android 语音识别对话功能,Android 自带语音识别功能
在Android 1.5 SDK中已经增强了语音识别功能,第三方经过Intent就能够简单的使用这个功能!下面作简要说明!java先看页面布局:androidandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" android:padding="5dip
在Android 1.5 SDK中已经增强了语音识别功能,第三方经过Intent就能够简单的使用这个功能!下面作简要说明!java
先看页面布局:android
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" android:padding="5dip">
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="语音识别" />
android:id="@+id/listView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#00000000">
说明:LinearLayout里面垂直放置了Button和ListView,经过Button的点击事件触发语音识别,而后把结果设置到ListView中。app
Activity中的代码以下:ide
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class RecognizerActivity extends Activity implements OnClickListener, OnItemClickListener {
private static final int VOICE_RECOGNITION_REQUEST_CODE = 131422;
private ListView mListView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mListView = (ListView) findViewById(R.id.listView1);
mListView.setOnItemClickListener(this);
((Button) findViewById(R.id.button1)).setOnClickListener(this);
}
@Override
public void onClick(View v) {
mListView.setAdapter(null);
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, "开始语音识别");
startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(this, "不能语音识别", Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && data != null) {
ArrayList results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
if (results != null) {
mListView.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, results));
Toast.makeText(this, results.toString(), Toast.LENGTH_SHORT).show();
super.onActivityResult(requestCode, resultCode, data);
}
}
}
@Override
public void onItemClick(AdapterView> parent, View view, int position,
long id) {
Toast.makeText(this, parent.getAdapter().getItem(position).toString(), Toast.LENGTH_SHORT).show();
}
}
说明:布局
onCreate:得到相关View的引用,并设置对应的事件处理;
onClick:清空ListView数据,并启动语音识别,若是系统没有Activity处理请求的Intent,以Toast形式提示;
onActivityResult:得到语音识别后的结果并作相关处理;
onItemClick:ListView中数据项点击事件处理------显示;
运行效果如图:this
多说一句:固然还有其它方法实现语音识别,但此方法比较简单!:)code
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