iPhone开发之实现UITableView多选删除功能详解

来源：互联网发布：阿凡达妹妹唱功知乎编辑：程序博客网时间：2024/04/30 09:35

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.
//
#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！

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