1. When introducing a third-party framework afnetworking, remember to add security attributes (self-thought) to the Xcode project.
2. When loading data asynchronously, if the model is loaded with an array, remember to initialize the arrays. The assignment to the control is typically after the data is fetched. If you use TableView or Collectview, remember to refresh after fetching the data.
3. When using segue, if the index of the item corresponding to CollectionView is used, it is generally the last object to get the click Index. Such as:
Nsindexpath *path=_collectionview.selectitem.lastobject.
4. In TableView if the cell has a duplicate overlap problem, it should be removed before loading the corresponding control.
5. When encapsulating the head view of a TableView group with a class, remember to set the frame of the control to be valid only at Lauersview
Attention points for the development of high-purchase e-commerce system