如何在android中獲得所有設備管理員列表（活動以及非活動）？

Question

Google API允許我們通過getActiveAdmins（）方法獲取設備中所有活動管理員的列表。但是，我的要求是我想要設備中所有可能的管理員列表，無論是否有效。有沒有一些方法可以做到這一點？

感謝

Answer 1

您可以通過下面的代碼

final Intent deviceAdminIntent = new Intent("android.app.action.DEVICE_ADMIN_ENABLED", null); 
final List<ResolveInfo> pkgAppsList = getPackageManager().queryBroadcastReceivers(deviceAdminIntent, 0); 
for (ResolveInfo aResolveInfo : pkgAppsList) { 
    String pkg = aResolveInfo.activityInfo.applicationInfo.packageName; 
     String name = aResolveInfo.activityInfo.applicationInfo.loadLabel(getPackageManager()).toString(); 

    System.out.println("Package :: " + pkg); 
    System.out.println("Name :: " + name); 
} 

找到的應用程序列表中你可以在應用程序的ResolveInfo所有必要的數據。您可以檢查ResolveInfo javadoc here。

---

我寫了返回ComponentName爲相同getActiveAdmins

private List<ComponentName> getAllAdmins(Context mContext) { 
     List<ComponentName> result = new ArrayList<ComponentName>(); 

     // Read all receivers who can listen android.app.action.DEVICE_ADMIN_ENABLED 
     // You can add all other action which can be used for DeviceAdminReceiver 
     final Intent deviceAdminIntent = new Intent("android.app.action.DEVICE_ADMIN_ENABLED", null); 
     final List<ResolveInfo> pkgAppsList = mContext.getPackageManager().queryBroadcastReceivers(deviceAdminIntent, 0); 
     for (ResolveInfo aResolveInfo : pkgAppsList) { 
      // Prepare component and add to list 

      result.add(new ComponentName(aResolveInfo.activityInfo.applicationInfo.packageName, 
        aResolveInfo.activityInfo.name)); 

      //String pkg = aResolveInfo.activityInfo.applicationInfo.packageName; 
      //String name = aResolveInfo.activityInfo.applicationInfo.loadLabel(getPackageManager()).toString(); 
      //System.out.println("Package :: " + pkg); 
      //System.out.println("Name :: " + name); 
     } 
     return result; 
    } 

Answer 2

您可以在以下的Android源DeviceAdminSettings必要的代碼的方法：https://android.googlesource.com/platform/packages/apps/Settings/+/kitkat-release/src/com/android/settings/DeviceAdminSettings.java

DevicePolicyManager mDPM; // = (DevicePolicyManager) getActivity().getSystemService(Context.DEVICE_POLICY_SERVICE); 
final HashSet<ComponentName> mActiveAdmins = new HashSet<ComponentName>(); 
final ArrayList<DeviceAdminInfo> mAvailableAdmins = new ArrayList<DeviceAdminInfo>(); 

... 

    mActiveAdmins.clear(); 
    List<ComponentName> cur = mDPM.getActiveAdmins(); 
    if (cur != null) { 
     for (int i=0; i<cur.size(); i++) { 
      mActiveAdmins.add(cur.get(i)); 
     } 
    } 
    mAvailableAdmins.clear(); 
    List<ResolveInfo> avail = getActivity().getPackageManager().queryBroadcastReceivers(
      new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED), 
      PackageManager.GET_META_DATA | PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS); 
    if (avail == null) { 
     avail = Collections.emptyList(); 
    } 
    // Some admins listed in mActiveAdmins may not have been found by the above query. 
    // We thus add them separately. 
    Set<ComponentName> activeAdminsNotInAvail = new HashSet<ComponentName>(mActiveAdmins); 
    for (ResolveInfo ri : avail) { 
     ComponentName riComponentName = 
       new ComponentName(ri.activityInfo.packageName, ri.activityInfo.name); 
     activeAdminsNotInAvail.remove(riComponentName); 
    } 
    if (!activeAdminsNotInAvail.isEmpty()) { 
     avail = new ArrayList<ResolveInfo>(avail); 
     PackageManager packageManager = getActivity().getPackageManager(); 
     for (ComponentName unlistedActiveAdmin : activeAdminsNotInAvail) { 
      List<ResolveInfo> resolved = packageManager.queryBroadcastReceivers(
        new Intent().setComponent(unlistedActiveAdmin), 
        PackageManager.GET_META_DATA 
          | PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS); 
      if (resolved != null) { 
       avail.addAll(resolved); 
      } 
     } 
    } 
    for (int i = 0, count = avail.size(); i < count; i++) { 
     ResolveInfo ri = avail.get(i); 
     try { 
      DeviceAdminInfo dpi = new DeviceAdminInfo(getActivity(), ri); 
      if (dpi.isVisible() || mActiveAdmins.contains(dpi.getComponent())) { 
       mAvailableAdmins.add(dpi); 
      } 
     } catch (XmlPullParserException e) { 
      Log.w(TAG, "Skipping " + ri.activityInfo, e); 
     } catch (IOException e) { 
      Log.w(TAG, "Skipping " + ri.activityInfo, e); 
     } 
    } 

    getListView().setAdapter(new PolicyListAdapter()); 

這Android是如何在Device Admins選項卡中爲您列出它們的。