queryIntentActivities（）数据额外意向 [英] queryIntentActivities() data Intent extras
问题描述
我的目标是让现有的TTS语音引擎和它们各自的可用语言的。我能顺利拿到可用的引擎具有以下code：
软件包管理系统PM = getPackageManager（）; 意图ttsIntent =新的Intent（）;
ttsIntent.setAction（TextToSpeech.Engine.ACTION_CHECK_TTS_DATA）;
// ttsIntent.getStringArrayListExtra（TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES）; ArrayList的＆LT;串GT; engineInfo =新的ArrayList＆LT;串GT;（）; 清单＆LT; ResolveInfo＆GT;清单= pm.queryIntentActivities（ttsIntent，
PackageManager.GET_META_DATA）; 对于（ResolveInfo APPINFO：名单）{
engineInfo.add（appInfo.activityInfo.applicationInfo.packageName）;
engineInfo.add（appInfo.activityInfo.applicationInfo.loadLabel（下午）
的ToString（））;
}
上面的注释行请求的意图的额外数据。我已经做了很多的搜索，但找不到任何的 queryIntentActivities例子（）以这种方式使用getExtra'或'putExtra。
我可以假设，因此，这是不是一种选择，我需要回去看了一些基础知识的地方，为什么这是不可能的！？
如果我做任何试图检索数据，我得到一个空指针，即使我检查它是否！= NULL 这是一个有点奇怪？
appInfo.activityInfo.applicationInfo.metaData.getEtcEtc ...
任何帮助将是非常美联社preciated，先谢谢了。
postPutEXTRA： API级别是9这样的 getEngines（）是不提供给我的，尽管这会涉及一个初始化对象TTS每个人，所以不理想呢。
postPutEDIT：我试过循环内的以下提取相关的UID，但它并没有为所有，但我测试语音引擎的工作之一。
ApplicationInfo AI = NULL;
尝试{
AI = pm.getApplicationInfo（appInfo.activityInfo.applicationInfo.packageName，0）;
}赶上（ē的NameNotFoundException）{
e.printStackTrace（）;
返回;
} 的String [] =声音pm.getPackagesForUid（ai.uid）;
我解决不了这个问题的具体名称，但我没有得到我想要的可用语音引擎和他们的语言在设备上的信息，而用户的交互，以下列方式：
私人无效getEngines（）{ 意图ttsIntent =新的Intent（）;
ttsIntent.setAction（TextToSpeech.Engine.ACTION_CHECK_TTS_DATA）; ArrayList的＆LT;串GT; engineInfo =新的ArrayList＆LT;串GT;（）; 软件包管理系统下午= getPackageManager（）; 清单＆LT; ResolveInfo＆GT;清单= pm.queryIntentActivities（ttsIntent，
PackageManager.GET_META_DATA）; 对于（ResolveInfo APPINFO：名单）{
engineInfo.add（appInfo.activityInfo.applicationInfo.packageName）; ttsIntent
.setPackage（appInfo.activityInfo.applicationInfo.packageName）;
ttsIntent
.getStringArrayListExtra（TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES）; startActivityForResult（ttsIntent，33）; } 如果（DE.BUG）{
MyLog.d（engineInfo：+ engineInfo.size（）+：
+ engineInfo.toString（））;
}
}@覆盖
公共无效的onActivityResult（INT申请code，INT结果code，意图数据）{ 如果（要求code == 33安培;＆放大器;数据！= NULL）{ ArrayList的＆LT;串GT;用=数据
.getStringArrayListExtra（availableVoices）; 如果（DE.BUG）{
MyLog.i（声音：+ available.toString（））;
}
}
}
我留在我的自定义日志类/方法来显示在那里我捕获数据。您可以重新排列上面把所有的数据整合到一个或多个全局数组列表（S）。
My aim is to get the available TTS voice engines and their respective available languages. I can successfully get the available engines with the following code:
PackageManager pm = getPackageManager();
Intent ttsIntent = new Intent();
ttsIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
// ttsIntent.getStringArrayListExtra(TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES);
ArrayList<String> engineInfo = new ArrayList<String>();
List<ResolveInfo> list = pm.queryIntentActivities(ttsIntent,
PackageManager.GET_META_DATA);
for (ResolveInfo appInfo : list) {
engineInfo.add(appInfo.activityInfo.applicationInfo.packageName);
engineInfo.add(appInfo.activityInfo.applicationInfo.loadLabel(pm)
.toString());
}
The commented out line above requests a data extra for the intent. I've done many searches, but can find no examples of queryIntentActivities() using 'getExtra' or 'putExtra' in this way.
Can I therefore assume, that this isn't an option and I need to go back to read some basics somewhere of why this isn't possible!?
If I make any attempt to retrieve the data, I get a null pointer, even if I'm checking if it's !=null which is a little odd?
appInfo.activityInfo.applicationInfo.metaData.getEtcEtc...
Any help would be much appreciated, thanks in advance.
postPutEXTRA: API level is 9 so getEngines() isn't available to me, although that would involve initialising a tts object for each one, so not ideal anyway.
postPutEDIT: I tried the following within the loop to extract associated uid's, but it didn't work for all but one of the voice engines I tested.
ApplicationInfo ai = null;
try {
ai = pm.getApplicationInfo(appInfo.activityInfo.applicationInfo.packageName, 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
return;
}
String[] voices = pm.getPackagesForUid(ai.uid);
I couldn't solve the specific title of this question, but I did get the information I wanted of the available voice engines and their languages on the device, without user interaction, in the following way:
private void getEngines() {
Intent ttsIntent = new Intent();
ttsIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
ArrayList<String> engineInfo = new ArrayList<String>();
PackageManager pm = getPackageManager();
List<ResolveInfo> list = pm.queryIntentActivities(ttsIntent,
PackageManager.GET_META_DATA);
for (ResolveInfo appInfo : list) {
engineInfo.add(appInfo.activityInfo.applicationInfo.packageName);
ttsIntent
.setPackage(appInfo.activityInfo.applicationInfo.packageName);
ttsIntent
.getStringArrayListExtra(TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES);
startActivityForResult(ttsIntent, 33);
}
if (DE.BUG) {
MyLog.d("engineInfo: " + engineInfo.size() + " : "
+ engineInfo.toString());
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 33 && data != null) {
ArrayList<String> available = data
.getStringArrayListExtra("availableVoices");
if (DE.BUG) {
MyLog.i("Voices: " + available.toString());
}
}
}
I've left in my custom logging class/method to show where I'm capturing the data. You can rearrange the above to put all of the data into one or more global array list(s).
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