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I tried to supply points from python using your data structure. Unfortunaly i get Errors because the SL4A backend tries to parse the 'extra data' as JSON or to encode it to JSON.

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import android
import sqlite3
import struct

def geostd(droid,lat,lon):
url='geo:%s,%s'% (lat,lon)
droid.startActivity('android.intent.action.VIEW',url)

def javautf(str1):
str2=str1.encode('utf8')
return struct.pack('>h',len(str2))+str2

def points2locus(points):
'''Takes a list of tuples
Name,HTML-desc,extradata,latitude,longitude,image
'''
return struct.pack('>i',len(points))+
''.join([struct.pack('>i',len(point[5]))+point[5]+
''.join([javautf(str3) for str3 in point[0:3]])+
struct.pack('>dd',point[3],point[4]) for point in points])

def geolocus(droid,points):
extras={'extraDataName':points2locus(points)}
droid.startActivity('android.intent.action.VIEW','menion.points:extraDataName', None,None, extras, False)

droid = android.Android()
sqlc = sqlite3.connect('/sdcard/wiglewifi/wiglewifi.sqlite')
cur=sqlc.cursor()
cur.execute('select * from network where ssid=? limit 10',('eduroam',))
result= cur.fetchall()
sqlc.close()

#geostd(droid,result[0][5],result[0][6])
geolocus([(row[1],row[0],'',row[5],row[6],'') for row in result])


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 request = json.dumps(data)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xff in position 43: unexpected code byte

has anyone an idea how to create und submit such datastructure in python?