// When activating, make sure the given component name is actually a valid device admin.
// No need to check this when deactivating, because it is safe to deactivate an active
// invalid device admin.
if (!mDPM.isAdminActive(cn)) {
List<ResolveInfo> avail = getPackageManager().queryBroadcastReceivers(
new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS);
int count = avail == null ? 0 : avail.size();
boolean found = false;
for (int i=0; i<count; i++) {
ResolveInfo ri = avail.get(i);
if (ai.packageName.equals(ri.activityInfo.packageName)
&& ai.name.equals(ri.activityInfo.name)) {
try {
// We didn't retrieve the meta data for all possible matches, so
// need to use the activity info of this specific one that was retrieved.
ri.activityInfo = ai;
DeviceAdminInfo dpi = new DeviceAdminInfo(this, ri);
found = true;
} catch (XmlPullParserException e) {
Log.w(TAG, "Bad " + ri.activityInfo, e);
} catch (IOException e) {
Log.w(TAG, "Bad " + ri.activityInfo, e);
}
break;
}
}
if (!found) {
Log.w(TAG, "Request to add invalid device admin: " + cn);
finish();
return;
}