Cell reuse methods and cell reuse methods

Cell reuse methods and cell reuse methods

1. Use xib for Reuse

// Recommended reuse method after ios6

// Use self dynamically to obtain the current class name as a unique identifier

NSString * identifier = NSStringFromClass ([self class]);

UINib * nib = [UINib nibWithNibName: identifier bundle: nil];

// Register

[TableView registerNib: nib forCellReuseIdentifier: identifier];

// First go to the cache pool. If there is no reusable cell in the cache pool, create a cell object based on the previously registered nib and return it to you.

GPSubjectCell * cell = [tableView dequeueReusableCellWithIdentifier: identifier];

Return cell;

 

2. Pure code

 

 

// Ensure the uniqueness of the label. Using the class name is a good choice.

NSString * identifier = @ "GPSubjectCell ";

// 1. Check whether the cache pool can be reused.

GPSubjectCell * cell = [tableView dequeueReusableCellWithIdentifier: identifier];

// 2. If no reuse is available, create one by yourself.

If (cell = nil)

{

Cell = [[self alloc] initWithStyle: UITableViewCellStyleDefault reuseIdentifier: identifier];

}

Return cell;

3.

// Use the registration mechanism to reuse the cell class with pure code

NSString * className = NSStringFromClass ([self class]);

[TableView registerClass: [self class] forCellReuseIdentifier: className];

Return [tableView dequeueReusableCellWithIdentifier: className];

 

4. When using storyboard, (but a Identifier must be provided for the cell)

Return [collectionView dequeueReusableCellWithReuseIdentifier: @ "bookCell" forIndexPath: indexPath];