I am not sure why layers are being added twice here?
Code:
import arcpy
from arcpy import env
import pythonaddins
class ButtonClass1(object):
"""Implementation for add_Layers_addin.button (Button)"""
def __init__(self):
self.enabled = True
self.checked = False
def onClick(self):
#set the map document reference
mxd = arcpy.mapping.MapDocument("CURRENT")
#set the dataframe reference using the map document and the first data frame in the list
df = arcpy.mapping.ListDataFrames(mxd)[0]
#set the layer reference using the map document reference and the first layer in the list of layers
layer1 = arcpy.mapping.ListLayers(mxd)[0]
symbologyLayer = r'G:\Texas\Potter-Randall\Database\Ownership.lyr'
#create a search cursor to get relevant information about a parcel
sc = arcpy.SearchCursor(layer1)
#for loop to get the selected data
for row in sc:
#select the relevant fields to be put on the map
ap = row.getValue("MAP_NUMBER")
addLayer = arcpy.mapping.Layer(r'G:\Texas\Potter-Randall\Database' + '\\' + str(ap) + '\\' + str(ap) + ".gdb" + '\\' + str(ap))
arcpy.ApplySymbologyFromLayer_management (addLayer, symbologyLayer)
arcpy.mapping.AddLayer(df, addLayer, "TOP")
#zoom to selected features
df.zoomToSelectedFeatures()
#refresh the active view
arcpy.RefreshActiveView()
#delete map, layer and dataframe variables
del mxd
del layer
del df
del ap
del sc
del row