tableView numberOfRowsInSection:(NSInteger)section;不执行

最新推荐文章于 2020-12-10 14:05:11 发布
原创 最新推荐文章于 2020-12-10 14:05:11 发布 · 3.4k 阅读 · 1 ·
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本文针对TableView在使用过程中可能遇到的问题进行了详细的分析，并列举了三种典型的情况：cellForRowAtIndexPath返回0，numberofrowsinsection返回0，以及TableView的frame设置错误等。通过本文的学习可以帮助开发者快速定位并解决TableView的相关问题。

分三种情况

1， cellForRowAtIndexPath 返回0

2，numberofrowsinsection：返回0

3，最容易忽视，却客观存在的  tableview的frame 设置出错，如height设置为0或负数

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[self.view addSubview:self.tpbInnerSearchBar]; } - (void)tpbMakeConstraint { [super tpbMakeConstraint]; [self.emptyView mas_remakeConstraints:^(MASConstraintMaker *make) { make.leading.trailing.equalTo(self.mas_tpSafeAreaLayoutGuide); self.emptyCenterYConstraint = make.centerY.equalTo(self.mas_tpSafeAreaLayoutGuide); }]; [self.tableView mas_remakeConstraints:^(MASConstraintMaker *make) { make.top.equalTo(self.mas_tpSafeAreaLayoutGuide); make.leading.trailing.equalTo(self.mas_tpSafeAreaLayoutGuide); make.bottom.equalTo(self.view); }]; CGFloat searchHeight = [self.tpbInnerSearchBar preferredHeight]; [self.tpbInnerSearchBar mas_remakeConstraints:^(MASConstraintMaker *make) { self.searchBarTopConstraint = make.top.equalTo(self.mas_tpSafeAreaLayoutGuide).offset(0); make.leading.trailing.equalTo(self.mas_tpSafeAreaLayoutGuide); self.searchBarHeightConstraint = make.height.equalTo(@(searchHeight)); }]; } - (void)tpbBindActions { [super tpbBindActions]; TPBWeakSelf [self tpbAddContentSizeDidChangeConfig:^(id _Nonnull object, TPBDynamicContentManager * _Nonnull manager) { TPBStrongSelf dispatch_async(dispatch_get_main_queue(), ^{ [_self updateTableHeader]; [_self.tableView reloadData]; }); } notifyWhenRegister:NO]; } - (void)viewWillLayoutSubviews { [super viewWillLayoutSubviews]; [self.view bringSubviewToFront:self.tpbInnerSearchBar]; [self updateSearchBarPosition]; } #pragma mark - Public - (void)setSectionArray:(NSArray<TPBTableSectionModel *> *)sectionArray { _sectionArray = sectionArray; [self.tableView reloadData]; } - (void)setSearchBarShow:(BOOL)searchBarShow { _searchBarShow = searchBarShow; self.tpbInnerSearchBar.hidden = !searchBarShow; [self updateTableHeader]; } - (NSString *)searchPlaceholder { return self.tpbInnerSearchBar.searchPlaceholder; } - (void)setSearchPlaceholder:(NSString *)searchPlaceholder { self.tpbInnerSearchBar.searchPlaceholder = searchPlaceholder; } - (void)updateSearchKey:(NSString *)searchKey { [self.tpbInnerSearchBar updateSearchKey:searchKey]; } - (void)setCustomTableHeaderView:(UIView *)customTableHeaderView { _customTableHeaderView = customTableHeaderView; [self updateTableHeader]; } - (void)setKeyboardBehavior:(TPBCommonTableKeyboardBehavior)keyboardBehavior { _keyboardBehavior = keyboardBehavior; switch (keyboardBehavior) { case TPBCommonTableKeyboardBehaviorDismissOnly: [self.view tpbRegisterForKeyboardEvent]; break; case TPBCommonTableKeyboardBehaviorDismissAndRespondClick: [self.view tpbRemoveForKeyboardEvent]; break; default: break; } } - (void)focusToFirstEligibleElement { NSIndexPath *indexPath = nil; for (NSUInteger section = 0; section < self.sectionArray.count; section++) { TPBTableSectionModel *sectionModel = self.sectionArray[section]; for (NSUInteger row = 0; row < sectionModel.cellModelArray.count; row++) { TPBBaseTableCellModel *cellModel = sectionModel.cellModelArray[row]; if (cellModel.isAutoFocusEnabled) { indexPath = [NSIndexPath indexPathForRow:row inSection:section]; break; } } if (indexPath != nil) break; } if (indexPath == nil) return; UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath]; if (cell == nil) return; if ([TPBA11yHelper isVoiceOverOn]) { UIAccessibilityPostNotification(UIAccessibilityScreenChangedNotification, cell); } else { [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES]; } } #pragma mark - UITableViewDataSource & UITableViewDelegate // 注册自定义Cell - (void)registerCustomCellWithCellModel:(TPBCustomTableCellBaseModel *)customCellModel tableView:(UITableView *)tableView cellIdentifier:(NSString *)cellIdentifier { if (customCellModel.cellClass != nil) { BOOL isCellClassValid = [customCellModel.cellClass isSubclassOfClass:[UITableViewCell class]]; BOOL isValid = isCellClassValid; NSAssert(isCellClassValid, @"TPBCustomBaseTableCellModel's cellClass「%@」is not Subclass of UITableViewCell!", NSStringFromClass(customCellModel.cellClass)); if (!isValid) { return; } // 注册Cell Class [tableView registerClass:customCellModel.cellClass forCellReuseIdentifier:cellIdentifier]; } else if (customCellModel.cellNib != nil) { // 注册Cell Nib [tableView registerNib:customCellModel.cellNib forCellReuseIdentifier:cellIdentifier]; } } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return self.sectionArray.count; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { if (section < 0 || self.sectionArray.count <= section) { return 0; } TPBTableSectionModel *sectionModel = self.sectionArray[section]; return sectionModel.cellModelArray.count; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { if (indexPath.section < 0 || self.sectionArray.count <= indexPath.section) { return [[UITableViewCell alloc] init]; } TPBTableSectionModel *sectionModel = self.sectionArray[indexPath.section]; if (indexPath.row < 0 || sectionModel.cellModelArray.count <= indexPath.row) { return [[UITableViewCell alloc] init]; } BOOL isRTL = self.view.effectiveUserInterfaceLayoutDirection == UIUserInterfaceLayoutDirectionRightToLeft; BOOL isLast = indexPath.row == sectionModel.cellModelArray.count - 1; TPBBaseTableCellModel *model = sectionModel.cellModelArray[indexPath.row]; switch (model.cellType) { case TPBTableCellTypeCustomCell: { if ([model isKindOfClass:[TPBCustomTableCellBaseModel class]]) { TPBCustomTableCellBaseModel *cellModel = (TPBCustomTableCellBaseModel *)model; NSString *cellIdentifier = [cellModel effectiveCellIdentifier:isRTL]; UITableViewCell *cell; if (TPBA11yHelper.isVoiceOverOn && cellModel.cellClass != nil) { cell = [[cellModel.cellClass alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } if (cell == nil) { // 若无法获取Cell，说明可能是未注册自定义Cell，则注册自定义Cell之后尝试重新取值 [self registerCustomCellWithCellModel:cellModel tableView:tableView cellIdentifier:cellIdentifier]; cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } if (cellModel.cellConfigCallback) { cellModel.cellConfigCallback(tableView, indexPath, cell, cellModel); } if ([cell isKindOfClass:[TPBBaseTableViewCell class]]) { TPBBaseTableViewCell *baseCell = (TPBBaseTableViewCell *)cell; [baseCell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; } return cell; } } break; case TPBTableCellTypeCustomView: { if ([model isKindOfClass:[TPBCustomViewTableCellModel class]]) { TPBCustomViewTableCellModel *cellModel = (TPBCustomViewTableCellModel *)model; NSString *cellIdentifier = [TPBCustomViewTableCell cellIdentifier:isRTL]; TPBCustomViewTableCell *cell; cell = [[TPBCustomViewTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeTitleSubtitle: { if ([model isKindOfClass:[TPBTitleSubtitleTableCellModel class]]) { TPBTitleSubtitleTableCellModel *cellModel = (TPBTitleSubtitleTableCellModel *)model; NSString *cellIdentifier = [TPBTitleSubtitleTableCell cellIdentifier:isRTL]; TPBTitleSubtitleTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBTitleSubtitleTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeSwitch: { if ([model isKindOfClass:[TPBSwitchTableCellModel class]]) { TPBSwitchTableCellModel *cellModel = (TPBSwitchTableCellModel *)model; NSString *cellIdentifier = [TPBSwitchTableCell cellIdentifier:isRTL]; TPBSwitchTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBSwitchTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeListButton: { if ([model isKindOfClass:[TPBListButtonTableCellModel class]]) { TPBListButtonTableCellModel *cellModel = (TPBListButtonTableCellModel *)model; NSString *cellIdentifier = [TPBListButtonTableCell cellIdentifier:isRTL]; TPBListButtonTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBListButtonTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeProgress: { if ([model isKindOfClass:[TPBProgressTableCellModel class]]) { TPBProgressTableCellModel *cellModel = (TPBProgressTableCellModel *)model; NSString *cellIdentifier = [TPBProgressTableCell cellIdentifier:isRTL]; TPBProgressTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBProgressTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeCommonInput: { if ([model isKindOfClass:[TPBCommonInputTableCellModel class]]) { TPBCommonInputTableCellModel *cellModel = (TPBCommonInputTableCellModel *)model; NSString *cellIdentifier = [TPBCommonInputTableCell cellIdentifier:isRTL]; TPBCommonInputTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBCommonInputTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } cell.inputDelegate = self; [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeCheck: { if ([model isKindOfClass:[TPBCheckTableCellModel class]]) { TPBCheckTableCellModel *cellModel = (TPBCheckTableCellModel *)model; BOOL isCustomizedCellHeight = cellModel.height.isCustomHeight; NSString *cellIdentifier = [TPBCheckTableCell cellIdentifier:isRTL]; TPBCheckTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBCheckTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel isCustomizedCellHeight:isCustomizedCellHeight]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeJumpSelect: { if ([model isKindOfClass:[TPBJumpSelectTableCellModel class]]) { TPBJumpSelectTableCellModel *cellModel = (TPBJumpSelectTableCellModel *)model; NSString *cellIdentifier = [TPBJumpSelectTableCell cellIdentifier:isRTL]; TPBJumpSelectTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBJumpSelectTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && TPBIsEmptyString(cellModel.title) && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeMenuSelect: { if ([model isKindOfClass:[TPBMenuSelectTableCellModel class]]) { TPBMenuSelectTableCellModel *cellModel = (TPBMenuSelectTableCellModel *)model; NSString *cellIdentifier = [TPBMenuSelectTableCell cellIdentifier:isRTL]; TPBMenuSelectTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBMenuSelectTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeListInput: { if ([model isKindOfClass:[TPBListInputTableCellModel class]]) { TPBListInputTableCellModel *cellModel = (TPBListInputTableCellModel *)model; NSString *cellIdentifier = [TPBListInputTableCell cellIdentifier:isRTL]; TPBListInputTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBListInputTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } cell.inputDelegate = self; [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; case TPBTableCellTypeTitleAction: { if ([model isKindOfClass:[TPBTitleActionTableCellModel class]]) { TPBTitleActionTableCellModel *cellModel = (TPBTitleActionTableCellModel *)model; NSString *cellIdentifier = [TPBTitleActionTableCell cellIdentifier:isRTL]; TPBTitleActionTableCell *cell; if (TPBA11yHelper.isVoiceOverOn) { cell = [[TPBTitleActionTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; } if (cell == nil) { cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; } [cell updateCellModel:cellModel]; [cell updateBottomSeparatorShow:!self.hideCellSeparator && !isLast && !cellModel.hideCellSeparator]; return cell; } } break; } return [[UITableViewCell alloc] init]; } - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { if (indexPath.section < 0 || self.sectionArray.count <= indexPath.section) { return UITableViewAutomaticDimension; } TPBTableSectionModel *sectionModel = self.sectionArray[indexPath.section]; if (indexPath.row < 0 || sectionModel.cellModelArray.count <= indexPath.row) { return UITableViewAutomaticDimension; } TPBBaseTableCellModel *cellModel = sectionModel.cellModelArray[indexPath.row]; if (cellModel.height.isCustomHeight) { return cellModel.height.customHeight; } return UITableViewAutomaticDimension; } // Header - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { if (section < 0 || self.sectionArray.count <= section) { return [UIView new]; } TPBTableSectionModel *sectionModel = self.sectionArray[section]; if (sectionModel.customHeaderView != nil) { return sectionModel.customHeaderView; } if (TPBIsEmptyString(sectionModel.headerTitle) && sectionModel.headerAction == nil) { return [UIView new]; } TPBTableTextSectionHeader *headerView = [TPBTableTextSectionHeader new]; [headerView updateSectionModel:sectionModel]; return headerView; } - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section { if (section < 0 || self.sectionArray.count <= section) { return TPBDesign.list.sectionHeaderHeight; } TPBTableSectionModel *sectionModel = self.sectionArray[section]; if (sectionModel.sectionHeaderHeight.isCustomHeight) { return sectionModel.sectionHeaderHeight.customHeight; } if (sectionModel.customHeaderView != nil) { return UITableViewAutomaticDimension; } if (TPBIsEmptyString(sectionModel.headerTitle) && sectionModel.headerAction == nil) { if (self.searchBarShow && section == 0) { return 10; } return TPBDesign.list.sectionHeaderHeight; } return UITableViewAutomaticDimension; } // Footer - (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section { if (section < 0 || self.sectionArray.count <= section) { return [UIView new]; } TPBTableSectionModel *sectionModel = self.sectionArray[section]; if (sectionModel.customFooterView != nil) { return sectionModel.customFooterView; } if (TPBIsEmptyString(sectionModel.footerTitle) && sectionModel.footerAction == nil) { return [UIView new]; } TPBTableTextSectionFooter *footerView = [TPBTableTextSectionFooter new]; [footerView updateSectionModel:sectionModel]; return footerView; } - (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section { if (section < 0 || self.sectionArray.count <= section) { return TPBDesign.list.sectionFooterHeight; } TPBTableSectionModel *sectionModel = self.sectionArray[section]; if (sectionModel.sectionFooterHeight.isCustomHeight) { return sectionModel.sectionFooterHeight.customHeight; } if (sectionModel.customFooterView != nil) { return UITableViewAutomaticDimension; } if (TPBIsEmptyString(sectionModel.footerTitle) && sectionModel.footerAction == nil) { return TPBDesign.list.sectionFooterHeight; } return UITableViewAutomaticDimension; } // TableViewCell点击 - (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath { [tableView deselectRowAtIndexPath:indexPath animated:NO]; if (indexPath.section < 0 || self.sectionArray.count <= indexPath.section) { return NO; } TPBTableSectionModel *sectionModel = self.sectionArray[indexPath.section]; if (indexPath.row < 0 || sectionModel.cellModelArray.count <= indexPath.row) { return NO; } TPBBaseTableCellModel *cellModel = sectionModel.cellModelArray[indexPath.row]; switch (cellModel.cellType) { case TPBTableCellTypeCustomCell: case TPBTableCellTypeCustomView: case TPBTableCellTypeTitleSubtitle: case TPBTableCellTypeSwitch: case TPBTableCellTypeCheck: case TPBTableCellTypeListButton: case TPBTableCellTypeJumpSelect: case TPBTableCellTypeMenuSelect: case TPBTableCellTypeProgress: case TPBTableCellTypeTitleAction: return YES; case TPBTableCellTypeCommonInput: case TPBTableCellTypeListInput: return NO; } } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [tableView deselectRowAtIndexPath:indexPath animated:NO]; if (indexPath.section < 0 || self.sectionArray.count <= indexPath.section) { return; } TPBTableSectionModel *sectionModel = self.sectionArray[indexPath.section]; if (indexPath.row < 0 || sectionModel.cellModelArray.count <= indexPath.row) { return; } if (self.keyboardBehavior == TPBCommonTableKeyboardBehaviorDismissAndRespondClick) { [self