TableView Edit

最新推荐文章于 2021-04-20 10:57:17 发布

原创最新推荐文章于 2021-04-20 10:57:17 发布 · 360 阅读

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本文详细介绍了iOS开发中Swift和Objective-C两种编程语言的应用技巧，包括语言特性、最佳实践和常见错误排查。通过实战案例，帮助开发者提升iOS应用开发效率。

// RootViewController.m

#import "RootViewController.h"

@interfaceRootViewController()<UITableViewDelegate,UITableViewDataSource>

@property (nonatomic,strong)UITableView*tableView;

@property (nonatomic,strong)NSMutableArray*mArr;

@property(nonatomic,strong)NSMutableDictionary *mDic;

@property (nonatomic,strong)NSMutableDictionary*imageDic;

@property (nonatomic,strong)NSMutableArray*imageArr;

@end

@implementationRootViewController

- (void)viewDidLoad {

[superviewDidLoad];

self.title = @"suprise";

// 创建tableView

self.tableView = [[UITableViewalloc]initWithFrame:[UIScreenmainScreen].boundsstyle:UITableViewStylePlain];

// 设置分割线颜色

self.tableView.separatorColor =[UIColorredColor];

//设置分割线格式

self.tableView.separatorStyle =UITableViewCellSeparatorStyleSingleLine;

//设置代理

self.tableView.dataSource = self;

self.tableView.delegate = self;

//添加到试图上

[self.viewaddSubview:self.tableView];

// 给导航栏右边加一分编辑按钮，(编辑按钮是UIViewController自带的)

self.navigationItem.rightBarButtonItem =self.editButtonItem;

self.tableView.backgroundColor = [UIColorredColor];

// 获取数据

[selfgetDate];

self.tableView.rowHeight = 150;

}

// 一、编辑的四步

//1、进入编辑状态

// 2、确定哪些cell可以被编辑

// 3、确定编辑模式

// 4、完成编辑

// 1、点击右按钮触发的编辑方法(既可以添加删除，又可以移动)

- (void)setEditing:(BOOL)editinganimated:(BOOL)animated{

[supersetEditing:editinganimated:animated];

// 将tableView置为编辑模式下。

[self.tableViewsetEditing:editinganimated:animated];

}

// 2、设置可以被编辑的cell

- (BOOL)tableView:(UITableView*)tableViewcanEditRowAtIndexPath:(NSIndexPath *)indexPath{

return YES;

}

// 3、设置编辑模式

-(UITableViewCellEditingStyle)tableView:(UITableView*)tableVieweditingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{

if (indexPath.section == 0) {

returnUITableViewCellEditingStyleInsert;

}

returnUITableViewCellEditingStyleDelete;

}

//4、完成编辑

- (void)tableView:(UITableView*)tableViewcommitEditingStyle:(UITableViewCellEditingStyle)editingStyleforRowAtIndexPath:(NSIndexPath*)indexPath{

// 先操作数据，再操作UI(控件)

if (editingStyle ==UITableViewCellEditingStyleDelete){

[self.mDic[self.mArr[indexPath.section]] removeObjectAtIndex:

indexPath.row];

[self.imageDic[self.imageArr[indexPath.section]] removeObjectAtIndex:

indexPath.row];

if([self.mDic[self.mArr[indexPath.section]] count] == 0) {

// 删除键值对

[self.mDicremoveObjectForKey:self.mArr[indexPath.section]];

[self.imageDicremoveObjectForKey:self.imageArr[indexPath.section]];

// //删除分组

[self.mArrremoveObjectAtIndex:indexPath.section];

[self.imageArrremoveObjectAtIndex:indexPath.section];

// 删除分区(删除控件)

[tableViewdeleteSections:[NSIndexSetindexSetWithIndex:indexPath.section]withRowAnimation:UITableViewRowAnimationLeft];

}

// else{

// // 先操作数据

// NSString *key = self.mArr[indexPath.section];

// NSMutableArray *arr = self.mDic[key];

// [arrinsertObject:@"布鲁克" atIndex:indexPath.row];

//// NSString *key1 = self.imageArr[indexPath.section];

//// NSMutableArray *arr1 = self.imageDic[key1];

//// [arr1insertObject:[UIImageimageNamed:@"h2.jpeg"]atIndex:indexPath.row];

// // 再操作UI

// [tableViewinsertRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationBottom];

// }

[self.tableViewreloadData];

}

// 二、移动的三个步骤

// 1、设置处于编辑状态

// 2、设置哪些cell可以被编辑

//3、编辑过程

//2、设置哪些cell可编辑(移动)

- (BOOL)tableView:(UITableView*)tableViewcanMoveRowAtIndexPath:(NSIndexPath *)indexPath{

if (indexPath.section == 0) {

return NO;

}

return YES;

}

// 3、移动过程

- (void)tableView:(UITableView*)tableViewmoveRowAtIndexPath:(NSIndexPath*)sourceIndexPathtoIndexPath:(NSIndexPath *)destinationIndexPath{

//获取起始点数组

NSMutableArray *arrSource =self.mDic[self.mArr[sourceIndexPath.section]];

