1.自定义左滑样式
单个左滑按钮的情况下可以使用图片转color的方式设置UITableViewRowAction的背景色：
- (NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewRowAction *deleteAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
//删除动作
}];
deleteAction.backgroundColor = [UIColor colorWithPatternImage:[self setBackImageView]];
return @[deleteAction];
}
//自定义视图
-(UIImage *)setBackImageView{
UIButton *btn = [UIButton buttonWithType:0];
btn.frame = CGRectMake(0, 0, 100, 124);
btn.backgroundColor = kMainColor;
UIImageView *imageV = [[UIImageView alloc] initWithFrame:CGRectMake(30, 46, 16, 18)];
imageV.image = kIMAGE_Name(@"shop_car_deleteIcon1");
[btn addSubview:imageV];
UILabel *titleLabel = [btn createLabelFrame:CGRectMake(20, 70, 36, 20) textColor:kWhiteColor font:kFont(13)];
titleLabel.text = @"删除";
titleLabel.textAlignment = NSTextAlignmentCenter;
return [UIView convertViewToImage:btn];
}
view的扩展方法
@implementation UIView (Extention)
//View转Image
//使用该方法不会模糊，根据屏幕密度计算
+ (UIImage *)convertViewToImage:(UIView *)view {
UIImage *imageRet = [[UIImage alloc]init];
//UIGraphicsBeginImageContextWithOptions(区域大小, 是否是非透明的, 屏幕密度);
UIGraphicsBeginImageContextWithOptions(view.frame.size, YES, [UIScreen mainScreen].scale);
[view.layer renderInContext:UIGraphicsGetCurrentContext()];
imageRet = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return imageRet;
}
@end
这时候可能会出现UI上的瑕疵，如图：
image.png
图上的浅灰色是由于视图
UISwipeActionPullView的默认背景色，这时候就需要找到对应的视图进行更改
2.查找UISwipeActionPullView
step1.在tableview的代理方法willBeginEditingRowAtIndexPath里调用
这一步必须进行，否则当前控制器的viewWillLayoutSubviews不会执行
[self.view setNeedsLayout];
step2.重写viewWillLayoutSubviews方法，查找到UISwipeActionPullView
-(void)viewWillLayoutSubviews{
[super viewWillLayoutSubviews];
UIView *targetView;
for (UIView *t_subView in self.shopcartTableView.subviews) {
if (@available(iOS 13.0, *)) {
if ([NSStringFromClass([t_subView class]) isEqualToString:@"_UITableViewCellSwipeContainerView"]) {
for (UIView *t2_subView in t_subView.subviews) {
if ([NSStringFromClass([t2_subView class]) isEqualToString:@"UISwipeActionPullView"]){
targetView = t2_subView;
}
}
}
} else {
if ([NSStringFromClass([t_subView class]) isEqualToString:@"UISwipeActionPullView"]){
targetView = t_subView;
}
}
targetView.backgroundColor = kBackgroundColor;
NSLog(@"====%@",targetView);
}
}
