I am using few update queries to update my tables(Sqlite). They are working very well on my emulator. But, when I installed on my phone, they dont return sucess. At the same time,it does not throw any errors also.
This is my code:
ContentValues msg_values = new ContentValues();
msg_values.put("folder_id", 1);
int i=getContentResolver().update(MBContants.CONTENT_URI_SMS, msg_values,
"address=" + msg.getAddress(), null);
if(i>0)
System.out.println("done..!");
else
Log.i("--------------------------------------------","not done");
Where, I've created my db and the URI to my table is MBContants.CONTENT_URI_SMS, where MBContants class holds all the URI's.
Please help solve this issue.
Thanks,
Viashnavi
Try debugging your app from the phone. Don't forget to turn debugging on in the phone's settings. Set a breackpoint at the start of this logic and step through to see what happens. I'm sure the answer will be pretty obvious once you do that.
Related
for awhile now, I am working on a media playing app. In this app, I also programmed a little 5 Band EQ using mainly this code:
try
{
AppPreferencesClass ap = new AppPreferencesClass(ctx);
if (Activity_Player.eq != null)
{
Activity_Player.eq.Dispose();
}
Activity_Player.eq = new Android.Media.Audiofx.Equalizer(0, Activity_Player.mediaPlayerSessionId);
Activity_Player.eq.SetEnabled(true);
await Task.Run(() =>
{
if (Activity_Player.EqActive)
{
if (ap.getAwesomeSound())
{
Activity_Player.eq.SetBandLevel(0, Convert.ToInt16(Activity_Equalizer.awesomesound0));
Activity_Player.eq.SetBandLevel(1, Convert.ToInt16(Activity_Equalizer.awesomesound1));
Activity_Player.eq.SetBandLevel(2, Convert.ToInt16(Activity_Equalizer.awesomesound2));
Activity_Player.eq.SetBandLevel(3, Convert.ToInt16(Activity_Equalizer.awesomesound3));
Activity_Player.eq.SetBandLevel(4, Convert.ToInt16(Activity_Equalizer.awesomesound4));
}
else
{
Activity_Player.eq.SetBandLevel(0, Convert.ToInt16(ap.getEQ0()));
Activity_Player.eq.SetBandLevel(1, Convert.ToInt16(ap.getEQ1()));
Activity_Player.eq.SetBandLevel(2, Convert.ToInt16(ap.getEQ2()));
Activity_Player.eq.SetBandLevel(3, Convert.ToInt16(ap.getEQ3()));
Activity_Player.eq.SetBandLevel(4, Convert.ToInt16(ap.getEQ4()));
}
}
});
}
catch
{
}
For many days, this worked just fine but out of NO WHERE, the catch block sometimes gets activated. But only occasionally.On other times, try works fine but there are just no more changes to the audio being played. This is odd enough, since I never changed anything on this code after it starting working.
I then tried another phone (Samsung S4) on my code and the eq worked just perfectly.
So this got me googleing and I think I might have heard that there can only be as many audiosession IDs after you just would run out. I tested and the audio session ID used here is somewhere at 74,000.
So this could be an issue I thought but this would easialy be tested because I already had this very app running in the google play store just an older version of it. I am 100 percent positive, that in this version the EQ worked on my phone. Otherwise I would have not uploaded that version.
Anyway, I downloaded my old app from the play store and here we go:
It doesnt work anymore. The EQ in the old version also has simply NO effect on the audio. While ofcourse on my other phones this old version works perfectly.
Before I am going to reset my own personal phone I wanted to ask you guys if this could be infact the case.
Another thing is, that I am using many static variables in order to get the EQ to work right. Actually, the variable EQ itself is static. Do maybe static variables sort of leave a "trace" behind and maybe I have set the eq up just "too" many times? Although I am disposing of the object before intialising it again (see in my code).
Summing up:
1.) Can there maybe be a maxmium number of EQ or AudioSessionIDs and I have passed those?
2.) Can creating static variables over and over again in my code cause a memory leak so big, even deinstalling the app doesnt do anything?
Thank you!
This is the error log:
11-20 12:16:43.736 E/AudioEffect(16990): set(): AudioFlinger could not create effect, status: -38
11-20 12:16:43.736 E/AudioEffects-JNI(16990): Error setting AudioEffect
11-20 12:16:43.737 E/AudioEffect-JAVA(16990): Error code -19 when initializing AudioEffect.
