IOS 构造和使用TableView(基于storyboard) （七）移动cell和section

数据源的加载

我们加载3个Section，每个section有3个Cell

从视图头文件开始

#import <UIKit/UIKit.h>@interface myTableViewController : UITableViewController<UITableViewDelegate,UITableViewDataSource>@property (strong, nonatomic) IBOutlet UITableView *myTable;@property (nonatomic, strong) NSMutableArray *arrayOfSections;@end

定义一个数据填充方法

- (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;}

初始化

- (void)viewDidLoad{    [super viewDidLoad];        arrayOfSections = [[NSMutableArray alloc]init];    NSMutableArray *section0 = [self newSectionWithIndex:1 withCellCount:3];    NSMutableArray *section1 = [self newSectionWithIndex:2 withCellCount:3];    NSMutableArray *section2 = [self newSectionWithIndex:3 withCellCount:3];    [arrayOfSections addObject:section0];    [arrayOfSections addObject:section1];    [arrayOfSections addObject:section2];}

定义Section数

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    NSInteger result = 0;    if ([tableView isEqual:self.myTable]) {        result = (NSInteger)[self.arrayOfSections count];    }    return result;}

定义row数

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    NSInteger result = 0;    if ([tableView isEqual:self.myTable]) {        if ([self.arrayOfSections count]>section) {            NSMutableArray *sectionArray = [self.arrayOfSections objectAtIndex:section];            result = (NSInteger)[sectionArray count];        }    }    return result;}

填充数据

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    UITableViewCell *result = nil;    if ([tableView isEqual:self.myTable]) {        static NSString *TableViewCellIdentifier = @"MyCells";        result = [tableView dequeueReusableCellWithIdentifier:TableViewCellIdentifier];        if (result == nil) {            result = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:TableViewCellIdentifier];        }        NSMutableArray *sectionArray = [self.arrayOfSections objectAtIndex:indexPath.section];        result.textLabel.text = [sectionArray objectAtIndex:indexPath.row];    }    return result;}

数据填充完毕

移动Section主要是通过调用moveSection:toSection:方法

 - (void) moveSection:(NSInteger)S1 ToSection:(NSInteger)S2{    NSMutableArray *section = [self.arrayOfSections objectAtIndex:0];    [self.arrayOfSections removeObject:section];    [self.arrayOfSections insertObject:section atIndex:S2];    [self.myTable moveSection:S1 toSection:S2];} 

在选中某个Cell时执行移动

- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{    if ([tableView isEqual:self.myTable]) {        [self moveSection:1 ToSection:0];    }}

效果如下

 

移动Cell

- (void)moveCell:(NSInteger)C1 InSection:(NSInteger)S1 ToCell:(NSInteger)C2 InSection:(NSInteger)S2{    NSMutableArray *section1 = [self.arrayOfSections objectAtIndex:S1];    NSMutableArray *section2 = [self.arrayOfSections objectAtIndex:S2];    NSString *cell2InSection1 = [section1 objectAtIndex:C2];    [section1 removeObject:cell2InSection1];    [section2 insertObject:cell2InSection1 atIndex:C1];    NSIndexPath *sourceIndexPath = [NSIndexPath indexPathForRow:C1 inSection:S1];    NSIndexPath *destinationIndexPath = [NSIndexPath indexPathForRow:C2 inSection:S2];    [self.myTable moveRowAtIndexPath:sourceIndexPath toIndexPath:destinationIndexPath];}

点击Cell时触发

- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{    if ([tableView isEqual:self.myTable]) {        [self moveCell:0 InSection:0 ToCell:0 InSection:1];    }}

效果如下