Files
real-e-party-iOS/YuMi/E-P/NewMoments/Controllers/EPMomentViewController.m
edwinQQQ 8b177e5fad fix: 消除 TabBar 切换时的页面闪烁问题
核心修复:
1. 移除导航栏动画冲突
   - 移除 viewWillAppear 中的 navigationBar 隐藏逻辑
   - ViewController 未包装在 NavigationController 中,调用导航栏方法会触发冗余动画

2. 禁用 UITabBarController 默认切换动画
   - 设置 UITabBarControllerDelegate
   - animationControllerForTransitionFrom 返回 nil 禁用系统动画
   - 使用 UIView.performWithoutAnimation 确保无动画切换

3. 修复背景色未定义导致的白色闪烁
   - 显式设置浅灰色背景作为兜底 (RGB: 0.95, 0.95, 0.97)
   - 添加背景图片的 contentMode 和 clipsToBounds 属性
   - 确保背景图片加载延迟时不显示白色

修复后效果:
- Tab 切换流畅无闪烁,仅保留按钮缩放动画
- 背景色始终一致,无白色背景闪现
- 性能提升,消除多个动画冲突
2025-10-10 15:58:23 +08:00

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//
// EPMomentViewController.m
// YuMi
//
// Created by AI on 2025-10-09.
// Copyright © 2025 YuMi. All rights reserved.
//
#import "EPMomentViewController.h"
#import "EPMomentCell.h"
#import "Api+Moments.h"
#import "AccountInfoStorage.h"
#import "MomentsInfoModel.h"
@interface EPMomentViewController () <UITableViewDelegate, UITableViewDataSource>
// MARK: - UI Components
/// 主列表(卡片式布局)
@property (nonatomic, strong) UITableView *tableView;
/// 刷新控件
@property (nonatomic, strong) UIRefreshControl *refreshControl;
/// 发布按钮
@property (nonatomic, strong) UIButton *publishButton;
// MARK: - Data
/// 动态数据源MomentsInfoModel 数组)
@property (nonatomic, strong) NSMutableArray<MomentsInfoModel *> *dataSource;
/// 当前页码
@property (nonatomic, assign) NSInteger currentPage;
/// 是否正在加载
@property (nonatomic, assign) BOOL isLoading;
@end
@implementation EPMomentViewController
// MARK: - Lifecycle
- (void)viewDidLoad {
[super viewDidLoad];
self.title = @"动态";
[self setupUI];
[self loadData];
NSLog(@"[EPMomentViewController] 页面加载完成");
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
// 注意:当前 ViewController 没有包装在 NavigationController 中
// 如果未来需要导航栏,应该在 TabBarController 中包装 UINavigationController
}
// MARK: - Setup UI
- (void)setupUI {
// 先设置纯色背景作为兜底,避免白色闪烁
self.view.backgroundColor = [UIColor colorWithRed:0.95 green:0.95 blue:0.97 alpha:1.0];
UIImageView *bgImageView = [[UIImageView alloc] initWithImage:kImage(@"vc_bg")];
bgImageView.contentMode = UIViewContentModeScaleAspectFill;
bgImageView.clipsToBounds = YES;
[self.view addSubview:bgImageView];
[bgImageView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.mas_equalTo(self.view);
}];
// TableView
[self.view addSubview:self.tableView];
[self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(self.view);
}];
// TODO: 调整为右上角
[self.view addSubview:self.publishButton];
[self.publishButton mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.equalTo(self.view).offset(-20);
make.bottom.equalTo(self.view).offset(-100); // 避开 TabBar
make.size.mas_equalTo(CGSizeMake(56, 56));
}];
NSLog(@"[EPMomentViewController] UI 设置完成");
}
// MARK: - Data Loading
- (void)loadData {
if (self.isLoading) return;
self.isLoading = YES;
NSLog(@"[EPMomentViewController] 开始加载数据,页码: %ld", (long)self.currentPage);
// 调用真实 API 加载动态列表
NSString *page = [NSString stringWithFormat:@"%ld", (long)self.currentPage];
NSString *pageSize = @"10";
NSString *types = @"0,2"; // 类型0=图片2=文字
@kWeakify(self);
[Api momentsRecommendList:^(BaseModel * _Nullable data, NSInteger code, NSString * _Nullable msg) {
@kStrongify(self);
self.isLoading = NO;
[self.refreshControl endRefreshing];
if (code == 200 && data.data) {
// 解析数据
NSArray *list = [MomentsInfoModel mj_objectArrayWithKeyValuesArray:data.data];
if (list.count > 0) {
[self.dataSource addObjectsFromArray:list];
self.currentPage++;
[self.tableView reloadData];
NSLog(@"[EPMomentViewController] 加载成功,新增 %lu 条动态", (unsigned long)list.count);
} else {
NSLog(@"[EPMomentViewController] 没有更多数据");
}
} else {