NSMutableArray *imageArrSource =self.imageDic[self.imageArr[sourceIndexPath.section]];

// 获取终点数组

NSMutableArray *arrDesti =self.mDic[self.mArr[destinationIndexPath.section]];

NSMutableArray *imageArrDesti =self.imageDic[self.mArr[destinationIndexPath.section]];

// 先将cell对应的数据用字符串存储

NSString *str =arrSource[sourceIndexPath.row];

NSString *strImage =imageArrSource[sourceIndexPath.row];

// 删除数据

[arrSourceremoveObject:arrSource[sourceIndexPath.row]];

[imageArrSourceremoveObject:imageArrSource[sourceIndexPath.row]];

//插入数据

[arrDestiinsertObject:stratIndex:destinationIndexPath.row];

[imageArrDestiinsertObject:strImageatIndex:destinationIndexPath.row];

if ([arrSource count] == 0) {

// 删除空数组

[self.mDicremoveObjectForKey:self.mArr[sourceIndexPath.section]];

[self.imageDicremoveObjectForKey:self.imageArr[sourceIndexPath.section]];

// 删除头标题

[self.mArrremoveObjectAtIndex:sourceIndexPath.section];

[self.imageArrremoveObjectAtIndex:sourceIndexPath.section];

// 删除分区

[tableViewdeleteSections:[NSIndexSetindexSetWithIndex:sourceIndexPath.section]withRowAnimation:UITableViewRowAnimationFade];

}

// 重新加载数据，刷新视图

[self.tableViewreloadData];

// // 刷新某个分区

// [tableViewreloadSections:[NSIndexSetindexSetWithIndex:sourceIndexPath.section]withRowAnimation:UITableViewRowAnimationFade];

}

// 限制跨区移动

- (NSIndexPath *)tableView:(UITableView*)tableViewtargetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath*)sourceIndexPathtoProposedIndexPath:(NSIndexPath*)proposedDestinationIndexPath{

if (sourceIndexPath.section !=proposedDestinationIndexPath.section) {

returnsourceIndexPath;

}

returnproposedDestinationIndexPath;

}

// 设置分区个数

- (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView{

return [self.mArr count];

}

// 设置分区行数

- (NSInteger)tableView:(UITableView*)tableViewnumberOfRowsInSection:(NSInteger)section{

return [self.mDic[self.mArr[section]]count];

}

- (UITableViewCell *)tableView:(UITableView*)tableViewcellForRowAtIndexPath:(NSIndexPath *)indexPath{

UITableViewCell *cell =[tableViewdequeueReusableCellWithIdentifier:@"reuse"];

if (cell == nil) {

cell =[[UITableViewCellalloc]initWithStyle:UITableViewCellStyleSubtitlereuseIdentifier:@"reuse"];

}

UIImage *image =[UIImageimageNamed:self.imageDic[self.imageArr[indexPath.section]][indexPath.row]];

cell.imageView.image = image;

cell.textLabel.text =self.mDic[self.mArr[indexPath.section]][indexPath.row];

return cell;

}

// 设置头标题

- (NSString *)tableView:(UITableView*)tableViewtitleForHeaderInSection:(NSInteger)section{

returnself.mArr[section];

}

- (void)getDate{

// 一个字典含有三个数组(对应三个分区)

// 将key值作为分区头标题(字典与数组可变)

NSMutableArray *mArr1 =[NSMutableArrayarrayWithObjects:@"路飞",@"索隆",@"香吉士",nil];

NSMutableArray *mArr2 =[NSMutableArrayarrayWithObjects:@"乌索普", @"乔巴",@"弗兰奇",nil];

NSMutableArray *mArr3 =[NSMutableArrayarrayWithObjects:@"娜美",@"罗宾",nil];

self.mDic = [NSMutableDictionarydictionaryWithObjectsAndKeys:mArr1,@"A",mArr2,@"B",mArr3,@"C",nil];

self.mArr =[NSMutableArrayarrayWithObjects:@"A",@"B",@"C",nil];

NSMutableArray *imageArr1 =[NSMutableArrayarrayWithObjects:@"h4.jpeg",@"h2.jpeg",@"h6.jpeg",nil];

NSMutableArray *imageArr2 =[NSMutableArrayarrayWithObjects:@"h3.jpeg",@"h7.jpeg",@"h8.jpeg",nil];

NSMutableArray *imageArr3 =[NSMutableArrayarrayWithObjects:@"h5.jpeg",@"h1.jpeg",nil];

self.imageDic = [NSMutableDictionarydictionaryWithObjectsAndKeys:imageArr1,@"A",imageArr2,@"B",imageArr3,@"C",nil];

self.imageArr =[NSMutableArrayarrayWithObjects:@"A",@"B",@"C",nil];

}

- (UIView *)tableView:(UITableView*)tableViewviewForHeaderInSection:(NSInteger)section{

UILabel *label =[[UILabelalloc]initWithFrame:CGRectMake(130,0,40,30)];

label.text = self.mArr[section];

label.backgroundColor = [UIColorredColor];

UIView *view = [[UIViewalloc]init];

view.backgroundColor =[UIColoryellowColor];

[viewaddSubview:label];

return view;

}

@end