简介
ios表格有UICollectionView、UITableView两种格式，下面简单的整理了一下这两种表格的移动和删除方法，有说得不对的请指正。
一、UICollectionView表格
不多说，直接上代码
UIViewController里实现
@property (nonatomic, retain) UIImageView *delectImg;//回收站
/**之前选中cell的NSIndexPath*/
@property (nonatomic, strong) NSIndexPath *oldIndexPath;
/**单元格的截图*/
@property (nonatomic, strong) UIView *snapshotView;
/**之前选中cell的NSIndexPath*/
@property (nonatomic, strong) NSIndexPath *moveIndexPath;
/*数据源*/
@property(nonatomic,retain)NSMutableArray *title_Arr;
//创建UICollectionView
self.title_Arr = [NSMutableArray arrayWithObjects:@"少",@"壮",@"不",@"努",@"力",@"老",@"大",@"徒",@"伤",@"悲", nil];
self.title=@"UICollectionView";
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 64, SCREEN_WIDTH, SCREEN_HEIGHT-64-50) collectionViewLayout:flowLayout];
self.collectionView.backgroundColor=[UIColor blueColor];
self.collectionView.dataSource = self;
self.collectionView.delegate = self;
self.collectionView.backgroundColor = [UIColor whiteColor];
[self.collectionView registerClass:[MoveCollectionViewCell class] forCellWithReuseIdentifier:@"uicollectionviewcell"];
[self.view addSubview:self.collectionView = self.collectionView];
//回收站
self.delectImg=[[UIImageView alloc]initWithFrame:CGRectMake(SCREEN_WIDTH-110, SCREEN_HEIGHT-210, 80, 80)];
UIImage *i = [UIImage imageNamed:@"btn_delete-application_sel.png"];
self.delectImg.image=i;
// 添加长按手势
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handlelongGesture:)];
[self.collectionView addGestureRecognizer:longPress];
pragma mark - UICollectionViewDataSource实现代理
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return self.title_Arr.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
MoveCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"uicollectionviewcell" forIndexPath:indexPath];
cell.nameLab.text = self.title_Arr[indexPath.row];;
return cell;
}
//定义每个section的个数
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
return 1;
}
//定义每个UICollectionView 的大小（返回CGSize：宽度和高度）
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
return CGSizeMake(63, 103);
}
//定义每个UICollectionView 的间距（返回UIEdgeInsets：上、左、下、右）
-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section{
return UIEdgeInsetsMake(20, (SCREEN_WIDTH-252)/5, 10, (SCREEN_WIDTH-252)/5);
}
//两个cell之间的间距（同一行的cell的间距）
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section{
return 10;
}
//这个是两行cell之间的间距（上下行cell的间距）
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section{
return 30;
}
pragma mark - 长按手势
- (void)handlelongGesture:(UILongPressGestureRecognizer *)longPress
{
if ([[[UIDevice currentDevice] systemVersion] floatValue] < 9.0) {
[self action:longPress];
} else {
[self iOS9_Action:longPress];
}
}
//iOS9之后的实现
#pragma mark - iOS9 之后的方法
- (BOOL)collectionView:(UICollectionView *)collectionView canMoveItemAtIndexPath:(NSIndexPath *)indexPath
{
// 返回YES允许row移动
return YES;
}
- (void)collectionView:(UICollectionView *)collectionView moveItemAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
//取出移动row数据
id alldata = self.title_Arr[sourceIndexPath.row];
//从数据源中移除该数据
[self.title_Arr removeObject:alldata];
//将数据插入到数据源中的目标位置
[self.title_Arr insertObject:alldata atIndex:destinationIndexPath.row];
}
- (void)iOS9_Action:(UILongPressGestureRecognizer *)longPress
{
switch (longPress.state) {
case UIGestureRecognizerStateBegan:{ //手势开始
//判断手势落点位置是否在row上
[self.view addSubview:self.delectImg];
NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:[longPress locationInView:self.collectionView]];
[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"indexPath"];
