenize);
listview=(ListView)findViewById(R.id.listview);
btn=(Button)findViewById(R.id.btn);
PackageManager pm=getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(
new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
if (activities.size() != 0) {
btn.setOnClickListener(this);
} else {
btn.setEnabled(false);
btn.setText("Recognizer not present");
} } @Override
public void onClick(View v) {
if(v.getId()==R.id.btn){
startVoiceRecognitionActivity();
} } private void startVoiceRecognitionActivity(){
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");
startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
} @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);
listview.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
matches));
} super.onActivityResult(requestCode, resultCode, data);
} }
界面只有一个listview和一个button。
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