标签:broadcastreceiver google-voice-search java android
除非我专门设置软件包名称,否则以下Ordered Broadcast为什么在Android Oreo中失败?
final Intent vrIntent = new Intent(RecognizerIntent.ACTION_GET_LANGUAGE_DETAILS);
// Setting the package it will work. Omitting, it will fail
// vrIntent.setPackage("com.google.android.googlequicksearchbox");
getContext().sendOrderedBroadcast(vrIntent, null, new BroadcastReceiver() {
@Override
public void onReceive(final Context context, final Intent intent) {
// final Bundle bundle = intent.getExtras();
final Bundle bundle = getResultExtras(true);
if (bundle != null) {
if (bundle.containsKey(RecognizerIntent.EXTRA_SUPPORTED_LANGUAGES)) {
Log.i("TAG", "onReceive: EXTRA_SUPPORTED_LANGUAGES present");
final ArrayList<String> vrStringLocales = bundle.getStringArrayList(
RecognizerIntent.EXTRA_SUPPORTED_LANGUAGES);
Log.i("TAG", "onReceive: EXTRA_SUPPORTED_LANGUAGES size: " + vrStringLocales.size());
} else {
Log.w("TAG", "onReceive: missing EXTRA_SUPPORTED_LANGUAGES");
}
} else {
Log.w("TAG", "onReceive: Bundle null");
}
}, null, 1234, null, null);
如果未设置包名称,则将缺少EXTRA_SUPPORTED_LANGUAGES.
我最近在asked a bounty question上未设置软件包名称的“旧版代码”在Oreo中失败,但在以前的Android版本上可以成功运行.
检查了所有的behavioural changes in API 26之后,我看不到任何可以解释的信息.
任何人都可以阐明可能的原因吗?
注意:示例代码和问题假定设备已安装Google’s ‘Now’应用程序以提供RecognitionService
解决方法:
好的,我重现了问题. 1234结果代码是一个红色鲱鱼-似乎RecognizerIntent背后的过程未设置结果代码,因此您获得了初始代码.
但是,您的确在Android 8.1(可能是8.0)上收到此错误消息:
W/BroadcastQueue: Background execution not allowed: receiving Intent { act=android.speech.action.GET_LANGUAGE_DETAILS flg=0x10 } to com.google.android.googlequicksearchbox/com.google.android.voicesearch.intentapi.IntentApiReceiver
那是“您在清单中注册了一个接收器,并且由于您处于后台状态,我们不会广播给您”错误.
这个经过严格测试的sendImplicitOrderedBroadcast()方法可解决此问题,同时原则上保持接收者的顺序(优先级从高到低):
private void sendImplicitOrderedBroadcast(Intent i, String receiverPermission,
BroadcastReceiver resultReceiver,
Handler scheduler, int initialCode,
String initialData,
Bundle initialExtras) {
PackageManager pm=getPackageManager();
List<ResolveInfo> matches=pm.queryBroadcastReceivers(i, 0);
Collections.sort(matches,
(left, right) -> right.filter.getPriority()-left.filter.getPriority());
for (ResolveInfo resolveInfo : matches) {
Intent explicit=new Intent(i);
ComponentName cn=
new ComponentName(resolveInfo.activityInfo.applicationInfo.packageName,
resolveInfo.activityInfo.name);
explicit.setComponent(cn);
sendOrderedBroadcast(explicit, receiverPermission, resultReceiver,
scheduler, initialCode, initialData, initialExtras);
}
}
我选择了filing an issue.
标签:broadcastreceiver,google-voice-search,java,android 来源: https://codeday.me/bug/20191109/2013096.html
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