UITableView attributes and Methods

1. initialize a UITableView

1 - (id)initWithFrame:(CGRect)frame style:(UITableViewStyle)style

1 struct CGRect {2    CGPoint origin;3    CGSize size;4 };5 typedef struct CGRect CGRect;

1 typedef enum {2 UITableViewStylePlain, // tile Style 3 UITableViewStyleGrouped // group style 4} UITableViewStyle;

 

2. configure a TableView

1) return the TableView style (read-only attribute)

1 @property(nonatomic, readonly) UITableViewStyle style

 

2) returns the number of cells in the specified section.

1 - (NSInteger)numberOfRowsInSection:(NSInteger)section

 

When TableView is in UITableViewStylePlain, the section should be 0

3) returns the number of TableView sections.

1 - (NSInteger)numberOfSections

 

4) set the height of all cells in TableView.

1 @property(nonatomic) CGFloat rowHeight

 

Apple recommends that you use the proxy method tableView: heightForRowAtIndexPath: instead of rowHeight to improve TableView performance.

5) set the style of the separation line of TableView

1 @property(nonatomic) UITableViewCellSeparatorStyle separatorStyle

1 typedef enum: NSInteger {2 UITableViewCellSeparatorStyleNone, // No separator line 3 Gb/s, // single split line 4 Gb/s // eroded but separator line 5} UITableViewCellSeparatorStyle;

 

6) set the separation line color of TableView

1 @property(nonatomic, retain) UIColor *separatorColor

 

7) set the background view of TableView

1 @property(nonatomic, readwrite, retain) UIView *backgroundView

 

8) set the separation line offset of TableView

1 @property (nonatomic) UIEdgeInsets separatorInset2 //Available in iOS 7.0 and later.

 

Apple example

1 tableView. separatorInset = UIEdgeInsetsMake (0, 3, 0, 11); 2 // top, left, bottom, right

 

 

3. Create a TableView Cell

1) register a nib object that contains a Cell with the specified identifier TableView.

1-(void) registerNib :( UINib *) nib forCellReuseIdentifier :( NSString *) identifier // the two parameters cannot be nil2 // Available in iOS 5.0 and later.

 

2) register a class to create a Cell

1 - (void)registerClass:(Class)cellClass forCellReuseIdentifier:(NSString *)identifier2 //Available in iOS 6.0 and later.

 

3) return reusable cells with the specified identifier

1 - (id)dequeueReusableCellWithIdentifier:(NSString *)identifier forIndexPath:(NSIndexPath *)indexPath2 //Available in iOS 6.0 and later.

 

Note: before using this method, you must use registerNib: forCellReuseIdentifier: Or registerClass: forCellReuseIdentifier: The method registers the Cell.

4) return reusable cells with the specified identifier

1 - (id)dequeueReusableCellWithIdentifier:(NSString *)identifier

 

4. Access the view at the header and end of the table

1) register a nib object that contains the specified identifier table view at the header or end of the table.

1 - (void)registerNib:(UINib *)nib forHeaderFooterViewReuseIdentifier:(NSString *)identifier2 //Available in iOS 6.0 and later.

 

2) register a class to create a new table view that contains the header or the end of the table.

1 - (void)registerClass:(Class)aClass forHeaderFooterViewReuseIdentifier:(NSString *)identifier2 //Available in iOS 6.0 and later.

 

3) returns a reusable view with the end of the header table with the specified identifier.

1 - (id)dequeueReusableHeaderFooterViewWithIdentifier:(NSString *)identifier2 //Available in iOS 6.0 and later.

 

4) set or return the table header view.

1 @property(nonatomic, retain) UIView *tableHeaderView

 

5) set or return the end view of the table.

1 @property(nonatomic, retain) UIView *tableFooterView

 

6) set or return the table header height

1 @property(nonatomic) CGFloat sectionHeaderHeight

 

7) set or return the end height of the table.

1 @property(nonatomic) CGFloat sectionFooterHeight

 

8) returns the header view of the specified section.

1 - (UITableViewHeaderFooterView *)headerViewForSection:(NSInteger)section2 //Available in iOS 6.0 and later.

 

9) returns the end view of the table of the specified section.

1 - (UITableViewHeaderFooterView *)footerViewForSection:(NSInteger)section2 //Available in iOS 6.0 and later.

 

 

5. Access Cell and Section

1) return the Cell of the specified indexPath

1 - (UITableViewCell *)cellForRowAtIndexPath:(NSIndexPath *)indexPath

 

2) returns the IndexPath of the specified Cell.

1 - (NSIndexPath *)indexPathForCell:(UITableViewCell *)cell

 

3) returns the IndexPath of the specified vertex.

1 - (NSIndexPath *)indexPathForRowAtPoint:(CGPoint)point

 

4) returns an array consisting of IndexPath in the specified region.

1 - (NSArray *)indexPathsForRowsInRect:(CGRect)rect

 

5) returns an array composed of visible uitableviewcells.

1 - (NSArray *)visibleCells

 

6) returns an array consisting of IndexPath of the rows in the visible table.

1 - (NSArray *)indexPathsForVisibleRows

 

6. Estimate the height of an element

1) set the estimated height of table rows to improve performance

1 @property (nonatomic) CGFloat estimatedRowHeight2 //The default value is 0, which means there is no estimate.3 //Available in iOS 7.0 and later.

 

2) set the height of the Section header to improve performance

1 @property(nonatomic) CGFloat estimatedSectionHeaderHeight2 //The default value is 0, which means there is no estimate.3 //Available in iOS 7.0 and later.

 

3) set the ancient capitals at the end of the Section to improve performance.

1 @property(nonatomic) CGFloat estimatedSectionFooterHeight2 //The default value is 0, which means there is no estimate.3 //Available in iOS 7.0 and later.

7. Scroll through TableView

1) scroll to the specified position

1 - (void)scrollToRowAtIndexPath:(NSIndexPath *)indexPath atScrollPosition:(UITableViewScrollPosition)scrollPosition animated:(BOOL)animated

1 typedef enum {2    UITableViewScrollPositionNone,3    UITableViewScrollPositionTop,4    UITableViewScrollPositionMiddle,5    UITableViewScrollPositionBottom6 } UITableViewScrollPosition;

 

 

 

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