自动布局的 UI 使用，支持屏幕自适应

快速开始

1. 在您的 [Podfile] 中

pod 'NODataPlaceholderView', '~> 0.0.1'

或将 'UIScrollView+NoDataExtend' 移动到您的项目中

2.#Import "UIScrollView+NoDataExtend.h"

文档

• 设置子视图

- (void)setupNodataView {
__weak typeof(self) weakSelf = self;

self.tableView.noDataPlaceholderDelegate = self;

self.tableView.customNoDataView = ^UIView * _Nonnull{
if (weakSelf.tableView.xy_loading) {
UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
[activityView startAnimating];
return activityView;
}else {
return nil;
}

};

self.tableView.noDataTextLabelBlock = ^(UILabel * _Nonnull textLabel) {
textLabel.backgroundColor = [UIColor clearColor];
textLabel.font = [UIFont systemFontOfSize:27.0];
textLabel.textColor = [UIColor colorWithWhite:0.6 alpha:1.0];
textLabel.textAlignment = NSTextAlignmentCenter;
textLabel.lineBreakMode = NSLineBreakByWordWrapping;
textLabel.numberOfLines = 0;
textLabel.attributedText = [weakSelf attributedStringWithText:@"没有正在下载的歌曲" color:[UIColor grayColor] fontSize:16];;
};

self.tableView.noDataDetailTextLabelBlock = ^(UILabel * _Nonnull detailTextLabel) {
detailTextLabel.backgroundColor = [UIColor clearColor];
detailTextLabel.font = [UIFont systemFontOfSize:17.0];
detailTextLabel.textColor = [UIColor colorWithWhite:0.6 alpha:1.0];
detailTextLabel.textAlignment = NSTextAlignmentCenter;
detailTextLabel.lineBreakMode = NSLineBreakByWordWrapping;
detailTextLabel.numberOfLines = 0;
detailTextLabel.attributedText = [weakSelf attributedStringWithText:@"可以去下载历史，批量找回下载过的歌曲" color:[UIColor grayColor] fontSize:16];
};



self.tableView.noDataImageViewBlock = ^(UIImageView * _Nonnull imageView) {
imageView.backgroundColor = [UIColor clearColor];
imageView.contentMode = UIViewContentModeScaleAspectFit;
imageView.userInteractionEnabled = NO;
imageView.image = [UIImage imageNamed:@"qqMusic_empty"];

};

self.tableView.noDataReloadButtonBlock = ^(UIButton * _Nonnull reloadButton) {
reloadButton.backgroundColor = [UIColor clearColor];
reloadButton.layer.borderWidth = 0.5;
reloadButton.layer.borderColor = [UIColor colorWithRed:49/255.0 green:194/255.0 blue:124/255.0 alpha:1.0].CGColor;
reloadButton.layer.cornerRadius = 2.0;
[reloadButton.layer setMasksToBounds:YES];
// 按钮内部控件垂直对齐方式为中心
reloadButton.contentVerticalAlignment = UIControlContentHorizontalAlignmentCenter;
reloadButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
[reloadButton setAttributedTitle:[weakSelf attributedStringWithText:@"查看下载历史" color:[UIColor colorWithRed:49/255.0 green:194/255.0 blue:124/255.0 alpha:1.0] fontSize:15.0] forState:UIControlStateNormal];
[reloadButton setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

};


self.tableView.noDataTextEdgeInsets = UIEdgeInsetsMake(20, 0, 20, 0);
self.tableView.noDataButtonEdgeInsets = UIEdgeInsetsMake(20, 100, 11, 100);
}

• 设置 noDataPlaceholderDelegate

////////////////////////////////////////////////////////////////////////
#pragma mark - NoDataPlaceholderDelegate
////////////////////////////////////////////////////////////////////////

- (void)noDataPlaceholder:(UIScrollView *)scrollView didClickReloadButton:(UIButton *)button {
[self getDataFromServer];
}

- (BOOL)noDataPlaceholderShouldAllowScroll:(UIScrollView *)scrollView {
return YES;
}

- (void)noDataPlaceholder:(UIScrollView *)scrollView didTapOnContentView:(UITapGestureRecognizer *)tap {
[self getDataFromServer];
}


- (CGFloat)contentOffsetYForNoDataPlaceholder:(UIScrollView *)scrollView {
if ([UIDevice currentDevice].orientation == UIDeviceOrientationPortrait) {
return 80;
}
return 30;
}

- (void)noDataPlaceholderWillAppear:(UIScrollView *)scrollView {
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

}

- (void)noDataPlaceholderDidDisappear:(UIScrollView *)scrollView {
self.tableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
}