tpbHideKeyboard]; } TPBBaseTableCellModel *model = sectionModel.cellModelArray[indexPath.row]; switch (model.cellType) { case TPBTableCellTypeCustomCell: { if ([model isKindOfClass:[TPBCustomTableCellBaseModel class]]) { TPBCustomTableCellBaseModel *cellModel = (TPBCustomTableCellBaseModel *)model; if (cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } break; case TPBTableCellTypeCustomView: { if ([model isKindOfClass:[TPBCustomViewTableCellModel class]]) { TPBCustomViewTableCellModel *cellModel = (TPBCustomViewTableCellModel *)model; if (cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } break; case TPBTableCellTypeTitleSubtitle: { if ([model isKindOfClass:[TPBTitleSubtitleTableCellModel class]]) { TPBTitleSubtitleTableCellModel *cellModel = (TPBTitleSubtitleTableCellModel *)model; if (cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } break; case TPBTableCellTypeSwitch: { if ([model isKindOfClass:[TPBSwitchTableCellModel class]]) { TPBSwitchTableCellModel *cellModel = (TPBSwitchTableCellModel *)model; if (cellModel.switchDidClickHotZoneCallback) { cellModel.switchDidClickHotZoneCallback(); } } } break; case TPBTableCellTypeListButton: { if ([model isKindOfClass:[TPBListButtonTableCellModel class]]) { TPBListButtonTableCellModel *cellModel = (TPBListButtonTableCellModel *)model; if (cellModel.actionEnabled && cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } break; case TPBTableCellTypeCheck: { if ([model isKindOfClass:[TPBCheckTableCellModel class]]) { TPBCheckTableCellModel *cellModel = (TPBCheckTableCellModel *)model; if (cellModel.checkEnabled && cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } break; case TPBTableCellTypeJumpSelect: { if ([model isKindOfClass:[TPBJumpSelectTableCellModel class]]) { TPBJumpSelectTableCellModel *cellModel = (TPBJumpSelectTableCellModel *)model; if (cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } case TPBTableCellTypeTitleAction: { if ([model isKindOfClass:[TPBTitleActionTableCellModel class]]) { TPBTitleActionTableCellModel *cellModel = (TPBTitleActionTableCellModel *)model; if (cellModel.didSelectCellCallback) { cellModel.didSelectCellCallback(cellModel, indexPath); } } } break; case TPBTableCellTypeMenuSelect: break; case TPBTableCellTypeProgress: case TPBTableCellTypeCommonInput: case TPBTableCellTypeListInput: break; } } //- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{ // if (indexPath.row < 0 || indexPath.row >= self.cloudDeviceList.count) { // return NO; // } // TPBDMECDevice *ecDevice = self.cloudDeviceList[indexPath.row]; // return [self canForgetWithDevice:ecDevice]; //} //- (NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath { // if (indexPath.row < 0 || indexPath.row >= self.cloudDeviceList.count) { // return @[]; // } // TPBDMECDevice *ecDevice = self.cloudDeviceList[indexPath.row]; // TPBWeakSelf; // UITableViewRowAction *deleteAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:gControllerCloudAccess.controllerCloudAccessForget handler:^(UITableViewRowAction *action, NSIndexPath *indexPath){ // TPBStrongSelf; // [_self popAlertControlForUnbindActionWithECDevice:ecDevice]; // }]; // deleteAction.backgroundColor = [UIColor tpbRed]; // return @[deleteAction]; //} #pragma mark - UIScrollViewDelegate - (void)scrollViewDidScroll:(UIScrollView *)scrollView { [self updateSearchBarPosition]; } #pragma mark - TPBTableSearchHeaderDelegate - (void)tpbTableSearchHeaderHideKeyboard { [self tpbHideKeyboard]; } #pragma mark - TPBTableCommonInputDelegate - (void)tableCommonInputFieldDidClickReturn:(TPBCommonInputView *)inputView textField:(UITextField *)textField { [self handleUserClickReturnForTextField:textField]; } #pragma mark - TPBTableListInputDelegate - (void)tableListInputFieldDidClickReturn:(TPBListInputTableCell *)inputCell textField:(UITextField *)textField { [self handleUserClickReturnForTextField:textField]; } #pragma mark - Private - (void)updateSearchBarPosition { CGFloat tableY = self.tableView.frame.origin.y; CGRect convertedRect = [self.tpbSearchBarPlaceholderView convertRect:self.tpbSearchBarPlaceholderView.bounds toView:self.view]; CGFloat diffY = convertedRect.origin.y - tableY; CGFloat targetConstant = MAX(0, diffY); if (self.searchBarTopConstraint.tpbConstant != targetConstant) { self.searchBarTopConstraint.tpbConstant = targetConstant; } } // 用户点击UITextField键盘Return - (void)handleUserClickReturnForTextField:(UITextField *)textField { if (textField.returnKeyType != UIReturnKeyNext) { [textField resignFirstResponder]; return; } if ([self.tableView focusNextTextField]) { } else { [textField resignFirstResponder]; } } - (void)updateTableHeader { if (self.searchBarShow) { CGFloat searchBarHeight = [self.tpbInnerSearchBar preferredHeight]; self.tpbSearchBarPlaceholderView.frame = CGRectMake(0, 0, self.view.bounds.size.width, searchBarHeight); self.tableView.tableHeaderView = self.tpbSearchBarPlaceholderView; self.searchBarHeightConstraint.tpbConstant = searchBarHeight; } else if (self.customTableHeaderView) { self.tableView.tableHeaderView = self.customTableHeaderView; } else { UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, CGFLOAT_MIN)]; self.tableView.tableHeaderView = view; } } #pragma mark - Property - (TPBEmptyView *)emptyView { if (!_emptyView) { _emptyView = [TPBEmptyView new]; _emptyView.hidden = YES; } return _emptyView; } - (UIView *)tpbSearchBarPlaceholderView { if (!_tpbSearchBarPlaceholderView) { _tpbSearchBarPlaceholderView = [UIView new]; } return _tpbSearchBarPlaceholderView; } - (TPBTableSearchHeader *)tpbInnerSearchBar { if (!_tpbInnerSearchBar) { CGRect frame = CGRectMake(0, 0, self.view.bounds.size.width, 62); _tpbInnerSearchBar = [[TPBTableSearchHeader alloc] initWithFrame:frame]; _tpbInnerSearchBar.delegate = self; _tpbInnerSearchBar.hidden = YES; _tpbInnerSearchBar.backgroundColor = [UIColor tpbBackground]; } return _tpbInnerSearchBar; } - (UITableView *)tableView { if (!_tableView) { _tableView = [[TPKeyboardAvoidingTableView alloc] initWithFrame:CGRectZero style:self.tableViewStyle]; if (@available(iOS 13.0, *)) { _tableView.automaticallyAdjustsScrollIndicatorInsets = YES; } if (@available(iOS 15.0, *)) { UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, CGFLOAT_MIN)]; _tableView.tableHeaderView = view; _tableView.sectionHeaderTopPadding = 0; } _tableView.backgroundColor = [UIColor clearColor]; _tableView.estimatedRowHeight = 72; _tableView.estimatedSectionHeaderHeight = 68; _tableView.showsHorizontalScrollIndicator = NO; _tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag; _tableView.separatorStyle = UITableViewCellSeparatorStyleNone; _tableView.sectionIndexColor = [UIColor tpbTableSectionIndexColor]; _tableView.delegate = self; _tableView.dataSource = self; NSArray<Class> *cellClassArray = @[ [TPBCustomViewTableCell class], [TPBTitleSubtitleTableCell class], [TPBSwitchTableCell class], [TPBProgressTableCell class], [TPBCommonInputTableCell class], [TPBCheckTableCell class], [TPBJumpSelectTableCell class], [TPBMenuSelectTableCell class], [TPBListInputTableCell class], [TPBListButtonTableCell class], [TPBTitleActionTableCell class] ]; for (Class cls in cellClassArray) { if ([cls isSubclassOfClass:[TPBBaseTableViewCell class]]) { NSString *cellIdentifier = [cls cellIdentifier]; [_tableView registerClass:cls forCellReuseIdentifier:cellIdentifier]; NSString *rtlCellIdentifier = [cls cellIdentifier:YES]; [_tableView registerClass:cls forCellReuseIdentifier:rtlCellIdentifier]; NSString *ltrCellIdentifier = [cls cellIdentifier:NO]; [_tableView registerClass:cls forCellReuseIdentifier:ltrCellIdentifier]; } } } return _tableView; } @end
最新发布
12-03
// 注意：不需要重写 init(frame:)，除非你要传数据 } ``` --- ### ✅ 其他所有子类统一模板（推荐复制） ```swift fileprivate class StorageInfoView: TPBBaseView { private var label: UILabel? ...
