i have such trouble. ContentResolver doesn't see several mp3s on my Meizu MX3. I use it as follows:
ContentResolver mResolver;
...
String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0";
Cursor cur = mResolver.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
null,
selection,
null,
null);
if (!cur.moveToFirst()) {
Log.e(TAG, "Failed to move cursor to first row (no query results).");
return;
}
After that cursor doesn't contains all the music on my phone. For example, it dosn't see my records from the dictophone, although they have mp3 format. There is no file .nomedia in records's directory /sdcard/Recorder. And if I place some mp3 in this dir and scan for media changes ContentResolver will find this mp3, but only this, so records leave invisible for it.
Could anybody explain me why ContentResolver's behaviour is so strange?
boruno!
I had simular problem and I think I finally find the solution.
I used the cursor in my app and tried to set datasources to MediaMetaRetriever like this:
mmr.setDataSource(path);
So, when the cursor can't set data source, it trows an exeption:
E/cursor: setDataSource failed: status = 0xFFFFFFEA
After that, the cursor stops itself.
I've just used try-catch blocks and get all music files.
Hope it helps.
Related
Given this screenshot of a Firefox DOM rendering, I'm interested in reading that highlighted element down a ways there and writing to the "hidden" attribute 3 lines above it. I don't know the Javascript hierarchy nomenclature to traverse through that index "0" subwindow that shows in the first line under window indexed "3" which is the root context of my code's hierarchy. That innerText element I'm after does not appear anywhere else in the DOM, at least that I can find...and I've looked and looked for it elsewhere.
Just looking at this DOM, I would say I could address that info as follows: Window[3].Window[0].contentDocument.children[0].innerText (no body, interestingly enough).
How this DOM came about is a little strange in that Window[0] is generated by the following code snippet located inside an onload event. It makes a soft EMBED element, so that Window[0] and everything inside is transient. FWIW, the EMBED element is simply a way for the script to offload the task of asynchronously pulling in the next .mp4 file name from the server while the previous .mp4 is playing so it will be ready instantly onended; no blocking necessary to get it.
if (elmnt.contentDocument.body.children[1] == 'undefined' || elmnt.contentDocument.body.children[1] == null)
{
var mbed = document.createElement("EMBED");
var attsrc = document.createAttribute("src")
mbed.setAttributeNode(attsrc);
var atttyp = document.createAttribute("type")
mbed.setAttributeNode(atttyp);
var attwid = document.createAttribute("width")
mbed.setAttributeNode(attwid);
var atthei = document.createAttribute("height")
mbed.setAttributeNode(atthei);
elmnt.contentDocument.body.appendChild(mbed);
}
elmnt.contentDocument.body.children[1].src=elmnt.contentDocument.body.children[0].currentSrc + '\?nextbymodifiedtime'
elmnt.contentDocument.body.children[1].type='text/plain'
I know better than to think Window[3].Window[0]...... is valid. Can anyone throw me a clue how to address the DOM steps into the contentDocument of that Window[0]? Several more of those soft Windows from soft EMBED elements will eventually exist as I develop the code, so keep that in mind. Thank you!
elmnt.contentWindow[0].document.children[0].innerText does the trick
I have a Moto Mc9096 device, EDMK SDK, VS2008 etc all of the prereq's
I'm having an issue where once I've scanned a barcode it constantly repeats the event. normally when this happens its a flag or status needs changing but there are no obvious settings to stop it reading again.
code below
private void Barcode_Read(object sender, ReaderData readerdata)
{
if (readerdata.Text != null)
{
if (readerdata.Text == "abc")
{
MessageBox.Show(readerdata.text);
}
}
}
Notes
I've tried
bar.Dispose();
bar.Reader.Actions.Flush();
bar.ReaderData.Dispose() ;
with no success. the EnabledScanner is set on form load and off during form close.
My expectation was when the user scans a barcode it fires the read event once.
but it constantly fires after the users first scan.
You might want to check the aimType property, by default it should be AIM_TYPE_TRIGGER but other settings allow a single trigger pull to perform multiple scans (AIM_TYPE_CONTINUOUS_READ) so perhaps that has been changed.
You should have some samples installed by the SDK at file:///C:/Users/Public/Motorola%20EMDK%20for%20.NET/v2.9/SampLauncher2008.htm (by default) that show best practice.
Up until now, this block of code has been using to build documents with text for several months with no snags. I am now trying to dynamically add images. I've spent about two days staring at code and researching and am at an end. I suspect the issue is that relationships are not being created (more details below.) Maybe not?
//set stuff up...
WordprocessingDocument doc = WordprocessingDocument.Open(fsPat, true, new OpenSettings(){
AutoSave = true,
MarkupCompatibilityProcessSettings = new MarkupCompatibilityProcessSettings(MarkupCompatibilityProcessMode.ProcessAllParts,
DocumentFormat.OpenXml.FileFormatVersions.Office2007),
MaxCharactersInPart = long.MaxValue
});
MainDocumentPart mainPart = doc.MainDocumentPart;
.
.Other stuff goes here
.
//now the fun...
Run r2 = new Run();
// Add an ImagePart.
ImagePart ip = mainPart.AddImagePart(ImagePartType.Png);
string imageRelationshipID = mainPart.CreateRelationshipToPart(ip); //
using (Stream imgStream = ip.GetStream())
{
System.Drawing.Bitmap b = new System.Drawing.Bitmap("myfile.png");
b.Save(imgStream, System.Drawing.Imaging.ImageFormat.Png);
}
Drawing drawing = BuildImage(imageRelationshipID, "name"+imageRelationshipID.ToString(), 17, 17);
r2.Append(drawing);
p.Append(r2);
The image part is essentially copied from http://blog.stuartwhiteford.com/?p=33) and is running in a loop presently. I also copied his BuildImage() function and use it as-is.
When I open the resulting docx, I see red Xs where the images are saying "This image cannot currently be displayed."
When I open the zip, the images will appear in root/media, but not root/word/media as I'd expect. I also cannot find the images referenced in any of the relationship files. Ideally they'd be in root/word/_rels/document.xml.rels. You'll notice I changed how imageRelationshipID is set hoping to fix this. It didn't.
Please help. Thank you.
So... It seems like OpenXML just hates me. I copied AddImagePart code from like 3-4 places among trying other things--none of which lasted long--and just could not get relationships to form. The implication I see is that they happen automatically with the AddImagePart function.
I ended up doing a complete workaround where I add all the pictures I might want to put and remove the Drawing nodes' parents of the ones I didn't want (Run nodes, generally.) Since these are very small pictures, it's feasible and in ways more elegant than trying to add them as necessary since I don't have to keep track of where images are stored on disk.
I have developed a C# application, in the application the users choose a photo for each record. However the user should also be able to change the pre-selected photo with a newer one. When the user changes the photo the application first deletes the old photo from the application directory then copies the new photo, but when it does that the application gives an exception because the file is used by the application so it cannot be deleted while the application is running. Does any one have a clue how to sort this out? I appreciate your help
This is the exception
The process cannot access the file
'D:\My
Projects\Hawkar'sProject\Software\Application\bin\Debug\Photos\John
Smith.png' because it is being used by
another process.
//defining a string where contains the file source path
string fileSource = Open.FileName;
//defining a string where it contains the file name
string fileName = personNameTextBox.Text + ".png" ;
//defining a string which specifies the directory of the destination file
string fileDest = dir + #"\Photos\" + fileName;
if (File.Exists(fileDest))
{
File.Delete(fileDest);
//this is a picturebox for showing the images
pbxPersonal.Image = Image.FromFile(dir + #"\Photos\" + "No Image.gif");
File.Copy(fileSource, fileDest);
}
else
{
File.Copy(fileSource, fileDest);
}
imageIDTextBox.Text = fileDest;
First of all, you code is not good.
The new image is only copied if there is currently no image (else).
But if there is an old image, you only delete this image, but never copy the newer one (if).
The code should better look like this:
if (File.Exists(fileDest))
{
File.Delete(fileDest);
}
File.Copy(fileSource, fileDest);
imageIDTextBox.Text = fileDest;
This code should work, but if you are getting an exception that the file is already in use, you should check "where" you use the file. Perhaps you are reading the file at program start. Check all parts of your program you are accessing these user files if there are some handles open.
Thanks a lot for your help and sorry for the mistake in the code I just saw it, my original code is just like as you have written but I don't know maybe when I posted accidentally I've put like this. when the application runs there is a picturebox which the image of each record is shown, that is why the application is giving an exception when I want to change the picture because it has been used once by the picturebox , however I've also tried to load another picture to the picture box before deleting the original one but still the same. I've modified the above could if you want to examine it
I am trying to register to a "Device added/ Device removed" event using WMI. When I say device - I mean something in the lines of a Disk-On-Key or any other device that has files on it which I can access...
I am registering to the event, and the event is raised, but the EventType propery is different from the one I am expecting to see.
The documentation (MSDN) states : 1- config change, 2- Device added, 3-Device removed 4- Docking. For some reason I always get a value of 1.
Any ideas ?
Here's sample code :
public class WMIReceiveEvent
{
public WMIReceiveEvent()
{
try
{
WqlEventQuery query = new WqlEventQuery(
"SELECT * FROM Win32_DeviceChangeEvent");
ManagementEventWatcher watcher = new ManagementEventWatcher(query);
Console.WriteLine("Waiting for an event...");
watcher.EventArrived +=
new EventArrivedEventHandler(
HandleEvent);
// Start listening for events
watcher.Start();
// Do something while waiting for events
System.Threading.Thread.Sleep(10000);
// Stop listening for events
watcher.Stop();
return;
}
catch(ManagementException err)
{
MessageBox.Show("An error occurred while trying to receive an event: " + err.Message);
}
}
private void HandleEvent(object sender,
EventArrivedEventArgs e)
{
Console.WriteLine(e.NewEvent.GetPropertyValue["EventType"]);
}
public static void Main()
{
WMIReceiveEvent receiveEvent = new WMIReceiveEvent();
return;
}
}
Well, I couldn't find the code. Tried on my old RAC account, nothing. Nothing in my old backups. Go figure. But I tried to work out how I did it, and I think this is the correct sequence (I based a lot of it on this article):
Get all drive letters and cache
them.
Wait for the WM_DEVICECHANGE
message, and start a timer with a
timeout of 1 second (this is done to
avoid a lot of spurious
WM_DEVICECHANGE messages that start
as start as soon as you insert the
USB key/other device and only end
when the drive is "settled").
Compare the drive letters with the
old cache and detect the new ones.
Get device information for those.
I know there are other methods, but that proved to be the only one that would work consistently in different versions of windows, and we needed that as my client used the ActiveX control on a webpage that uploaded images from any kind of device you inserted (I think they produced some kind of printing kiosk).
Oh! Yup, I've been through that, but using the raw Windows API calls some time ago, while developing an ActiveX control that detected the insertion of any kind of media. I'll try to unearth the code from my backups and see if I can tell you how I solved it. I'll subscribe to the RSS just in case somebody gets there first.
Well,
u can try win32_logical disk class and bind it to the __Instancecreationevent.
You can easily get the required info
I tried this on my system and I eventually get the right code. It just takes a while. I get a dozen or so events, and one of them is the device connect code.