安卓语音识别结果对话框不会显示

Question

我正在安卓应用程序中实现语音识别。但是在我与手机通话后，应用程序向我显示主活动（我正在从不同的活动启动语音识别意图），并且对话框女巫选项可供选择不会显示。您可以在下面找到我的代码。

public class AddFoood extends Activity {
private static final int REQUEST_CODE = 1234;
Button voice;
Dialog match_text_dialog;
ArrayList<String> matches;
ListView textlist;
String SPEACH_RESULT;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_foood);
    getActionBar().setTitle("Add Food");
    voice = (Button)findViewById(R.id.voiceButton);
    voice.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(isConnected()){
                Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
                //intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                        //RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
                intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");
                intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 15);
                startActivityForResult(intent,REQUEST_CODE);
            }else {
                Toast.makeText(getApplicationContext(),"No internet connection",Toast.LENGTH_SHORT).show();
            }
        }
    });
}
public  boolean isConnected()
{
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo net = cm.getActiveNetworkInfo();
    if (net!=null && net.isAvailable() && net.isConnected()) {
        return true;
    } else {
        return false;
    }
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
        match_text_dialog = new Dialog(AddFoood.this);
        match_text_dialog.setContentView(R.layout.dialog_matches_frag);
        match_text_dialog.setTitle("Select Matching Text");
        textlist = (ListView)match_text_dialog.findViewById(R.id.list);
        matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

        ArrayAdapter<String> adapter =    new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, matches);
        textlist.setAdapter(adapter);
        textlist.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {
                SPEACH_RESULT = matches.get(position);
                match_text_dialog.hide();
            }
        });
        match_text_dialog.show();
    }
}

Answer 1

不能使用 RecognizerIntent.EXTRA_LANGUAGE_MODEL 指定语言

您应该改用RecognizerIntent.EXTRA_LANGUAGE。按如下方式修改代码：

//Specify language
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "en-US");
// Specify language model
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);