可以看到你安装的 app 和系统 app 里哪些支持谷歌 fcm 推送，虽然有一些即使支持，可能你是中国大陆账号就不推送消息，比如淘宝、微信。还能支持调出系统日志界面，看看你的手机是否支持 fcm 推送。地址： https://github.com/HappyMax0/FCMPushViewer/releases/tag/1.0.1 fcm, App, 支持, 谷歌
核心代码 ``` for (packageInfo in packageManager.getInstalledPackages(PackageManager.GET_RECEIVERS)) { if (packageInfo.receivers != null) { for (receiverInfo in packageInfo.receivers) { if (receiverInfo.name == "com.google.firebase.iid.FirebaseInstanceIdReceiver" || receiverInfo.name == "com.google.android.gms.measurement.AppMeasurementReceiver") { val appName = packageInfo.applicationInfo.loadLabel(packageManager).toString() val packageName = packageInfo.packageName var icon:Drawable? = packageInfo.applicationInfo.loadIcon(packageManager); val appInfo = AppInfo(appName, packageName, icon) appList.add(appInfo) break } } } } ```
