iphone - <Google> Must set the rootViewController property of GADBannerView before calling loadRequest: -

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i use google admob sdk in iphone app, did set rootviewcontroller property, delegate property 

self.adbannerview.rootviewcontroller = basedviewcontroller; self.adbannerview.delegate = basedviewcontroller; [self.adbannerview loadrequest:[gadrequest request]];

but keep getting message while running app:

<google> must set rootviewcontroller property of gadbannerview before calling loadrequest:

i manage 3 gadbannerview @ same time, know status of gadbannerview (does have rootviewcontroller set or not) while debugging app?

i think basedviewcontroller not created yet. step 1) create viewcontroler step 2) assign


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