What is wrong with the code

Question

I have written PhoneStateListener which listens for telephony events through broadcast receiver. I am receiving following error on TelephonyManager.CALL_STATE_IDLE

06-10 13:50:48.360: VERBOSE/ERROR(4686): URI: content://com.android.contacts/phone_lookup/, calling user: com.emergency.alert, calling package:com.emergency.alert

Code is Listed below

public class MyPhoneStateListener extends PhoneStateListener {
 public Context context;
 //private static MediaPlayer mMediaPlayer;
 private Uri alert;
 private static Uri prev_ringtone;
 public static final String PREFS_NAME = "ealertprefs";
 public static int phone_state;
 public EmergencyAdapter dbHelper; 
 private String fetchName;
 @Override
 public void onCallStateChanged(int state, String incomingNumber) {
 // TODO Auto-generated method stub 
 switch(state){
 case TelephonyManager.CALL_STATE_IDLE:
 try {
 if(call_from_elist(incomingNumber)) { 
 retrieve_phone(); 
 }
 }
 catch(Exception e) {
 Log.v("ERROR", e.getMessage());
 }
 Log.v("CALL", "IDLE");
 break;
 case TelephonyManager.CALL_STATE_OFFHOOK: 
 //retrieve_phone(); 
 break;
 case TelephonyManager.CALL_STATE_RINGING:
 if(call_from_elist(incomingNumber)) {
 set_uri();
 wake_up_phone();
 send_notification(); 
 } 
 break;
 }
 }
 private void retrieve_phone() {
 AudioManager am = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE); 
 am.setRingerMode(phone_state);
 RingtoneManager.setActualDefaultRingtoneUri(context, RingtoneManager.TYPE_RINGTONE, prev_ringtone);
 }
 private boolean call_from_elist(String number) {
 String[] projection = new String[] {
 PhoneLookup._ID,
 PhoneLookup.DISPLAY_NAME };
 // encode the phone number and build the filter URI
 Uri contactUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
 // query time
 Cursor c = context.getContentResolver().query(contactUri, projection, null, null, null);
 // if the query returns 1 or more results
 // return the first result
 Log.v("ELIST", "LOG");
 if (c.moveToFirst()) {
 Log.v("ELIST", "LOG2");
 String _id = c.getString(c
 .getColumnIndex(ContactsContract.Contacts._ID));
 dbHelper = new EmergencyAdapter(context);
 dbHelper.open();
 Log.v("CALLER", _id);
 Cursor cursor = dbHelper.fetchEntry_call(Long.parseLong(_id));
 Log.v("CALLER", ""+cursor.getCount());
 if(cursor.getCount() > 0) { 
 fetchName = cursor.getString(1);
 Log.v("CALLER", fetchName); 
 return true;
 }
 else { 
 return false;
 } 
 }
 return false;
 }
 private void wake_up_phone() {
 AudioManager am = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
 phone_state = am.getRingerMode();
 Log.v("WAKEUP", Integer.toString(phone_state));
 RingtoneManager.setActualDefaultRingtoneUri(context, RingtoneManager.TYPE_RINGTONE, alert);
 am.setRingerMode(AudioManager.RINGER_MODE_NORMAL); 
 }
 private void send_notification(){
 NotificationManager notifier = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE); 
 int icon = R.drawable.icon;
 Notification notification = new Notification(icon,"Simple Notification",System.currentTimeMillis()); 
 Intent toLaunch = new Intent(context, main.class);
 PendingIntent contentIntent = PendingIntent.getActivity(context, 0, toLaunch, 0); 
 notification.setLatestEventInfo(context, "Emergency Alert", "Emergency call received from "+fetchName, contentIntent); 
 notification.flags |= Notification.FLAG_AUTO_CANCEL; 
 notifier.notify(0x007, notification);
 }
 private void set_uri() {
 SharedPreferences settings = context.getSharedPreferences(PREFS_NAME, 0);
 String ringtone = settings.getString("call_uri", "");
 if(ringtone.equals("")) {
 this.alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
 }
 else {
 this.alert = Uri.parse(ringtone);
 } 
 prev_ringtone = RingtoneManager.getActualDefaultRingtoneUri(context, RingtoneManager.TYPE_RINGTONE);
 }
}

This error only occurs on TelephonyManager.CALL_STATE_IDLE case. Please provide any solution to this problem.

Stack Trace is

06-10 15:32:39.332: ERROR/AndroidRuntime(5559): FATAL EXCEPTION: main 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): java.lang.IllegalArgumentException: URI: content://com.android.contacts/phone_lookup/, calling user: com.emergency.alert, calling package:com.emergency.alert 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:144) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:114) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.content.ContentProviderProxy.bulkQueryInternal(ContentProviderNative.java:372) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.content.ContentProviderProxy.query(ContentProviderNative.java:408) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.content.ContentResolver.query(ContentResolver.java:264) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at com.emergency.alert.MyPhoneStateListener.call_from_elist(MyPhoneStateListener.java:72) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at com.emergency.alert.MyPhoneStateListener.onCallStateChanged(MyPhoneStateListener.java:36) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.telephony.PhoneStateListener2ドル.handleMessage(PhoneStateListener.java:391) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.os.Handler.dispatchMessage(Handler.java:99) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.os.Looper.loop(Looper.java:143) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at android.app.ActivityThread.main(ActivityThread.java:4196) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at java.lang.reflect.Method.invokeNative(Native Method) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at java.lang.reflect.Method.invoke(Method.java:507) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 06-10 15:32:39.332: ERROR/AndroidRuntime(5559): at dalvik.system.NativeStart.main(Native Method)

• Mark Allison: Try adding the actual exception to your Log.v() calls as it will dump full details of the exception being thrown to LogCat: Log.v( "TAG", "Where it was caught", e ); Then provide the LogCat of the stack trace that gets dumped when a failure occurs.
• Ayaz Alavi: I have posted stack trace, please take a look at it and let me know if you figure out something

Answer 1

I think that your problem is that when you're receiving CALL_STATE_IDLE, the incomingNumber variable is not set because there isn't an active or ringing call, and therefore no phone number associated with the current phone state. You're then doing a contacts lookup which is failing because you are not including a valid phone number in the query.

So you're trying to lookup a contact when you don't actually have a phone number to search on.

• Ayaz Alavi: Thanks so the solution is to set phone number in local static variable at Ringing State?
• Mark Allison: No, because there is no phone number associated with CALL_STATE_IDLE, so doing a lookup of the currently active caller when there is no active call doesn't make any sense.

Answer 2

Ah I've seen this error before,

your URI is malformed as you are setting it to the default ringtone

 prev_ringtone = RingtoneManager.getActualDefaultRingtoneUri(context, RingtoneManager.TYPE_RINGTONE);

However the default ringtone has not been set so your getting back a blank string / null or some other error.

check this question and answer for clarity: How to play ringtone/alarm sound in Android