iOS开发自定义页脚和页眉技巧详解 iOS开发自定义页脚和页眉技巧

前言
I 自定义页脚和页眉

1.1 自定义分组页眉的步骤
1.2 实现UITableViewHeaderFooterView
1.3 其他案例

II titleForHeaderInSection

前言应用场景：

商品管理列表的页眉显示商品数量和批量操作

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修改界面对密码规则的说明

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I 自定义页脚和页眉如果系统的APItitleForHeaderInSection 满足不了你的需求，可以自定义UITableViewHeaderFooterView。

1.1 自定义分组页眉的步骤
自定义UITableViewHeaderFooterView的步骤:

[_tableView registerClass:[CRMPasswordRuleDescHeaderFooterView class] forHeaderFooterViewReuseIdentifier:@"CRMPasswordRuleDescHeaderFooterView"];

创建

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{CRMPasswordRuleDescHeaderFooterView *footerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"CRMPasswordRuleDescHeaderFooterView"]; //footerView.type = self.type; footerView.models = self.viewModel.passwordRuleDescModel; return footerView; }

实现UITableViewHeaderFooterView

1.2 实现UITableViewHeaderFooterView
案例：密码规则的说明 .h

#import #import "CRMPasswordRuleDescV.h"NS_ASSUME_NONNULL_BEGIN@interface CRMPasswordRuleDescHeaderFooterView : UITableViewHeaderFooterView@property (nonatomic,weak) CRMPasswordRuleDescV *cellView; @property (nonatomic, strong) CRMPasswordRuleDescModel* models; @end

- (instancetype)initWithReuseIdentifier:(NSString *)reuseIdentifier{if (self = [super initWithReuseIdentifier:reuseIdentifier]) {[self selfInit]; //[self createSubView]; //[self addConstraints]; //[self bindViewModel]; }return self; }- (void)selfInit{self.backgroundColor = [UIColor whiteColor]; //UITableViewHeaderFooterView//[self bgBottomView]; [self cellView]; //UITapGestureRecognizer *cutTap = [[UITapGestureRecognizer alloc] init]; //[[cutTap rac_gestureSignal] subscribeNext:^(id x) {//////NSLog(@" cutTap 点击了 "); //self.models.gotype = QCTreturnOrderModelblockType4jumpDetail; //if ( self.models.block) {//self.models.block(self.models); //}//////}]; //[self addGestureRecognizer:cutTap]; ////}/** */- (void)setModels:( id)models{_models =models; self.cellView.models = models; }- (CRMPasswordRuleDescV *)cellView{if (nil == _cellView) {CRMPasswordRuleDescV *tmpView = [[CRMPasswordRuleDescV alloc]init]; _cellView = tmpView; _cellView.backgroundColor = rgb(255,255,255); [self.contentView addSubview:_cellView]; __weak __typeof__(self) weakSelf = self; [_cellView mas_makeConstraints:^(MASConstraintMaker *make) {//make.left.equalTo(weakSelf.contentView).offset(kAdjustRatio(0)); //make.right.equalTo(weakSelf.contentView).offset(- kAdjustRatio(0)); make.left.equalTo(weakSelf.contentView).offset(kAdjustRatio(0)); make.right.equalTo(weakSelf.contentView).offset(- kAdjustRatio(0)); make.top.equalTo(weakSelf.contentView).offset(kAdjustRatio(0)); make.bottom.equalTo(weakSelf.contentView).offset(kAdjustRatio(0)); }]; }return _cellView; }

CRMPasswordRuleDescV.h

#import "CRMPasswordRuleDescModel.h"NS_ASSUME_NONNULL_BEGIN@interface CRMPasswordRuleDescV : UIView@property (nonatomic, strong) CRMPasswordRuleDescModel* models; @property (nonatomic,weak) UILabel *titleLab; @end

CRMPasswordRuleDescV.m

- (instancetype)init {self = [super init]; if (self) {////既然nil解析成NO，所以没有必要在条件语句比较。不要拿某样东西直接与YES比较，因为YES被定义为1// ...[self titleLab]; }return self; }- (UILabel *)titleLab{if (nil == _titleLab) {UILabel *header = [[UILabel alloc]init]; _titleLab = header; [self addSubview:_titleLab]; header.textColor =rgb(153,153,153); header.font = kPingFangNOkAdjustRatioFont(13); //tmp.backgroundColor = ; header.numberOfLines = 0; //header.contentView.backgroundColor = self.tableView.backgroundColor; __weak __typeof__(self) weakSelf = self; [header mas_makeConstraints:^(MASConstraintMaker *make) {make.top.equalTo(weakSelf).offset(kAdjustRatio(13)); make.left.equalTo(weakSelf).offset(kAdjustRatio(20)); make.right.equalTo(weakSelf).offset(kAdjustRatio(-20)); make.bottom.equalTo(weakSelf).offset(kAdjustRatio(-13)); }]; }return _titleLab; }- (void)setModels:(CRMPasswordRuleDescModel *)models{_models = models; self.titleLab.text = models.title; }

1.3 其他案例

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- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{switch (section) {case CRMRisk_merchant_editVSection4basicInfo:{return kAdjustRatio(30); }break; case CRMRisk_merchant_editVSection4UploadMaterials:{return kAdjustRatio(30); }break; default:{return kAdjustRatio(0); }break; }}- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{UIView *bacView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, kWidth, kAdjustRatio(30))]; bacView.backgroundColor = rgb(248, 248, 248); bacView.height = KWratio(25); UILabel *titLab = [ControlManager text:@"基本信息" font:displayFontSize(12.0f) color:HWColor(153, 153, 153) alingment:0 fontWithName:@"PingFang-SC-Medium"]; [bacView addSubview:titLab]; [titLab mas_makeConstraints:^(MASConstraintMaker *make) {make.left.offset(KWratio(15)); make.centerY.offset(KWratio(0)); }]; switch (section) {case CRMRisk_merchant_editVSection4basicInfo:{titLab.text = @"基本信息"; }break; case CRMRisk_merchant_editVSection4UploadMaterials:{titLab.text = @"风险处理"; }break; default:{titLab.text = @""; }break; }return bacView; //UIView *tmp = [UIView new]; ////tmp.backgroundColor = self.backgroundColor; ////return tmp; }

II titleForHeaderInSection

//修改 tableViewSectionHeader 字体及背景色-(void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section{UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view; header.textLabel.textColor =rgb(153,153,153); header.textLabel.font = kPingFangFont(13); header.textLabel.numberOfLines = 0; header.contentView.backgroundColor = self.tableView.backgroundColor; }- (NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{if (CRM_Change_PasswordViewSectionEnum4SurePassword ==section) {return QCTLocal(@"新密码不少于6位，须包含大小写字母，数字和特殊字符"); }return nil; }

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