调用语音识别应用程序的小部件

问题描述

我正在尝试创建一个包含单个 ImageView 的小部件，单击该小部件会启动语音识别应用程序.我从来没有使用过小部件和待处理的意图，所以我很困惑:如何创建待处理的意图来启动语音识别活动?

我尝试过这样的事情，但它当然失败了:

我明白了！我需要两个包裹在两个待处理意图中的常规意图，如下所示:

//这个意图指向应该处理结果的活动Intent activityIntent = new Intent(context, ResultsActivity.class);//这个意图包装了结果活动意图PendingIntent 结果PendingIntent = PendingIntent.getActivity(context, 0, activityIntent, 0);//这个意图调用语音识别意图 voiceIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);voiceIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "语音识别演示");voiceIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, resultsPendingIntent);//这个意图包装了语音识别意图PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, voiceIntent, 0);rv.setOnClickPendingIntent(R.id.btn, pendingIntent);

I'm trying to create a widget that contains a single ImageView which, when clicked, starts speech recognition application. I've never worked with widgets and pending intents, so I'm confused: how to create a pending intent for starting speech recognition activity?

I tried with something like this, but it, of course, fails:

   Intent intent = new Intent();
   Intent voiceIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
   voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
     RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
   voiceIntent.putExtra(RecognizerIntent.EXTRA_PROMPT,
     "Speech recognition demo");
   voiceIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
   intent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, voiceIntent);
   PendingIntent pendingIntent = PendingIntent.getActivity(context, 0,
     intent, 0);
   RemoteViews views = new RemoteViews(context.getPackageName(),
     R.layout.main);
   views.setOnClickPendingIntent(R.id.button, pendingIntent);

I got it! I needed two regular intents wrapped in two pending intents, like this:

// this intent points to activity that should handle results
Intent activityIntent = new Intent(context, ResultsActivity.class);
// this intent wraps results activity intent
PendingIntent resultsPendingIntent = PendingIntent.getActivity(context, 0, activityIntent, 0);

// this intent calls the speech recognition
Intent voiceIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
voiceIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");
voiceIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
voiceIntent.putExtra(RecognizerIntent.EXTRA_RESULTS_PENDINGINTENT, resultsPendingIntent);

// this intent wraps voice recognition intent
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, voiceIntent, 0);
rv.setOnClickPendingIntent(R.id.btn, pendingIntent);

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