Android开发之语音识别

2.调用Google原生语音识别

@Override

public void onClick(View v) {

//开启语音识别功能

Intent intent = new Intent(

RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

//设置模式，这里设置成自由模式

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

//提示语音开始文字

intent.putExtra(RecognizerIntent.EXTRA_PROMPT,“Please start your voice”);

//开始进行语音识别，这里先检测手机(模拟器)是否支持语音识别并且捕获异常

try {

startActivityForResult(intent, RESULT_SPEECH);

txtText.setText(“”);

} catch (ActivityNotFoundException a) {

Toast t = Toast.makeText(getApplicationContext(),

“Opps! Your device doesn’t support Speech to Text”,

Toast.LENGTH_SHORT);

t.show();

}

}

});

3.使用onActivityResult接收返回的结果

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

switch (requestCode) {

case RESULT_SPEECH: {

if (resultCode == RESULT_OK && data != null) {

ArrayList text = data

.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

//这里集合列表中第一个值为匹配度最高的值

txtText.setText(text.get(0));

}

break;

}

}

}

完整代码

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1.MainActivity.java代码

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.content.ActivityNotFoundException;

import android.content.Intent;

import android.speech.RecognizerIntent;