Camera.choosePicture doesn't open up the image chooser

Hi,

1. Rho::Camera.choosePicture() should return full file path on device in @params["imageUri"]. So you should not make full path by Rho::Application.expandDatabaseBlobFilePath() (actually now it return empty path - this is root of issue)

2. When you call Rho::Camera.choosePicture(), Rhodes copy selected image to Application's db blob path. So in @params["imageUri"] you have full file path and it path in application's db/blob folder like this - /data/data/com.rhomobile.rhodessystemapisamples/rhodata/db/db-files/IMG_20161209_114739.jpg.
This path can be used it in WebView (in <img> etc.) without transform. But if you want to use this image file in your DB, your should transform path to local path by this code :

blob_path = Rho::Application.relativeDatabaseBlobFilePath(@params['imageUri'])


3. So in your case you should just use @params["imageUri"] without convert.
 
P.S.
  If this information not help you - describe issue more detailed : Android version, what is value in @params["imageUri"] ( add this line to callback code ->  puts 'IMAGE URI IN CALLBACK = '+@params["imageUri"])? 

Thank you Dmitry, Vladimir for quick response.


I have changed my choosePicture method :

def update
Rho::Camera.outputFormat = 'dataUri'
Rho::Camera.choosePicture({}, url_for(:action => :picture_taken_callback))
end

and my callback :

def picture_taken_callback
if (@params["status"]=="ok")
@custodian = Custodian.find(:first, :conditions =>{'custodian_id'=> $custid})
@custodian.update_attributes({'image' => @params['imageUri']})
elsif (@params["status"]=="cancel") #user cancelled operation
# do nothing
else
Alert.show_popup('Error occurred!')
end
WebView.navigate(url_for(:action => :index))
end

and now it works in device. Picture is also showing in device. However, in backend, instead of Base64 string, the picture is stored like this :

/data/user/0/com.rhomobile.pamimageupload/rhodata/db/db-files/IMG_20161213_032750.jpg


The image chooser still does not open in RhoSimulator

My takePicture method, however, works flawlessly, image is captured and stored as Base64 in device and also synced as Base64 in backend :

data:image/jpeg;base64,/9j/4UFTRXhpZgAATU0AKgAAAAgACAEPAAIAAAAHAAAAbgEQAA <snipped for brevity sake>

Here is my takePicture method which calls same callback as choosePicture :

def new
if !defined? Rho::Camera
Alert.show_popup('Camera is not supported on this platform!')
render :action => :index
else
cameras = Rho::Camera.enumerate
if cameras.length == 0
Alert.show_popup('No camera!')
render :action => :index
else
camera = cameras[0] #Use default camera
camera.outputFormat = 'dataUri'
camera.takePicture({}, url_for(:action => :picture_taken_callback))
end
end
end

Here's my show.erb :

<li>
<div class="itemLabel">Image</div>
<div class="itemValue"><img src="<%= @custodian.image %>" width="300px" /></div>
</li>


I use generated model file without modification :

Model file (custodian.rb)
-------------------------

# The model has already been created by the framework, and extends Rhom::RhomObject
# You can add more methods here
class Custodian
include Rhom::PropertyBag

# Uncomment the following line to enable sync with Custodian.
enable :sync

#add model specific code here
end

So, why is takePicture generating the Base64 string for the image and choosePicture does not?

I don't expect takePicture to work in Rhosimulator, but choosePicture should work. At least in old Rhodes it was working (it was choose_picture). Anyway, that's not my primary concern now (I should have rephrased my thread topic). My primary concern is why with outputFormat set to dataURI, choosePicture is not giving me the Base64 string of the image and giving me the path to the blob instead while takePicture is giving me the string correctly.



Dmitry has already explained that Rho::Camera.choosePicture() should return full file path on device in @params["imageUri"]. But I used Camera.output format='dataURI' before calling choosePicture, but it doesn't seem to give me the base64 string.



Obviously, there's something wrong with my code above.

Would be thankful if anyone can point out what I'm doing wrong. Basically I need the base64 representation of the image to be stored in device and back end SQL server database field (when synced). For that,my takePicture code works. But choosePicture doesn't. It instead stores the path to the blob file in my SQL Server backend which I don't require. I require the base64 representation of the image. I expected dataURI to convert the image to base64 string, I don't understand why it works in takePicture but not choosePicture. Hope I'm making myself clear.