IOS项目与学习周记

IOS-Summary-20151228

1. add new controller in the tab application
   • create an tab application
   • add the view controller
   • control - drag to the new view controller
   • choose view controllers these are the steps! more you can access this post: the post link
2. change the cell format to subtitle and can change the image for the cell
   • add the image to the assets.xcassets
   • change the image name
   • in code you can access the image using it:

      image = [UIImage imageNamed:@"pass"];
     

3. unwind segue
   • define the segue in the destionation viewController
   • in the operation page you can drag the button to the exit in the top and choose the defined segue (but only when using size class are chosen)
   • in the 出发的viewController 可以在 Document outline中看到出发的viewController里定义的segue。可以加入identifier的Name，在code中就可以调用这个segue。

           [self 	performSegueWithIdentifier:@"unwindToSugerView" sender:self];
     

4. 使用tableview 来做页面layout 定义了几个section 但是想把空白的地方显示为空白，不要显示table cell。这里有个tricks： 5.tableview的头里有空白，如何消除这些空白呢，在其attribute inspector 里 uncheck the post link