[[NSUserDefaults standardUserDefaults] setInteger:indexPath.row forKey:@"indexPath"];
[[NSUserDefaults standardUserDefaults] synchronize];
if (indexPath == nil) {
break;
}
UICollectionViewCell *cell = [self.collectionView cellForItemAtIndexPath:indexPath];
[self.view bringSubviewToFront:cell];
//iOS9方法 移动cell
[self.collectionView beginInteractiveMovementForItemAtIndexPath:indexPath];
}
break;
case UIGestureRecognizerStateChanged:
{ // 手势改变
// iOS9方法 移动过程中随时更新cell位置
[self.collectionView updateInteractiveMovementTargetPosition:[longPress locationInView:self.collectionView]];
CGPoint endPoint = [longPress locationInView:self.view];
CGFloat longS = sqrt(pow((endPoint.x-SCREEN_WIDTH+60), 2) + pow((endPoint.y-SCREEN_HEIGHT+180), 2));
if (longS <= 160) {
self.delectImg.frame = CGRectMake(SCREEN_WIDTH-120, SCREEN_HEIGHT-200, 100, 100);
}
}
break;
case UIGestureRecognizerStateEnded:
{ // 手势结束
// iOS9方法 移动结束后关闭cell移动
NSInteger indexPath= [[NSUserDefaults standardUserDefaults]integerForKey:@"indexPath"];
NSIndexPath *indexPathStr = [self.collectionView indexPathForItemAtPoint:[longPress locationInView:self.collectionView]];
if (indexPathStr == nil) {
CGPoint endPoint = [longPress locationInView:self.view];
CGFloat longS = sqrt(pow((endPoint.x-SCREEN_WIDTH+60), 2) + pow((endPoint.y-SCREEN_HEIGHT+180), 2));
if (longS <= 160) {
[self CancelAttention:indexPath];
}
}
[self.collectionView endInteractiveMovement];
[self.delectImg removeFromSuperview];
self.delectImg.frame=CGRectMake(SCREEN_WIDTH-110, SCREEN_HEIGHT-210, 80, 80);
}
break;
default: //手势其他状态
[self.collectionView cancelInteractiveMovement];
break;
}
}
//.iOS9之前的实现
#pragma mark - iOS9 之前的方法
- (void)action:(UILongPressGestureRecognizer *)longPress
{
switch (longPress.state) {
case UIGestureRecognizerStateBegan:
{ // 手势开始
//判断手势落点位置是否在row上
NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:[longPress locationInView:self.collectionView]];
self.oldIndexPath = indexPath;
if (indexPath == nil) {
break;
}
UICollectionViewCell *cell = [self.collectionView cellForItemAtIndexPath:indexPath];
// 使用系统的截图功能,得到cell的截图视图
UIView *snapshotView = [cell snapshotViewAfterScreenUpdates:NO];
snapshotView.frame = cell.frame;
[self.view addSubview:self.snapshotView = snapshotView];
// 截图后隐藏当前cell
cell.hidden = YES;
CGPoint currentPoint = [longPress locationInView:self.collectionView];
[UIView animateWithDuration:0.25 animations:^{
snapshotView.transform = CGAffineTransformMakeScale(1.05, 1.05);
snapshotView.center = currentPoint;
}];
}
break;
case UIGestureRecognizerStateChanged:
{ // 手势改变
//当前手指位置 截图视图位置随着手指移动而移动
CGPoint currentPoint = [longPress locationInView:self.collectionView];
self.snapshotView.center = currentPoint;
// 计算截图视图和哪个可见cell相交
for (UICollectionViewCell *cell in self.collectionView.visibleCells) {
// 当前隐藏的cell就不需要交换了,直接continue
if ([self.collectionView indexPathForCell:cell] == self.oldIndexPath) {
continue;
}
// 计算中心距
CGFloat space = sqrtf(pow(self.snapshotView.center.x - cell.center.x, 2) + powf(self.snapshotView.center.y - cell.center.y, 2));
// 如果相交一半就移动
if (space <= self.snapshotView.bounds.size.width / 2) {
self.moveIndexPath = [self.collectionView indexPathForCell:cell];
//移动 会调用willMoveToIndexPath方法更新数据源
[self.collectionView moveItemAtIndexPath:self.oldIndexPath toIndexPath:self.moveIndexPath];
//设置移动后的起始indexPath
self.oldIndexPath = self.moveIndexPath;
break;
}
}
}
break;
default:
{ // 手势结束和其他状态
UICollectionViewCell *cell = [self.collectionView cellForItemAtIndexPath:self.oldIndexPath];
// 结束动画过程中停止交互,防止出问题
self.collectionView.userInteractionEnabled = NO;
[self.delectImg removeFromSuperview];