NSLog(@"[EPMomentViewController] 加载失败: code=%ld, msg=%@", (long)code, msg);
// 如果 API 失败,显示提示
if (self.dataSource.count == 0) {
// 首次加载失败,显示空状态
[self showAlertWithMessage:msg ?: @"加载失败"];
}
}
} page:page pageSize:pageSize types:types];
}
- (void)onRefresh {
self.currentPage = 0;
[self.dataSource removeAllObjects];
[self loadData];
}
// MARK: - Actions
- (void)onPublishButtonTapped {
NSLog(@"[EPMomentViewController] 发布按钮点击");
// TODO: 跳转到发布页面
[self showAlertWithMessage:@"发布功能开发中"];
}
- (void)showAlertWithMessage:(NSString *)message {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示"
message:message
preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
[self presentViewController:alert animated:YES completion:nil];
}
// MARK: - UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.dataSource.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
EPMomentCell *cell = [tableView dequeueReusableCellWithIdentifier:@"NewMomentCell" forIndexPath:indexPath];
if (indexPath.row < self.dataSource.count) {
MomentsInfoModel *model = self.dataSource[indexPath.row];
[cell configureWithModel:model];
}
return cell;
}
// MARK: - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
NSLog(@"[EPMomentViewController] 点击动态: %ld", (long)indexPath.row);
// TODO: 跳转到详情页
[self showAlertWithMessage:[NSString stringWithFormat:@"点击了第 %ld 条动态", (long)indexPath.row]];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewAutomaticDimension;
}
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 200;
}
// 滚动到底部时加载更多
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
CGFloat offsetY = scrollView.contentOffset.y;
CGFloat contentHeight = scrollView.contentSize.height;
CGFloat screenHeight = scrollView.frame.size.height;
if (offsetY > contentHeight - screenHeight - 100 && !self.isLoading) {
[self loadData];
}
}
// MARK: - Lazy Loading
- (UITableView *)tableView {
if (!_tableView) {
_tableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
_tableView.delegate = self;
_tableView.dataSource = self;
_tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
_tableView.backgroundColor = [UIColor clearColor]; // 透明背景,显示下层背景图
_tableView.estimatedRowHeight = 200;
_tableView.rowHeight = UITableViewAutomaticDimension;
_tableView.showsVerticalScrollIndicator = NO;
_tableView.contentInset = UIEdgeInsetsMake(10, 0, 10, 0);
// 注册 Cell
[_tableView registerClass:[EPMomentCell class] forCellReuseIdentifier:@"NewMomentCell"];
// 添加下拉刷新
_tableView.refreshControl = self.refreshControl;
}
return _tableView;
}
- (UIRefreshControl *)refreshControl {
if (!_refreshControl) {
_refreshControl = [[UIRefreshControl alloc] init];
[_refreshControl addTarget:self action:@selector(onRefresh) forControlEvents:UIControlEventValueChanged];
}
return _refreshControl;
}
- (UIButton *)publishButton {
if (!_publishButton) {
_publishButton = [UIButton buttonWithType:UIButtonTypeCustom];
_publishButton.backgroundColor = [UIColor colorWithRed:0.2 green:0.6 blue:0.86 alpha:1.0]; // 主色调
_publishButton.layer.cornerRadius = 28;
_publishButton.layer.shadowColor = [UIColor blackColor].CGColor;
_publishButton.layer.shadowOffset = CGSizeMake(0, 2);
_publishButton.layer.shadowOpacity = 0.3;
_publishButton.layer.shadowRadius = 4;
// 设置图标(暂时使用文字)
[_publishButton setTitle:@"+" forState:UIControlStateNormal];
_publishButton.titleLabel.font = [UIFont systemFontOfSize:32 weight:UIFontWeightLight];
[_publishButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[_publishButton addTarget:self action:@selector(onPublishButtonTapped) forControlEvents:UIControlEventTouchUpInside];
}
return _publishButton;
}
- (NSMutableArray *)dataSource {
if (!_dataSource) {
_dataSource = [NSMutableArray array];
}
return _dataSource;
}
@end