Mobile Section and Cell of UITableView in IOS development (28)

1 Preface
Today, let's learn how to move Section and Cell in the UITableView control.

2. code example
ZYViewController. h

 

[Plain] # import <UIKit/UIKit. h>
 
@ Interface ZYViewController: UIViewController <UITableViewDelegate, UITableViewDataSource>
 
@ Property (nonatomic, strong) UITableView * myTableView;
@ Property (nonatomic, strong) NSMutableArray * arrayOfSections; // Data Source
 
 
@ End

# Import <UIKit/UIKit. h>

@ Interface ZYViewController: UIViewController <UITableViewDelegate, UITableViewDataSource>

@ Property (nonatomic, strong) UITableView * myTableView;
@ Property (nonatomic, strong) NSMutableArray * arrayOfSections; // Data Source

@ End
ZYViewController. m

 

[Plain] @ synthesize myTableView;
@ Synthesize arrayOfSections;
 
// Initialize the content of each Cell of the Data Source
-(NSMutableArray *) newSectionWithIndex :( NSUInteger) paramIndex withCellCount :( NSUInteger) paramCellCount {
NSMutableArray * result = [[NSMutableArray alloc] init];
NSUInteger counter = 0;
For (counter = 0; counter <paramCellCount; counter ++ ){
[Result addObject: [[NSString alloc] initWithFormat: @ "Section % lu Cell % lu", (unsigned long) paramIndex, (unsigned long) counter + 1];
}
Return result;
}
 
-(Void) viewDidLoad
{
[Super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Initialize the data source
ArrayOfSections = [[NSMutableArray alloc] init];
NSMutableArray * section1 = [self newSectionWithIndex: 1 withCellCount: 3];
NSMutableArray * section2 = [self newSectionWithIndex: 2 withCellCount: 3];
NSMutableArray * section3 = [self newSectionWithIndex: 3 withCellCount: 3];
[ArrayOfSections addObject: section1];
[ArrayOfSections addObject: section2];
[ArrayOfSections addObject: section3];
MyTableView = [[UITableView alloc] initWithFrame: self. view. bounds style: UITableViewStyleGrouped];
Self. myTableView. autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// Add a proxy
MyTableView. delegate = self;
MyTableView. dataSource = self;
// Add the right button
Self. navigationItem. rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle: @ "MoveSection" style: UIBarButtonItemStylePlain target: self action: @ selector (movewSection1ToSection3)]
// Add the left button
Self. navigationItem. leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle: @ "MoveCell" style: UIBarButtonItemStylePlain target: self action: @ selector (timer)];
[Self. view addSubview: myTableView];

}
// Number of lines in a Section
-(NSInteger) numberOfSectionsInTableView :( UITableView *) tableView {
NSInteger result = 0;
If ([tableView isEqual: myTableView]) {
Result = (NSInteger) [self. arrayOfSections count];
}
Return result;
}
// Number of Cell lines in each Section
-(NSInteger) tableView :( UITableView *) tableView numberOfRowsInSection :( NSInteger) section {
NSInteger result = 0;
If ([tableView isEqual: myTableView]) {
If ([arrayOfSections count]> section ){
NSMutableArray * sectionArray = [self. arrayOfSections objectAtIndex: section];
Result = (NSInteger) [sectionArray count];
}
}
Return result;
}
// Set the content of each Cell line
 
-(UITableViewCell *) tableView :( UITableView *) tableView cellForRowAtIndexPath :( NSIndexPath *) indexPath {
UITableViewCell * result = nil;
If ([tableView isEqual: myTableView]) {
Static NSString * CellIdentifier = @ "CellIdentifier ";
Result = [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleDefault reuseIdentifier: CellIdentifier];
}
NSMutableArray * sectionArray = [self. arrayOfSections objectAtIndex: indexPath. section];
Result. textLabel. text = [sectionArray objectAtIndex: indexPath. row];
Return result;
}
// Move the Section of the first index to the last position.
-(Void) movewSection1ToSection3 {
NSMutableArray * section1 = [self. arrayOfSections objectAtIndex: 0];
[Self. arrayOfSections removeObject: section1];
[Self. arrayOfSections addObject: section1];

[MyTableView moveSection: 0 toSection: 2];
}
// Swap the first Cell and the second Cell in the first Section
-(Void) moveCell1InSectionToCell2InSection1 {
NSMutableArray * section1 = [self. arrayOfSections objectAtIndex: 0];
NSString * cell1InSection1 = [section1 objectAtIndex: 0];
[Section1 removeObject: cell1InSection1];
[Section1 insertObject: cell1InSection1 atIndex: 1];
NSIndexPath * sourceIndexPath = [NSIndexPath indexPathForRow: 0 inSection: 0];
NSIndexPath * destinationIdexPath = [NSIndexPath indexPathForRow: 1 inSection: 0];
[Self. myTableView moveRowAtIndexPath: sourceIndexPath toIndexPath: destinationIdexPath];
}
// Move the second Cell of the first Section to the position before the first Cell of the second Section
-(Void) moveCell2InSectionToCellInSection2 {
NSMutableArray * section1 = [arrayOfSections objectAtIndex: 0];
NSMutableArray * section2 = [arrayOfSections objectAtIndex: 1];

NSString * cell2InSection1 = [section1 objectAtIndex: 1];
[Section1 removeObject: cell2InSection1];
[Section2 insertObject: cell2InSection1 atIndex: 0];