if ([self.dataArray count] > 0) { ATLog(@"我已经进入%@ %i",self.dataArray,self.isFirstLoadMsg); NSInteger toRow = self.dataArray.count - 1; if (self.isFirstLoadMsg) { return; } NSIndexPath *toIndexPath = [NSIndexPath indexPathForRow:toRow inSection:0]; [self.tableView scrollToRowAtIndexPath:toIndexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO]; }出现了Last Exception Backtrace: 0 CoreFoundation 0x19daf508c __exceptionPreprocess + 164 (NSException.m:249) 1 libobjc.A.dylib 0x19adf72e4 objc_exception_throw + 88 (objc-exception.mm:356) 2 CoreFoundation 0x19dbf0648 +[NSException raise:format:] + 128 (NSException.m:0) 3 UIKitCore 0x1a153f684 -[UITableView _contentOffsetForScrollingToRowAtIndexPath:atScrollPosition:usingPresentationValues:] + 364 (UITableView.m:0) 4 UIKitCore 0x1a1540114 -[UITableView _scrollToRowAtIndexPath:atScrollPosition:animated:usingPresentationValues:] + 140 (UITableView.m:8321) 5 UIKitCore 0x1a153ffb8 -[UITableView scrollToRowAtIndexPath:atScrollPosition:animated:] + 124 (UITableView.m:8309) 6 云相册 0x1009697ec -[EMChatViewController _scrollToBottomRow] + 188
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NSIndexPath *toIndexPath = [NSIndexPath indexPathForRow:toRow inSection:section]; [self.tableView scrollToRowAtIndexPath:toIndexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO]; }...
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//返回行数 -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {     return [listData count]; } //返回一个cell，即每一行所要显示的内容 -(UITableViewCell*)tableView:(UITableVi
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必须实现的两个代理方法: //每组有多少行数据 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section; //每行数据要显示的内容 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowA
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官方例子tabster，SubLevelViewController文件中的代码。 m文件中的内容如下 @interface SubLevelViewController ()     @property (nonatomic, retain) NSArray *dataArray; @end @implementation SubLevelViewController
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郝旭的博客
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[size=x-large]视图需要我们自己去定义样式时用到了TableViewCell组件,效果如下[/size] [img]http://dl.iteye.com/upload/attachment/351794/b1ce7ac1-720f-3078-89e0-8d0d95792390.png[/img] [size=x-large]首先创建View Based App工程，在.xib文件...
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weixin_30325071的博客
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昨天在代码里遇到个问题，很简单的数组越界，但是真心觉得自己把数据处理的思路都理清了不应该会出现这种情况，而且打印出来出现了“灵异事件”，那就是行数只有14行，但是cell加载到了15行，我的天。。。。。 然后全局断点走起来，看到从下一个页面POP回来页面重新加载的时候numberOfRowsInSection方法根本没有被调用就直接开始调用了cellForRowAtIndexPath方法，这...
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出现这个问题有两种情况 第一种比如删除，那你在删除的时候 ，数据源必须删除。 如果你不删除数据源，那numberOfRowsInSection方法Array的长度是没有变化的。tablew刷新的时候就会检测数据源的长度和tablew显示的条目是不是一样的。如果不一样就抛出Assertion failure in这个异常。
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