如何实现tableViewCell扩张与缩小的淡入淡出效果

直接上代码

@implementation ViewController
{
UITableView *_rightTableView;
UITableView *_leftTableView;
NSArray *_leftTableSource;
NSArray *_rightTableSource;

}
初始化数据源
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_leftTableSource = @[@"11",@"22",@"33",@"44",@"55",@"66"];
_rightTableSource =@[@{@"header":@"11",@"title":@[@"aa",@"bb",@"cc",@"dd",@"ee",@"ff"]},
@{@"header":@"22",@"title":@[@"gg",@"mm",@"nn",@"oo",@"pp",@"qq"]},
@{@"header":@"33",@"title":@[@"rr",@"ss",@"jj",@"xx",@"yy",@"zz"]},
@{@"header":@"44",@"title":@[@"aa",@"bb",@"cc",@"dd",@"ee",@"ff"]},
@{@"header":@"55",@"title":@[@"gg",@"mm",@"nn",@"oo",@"pp",@"qq"]},
@{@"header":@"66",@"title":@[@"rr",@"ss",@"jj",@"xx",@"yy",@"zz"]}];

[self setupSomeParamars];
}