IOS8 new features to calculate cell height

http://tutuge.me/2015/08/08/autolayout-example-with-masonry2/

1.tableview:

Automatically calculates the height of the TableVIew cell:

1. When creating the TableView:

Tableview.rowheight = Uitableviewautomaticdimension; (automatically gets the height of the cell)

2. In the Heightforrowatindexpath: method, return directly: Uitableviewautomaticdimension.

#define Ios8_target

#ifdef Ios8_target

// Here's what to do when judging more than iOS8 .

#endif

How to calculate before IOS 8:

[Cell.contentview systemlayoutsizefittingsize:uilayoutfittingcompressedsize].height + 0.5;

 [_templatecell.Contentviewsystemlayoutsizefittingsize:uilayoutfittingcompressedsize].Height + 0.5f 

IOS8 new features to calculate cell height