Android- how can I convert android.net.Uri object to java.net.URI object?
AndroidUriAndroid BitmapFileinputstreamAndroid Problem Overview
I am trying to get a FileInputStream
object on an image that the user selects from the picture gallery. This is the android URI
returned by android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI
content://media/external/images/media/3
When I try to construct a java URI object from this object, I get an IllegalArgumentException
with the exception description Expected file scheme in URI: content://media/external/images/media/3 whereas the android URI shows the scheme as content
Update: Never found a solution for the original question. But if you want the byte stream of an image in the pictures gallery, this piece of code will do that.
Bitmap bitmap = Media.getBitmap(getContentResolver(), imageUri);
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
ByteArrayInputStream fileInputStream = new ByteArrayInputStream(bytes.toByteArray());
Android Solutions
Solution 1 - Android
You could use the toString
method of the android Uri
in combination of the String
based constructor of the Java URI
.
android.net.Uri auri = new android.net.Uri(what ever);
java.net.URI juri = new java.net.URI(auri.toString());
Solution 2 - Android
Found the correct way to open InputStream from content URI:
InputStream fileInputStream=yourContext.getContentResolver().openInputStream(uri);
That's all!
Solution 3 - Android
There is a solution to your original question (convert Uri to URI):
-
Get the real file path (look this code: https://stackoverflow.com/questions/3401579/android-get-filename-and-path-from-uri-from-mediastore)
-
Get the URI using the real path and the constructor: URI(String uri)
If you need more details, look here:
Solution 4 - Android
I voted for jgilrincon's answer. I can't comment due to low reputation, and here goes some additional info - you can use FileHelper.java from Apache Cordova project, it has functions that you need for file handling from Uri strings, considering mediastore as well (and app assets folder)
Particularly this method provides InputStream from Uri:
public static InputStream getInputStreamFromUriString(String uriString, Activity cordova)
Solution 5 - Android
Since the String constructing doesn't work have you tried just constructing it your self?
android.net.URI auri = new android.net.URI(what ever);
java.net.URI juri = new java.net.URI(auri.getSchema(),
auri.getSchemaSpecificPart(),
auri.getFragment());
You might also want to double check that your getting valid data out of Android URI class. The docs as listed in my other answer discuss how it does pretty much no error checking. If there is infact an error the class just spits out garbage anyway and doesn't throw any exceptions. Which could very likely be why the java class which does do validation is throwing an exception.