// 给截图视图一个动画移动到隐藏cell的新位置
[UIView animateWithDuration:0.25 animations:^{
self.snapshotView.center = cell.center;
self.snapshotView.transform = CGAffineTransformMakeScale(1.0, 1.0);
} completion:^(BOOL finished) {
// 移除截图视图,显示隐藏的cell并开始交互
[self.snapshotView removeFromSuperview];
cell.hidden = NO;
self.collectionView.userInteractionEnabled = YES;
}];
}
break;
}
}
//删除应用
-(void)CancelAttention:(NSInteger)index{
[self.title_Arr removeObjectAtIndex:index];
[self.collectionView reloadData];
}
MoveCollectionViewCell里实现
-(id)initWithFrame:(CGRect)frame{
self=[super initWithFrame:frame];
if (self) {
[self addSubview:self.nameLab];
}
return self;
}
-(UILabel *)nameLab{
if (!_nameLab) {
self.nameLab=[[UILabel alloc]initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.frame), CGRectGetHeight(self.frame))];
self.nameLab.textColor=[UIColor blackColor];
self.nameLab.lineBreakMode=NSLineBreakByWordWrapping;
self.nameLab.backgroundColor= [UIColor redColor];
self.nameLab.numberOfLines = 0;
self.nameLab.font=[UIFont systemFontOfSize:16];
self.nameLab.textAlignment=NSTextAlignmentCenter;
}
return _nameLab;
}
二、UITableView表格
UIViewController里实现
@property (nonatomic, strong) UITableView *myTableView;
//创建UITableView
self.title=@"UITableView";
self.myTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 64, SCREEN_WIDTH, SCREEN_HEIGHT-64-50) style:UITableViewStylePlain];
self.myTableView.delegate = self;
self.myTableView.dataSource = self;
self.myTableView.scrollEnabled = YES;
self.myTableView.backgroundColor = [UIColor groupTableViewBackgroundColor];
self.myTableView.showsVerticalScrollIndicator = NO;
[self.myTableView setEditing:YES animated:YES];
[self.view addSubview:self.myTableView];
pragma mark--- UITableViewDataSource,UITableViewDelegate代理实现
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return 60;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.title_Arr.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *identifier = @"UITableViewCell";
MoveTableViewCell *tableCell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (tableCell == nil) {
tableCell = [[MoveTableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:identifier];
}
// tableCell.accessoryType=UITableViewCellAccessoryDisclosureIndicator;
[tableCell name:self.title_Arr[indexPath.row]];
return tableCell;
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath{
return YES;
}
//确认编辑类型
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
return UITableViewCellEditingStyleDelete;
}
//移动方法
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath{
// 更换数据的顺序
[self.title_Arr exchangeObjectAtIndex:sourceIndexPath.row withObjectAtIndex:destinationIndexPath.row];
}
//删除方法
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
// 1.删除数据
[self.title_Arr removeObjectAtIndex:indexPath.row];
// 2.更新UITableView UI界面
// [tableView reloadData];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath {
return @"删除";
}
MoveTableViewCell里实现
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
//设置点击样式
self.selectionStyle = UITableViewCellSelectionStyleNone;
//添加子控件
[self addSubViews];
}
return self;
}
#pragma mark---添加子控件
- (void)addSubViews{
self.name_lab =[[UILabel alloc] initWithFrame:CGRectMake(50, 0, SCREEN_WIDTH-100, 60)];
self.name_lab.adjustsFontSizeToFitWidth = YES;
self.name_lab.font = [UIFont systemFontOfSize:16];
self.name_lab.numberOfLines = 0;
self.name_lab.textColor= [UIColor darkTextColor];
self.name_lab.textAlignment = NSTextAlignmentLeft;
[self addSubview:self.name_lab];
}
- (void)name:(NSString *)nameStr{
self.name_lab.text = nameStr;
}