NSIndexPath * sourceIndexPath = [NSIndexPath indexPathForRow: 1 inSection: 0];
NSIndexPath * destinationIndexPath = [NSIndexPath indexPathForRow: 0 inSection: 1];

[MyTableView moveRowAtIndexPath: sourceIndexPath toIndexPath: destinationIndexPath];
}

@ Synthesize myTableView;
@ Synthesize arrayOfSections;

// Initialize the content of each Cell of the Data Source
-(NSMutableArray *) newSectionWithIndex :( NSUInteger) paramIndex withCellCount :( NSUInteger) paramCellCount {
NSMutableArray * result = [[NSMutableArray alloc] init];
NSUInteger counter = 0;
For (counter = 0; counter <paramCellCount; counter ++ ){
[Result addObject: [[NSString alloc] initWithFormat: @ "Section % lu Cell % lu", (unsigned long) paramIndex, (unsigned long) counter + 1];
}
Return result;
}

-(Void) viewDidLoad
{
[Super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Initialize the data source
ArrayOfSections = [[NSMutableArray alloc] init];
NSMutableArray * section1 = [self newSectionWithIndex: 1 withCellCount: 3];
NSMutableArray * section2 = [self newSectionWithIndex: 2 withCellCount: 3];
NSMutableArray * section3 = [self newSectionWithIndex: 3 withCellCount: 3];
[ArrayOfSections addObject: section1];
[ArrayOfSections addObject: section2];
[ArrayOfSections addObject: section3];
MyTableView = [[UITableView alloc] initWithFrame: self. view. bounds style: UITableViewStyleGrouped];
Self. myTableView. autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// Add a proxy
MyTableView. delegate = self;
MyTableView. dataSource = self;
// Add the right button
Self. navigationItem. rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle: @ "MoveSection" style: UIBarButtonItemStylePlain target: self action: @ selector (movewSection1ToSection3)]
// Add the left button
Self. navigationItem. leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle: @ "MoveCell" style: UIBarButtonItemStylePlain target: self action: @ selector (timer)];
[Self. view addSubview: myTableView];

}
// Number of lines in a Section
-(NSInteger) numberOfSectionsInTableView :( UITableView *) tableView {
NSInteger result = 0;
If ([tableView isEqual: myTableView]) {
Result = (NSInteger) [self. arrayOfSections count];
}
Return result;
}
// Number of Cell lines in each Section
-(NSInteger) tableView :( UITableView *) tableView numberOfRowsInSection :( NSInteger) section {
NSInteger result = 0;
If ([tableView isEqual: myTableView]) {
If ([arrayOfSections count]> section ){
NSMutableArray * sectionArray = [self. arrayOfSections objectAtIndex: section];
Result = (NSInteger) [sectionArray count];
}
}
Return result;
}
// Set the content of each Cell line

-(UITableViewCell *) tableView :( UITableView *) tableView cellForRowAtIndexPath :( NSIndexPath *) indexPath {
UITableViewCell * result = nil;
If ([tableView isEqual: myTableView]) {
Static NSString * CellIdentifier = @ "CellIdentifier ";
Result = [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleDefault reuseIdentifier: CellIdentifier];
}
NSMutableArray * sectionArray = [self. arrayOfSections objectAtIndex: indexPath. section];
Result. textLabel. text = [sectionArray objectAtIndex: indexPath. row];
Return result;
}
// Move the Section of the first index to the last position.
-(Void) movewSection1ToSection3 {
NSMutableArray * section1 = [self. arrayOfSections objectAtIndex: 0];
[Self. arrayOfSections removeObject: section1];
[Self. arrayOfSections addObject: section1];

[MyTableView moveSection: 0 toSection: 2];
}
// Swap the first Cell and the second Cell in the first Section
-(Void) moveCell1InSectionToCell2InSection1 {
NSMutableArray * section1 = [self. arrayOfSections objectAtIndex: 0];
NSString * cell1InSection1 = [section1 objectAtIndex: 0];
[Section1 removeObject: cell1InSection1];
[Section1 insertObject: cell1InSection1 atIndex: 1];
NSIndexPath * sourceIndexPath = [NSIndexPath indexPathForRow: 0 inSection: 0];
NSIndexPath * destinationIdexPath = [NSIndexPath indexPathForRow: 1 inSection: 0];
[Self. myTableView moveRowAtIndexPath: sourceIndexPath toIndexPath: destinationIdexPath];
}
// Move the second Cell of the first Section to the position before the first Cell of the second Section
-(Void) moveCell2InSectionToCellInSection2 {
NSMutableArray * section1 = [arrayOfSections objectAtIndex: 0];
NSMutableArray * section2 = [arrayOfSections objectAtIndex: 1];

NSString * cell2InSection1 = [section1 objectAtIndex: 1];
[Section1 removeObject: cell2InSection1];
[Section2 insertObject: cell2InSection1 atIndex: 0];

NSIndexPath * sourceIndexPath = [NSIndexPath indexPathForRow: 1 inSection: 0];
NSIndexPath * destinationIndexPath = [NSIndexPath indexPathForRow: 0 inSection: 1];

[MyTableView moveRowAtIndexPath: sourceIndexPath toIndexPath: destinationIndexPath];
}
Running result:

 
 

Click the button on the right:

 
 

Click the button on the left to see the effect: