26.04.2011 19:53, Paul пишет:
Right, but in my case I am dealing with a physical file, not data
stored in a database. I have physical .png files located in the
applications /files directory that I want to be able to send/share.
A ContentProvider doesn't have to be backed by a database.
Since yours is not, you can use MatrixCursor to build one row of data in
memory in your query().
http://developer.android.com/reference/android/database/MatrixCursor.html
As I was originally copying the file over to the cache directory and
making them world readable via .exec(), I asked about spaces in
filenames. I was told not to use this method, but to use the content
provider, but that only gets called if I move away from the file: uri
to the content: uri... but using a content provider, the share/send
seems to be expecting some kind of database implementation.
There is no expectation of a database.
Even though ContentProviders are often backed up by SQL databases, the
abstraction is flexible enough to allow for non-database data (as is the
case for your application).
Should I be looking for the file-specific uri in query() (those that
end with .png), and if that hits, then create and return a cursor that
contains the needed columns, fn, _data?
Remember that these URIs originate from your own code, and are opaque to
all other applications.
There is really no need to be cryptic (e.g.
content://paulsapp/item/2349), you can make them more convenient for
yourself, for example:
content://paulsapp/cache/RealFileName.png
Writing query() should be really simple then.
Just for reference, Open Intents File Manager does something pretty
close with its content URIs, so you are heading down a well trodden path.
-- Kostya
Thanks,
Paul
On Apr 26, 11:42 am, Kostya Vasilyev<[email protected]> wrote:
> Right.
>
> Any sane application dealing with a content:// URI will want to know the
> data item's title and size (at least).
>
> It would do that by querying the URI for columns, defined here:
>
> http://developer.android.com/reference/android/provider/MediaStore.Me...
>
> using ContentResolver, which will direct the query back to your
> ContentProvider's query method.
>
> Looks like the MMS application also wants to get the actual filename
> (the _data column).
>
> -- Kostya
>
> 26.04.2011 19:29, Paul пишет:
>
>
>
> > That did it when it comes to my own call to:
>
> > getContentResolver().openFileDescriptor(validUri, "r");
>
> > It is now calling openAssetFile() in my content provider. However, in
> > the usage of the send functionality with the content://... uri:
>
> > Intent share = new Intent(Intent.ACTION_SEND);
> > share.setType(StylePad.DEFAULT_MIME_PNG);
> > share.putExtra(Intent.EXTRA_STREAM, validUri);
> > startActivity(Intent.createChooser(share,
> > getString(R.string.activity_title_share)));
>
> > I am now getting a IllegalArgumentException thrown, and my openFile/
> > openAssetFile never gets called (the Exception is hitting before it
> > would get there I guess). Here is the Exception:
>
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440):
> > java.lang.IllegalArgumentException: column '_data' does not exist
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:
> > 314)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > android.database.CursorWrapper.getColumnIndexOrThrow(CursorWrapper.java:
> > 99)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.UriImage.initFromContentUri(UriImage.java:160)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.UriImage.<init>(UriImage.java:90)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.MMSMessage.addImage(MMSMessage.java:1076)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.ConversationList.addMedia(ConversationList.java:
> > 7095)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.ConversationList.addAttachment(ConversationList.java:
> > 8370)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.ConversationList.handleIntent(ConversationList.java:
> > 1860)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.ConversationList.access$2800(ConversationList.java:
> > 180)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.mms.ui.ConversationList
> > $ThreadListQueryHandler.onQueryComplete(ConversationList.java:2999)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > android.content.AsyncQueryHandler.handleMessage(AsyncQueryHandler.java:
> > 344)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > android.os.Handler.dispatchMessage(Handler.java:99)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > android.os.Looper.loop(Looper.java:123)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > android.app.ActivityThread.main(ActivityThread.java:4627)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > java.lang.reflect.Method.invokeNative(Native Method)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > java.lang.reflect.Method.invoke(Method.java:521)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.internal.os.ZygoteInit
> > $MethodAndArgsCaller.run(ZygoteInit.java:871)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
> > 04-26 11:12:54.322: ERROR/AndroidRuntime(12440): at
> > dalvik.system.NativeStart.main(Native Method)
>
> > Looking at the source:
> >http://grepcode.com/file/repository.grepcode.com/java/ext/com.google....
>
> > So the Send functionality is querying my Provider's query() method,
> > which I can see, but it is looking for two columns that I simply don't
> > have, Part.FILENAME (column fn) and then if not found, column
> > Part._DATA (column _data).
>
> > Any ideas how to respond to this?
--
Kostya Vasilyev -- http://kmansoft.wordpress.com
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