iOS get photos with alassets

In iOS9 to get local picture resources through the photos framework, it is Apple's current method, and the previous alassetslibrary framework is obsolete, but since IOS9 is now released shortly iOS8 and iOS7 have a certain amount of proportion, so this outdated framework, We also need to figure out how to consolidate the alassetslibrary framework.

1. What is the Alassetslibrary framework

In short, Alassetslibrary is a bridge through which our iOS app accesses native videos and photos, which allows us to easily get basic details about videos and photos.

2. Basic Use Method

　　　　In the use of alassetslibrary, we first need to import the Alassetslibrary framework, and the way to import alassetslibrary framework is usually the first linked and then #import<> However, we can also import directly using @import, without the need for linked.

1> Get album album by Alassetslibrary: Alassetsgroup

2>. Get more information about pictures in albums by Alassetsgroup: Alassets

3. Problem solving

　　　　After obtaining the picture resource through Alassetslibrary, it is displayed in chronological order in another TableView, where a picture is encountered that shows an incorrect problem:

1> When you first display the pull-up and pull-down will be added ImageView, then I think it is in the refactoring set method every time the helper set method will be added, so I got a global bool type, let it only add once.

2> When you add only one time, you find that the image resource data is only the initial display of the 5, so I am thinking about the model is wrong, a simple test code, the model is right.

3>. When the model is correct, the picture is still not improved effectively, so I write a simple test code to check the correctness of the model again every time I call the Set method.

4>: When the initial place of the set method, that is, the return of the UITableViewCell in the pull-up and pull-down, confirms the correctness of the model, I go to the set method to find the correctness of the model, and found that it is wrong.

Since I used the method of creating only one uitableviewcell from the beginning to the end UITableView, and repeated the application in the pull down, so that the data in each of the only 5, because it was created only once, so when I get the data is the repetition of 5, As to why it was created only once was due to my first solution.

iOS get photos with alassets