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POPassing binary blob through a content provider
 

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    <p>I have a content provider that is custom to my set of Android applications, and one of the things it needs to expose is a small (20-30 KiB) byte array. The URI for these blobs looks like:</p> <pre><code>content://my.authority/blob/# </code></pre> <p>where <code>#</code> is the row number; the resulting cursor has the standard <code>_id</code> column and a data column. I'm using a <code>MatrixCursor</code> in the provider's <code>query()</code> method:</p> <pre><code>byte[] byteData = getMyByteData(); MatrixCursor mc = new MatrixCursor(COLUMNS); mc.addRow(new Object[] { id, byteData }); </code></pre> <p>Later, in the application consuming the data, I do:</p> <pre><code>Cursor c = managedQuery(uri, null, null, null, null); c.moveToFirst(); byte[] data = c.getBlob(c.getColumnIndexOrThrow("data")); </code></pre> <p>However, data does not contain the contents of my original byte array; rather, it contains something like <code>[B@435cc518</code>, which looks more like the address of the array than the contents. I tried wrapping the byte array in an implementation of <code>java.sql.Blob</code>, figuring that it might be looking for that since the content provider subsystem was written to be easy to use with SQLite, but it didn't help.</p> <p>Has anyone gotten this to work? If the data was in the file system, there are methods in <code>ContentProvider</code> that I could use to provide a marshalled <code>InputStream</code> to the client, but the data I'm trying to send back lives as a resource in the content provider's APK.</p>
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    1. USCharles
    1. USuser308405
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    1. COBTW I am targeting a fairly old version (android-3) if it matters.
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    2. COI understand you solved this issue. Any chance you share it with the rest of us?
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      1. USLior Iluz
 

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