Thread started: #311-20 12:16:43.745 V/MediaPlayerNative(16990): unrecognized message: (6, 0, 0)
After 2 days of googeling and trying evetything out, here is the issue:
NOT CALLING RELEASE() will have you eventually have to REBOOT your phone. It wont allow too many instances of an EQ to be set.
Solution:
if (eq != null)
{
eq.Release();
}
I am working with the native calendar, and I want to delete the events in native calendar. Provided that the event ID is known.
for (long eventID : eventIDList) {
// delete from native calendar
Uri deleteUri = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventID);
int isDeleted = mContentResolver.delete(deleteUri, null, null);
Log.i("LOG", "Event deleted: " + String.valueOf(isDeleted));
}
I have checked with the log. It returns "1" which means 1 row is deleted.
It works well on normal Android Device, and the record is deleted.
But the problem appears in Samsung's Android device (S-Planner). After the delete cmd run, isDeleted returns 1. Sadly when I do a query through ContentResolver, the record supposed to be deleted still exists. (In S-Planner, the deleted won't be shown, but it is meaningless for me in this project)
Is there any workout to fix it?
** I have checked the delete cmd works fine on non-samsung devices, and isDelete returns 1 for all devices.
Thank you!!
I am developing an Android app in which I have to detect changes in Android SD card for audio files with the file name, file path and operation performed upon it. Example if I am adding a file in my SD card then I want to know
Name of the file which is added
Path of the file
Operation -- Add
Previously I Have tried file observer But for that I have to apply it on each and every directory. So I searched for some other solution and got the info about Audio.Media.EXTERNAL_CONTENT_URI. Then I created a content observer like this
UriObserver.java -- which is a content observer
class UriObserver extends ContentObserver {
public UriObserver(Handler handler) {
super(handler);
// TODO Auto-generated constructor stub
}
#Override
public void onChange(boolean selfChange) {
// TODO Auto-generated method stub
super.onChange(selfChange);
Log.d("INSTANT", "GETTING CHANGES");
}
}
This is the code for registration for it
UriObserver observer = new UriObserver(new Handler());
Log.d("INSTANT", "registered content observer");
this.getApplicationContext()
.getContentResolver()
.registerContentObserver(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, false,
observer);
Log.d("INSTANT", "registered content observer");
It let me know that some change has been occur in sdcard related to audio files. But it doesn't gives any sort of info about which file has been added, edited or deleted.
Then I searched for for solution and got this post
Android: How to detect a change in MediaStore when connected over MTP
In this post some code is given by Bhiefer as an answer which I think it could work, so I tried to implement that but I am not able to do so.
What can I do for this?
Update
Can I query Audio.Media.EXTERNAL_CONTENT_URI for its latest changes? This code:
mCursor = context.getContentResolver().query(
Audio.Media.EXTERNAL_CONTENT_URI, null, null, null, "_id");
mCursor.moveToLast();
doesn't give the latest changes. Is there any other method to get the latest changes?
Let me try to unwind
ContentObserver
It doesn't give you information on what has changed
It's per design. Nothing in documentation says that it will give you this info.
FileObserver
It isn't recursive
Yes. It's know issue. What is the problem with iterating through all directories and setting observers? Per my understand by default there shouldn't be many (let say a dozen or so).
Android: How to detect a change in MediaStore when connected over MTP
The code which you found is just ContentObserver wrapped in UriObserver.
It does several things
He gets a cursor for one of content provides (in his case I believe it's images from MediaStore)
He registers an observer for this
As soon as some changes happens it forward this changes to external listener
However, this solution has two limitation:
It has inherit problem of ContentObserver that it doesn't report what happened to the data.
I believe it will report only changes to files which are registered in this MediaStore content provider. I believe system scans only special directories on SD card to check for images and so on. So, if a file will be places in some another directory, this solution won't see it.
So, What was your question about his code?
Summary
In the case, if you want to know exact type of changes for ALL files on scdard, I don't think that you can find anything better than FileObserver
Update 1
Couple more ideas, which may be not suitable for you. If you can root a device then you have the option to write filter driver for a filesystem, so your driver will be called each time when something has changed.
