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Android: Access content:// file from intent

In my Android App I authorise the user to share a zip-file with my application (in most cases the user will only use Dropbox for sharing).

So I tried for hours to figure out how to access the content:// file my App is receiving from Dropbox.

I'm using this code:

Intent intent = MainActivity.this.getIntent();
Uri dataUri = intent.getData();
Bundle bundle = new Bundle();
if(dataUri != null)
String dataUriString = dataUri.toString();
File rootDataDir = MainActivity.this.getFilesDir();
if(unzipFile(dataUriString, rootDataDir.toString()))
//true
else
//false

bundle.putString("receive_data", dataUri.toString());

return bundle;


In dataUriString we have something like:

"content://com.dropbox.android.FileCache/filecache/...contenID.."

But if I try to access the file as a normal it won't work:

public boolean unzipFile(String inputPath, String outputPath)
try
byte buffer = new byte[1024];
File file = new File(inputPath);
ZipInputStream zis = new ZipInputStream(new FileInputStream(file));
ZipEntry zipEntry = zis.getNextEntry();
while(zipEntry != null)
String fileName = zipEntry.getName();
File newFile = new File(outputPath+ "/import/" + fileName);
try (FileOutputStream fos = new FileOutputStream(newFile, false))
int len;
while ((len = zis.read(buffer)) > 0)
fos.write(buffer, 0, len);


zipEntry = zis.getNextEntry();

zis.closeEntry();
zis.close();
return true;
catch(IOException err)
return false;




private String getRealPathFromURI(Context context, Uri contentUri)
Cursor cursor = null;
try
String proj = MediaStore.Images.Media.DATA ;
cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
catch (Exception e)
Log.e("ReactNative", "getRealPathFromURI Exception : " + e.toString());
return "";
finally
if (cursor != null)
cursor.close();





So how do I have to work/handle content:// files?

Thanks for any help!!

1 Answer
1

But if I try to access the file as a normal it won't work

That is because it is not a file. Similarly, https://stackoverflow.com/questions/51809549/android-access-content-file-from-intent is not a file.

https://stackoverflow.com/questions/51809549/android-access-content-file-from-intent

So how do I have to work/handle content:// files?

Use ContentResolver (from getContentResolver() on a Context) and openInputStream() to get an InputStream on the content identified by the Uri.

ContentResolver

getContentResolver()

Context

openInputStream()

InputStream

Uri

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