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发布于：2012-10-22 13:54
 | |  |  | 首先可以用以下代码测试你的机器是不是有语音识别功能：
[java]
PackageManager pm = getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(
new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
if (activities.size() != 0) {
/*Activity 存在*/
Toast.makeText(AndroidVoiceActivity.this, "Activity 存在", Toast.LENGTH_LONG).show();
} else {
/* Activity Not Found 未判断会抛出ActivityNotFoundException*/
Toast.makeText(AndroidVoiceActivity.this, "Activity 不存在", Toast.LENGTH_LONG).show();
} 简单的Activity：
[java]
package com.relin.voice;
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.Button;
import android.widget.Toast;
public class AndroidVoiceActivity extends Activity {
/** Called when the activity is first created. */
private static final int VOICE_RECOGNITION_REQUEST_CODE = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button)findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
try{
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "开始语音");
startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
}catch (Exception e) {
// TODO: handle exception
Toast.makeText(AndroidVoiceActivity.this, "ActivityNotFoundException", Toast.LENGTH_LONG).show();
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (requestCode == VOICE_RECOGNITION_REQUEST_CODE ;; resultCode == RESULT_OK) {
ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
String resultString = "";
for (int i = 0; i < result.size(); i++) {
resultString += result.get(i);
}
Toast.makeText(this, resultString, Toast.LENGTH_LONG).show();
}
super.onActivityResult(requestCode, resultCode, data);
}
}
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