1、左滑删除cell：
#pragma mark 左滑删除cell
- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {
if (self.oftenModels.count > 0) {
// 类型： 1 :添加的球场 2:上次选择 3 :离我最近
NSInteger type = self.oftenModels[indexPath.row].type;
if (type == 1) {
// [self changeConfigSwipeButtons];
//删除
UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"删除" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
/** 点击 删除 按钮的操作 */
if (self.deleteSelectCellBlock) {
self.deleteSelectCellBlock(YES, indexPath.row);
}
}];
deleteRowAction.title = @"删除";
// deleteRowAction.backgroundColor = RGBA(223, 109, 53, 1);
// deleteRowAction.backgroundColor = [UIColor clearColor];
UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction]];
config.performsFirstActionWithFullSwipe = NO; // 禁止侧滑无线拉伸
return config;
} else {
return nil;
}
} else {
return nil;
}
}
- (void)tableView:(UITableView *)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath {
// NSLog(@"😭😭 == willBeginEditing");
[self changeConfigSwipeButtons];
}
- (void)tableView:(UITableView *)tableView didEndEditingRowAtIndexPath:(NSIndexPath *)indexPath {
// NSLog(@"😆😆😆😆 == didEndEditing");
}
//- (void)layoutSubviews {
// [super layoutSubviews];
//// [self changeConfigSwipeButtons];
//}
#pragma mark -- -- 自定义修改左滑 删除按钮 样式
- (void)changeConfigSwipeButtons {
// iOS 11层级 : UITableView -> UISwipeActionPullView(当左滑出现“删除”按钮时，按钮的俯视图是UISwipeActionPullView)
for (UIView *subview in self.tableView.subviews) {
// ios 11以下
if ([subview isKindOfClass:NSClassFromString(@"UISwipeActionPullView")] && [subview.subviews count] >= 1)
{
UIButton*readButton = subview.subviews[0];
[readButton setImage:[UIImage imageNamed:@"plan_delete"] forState:UIControlStateNormal];
break;
}
// ios 13
// _UITableViewCellSwipeContainerView 是tableview 的子视图，UISwipeActionPullView是_UITableViewCellSwipeContainerView的子视图
else if ([subview isKindOfClass:NSClassFromString(@"_UITableViewCellSwipeContainerView")] && [subview.subviews count] >= 1) {
for (UIView *subview0 in subview.subviews){
if ([subview0 isKindOfClass:NSClassFromString(@"UISwipeActionPullView")] && [subview0.subviews count] >= 1){
UIButton *deleteButton = subview0.subviews[0]; // 第一层视图
deleteButton.layer.masksToBounds = YES;
deleteButton.layer.cornerRadius = 12;
deleteButton.layer.backgroundColor = RGBA(223, 109, 53, 1).CGColor;
[deleteButton setBackgroundImage:[UIImage imageWithColor:UIColorFromHex(@"de6d3c") size:CGSizeMake(80, 135)] forState:UIControlStateNormal];
// deleteButton.backgroundColor = RGBA(223, 109, 53, 1);
// [deleteButton setTitle:@"删除" forState:UIControlStateNormal];
// [deleteButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
// deleteButton.titleLabel.font = [UIFont systemFontOfSize:[UIScreen mainScreen].bounds.size.width/375*16 weight:UIFontWeightMedium];
// deleteButton.layer.masksToBounds = YES;
// deleteButton.layer.cornerRadius = [UIScreen mainScreen].bounds.size.width/375*12;
// [deleteButton makeConstraints:^(MASConstraintMaker *make) {
// make.center.equalTo(subview0.subviews[0]);
// make.width.mas_equalTo(200);
// make.height.mas_equalTo(30);
// }];
//修改按钮-颜色
// UIButton *swipeActionStandardBtn = subview0.subviews[0];
// swipeActionStandardBtn.backgroundColor = RGBA(223, 109, 53, 1);
