见完整代码
.h文件
#import <UIKit/UIKit.h>
@interface jkwmainViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>
@property (weak, nonatomic) IBOutlet UITableView *TableView;
@end
.m文件
#import "jkwmainViewController.h"
@interface jkwmainViewController (){
NSMutableArray *arr;
UITableViewCellEditingStyle style;
UIBarButtonItem *delete,*add,*edit,*selectdelete,*cancel;
//*moveButton;
}
@end
@implementation jkwmainViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.TableView.dataSource = self;
self.TableView.delegate = self;
//self.navigationItem.title = @"我是数字";
arr = [NSMutableArray arrayWithCapacity:0];
for (int i = 0; i < 50; i ++) {
NSString *str = [NSString stringWithFormat:@"我是数字%d",i];
[arr addObject:str];
}
//[self.TableView setEditing:YES animated:YES];//启动表格的编辑模式
delete= [[UIBarButtonItem alloc]initWithTitle:@"删除" style:UIBarButtonItemStyleBordered target:self action:@selector(delete)];
add = [[UIBarButtonItem alloc]initWithTitle:@"添加" style:UIBarButtonItemStyleBordered target:self action:@selector(add)];
selectdelete= [[UIBarButtonItem alloc]initWithTitle:@"选择删除" style:UIBarButtonItemStyleBordered target:self action:@selector(selectdelete)];
NSArray *leftBarButtons = [NSArray arrayWithObjects:delete,add,selectdelete, nil];
self.navigationItem.leftBarButtonItems = leftBarButtons;//设置导航栏左边按钮为添加和删除按钮
// moveButton = [[UIBarButtonItem alloc]initWithTitle:@"移动" style:UIBarButtonItemStyleBordered target:self action:@selector(Move)];
cancel= [[UIBarButtonItem alloc]initWithTitle:@"取消" style:UIBarButtonItemStyleBordered target:self action:@selector(cancel)];
edit= [[UIBarButtonItem alloc]initWithTitle:@"编辑" style:UIBarButtonItemStyleBordered target:self action:@selector(edit)];
NSArray *rightBarButtons = [NSArray arrayWithObjects:edit,cancel, nil];
self.navigationItem.rightBarButtonItems = rightBarButtons;
self.TableView.allowsMultipleSelectionDuringEditing = NO;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [arr count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *dentify = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:[NSString stringWithFormat:@"%@ %d %d",dentify,indexPath.section,indexPath.row]];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:nil];
cell.textLabel.text = [arr objectAtIndex:[indexPath row]];
cell.detailTextLabel.text = @"看看我是几";
cell.detailTextLabel.font = [UIFont systemFontOfSize:14];
return cell;
}
//标记单行 标记多少行
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *onecell = [tableView cellForRowAtIndexPath:indexPath];
if (onecell.accessoryType == UITableViewCellAccessoryNone ) {
onecell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else onecell.accessoryType = UITableViewCellAccessoryNone;
self.TableView.allowsMultipleSelection = YES;
NSArray *selectRows = [self.TableView indexPathsForSelectedRows];//得到选中行
selectdelete.title = [NSString stringWithFormat:@"删除(%d)",selectRows.count];
//[self updateDeleteButtonTitle];
}
-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{
self.TableView.allowsMultipleSelection = YES;
NSArray *selectRows = [self.TableView indexPathsForSelectedRows];//得到选中行
selectdelete.title = [NSString stringWithFormat:@"删除(%d)",selectRows.count];
UITableViewCell *onecell = [tableView cellForRowAtIndexPath:indexPath];
if (onecell.accessoryType == UITableViewCellAccessoryNone ) {
onecell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else onecell.accessoryType = UITableViewCellAccessoryNone;
}
// 是否可编辑
-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{
return YES;
}
//编辑模式
-(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
return style;
}//打开编辑模式后,默认情况下每行左边会出现红的删除按钮,这个方法就是关闭这些按钮的
//- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView
// editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
// return UITableViewCellEditingStyleNone;
//}
//这个方法用来告诉表格 这一行是否可以移动
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;//可以移动
}
//这个方法就是执行移动操作的
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)
sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath {
NSUInteger fromRow = [sourceIndexPath row];//要移动的那个cell integer
NSUInteger toRow = [destinationIndexPath row];//要移动位置的那个clell integer
id object = [arr objectAtIndex:fromRow];
[arr removeObjectAtIndex:fromRow];
[arr insertObject:object atIndex:toRow];
}
-(NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath
{
return @"删除";
}
//这个方法根据参数editingStyle是UITableViewCellEditingStyleDelete
//还是UITableViewCellEditingStyleDelete执行删除或者插入
- (void)tableView:(UITableView *)tableView commitEditingStyle:
(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
NSUInteger row = [indexPath row];
[arr removeObjectAtIndex:row]; // 从数据源中删除
[tableView deleteRowsAtIndexPaths:@[indexPath]
withRowAnimation:UITableViewRowAnimationAutomatic];// 从列表中删除 [NSArray arrayWithObject:indexPath]==@[indexPath]
}
else if (editingStyle == UITableViewCellEditingStyleInsert){
[arr insertObject:@"new one" atIndex:indexPath.row ];
[self.TableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)delete {
style = UITableViewCellEditingStyleDelete;
[self.TableView setEditing:!self.TableView.editing animated:YES];
if (self.TableView.editing)
{
[self.navigationItem.leftBarButtonItem setTitle:@"完成"];
}
else
{
[self.navigationItem.leftBarButtonItem setTitle:@"删除"];
}
}
-(void)add{
style = UITableViewCellEditingStyleInsert;
[self.TableView setEditing:!self.TableView.editing animated:YES];
if (self.TableView.editing) {
[[[self.navigationItem leftBarButtonItems]objectAtIndex:1] setTitle:@"完成"];
}
else{
[[[self.navigationItem leftBarButtonItems]objectAtIndex:1] setTitle:@"添加"];
}
}
-(void)cancel{
[self.TableView setEditing:NO animated:YES];
[self.TableView reloadData];
selectdelete.title = @"选择删除";
}
-(void)updateDeleteButtonTitle{
NSArray *selectRows = [self.TableView indexPathsForSelectedRows];//得到选中行
BOOL allItemsAreSelected = selectRows.count == arr.count;//是否全选
BOOL noItemsAreSelected = selectRows.count == 0;//选中行数是否为零
if (allItemsAreSelected||noItemsAreSelected)
{
selectdelete.title = @"全部删除";// 如果是全选或者未选,则删除键为删除全部
}
else {
selectdelete.title = [NSString stringWithFormat:@"删除(%d)",selectRows.count];// 否则 删除键为删除(选中行数量)
}
}
-(void)edit{
self.TableView.allowsMultipleSelectionDuringEditing =YES;// 进入可多选删除状态
[self.TableView setEditing:YES animated:YES];
// [self updateDeleteButtonTitle];
}
-(void)selectdelete{
if (!self.TableView.editing) {
return;
}
NSArray *selectRows = [self.TableView indexPathsForSelectedRows];//选中的行
// BOOL deleteSpecificrows = selectRows.count > 0;// 是否删除特定的行
//删除特定的行
if (selectRows.count ==0||selectRows.count ==arr.count) {
//删除全部
[self updateDeleteButtonTitle];
[arr removeAllObjects];
[self.TableView reloadSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationAutomatic];
}
if (selectRows.count > 0||selectRows.count < arr.count) {
// 将所选的行的索引值放在一个集合中进行批量删除
NSMutableIndexSet *indicesOfItemsToDelete = [NSMutableIndexSet new];
for (NSIndexPath *selectIndex in selectRows) {
[indicesOfItemsToDelete addIndex:selectIndex.row];
}
//从数据源中删除所选对应的值
[arr removeObjectsAtIndexes:indicesOfItemsToDelete];
//删除所选的行
[self.TableView deleteRowsAtIndexPaths:selectRows withRowAnimation:UITableViewRowAnimationAutomatic];
}
// 删除完成,退出编辑状态,并退出多选状态
[self.TableView setEditing:NO animated:YES];
self.TableView.allowsMultipleSelectionDuringEditing = NO;
selectdelete.title = @"选择删除";
}
@end