iphone开发之兑现UITableView多选删除功能详解_Iphone

iphone开发之实现UITableView多选删除功能详解

很多情况下应用需要批量处理功能，但UITableView并没有类似的功能，但我们可以自己实现。

首先在UITableView的 edittingStyleForRowAtIndexPath函数中，添加如下代码：

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

returnUITableViewCellEditingStyleDelete |UITableViewCellEditingStyleInsert;

}

这样我们就可以得到下面的效果：

注意：初始时设置TableView setEditing=YES;

具体实现：

////  CloViewController.m//  MuTableViewTest////  Created by Cloay on 12-6-26.//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.//#import "CloViewController.h"@interface CloViewController ()@end@implementation CloViewController@synthesize dataArray;@synthesize selectedDic;- (IBAction)rightBtnPressed:(id)sender{    //显示多选圆圈    [cloMableView setEditing:YES animated:YES];    rightBtn.title = @"确定";    [rightBtn setAction:@selector(rightBtnPressedWithSure:)];}- (IBAction)rightBtnPressedWithSure:(id)sender{    //do something with selected cells like delete//    NSLog(@"selectedDic------->:%@", self.selectedDic);    int count = [self.selectedDic count];    if (count > 0 ) {        for (int i = 0; i < count; i++) {            NSInteger row = [[self.selectedDic objectAtIndex:i] row];            [self.dataArray removeObjectAtIndex:row];        }        //    NSLog(@"self.dataArray:------>:%@", self.dataArray);        [cloMableView deleteRowsAtIndexPaths:self.selectedDic withRowAnimation:UITableViewRowAnimationFade];        [self.selectedDic removeAllObjects];        //    NSLog(@"self.selectedDic--------->:%@", self.selectedDic);//        [cloMableView reloadData];        rightBtn.title = @"删除";        [rightBtn setAction:@selector(rightBtnPressed:)];        [cloMableView setEditing:NO animated:YES];    }else {        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"未选中任何数据!" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"重新选择", nil];        [alert show];        [alert release];    }}- (void)viewDidLoad{    [super viewDidLoad];	// Do any additional setup after loading the view, typically from a nib.    self.dataArray = [[NSMutableArray alloc] initWithObjects:@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", nil];    self.selectedDic = [[NSMutableArray alloc] init];        rightBtn = [[UIBarButtonItem alloc] initWithTitle:@"删除" style:UIBarButtonItemStyleBordered target:self action:@selector(rightBtnPressed:)];    self.navigationItem.rightBarButtonItem = rightBtn;}- (void)viewDidUnload{    [super viewDidUnload];    // Release any retained subviews of the main view.}- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);}#pragma -mark#pragma tableview data source method- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return  [self.dataArray count];}- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    return 1;}#pragma tableView delegate methods- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{    return UITableViewCellEditingStyleDelete | UITableViewCellEditingStyleInsert;}- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{    return YES;}//添加一项- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    if ([rightBtn.title isEqualToString:@"确定"]) {        [self.selectedDic addObject:indexPath];//        NSLog(@"Select---->:%@",self.selectedDic);    }}//取消一项- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{    if ([rightBtn.title isEqualToString:@"确定"]) {        [self.selectedDic removeObject:indexPath];//        NSLog(@"Deselect---->:%@",self.selectedDic);    }}//选择后- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{    //}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *tableViewIdentifier = @"TableViewIdentifier";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:tableViewIdentifier];    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:tableViewIdentifier];    NSInteger row = [indexPath row];    cell.textLabel.text = [self.dataArray objectAtIndex:row];    return cell;}#pragma mark-#pragma AlertView delegate method- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{    if (buttonIndex == 0) {        rightBtn.title = @"删除";        [rightBtn setAction:@selector(rightBtnPressed:)];        [cloMableView setEditing:NO animated:YES];    }}@end

效果图：

删除后：

代码比较简单，就不过多解释了！

有问题请留言，大家一起交流学习！

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