Template auto layout cell for automatically UITableViewCell height calculating.

If you have a self-satisfied cell, then all you have to do is:

#import "UITableView+FDTemplateLayoutCell.h"

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return [tableView fd_heightForCellWithIdentifier:@"reuse identifer" configuration:^(id cell) {
        // Configure this cell with data, same as what you've done in "-tableView:cellForRowAtIndexPath:"
        // Like:
        //    cell.entity = self.feedEntities[indexPath.row];
    }];
}

Since iOS8, -tableView:heightForRowAtIndexPath: will be called more times than we expect, we can feel these extra calculations when scrolling. So we provide another extension with caches:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return [tableView fd_heightForCellWithIdentifier:@"identifer" cacheByIndexPath:indexPath configuration:^(id cell) {
        // configurations
    }];
}

Extra calculations will be saved if a height at an index path has been cached, besides, NO NEED to worry about invalidating cached heights when data source changes, it will be done automatically when you call "-reloadData" or any method that triggers UITableView's reloading.

a fully self-satisfied cell is constrainted by auto layout and each edge("top", "left", "bottom", "right") has at least one layout constraint against it.

A bad one :( - missing right and bottom

A good one :)

pod search UITableView+FDTemplateLayoutCell 

MIT