iOS开发,UITableViewCell基本操作（如:左滑删除
2016-08-31 本文已影响782人
KennyHito
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实现功能:
iOS开发,UITableViewCell基本操作,如:左滑删除按钮及编辑模式,全选,全不选等功能.
代码区域
Display.gif
#import "ViewController.h"
#define WIDTH [UIScreen mainScreen].bounds.size.width
#define HEIGHT [UIScreen mainScreen].bounds.size.height
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
@property (nonatomic,strong) UITableView * tableView;//列表
@property (nonatomic,strong) NSMutableArray * dataArr;//数据源
@property (nonatomic,strong) NSMutableArray * deleteArr;//存储删除的数据
@property (nonatomic,strong) UIBarButtonItem * bar1;//编辑,删除按钮
@property (nonatomic,strong) UIBarButtonItem * bar2;//全选,全不选按钮
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.automaticallyAdjustsScrollViewInsets = NO;
[self createUI];
[self createDataArr];
[self createTableView];
}
#pragma mark --> createUI
- (void)createUI{
_bar1 = [[UIBarButtonItem alloc]initWithTitle:@"编辑" style:UIBarButtonItemStylePlain target:self action:@selector(btnClick:)];
_bar2 = [[UIBarButtonItem alloc]initWithTitle:@"全选" style:UIBarButtonItemStylePlain target:self action:@selector(AllBtnClick:)];
self.navigationItem.rightBarButtonItems = @[_bar1];
}
- (void)btnClick:(UIBarButtonItem *)item{
//点击编辑按钮
static BOOL flag = NO;
flag = !flag;
if (flag) {
// 编辑模式的时候可以多选
self.tableView.allowsMultipleSelectionDuringEditing = YES;
self.tableView.editing = YES;
_bar1.title = @"删除";
self.navigationItem.rightBarButtonItems = @[_bar1,_bar2];
}else{
self.tableView.editing = NO;
_bar1.title = @"编辑";
self.navigationItem.rightBarButtonItems = @[_bar1];
[_dataArr removeObjectsInArray:_deleteArr];
[_deleteArr removeAllObjects];
[_tableView reloadData];
}
}
#pragma mark --> 全选按钮
- (void)AllBtnClick :(UIBarButtonItem *)item{
static BOOL flag = NO;
flag = !flag;
if (flag) {
_bar2.title = @"全不选";
// 获得选中的所有行
for (int i = 0; i < _dataArr.count; i ++) {
NSIndexPath *indexPath = [NSIndexPath indexPathForItem:i inSection:0];
[self.tableView selectRowAtIndexPath:indexPath animated:YES scrollPosition:UITableViewScrollPositionNone];
}
[self.deleteArr addObjectsFromArray:_dataArr];
// NSLog(@"%@",_deleteArr);
}else{
_bar2.title = @"全选";
[self.tableView selectRowAtIndexPath:0 animated:YES scrollPosition:UITableViewScrollPositionNone];
[_deleteArr removeAllObjects];
}
self.navigationItem.rightBarButtonItems = @[_bar1,_bar2];
}
#pragma mark --> 选中cell
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[self.deleteArr addObject:_dataArr[indexPath.row]];
NSLog(@"%@",_deleteArr);
}
#pragma mark --> 取消选中cell
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{
NSLog(@"--------cell取消选中-------");
[self.deleteArr removeObject:_dataArr[indexPath.row]];
}
#pragma mark --> createTableView
- (void)createTableView{
_tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 64, WIDTH, HEIGHT - 64) style:UITableViewStylePlain];
_tableView.delegate = self;
_tableView.dataSource = self;
[self.view addSubview:_tableView];
[_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"CellID"];
//将文本放到最后一行
// NSIndexPath * index = [NSIndexPath indexPathForRow:_dataArr.count-1 inSection:0];
// [_tableView scrollToRowAtIndexPath:index atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}
#pragma mark --> createDataArr
- (void)createDataArr{
_dataArr = [[NSMutableArray alloc]init];
for (int i = 0; i<40; i++) {
[_dataArr addObject:[NSString stringWithFormat:@"这是第%d条数据",i]];
}
}
#pragma mark --> UITabelViewDelegate
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return _dataArr.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"CellID" forIndexPath:indexPath];
cell.textLabel.text = _dataArr[indexPath.row];
return cell;
}
#pragma mark --> 修改cell上的文字
- (nullable NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath{
return @"删除";
}
#pragma mark -- 左滑cell时出现什么按钮 -> Delegate方法
- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewRowAction *action0 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal title:@"置顶" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
NSLog(@"点击了置顶按钮");
// 收回左滑出现的按钮(退出编辑模式)
tableView.editing = NO;
}];
UITableViewRowAction *action1 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"删除" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
NSLog(@"点击了删除按钮");
// 删除数据源
[_dataArr removeObjectAtIndex:indexPath.row];
// 刷新数据
[tableView reloadData];
//或者cell删除
//[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}];
return @[action1, action0];
}
#pragma mark --> 懒加载
- (NSMutableArray *)deleteArr{
if (_deleteArr == nil) {
_deleteArr = [[NSMutableArray alloc]init];
}
return _deleteArr;
}
@end
Demo下载地址 : https://github.com/NSLog-YuHaitao/UITableViewCell-Edit
针对全选/取消还是存在问题,本人已将这块代码单独进行修改,请看:http://www.jianshu.com/p/89a4e6ac72eb
声明
- 所有文章出自 Kenny Hito 的博客 !
- 未经本人允许不得转载, 转载请标明来源与作者, 谢谢合作!
