I have a problem reading APNs in Android v4.2 (Yes reading, not writing APNS), it is throwing a security exception:
No permission to write APN settings: Neither user 10068 nor current process has android.permission.WRITE_APN_SETTINGS.
Same code used to work on all previous platforms, does anyone know of any work around to this?
Thanks!
This appears to be an intentional change. The git commit where they added this defense includes the following comment:
Since the DB may contain corp passwords, we should secure it. Using the same permission as writing to the DB as the read is potentially as damaging as a write.
It is conceivable that your issue will cause them to consider adding a separate read permission, but at least for the time being, this is a regression in 4.2.
If you want to Read APN for Android 4.2 and more they are a change to do. I tested and it's work.
In Android 4.1 and below use this :
Cursor c = getContentResolver().query(Uri.withAppendedPath(Telephony.Carriers.CONTENT_URI, "current"), null, null, null, null); And for Android 4.2 and above use this code :
private static final String[] APN_PROJECTION = { Telephony.Carriers.TYPE, // 0 Telephony.Carriers.MMSC, // 1 Telephony.Carriers.MMSPROXY, // 2 Telephony.Carriers.MMSPORT // 3 }; And this line :
final Cursor apnCursor =SqliteWrapper.query(context, this.context.getContentResolver(), Uri.withAppendedPath(Carriers.CONTENT_URI, "current"), APN_PROJECTION, null, null, null); The SQLiteWrapperClass is hidden (found this class in internet)
import android.database.sqlite.SqliteWrapper; My English is not quite good, sorry for this.
You can read default settings from /etc/apns-conf.xml:
private boolean getSettingsFromApnsFile(Context context, String apnName) { FileReader reader = null; boolean sawValidApn = false; try { reader = new FileReader("/etc/apns-conf.xml"); XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); factory.setNamespaceAware(true); XmlPullParser xpp = factory.newPullParser(); xpp.setInput(reader); TelephonyManager telephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE); String simOperator = telephonyManager.getSimOperator(); if (TextUtils.isEmpty(simOperator)) { logger.warn("unable to get sim operator - so unable to get mms config"); return false; } int eventType = xpp.getEventType(); while (eventType != XmlPullParser.END_DOCUMENT) { if (eventType == XmlPullParser.START_TAG && xpp.getName().equals("apn")) { HashMap attributes = new HashMap(); for (int i=0; i I have the situation too, my solution is don't access android_assets in AsyncTask. "Make sure that only your main thread have the permission to access you app's assets dir"
I got the problem when I coding like this:
@Override protected void onResume() { super.onResume(); //mWebView.loadUrl("file:///android_asset/95306.html"); new LoadUrlTask().execute("file:///android_asset/95306.html"); } ... class LoadUrlTask extends AsyncTask { // progressDialog = new ProgressDialog(LoadActivity.this); @Override protected String doInBackground(String... strings) { mWebView.loadUrl(strings[0]); return ""; } @Override protected void onPostExecute(String s) { super.onPostExecute(s); //progressDialog.dismiss(); } @Override protected void onPreExecute() { super.onPreExecute(); //progressDialog.setMessage("loading..."); //progressDialog.show(); } } and I fix it by:
@Override protected void onResume() { super.onResume(); mWebView.loadUrl("file:///android_asset/95306.html"); //new LoadUrlTask().execute("file:///android_asset/95306.html"); } hope that will help you!