如何获取每个权限的保护级别？

我试图列出所选应用程序中每个权限的保护级别，对于下面给出的代码。但我不知道如何完成它。

ArrayList<String> list_permission = new ArrayList<String>();
        String[] reqp = info.requestedPermissions;
        if (reqp != null) {
            for (i = 0; i < reqp.length; i++) {

                k = i + 1;

                String a = reqp[i];
                if (a.contains("android.permission.")) {
                    String aa[] = a.split("android.permission.");
                    list_permission.add(aa[1]);
                } else {
                    list_permission.add(a);
                }

            }

        }

谁能帮我解决这个问题...只想在权限前面添加保护级别。

您可以使用包管理器 http://developer.android.com/reference/android/content/pm/PackageManager.html class 获取权限信息() http://developer.android.com/reference/android/content/pm/PackageManager.html#getPermissionInfo%28java.lang.String,%20int%29方法得到权限信息 http://developer.android.com/reference/android/content/pm/PermissionInfo.html任何特定权限的对象。权限信息 http://developer.android.com/reference/android/content/pm/PermissionInfo.html对象有属性防护等级 http://developer.android.com/reference/android/content/pm/PermissionInfo.html#protectionLevel可用于检查任何权限的保护级别...您可以根据中定义的常量进行检查许可信息 http://developer.android.com/reference/android/content/pm/PermissionInfo.html类如PROTECTION_FLAG_SYSTEM.

就像下面的代码：

for (PermissionInfo permission : packageInfo.permissions) {
    // Dump permission info
    String protectionLevel;
    switch(permission.protectionLevel) {
    case PermissionInfo.PROTECTION_NORMAL : protectionLevel = "normal"; break;
    case PermissionInfo.PROTECTION_DANGEROUS : protectionLevel = "dangerous"; break;
    case PermissionInfo.PROTECTION_SIGNATURE : protectionLevel = "signature"; break;
    case PermissionInfo.PROTECTION_SIGNATURE_OR_SYSTEM : protectionLevel = "signatureOrSystem"; break;
    default : protectionLevel = "<unknown>"; break;
    }
    Log.i("PermissionCheck", permission.name + " " + protectionLevel);
  }

UPDATE:

要获得以下保护级别requestedPermissions:

String[] reqp = info.requestedPermissions;
String perm = reqp[i];
if (perm.contains("android.permission.")) {
    try {
        PermissionInfo pi = getPackageManager().getPermissionInfo(perm, PackageManager.GET_META_DATA);
        String protctionLevel = "unknown";

        switch(pi.protectionLevel) {
            case PermissionInfo.PROTECTION_NORMAL : protctionLevel = "normal"; break;
            case PermissionInfo.PROTECTION_DANGEROUS : protctionLevel = "dangerous"; break;
            case PermissionInfo.PROTECTION_SIGNATURE : protctionLevel = "signature"; break;
            case PermissionInfo.PROTECTION_SIGNATURE_OR_SYSTEM : protctionLevel = "signatureOrSystem"; break;
            case PermissionInfo.PROTECTION_FLAG_SYSTEM : protctionLevel = "system"; break;
            default : protctionLevel = "<unknown>"; break;
        }
        list_permission.add(perm + "        "+protctionLevel);
    } catch (NameNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

} else {
    list_permission.add(perm);
}

以下行仅适用于 API 级别 16 或更高级别：

        case PermissionInfo.PROTECTION_FLAG_SYSTEM : protctionLevel = "system"; break;