// swipeActionStandardBtn.layer.masksToBounds = YES;
// swipeActionStandardBtn.layer.cornerRadius = [UIScreen mainScreen].bounds.size.width/375*12;
// swipeActionStandardBtn.layer.maskedCorners = kCALayerMinXMinYCorner | kCALayerMinXMaxYCorner; // 设置某一个角（自动布局可用）
// swipeActionStandardBtn.clipsToBounds = YES; // 设置这个属性，子视图超出边界裁剪掉
// if ([swipeActionStandardBtn isKindOfClass:NSClassFromString(@"UISwipeActionStandardButton")]) {
// CGFloat swipeActionStandardBtnOX = swipeActionStandardBtn.frame.origin.x;
// CGFloat swipeActionStandardBtnW = swipeActionStandardBtn.frame.size.width;
// swipeActionStandardBtn.frame = CGRectMake(swipeActionStandardBtnOX, 0, swipeActionStandardBtnW, 30);
// }
break;
}
}
}
}
}
+ (UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size {
if (!color || size.width <= 0 || size.height <= 0) return nil;
CGRect rect = CGRectMake(0.0f, 0.0f, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, color.CGColor);
CGContextFillRect(context, rect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
2、UITableView上下移动位置（系统）：
在UITableView中，我们可以使用- (BOOL) tableView: (UITableView *) tableView canMoveRowAtIndexPath: (NSIndexPath *) indexPath方法来禁止移动某一行。下面的例子是禁止移动最后一行。但是，虽然不能移动最后一行，却可以将其他行移动至最后一行下方。
所以需要方法：- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath;来设置。
[self.tableView setEditing:YES animated:YES]; // 进入可编辑状态
//默认编辑模式下，每个cell左边有个红色的删除按钮，设置为None即可去掉
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewCellEditingStyleNone;
}
//是否允许indexPath的cell移动
//是否允许indexPath的cell移动
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == 0) { // 禁止第一行移动
return NO;
} else {
return YES;
}
}
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
NSLog(@"移动的位置索引 = %ld,\n 将要移动到达的位置索引 == %ld", sourceIndexPath.row, destinationIndexPath.row);
//更新数据源
}
#pragma mark -- 禁止某一行移动
// 禁止某一行移动，并且禁止其他cell移动到该cell的索引位置（这里禁止移动第一行）
- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath {
NSIndexPath *indexPath = nil;
// 要求：第一个cell位置置顶，不可移动，所以当移动其他cell到该位置时，进行下列操作：
if (proposedDestinationIndexPath.row == 0) {
indexPath = [NSIndexPath indexPathForRow: 1 inSection: 0];
} else {
indexPath = [NSIndexPath indexPathForRow:proposedDestinationIndexPath.row inSection: 0];
}
return indexPath;
}
// 拖拽 预览
- (nullable UIDragPreviewParameters *)tableView:(UITableView *)tableView dragPreviewParametersForRowAtIndexPath:(NSIndexPath *)indexPath {
// return nil;
// 可以在该方法内使用 贝塞尔曲线 对单元格的一个具体区域进行裁剪
UIDragPreviewParameters *parameters = [[UIDragPreviewParameters alloc] init];
CGFloat previewLength = self.tableView.frame.size.width;
CGRect rect = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width/375*(335), [UIScreen mainScreen].bounds.size.width/375*(75 + 12));
parameters.visiblePath = [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:[UIScreen mainScreen].bounds.size.width/375*16];
parameters.backgroundColor = RGBA(248, 249, 250, 1);
return parameters;
}
- (void)tableView:(UITableView *)tableView dragSessionWillBegin:(id<UIDragSession>)session {
// 将要 拖拽
NSLog(@"😁😆");
}
- (void)tableView:(UITableView *)tableView dragSessionDidEnd:(id<UIDragSession>)session {
// 拖拽 结束
NSLog(@"😁😆");
}
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