iOS Development-Customize cell-Group purchase list by Xib

Custom cell
1. By xib
1> be careful to set the reuse identity in the Xib cell (reuse identifier)
Steps for 2> Encapsulation
* For inheritance, re-drag TableView, then implement the data source method
* New Xib describes what the cell looks like---dealcell.xib and sets the cell's height to 80, then drag the control
* New UITableViewCell Subclass---dealcell (used to encapsulate everything inside the xib)
* Change the class of cell in Xib to Dealcell
* All child controls in the Xib are owned in Dealcell (declare properties, connect)
* Each group has a lot of data, so each group buys a model, so the new model deal, encapsulates the data (because only attributes, so inherit from NSObject), in Deal.h declaration of each cell 5 attributes (one of which is the bool type)
* Add deal model properties to Dealcell, and the cell's child controls show what data depends on the data in the model's properties
@property (Nonatomic,strong) Deal *deal;
* Import Deal.h in dealcell.m and override Setdeal: method to set properties of the cell inner child control in this method based on model data
-(void) Setdeal: (Deal *) Deal
{
_deal = deal;

1. Title
_titlelabel.text = Deal.title;

2. Number of buyers
_buylabel.text = [NSString stirngwithformat:@ "Purchase:%d", dela.buy];

3. Price
_pricelabel.text = [NSString stirngwithformat:@ "Price:%d", Dela.price];

4. Picture
_iconview.image = [UIImage ImageNamed:deal.icon];

5. Whether to display the latest
_dealnewview.hidden =! Deal.isnew;
}

* Creating a class method in Dealcell quickly returns a xib created Cell object, so creating a cell requires only calling this class method.
+ (ID) Dealcell
{
return [[NSBundle Mainbundle] loadnibnamed:@ "Dealcell" Owner:nil options:nil][0];
}
After the creation, call the set method to pass the data.

* Add a reuse identity to the cell in Xib deal
A class method ID is then created in Dealcell to return the identity, which is called directly when the identity is set.
Then create a method cellheight returns the cell's height. (So the controller does not have to change the code, it is only responsible for invoking this method.) To change directly in the method. ）

* Import Deal.h and DealCell.h in the controller implementation file
Declare an array member variable in the class extension _deals
In the Viewdidload
Deal *d1 = ....

_deals = @[d1, .... ]；

and implement the data source method
-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section
{
return _deals.count;
]

-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath
{
1. Cache pool out of cell
Dealcell *cell = [TableView Dequeuereusablecellwithidentifier:[dealcell ID]];
2. The cache pool is not re-created
if (cell = = nil) {
cell = [Dealcell Dealcell];
}
3. Transfer model
Cell.deal = _deals[indexpath.row];

return cell;
}

3> using the cell
* Set the height of each row of cells
* Use the reuse identity to go to the cache pool to get the cell
* If the cache pool does not have a cell, create a cell
* Transfer model to cell

iOS Development-Customize cell-Group purchase list by Xib