我想要一个黑色的背景，mj_refresh 背景黑色
第0种方法：设置UIView的
view.layer.maskedCorners
代码：
_backView = [[UIView alloc] initWithFrame:CGRectMake(0, k_Height_StatusBar + k_Height_NavContentBar, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height - k_Height_StatusBar - k_Height_NavContentBar)];
self.backView.layer.masksToBounds = YES;
self.backView.layer.cornerRadius = [UIScreen mainScreen].bounds.size.width/375*20;
self.backView.layer.maskedCorners = kCALayerMinXMinYCorner | kCALayerMaxXMinYCorner; // 设置某一个角（自动布局可用）
self.backView.clipsToBounds = YES; // 设置这个属性，子视图超出边界裁剪掉
self.backView.backgroundColor = [UIColor whiteColor];
[self.view addSubview:self.backView];
其中：设置四个角
typedef NS_OPTIONS (NSUInteger, CACornerMask)
{
kCALayerMinXMinYCorner = 1U << 0, // 左上角
kCALayerMaxXMinYCorner = 1U << 1, // 右上角
kCALayerMinXMaxYCorner = 1U << 2, // 左下角
kCALayerMaxXMaxYCorner = 1U << 3, // 右下角
};
第一种方法：
一、
1、原理：设置一个黑色的UIview在mj_refresh（mj_refresh也是insertSubview在tableview上的）之后insertSubview:添加到tableview上，在设置headerView的圆角。
2、改变y偏移量contentOffset.y
IMG_7078.PNG
- (void)viewDidLoad {
[super viewDidLoad];
self.titleLabel.text = @"比赛详情";
self.view.backgroundColor = ColorGlobalBalck;
[self setupUI];
self.tableView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
[self gainMatchDetailRequest];
}];
[self.tableView.mj_header beginRefreshing];
// 设置刷新背景：
UIView *backgroundView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 0)];
backgroundView.backgroundColor = ColorGlobalBalck;
[self.tableView insertSubview:backgroundView atIndex:0];
self.backgroundView = backgroundView;
}
二、（切圆角方法 1.）
- (void)setupUI {
_tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, k_Height_StatusBar + k_Height_NavContentBar, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height - k_Height_StatusBar - k_Height_NavContentBar) style:UITableViewStyleGrouped];
// self.tableView.backgroundColor = [UIColor whiteColor];
self.tableView.backgroundColor = ColorGlobalBalck;
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
[self.view addSubview:self.tableView];
self.tableView.tableHeaderView = self.tableDetailHeaderView;
// 设置圆角：
_backView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.tableView.frame.size.width, self.tableView.frame.size.height)];
_backView.backgroundColor = ColorGlobalBalck;
// [self.view addSubview:self.backView];
// [self.tableView addSubview:self.backView];
self.tableView.backgroundView = self.backView;
UIBezierPath *bezierPath = [UIBezierPath
bezierPathWithRoundedRect:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height - k_Height_StatusBar - k_Height_NavContentBar)
byRoundingCorners:UIRectCornerTopLeft | UIRectCornerTopRight
cornerRadii:CGSizeMake([UIScreen mainScreen].bounds.size.width/375*20, [UIScreen mainScreen].bounds.size.width/375*20)];
CAShapeLayer *layer = [[CAShapeLayer alloc] init];
layer.lineWidth = [UIScreen mainScreen].bounds.size.width/375*0.1;
// 圆环的颜色
layer.strokeColor = RGBA(248, 249, 250, 1).CGColor;
// 背景填充色
layer.fillColor = RGBA(248, 249, 250, 1).CGColor;
layer.path = [bezierPath CGPath];
[self.backView.layer addSublayer:layer];
}
三、改变y偏移量
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
// 设置刷新背景：
CGRect frame = self.backgroundView.frame;
frame.origin.y = scrollView.contentOffset.y;
frame.size.height = -scrollView.contentOffset.y;
self.backgroundView.frame = frame;
}
第二种方法：（切圆角方法 2.）
原理：在tableHeaderView的一个UIView，在这个headerView上添加一个backView，直接正常切backView的圆角： self.layer.masksToBounds = YES;
#import "GWTeamInfoCompetitionHeaderView.h"
@interface GWTeamInfoCompetitionHeaderView ()
@property (nonatomic, strong) UIView *backView;
@end
@implementation GWTeamInfoCompetitionHeaderView
- (instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = ColorGlobalBalck;
self.layer.masksToBounds = YES;
[self setupUI];
}
return self;
}
- (void)setupUI {
_backView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, [UIScreen mainScreen].bounds.size.width/375*40)];
self.backView.backgroundColor = RGBA(248, 249, 250, 1);
self.backView.layer.masksToBounds = YES;
self.backView.layer.cornerRadius = [UIScreen mainScreen].bounds.size.width/375*40/2;
[self addSubview:self.backView];
}
@end
使用：
// self.tableView.tableHeaderView = self.myTableHeaderView;
- (GWTeamInfoCompetitionHeaderView *)myTableHeaderView {
if (!_myTableHeaderView) {
_myTableHeaderView = [[GWTeamInfoCompetitionHeaderView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.width/375*20)];
}
return _myTableHeaderView;
}
