Android获取所有系统app包名的方法

1. 获取system app列表

List<String> systemApps = new ArrayList<String>();
List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);
for (int i = 0; i < packageInfos.size(); i++) {
    PackageInfo packageInfo = packageInfos.get(i);
    String packageName = packageInfo.packageName;
    ApplicationInfo appInfo = packageInfo.applicationInfo;
    if ((appInfo.flag & ApplicationInfo.FLAG_SYSTEM) != 0) {
        systemApps.add(packageName);
    }
}