学步园

布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
	<TextView  
	    android:layout_width="fill_parent" 
	    android:layout_height="wrap_content" 
	    android:text="实现语音识别效果"
	    android:id="@+id/tvTitle"
    />
    <Button  
	    android:layout_width="fill_parent" 
	    android:layout_height="wrap_content" 
	    android:text="实现语音识别效果"
	    android:id="@+id/btn"
    />
      <ListView  
	    android:layout_width="fill_parent" 
	    android:layout_height="wrap_content" 
	    android:id="@+id/listview"
    />
</LinearLayout>

源代码：

package app.imo;

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 SpeakActivity extends Activity implements OnClickListener{
	private Button btn ;
	private ListView listView;
	private static final int REQUEST_CODE = 1;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.speak);
        
        btn = (Button) this.findViewById(R.id.btn);
        listView = (ListView) this.findViewById(R.id.listview);
        
        /**
         * 下面是判断当前手机是否支持语音识别功能
         */
        PackageManager pm = getPackageManager();
        List<ResolveInfo> list = pm.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
        if(list.size()!=0)
        {
        	btn.setOnClickListener(this);
        }else{
        	btn.setEnabled(false);
        	btn.setText("当前语音识别设备不可用...");
        }
        
    }

	public void onClick(View v) {
		if(v.getId()==R.id.btn)
		{
			/**
			 * 启动手机内置的语言识别功能
			 */
			Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
			intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);  //设置为当前手机的语言类型
			intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "请说话，我识别");//出现语言识别界面上面需要显示的提示
			startActivityForResult(intent,REQUEST_CODE);
		}
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		/**
		 * 回调获取从谷歌得到的数据
		 */
		if(requestCode==REQUEST_CODE&&resultCode==RESULT_OK)
		{
			
			List<String> list = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
			listView.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,list)); //把数据显示在listview中
		}
		super.onActivityResult(requestCode, resultCode, data);
	}
	
	
	

}