iOS自定義UITableView實現(xiàn)不同系統(tǒng)下的左滑刪除功能詳解

//使用系統(tǒng)默認的刪除按鈕
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
 if (editingStyle == UITableViewCellEditingStyleDelete){

 }
}
//自定義系統(tǒng)默認的刪除按鈕文字
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath {
 return @"自定義按鈕”;
}

//自定義多個左滑菜單選項
- (NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
 UITableViewRowAction *deleteAction;
 deleteAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"刪除" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
 [tableView setEditing:NO animated:YES];//退出編輯模式，隱藏左滑菜單
 }];
 if (indexPath.row == 1) {//在不同的cell上添加不同的按鈕
 UITableViewRowAction *shareAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"分享" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
  [tableView setEditing:NO animated:YES];//退出編輯模式，隱藏左滑菜單
 }];
 shareAction.backgroundColor = [UIColor blueColor];
 return @[deleteAction,shareAction];
 }
 return @[deleteAction];
}

@interface UITableViewRowAction : NSObject <NSCopying>

+ (instancetype)rowActionWithStyle:(UITableViewRowActionStyle)style title:(nullable NSString *)title handler:(void (^)(UITableViewRowAction *action, NSIndexPath *indexPath))handler;

@property (nonatomic, readonly) UITableViewRowActionStyle style;
@property (nonatomic, copy, nullable) NSString *title;
@property (nonatomic, copy, nullable) UIColor *backgroundColor; // default background color is dependent on style
@property (nonatomic, copy, nullable) UIVisualEffect* backgroundEffect;

@end

typedef NS_ENUM(NSInteger, UITableViewRowActionStyle) {
 UITableViewRowActionStyleDefault = 0,//紅底白字
 UITableViewRowActionStyleDestructive = UITableViewRowActionStyleDefault,
 UITableViewRowActionStyleNormal//灰底白字
} NS_ENUM_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED;

- (void)layoutSubviews {
 /**自定義設置iOS8-10系統(tǒng)下的左滑刪除按鈕大小*/
 for (UIView * subView in self.subviews) {
 if ([subView isKindOfClass:NSClassFromString(@"UITableViewCellDeleteConfirmationView")]) {
  subView.backgroundColor = [UIColor clearColor];//去掉默認紅色背景
  //設置按鈕frame
  CGRect cRect = subView.frame;
  cRect.origin.y = self.contentView.frame.origin.y + 10;
  cRect.size.height = self.contentView.frame.size.height - 20;
  subView.frame = cRect;
  //自定義按鈕的文字大小
  if (subView.subviews.count == 1 && self.indexPath.section == 0) {//表示有一個按鈕
  UIButton * deleteButton = subView.subviews[0];
  deleteButton.titleLabel.font = [UIFont systemFontOfSize:20];
  }
  //自定義按鈕的圖片
  if (subView.subviews.count == 1 && self.indexPath.section == 1) {//表示有一個按鈕
  UIButton * deleteButton = subView.subviews[0];
  [deleteButton setImage:[UIImage imageNamed:@"login_btn_message"] forState:UIControlStateNormal];
  [deleteButton setTitle:@"" forState:UIControlStateNormal];
  }
  //自定義按鈕的文字圖片
  if (subView.subviews.count >= 2 && self.indexPath.section == 0) {//表示有兩個按鈕
  UIButton * deleteButton = subView.subviews[1];
  UIButton * shareButton = subView.subviews[0];
  [deleteButton setTitle:@"" forState:UIControlStateNormal];
  [shareButton setTitle:@"" forState:UIControlStateNormal];
  [self setUpDeleteButton:deleteButton];
  [self setUpShareButton:shareButton];
  }
 }
 }
}

/**自定義設置iOS11系統(tǒng)下的左滑刪除按鈕大小*/
//開始編輯左滑刪除
- (void)tableView:(UITableView *)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath {
 NSInteger section = indexPath.section;
 if (@available(iOS 11.0, *)) {
  for (UIView * subView in self.customTableView.subviews) {
   if ([subView isKindOfClass:NSClassFromString(@"UISwipeActionPullView")]) {
    subView.backgroundColor = [UIColor clearColor];//如果自定義只有一個按鈕就要去掉按鈕默認紅色背景
    //設置按鈕frame
    for (UIView * sonView in subView.subviews) {
     if ([sonView isKindOfClass:NSClassFromString(@"UISwipeActionStandardButton")]) {
      CGRect cRect = sonView.frame;
      cRect.origin.y = sonView.frame.origin.y + 10;
      cRect.size.height = sonView.frame.size.height - 20;
      sonView.frame = cRect;
     }
    }
    //自定義按鈕的文字大小
    if (subView.subviews.count == 1 && section == 0) {//表示有一個按鈕
     UIButton * deleteButton = subView.subviews[0];
     deleteButton.titleLabel.font = [UIFont systemFontOfSize:20];
    }
    //自定義按鈕的圖片
    if (subView.subviews.count == 1 && section == 1) {//表示有一個按鈕
     UIButton * deleteButton = subView.subviews[0];
     [deleteButton setImage:[UIImage imageNamed:@"login_btn_message"] forState:UIControlStateNormal];;
    }
    //自定義按鈕的文字圖片
    if (subView.subviews.count >= 2 && section == 0) {//表示有兩個按鈕
     UIButton * deleteButton = subView.subviews[1];
     UIButton * shareButton = subView.subviews[0];
     [self setUpDeleteButton:deleteButton];
     [self setUpShareButton:shareButton];
    }
   }
  }
 }
}

//結(jié)束編輯左滑刪除
- (void)tableView:(UITableView *)tableView didEndEditingRowAtIndexPath:(NSIndexPath *)indexPath {

}
如果我們想分別設置UITableViewCell是否需要實現(xiàn)左滑功能，可以在下面代理方法中實現(xiàn)：

//判斷是否顯示左滑刪除
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
 return YES;
}