在运行时检查BroadcastReceiver是否在清单文件中声明？

Question

有没有一种方法在运行时检查清单中声明的BroadcastReceiver？

- TacB0sS

Answer 1

代码将类似于这样，在Activity中：

// Query all packages that have the BroadcastReceivers...
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
PackageManager pm = getPackageManager();
final List<ResolveInfo> listPkgs = pm.queryBroadcast(mainIntent, 0);
if (listPkgs != null && listPkgs.size() > 0){
   for(ResolveInfo resInfo : listPkgs){
       // Now resInfo will contain the list of packages that has receivers...
   }
}

- t0mm13b

Answer 2

使用 PackageManager，您可以使用 queryBroadcastReceivers() 查找哪些应用程序将响应特定的 Intent，并使用 getInstalledPackages() 查找每个包安装的接收器。

- CommonsWare

Answer 3

谢谢，但这不是我的意图... 我想知道在运行时是否声明了特定的接收器，并通过以下方式实现：

    private <Receiver extends CyborgReceiver<?>> boolean checkIfBroadcastReceiverIsRegisteredInManifest(Class<Receiver> receiverType) {
    PackageManager pm = application.getPackageManager();
    try {
        ActivityInfo info = pm.getReceiverInfo(new ComponentName(application, receiverType), PackageManager.GET_RECEIVERS);
        return info.enabled;
    } catch (NameNotFoundException e) {
        return false;
    }
}

- TacB0sS

---

CyborgReceiver扩展了BroadcastReceiver，关于过滤器，我真的不记得是什么情况了。 - TacB0sS

我认为这与监控应用程序中的呼叫事件有关。 - TacB0sS

Answer 4

将应用程序对象作为第一个参数传递，如果必须这样做，则可以使用(Application)context.GetApplicationContext()。然后将实现广播接收器类的类作为第二个参数传递，例如broadcastReceiver.class

public static boolean validateReceiverInManifest(Application application, Class receiverClass) throws PackageManager.NameNotFoundException {
    PackageManager pm = application.getPackageManager();
    String packageName = application.getPackageName();

    PackageInfo packageInfo = pm.getPackageInfo(packageName, PackageManager.GET_RECEIVERS);
    ActivityInfo[] receivers = packageInfo.receivers;
    String receiverClassName = receiverClass.getName();
    for (ActivityInfo activityInfo : receivers) {
        if (activityInfo.name.equals(receiverClassName)) {
            return true;
        }
    }
    return false;
}

- Pellet