tableview--编辑全选删除

//
//  ViewController.m
//  tableViewDemo
//
//  Created by qianfeng on 16/11/16.
//  Copyright © 2016年 qianfeng. All rights reserved.
//

#import "ViewController.h"
#import "Cell.h"

static NSString *cellID = @"Cell";
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
{
    BOOL isEditBtnSelected;
    BOOL isSelectBtnSelected;
}
@property(strong,nonatomic) UITableView *tableView;
@property(strong,nonatomic) NSMutableArray *dataSource;
@property(strong,nonatomic) UIButton *editBtn;
@property(strong,nonatomic) UIButton *selectBtn;
@end

@implementation ViewController
-(NSMutableArray *)dataSource{
    if (!_dataSource) {
        _dataSource = [NSMutableArray array];
    }
    return _dataSource;
}
- (void)viewDidLoad {
    [super viewDidLoad];
    isEditBtnSelected = NO;
    isSelectBtnSelected = NO;
    self.tableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];
    [self.view addSubview:self.tableView];
    self.tableView.allowsMultipleSelectionDuringEditing = YES;
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    self.tableView.rowHeight = 60;
    //注册
    [self.tableView registerNib:[UINib nibWithNibName:cellID bundle:nil] forCellReuseIdentifier:cellID];
    //编辑
    _editBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    [_editBtn addTarget:self action:@selector(editBtnClick:) forControlEvents:UIControlEventTouchUpInside];
    _editBtn.frame = CGRectMake(0, 0, 80, 30);
    [_editBtn setTitle:@"编辑" forState:UIControlStateNormal];
    [_editBtn setTitle:@"取消编辑" forState:UIControlStateSelected];
    UIBarButtonItem *rightEditItem =  [[UIBarButtonItem alloc]initWithCustomView:_editBtn];
    //全选
    _selectBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    [_selectBtn addTarget:self action:@selector(selectBtnClick:) forControlEvents:UIControlEventTouchUpInside];
    _selectBtn.frame = CGRectMake(0, 0, 80, 30);
    [_selectBtn setTitle:@"全选" forState:UIControlStateNormal];
    [_selectBtn setTitle:@"取消全选" forState:UIControlStateSelected];
    UIBarButtonItem *rightSelectItem =  [[UIBarButtonItem alloc]initWithCustomView:_selectBtn];
    self.navigationItem.rightBarButtonItems = @[rightEditItem,rightSelectItem];
    //删除
    UIBarButtonItem *deleteBtn =  [[UIBarButtonItem alloc]initWithTitle:@"删除" style:UIBarButtonItemStylePlain target:self action:@selector(deleteBtnClick:)];
    self.navigationItem.leftBarButtonItem = deleteBtn;
    
    
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
    [self.dataSource addObject:@"xxx"];
}




-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.dataSource.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    Cell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
    return cell;
}
//编辑
-(void)editBtnClick:(id)sender
{
    isEditBtnSelected = !isEditBtnSelected;
    self.editBtn.selected = isEditBtnSelected;
    if (isEditBtnSelected) {
        self.tableView.editing = YES;
    }else{
        self.tableView.editing = NO;
    }
}
//全选
-(void)selectBtnClick:(id)sender
{
    isSelectBtnSelected = !isSelectBtnSelected;
    self.selectBtn.selected = isSelectBtnSelected;
    if (isSelectBtnSelected) {
        for (NSInteger i = 0; i < self.dataSource.count; i ++) {
            
            NSIndexPath *indexpath = [NSIndexPath indexPathForRow:i inSection:0];
            
            [self.tableView selectRowAtIndexPath:indexpath animated:YES scrollPosition:0];
        }
    }else{
        for (NSInteger i = 0; i < self.dataSource.count; i ++) {
            
            NSIndexPath *indexpath = [NSIndexPath indexPathForRow:i inSection:0];
            
            [self.tableView deselectRowAtIndexPath:indexpath animated:YES];
        }
    }
}
// 删除
-(void)deleteBtnClick:(id)sender
{
    //获取所有
    NSArray *indexpaths = [self.tableView indexPathsForSelectedRows];
    
    NSMutableIndexSet *indexSet = [NSMutableIndexSet indexSet];
    
    for (NSIndexPath *indexpath in indexpaths) {

        [indexSet addIndex:indexpath.row];
    }
    [self.dataSource removeObjectsAtIndexes:indexSet];
    
    [self.tableView deleteRowsAtIndexPaths:indexpaths withRowAnimation:UITableViewRowAnimationBottom];
}
@end

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