You can take a look at this link:
http://www.gossamer-threads.com/lists/linux/kernel/355190
Or you can reuse some existing linux changes notifications systems. As example, look at this:
http://stefan.buettcher.org/cs/fschange/. However, it could be that FileObserver is based exactly on it.
Anyway, both these approaches are low level and will require more time to figure out.
You can get the latest additions/modifications by querying on the DATE_ADDED and DATE_MODIFIED columns, but you will NOT get DELETIONS.
Here is how I do it:
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
long lastDatabaseUpdateTime = preferences.getLong("lastDatabaseUpdateTime", 0);
long newDatabaseUpdateTime = (new Date()).getTime();
String[] cols = new String[] {MediaStore.Audio.Media._ID /* and other columns */};
String where = "("+MediaStore.MediaColumns.DATE_ADDED + ">" + (lastDatabaseUpdateTime/1000);
where += " or " + MediaStore.MediaColumns.DATE_MODIFIED + ">" + (lastDatabaseUpdateTime/1000);
where += ") and "+MediaStore.Audio.AudioColumns.IS_MUSIC+"==1 ";
Cursor cursor = MusicUtils.query(context, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, cols, where, null, null);
/* Do my work on the cursor and close the cursor */
//If no exceptions, then save the new timestamp
SharedPreferences.Editor editor = preferences.edit();
editor.putLong("lastDatabaseUpdateTime", newDatabaseUpdateTime);
editor.commit();
With the new Android 2.2+ operating systems deployed on Samsung phones, the call log has been replaced with a special super log. The super log contains also the information about sent sms. How I can delete this type of log? Can I use a particular Uri (content://...) to delete it? I read that Samsung uses the LogsProvider.apk to manage logs, is there the open source code of it?
Thanks.
Denis.
You can try to delete the calls using this:
context.getContentResolver().delete(android.provider.CallLog.Calls.CONTENT_URI,
null, null);
I don't think **LogsProvider** app Samsung is open source.
Uri to be used for deleting Samsung log is "content://logs/historys".
Use this Uri to delete all the sms log of a particular number.
String smsLogUri = "content://logs/historys";
Context.getContentResolver().delete(Uri.parse(smsLogUri), " logtype = 300 and number like ?", new String[]{phoneNumber});
logtype= 300 is used to delete only sms log.
If you want to delete sms log of all numbers then use:
Context.getContentResolver().delete(Uri.parse(smsLogUri), " logtype = 300 ", null);
I have this code in my app
Alarm1 = Settings.System.getString(getContentResolver(),
Settings.System.NEXT_ALARM_FORMATTED);
Its working on htcs,motorolas,but not on galaxy s phones.The application crashes.
Would the following catch the error without crashing the application service?
String Alarm1=null;
try{
Alarm1 = Settings.System.getString(getContentResolver(),
Settings.System.NEXT_ALARM_FORMATTED);
}
catch (Exception e) {
Log.i("Exception", "Exception next alarm not found = " + e);
}
if (TextUtils.isEmpty(Alarm1)) {
//if i am i here either no alarm is set or couldn't read it from the phone
//do something else
}
Unless there is a different code for the galaxy s, and can i find it.How can i make it throw an exception on a phone that works, for testing purposes?Thanks.
I have the same problem on a widget i developed, it seems that on Galaxy S there is no entry on settings.db with ID NEXT_ALARM_FORMATTED, this makes the app crash. Sadly using try/catch it's not enough to solve the issue, widget still crashes.
I don't have a Galaxy S to debug the issue, if you find any workaround (other than inserting using sqlite3 the row con settings.db) let me know. Maybe you can try to simulate this behaviour by passing an invalid ID to the Settings function, i will try later today...
P.S. To temporary fix this on galaxy s you can (via adb shell)
sqlite3 /data/data/com.android.providers.settings/databases/settings.db
UPDATE "system" SET value='' WHERE name='next_alarm_formatted';
Settings.System.NEXT_ALARM_FORMATTED is deprecated since API 21. Use the following instead:
AlarmManager.AlarmClockInfo alarmInfo = am.getNextAlarmClock();
where am is an instance of AlarmManager.