def gui(maps_M):
xmaps_M = []
droid = Android()
droid.dialogCreateAlert('Checkbox')
droid.dialogSetMultiChoiceItems(maps_M)
droid.dialogSetPositiveButtonText('Download')
droid.dialogShow()
while not droid.dialogGetResponse().result['which'] == 'positive':
pass
xmaps_num = droid.dialogGetSelectedItems().result
print(xmaps_num)
for i in xmaps_num:
xmaps_M.append(maps_M[i])
return xmaps_M
