ios - 数据大造成的界面卡住问题

Question

**我点击添加任务，然后再点击cell进入详情，发现需要卡顿一段时间才能进入详情，我添加任务做的操作是创建textView，让他成为第一相应，然后创建取消和添加俩个按钮，然后改变父视图的约束，以及隐藏添加任务的按钮，然后设置tableview的内边距以及设置让导航栏隐藏，
这个问题和https://segmentfault.com/q/10...里面的问题相似
问题在于数据少的时候不存在卡顿问题，但是数据多的话整个界面就会被卡死

望大神不吝赐教，由是感激**

具体代码如下

[addCard setTitle:@"添加任务" forState:UIControlStateNormal];
        [addCard setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        [addCard setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
        addCard.titleLabel.font = [UIFont systemFontOfSize:15];
        addCard.backgroundColor = [UIColor clearColor];
        self.addCards = addCard;
        // [addCard addTarget:self action:@selector(addCard:) forControlEvents:UIControlEventTouchUpInside];
        //使用ReactiveCocoa处理点击事件，相当于上面的addTarget:方法
        //addCard点击事件
        [[addCard rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
            NSLog(@"%ld",(unsigned long)self.unNetArr.count);
            
            self.yesOrNo = NO;
            //隐藏addCard
            addCard.alpha = 0;
            //输入框
            UITextView *textView = ({
                UITextView *view = [UITextView new];
                [footer addSubview:view];
                [view makeConstraints:^(MASConstraintMaker *make) {
                    make.left.equalTo(10);
                    make.top.equalTo(3);
                    make.right.equalTo(-10);
                    make.bottom.equalTo(-44+2);
                }];
                //因为footer变大，所以改变tableView的contentInset
                listTableView.contentInset = UIEdgeInsetsMake(46, 0, 88, 0);
                
                view.font = [UIFont systemFontOfSize:15];
                
                //立即刷新视图
                [self layoutIfNeeded];
                
                view;
            });
            self.textView = textView;
            
            //初始化add按钮
            UIButton *add = ({
                UIButton *view = [UIButton new];
                view.contentHorizontalAlignment=UIControlContentHorizontalAlignmentCenter;
                [view setTitle:NSLocalizedString(@"add", nil) forState:UIControlStateNormal];
                [view setTitleColor:Global_trelloBlue forState:UIControlStateNormal];
                [view setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
                [view setTitleEdgeInsets:UIEdgeInsetsMake(0, -40, 0, -80)];
                [view.titleLabel setFont:[UIFont fontWithName:@"Arial-Bold" size:18]];
                view.titleLabel.font = [UIFont systemFontOfSize:15];
                [footer addSubview:view];
                [view makeConstraints:^(MASConstraintMaker *make) {
                    make.right.equalTo(0);
                    make.bottom.equalTo(-1);
                    make.width.equalTo(120);
                }];
                
                [view sizeToFit];
                //初始化后隐藏(为了动画效果)
                view.alpha = 0;
                //立即刷新
                [self layoutIfNeeded];
                
                //add点击事件，创建新的tast
                [[view rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
                    
                    //textView判空
                    if (![textView.text isEqualToString:@""]) {
                        self.yesOrNo = NO;
                        AddTaskApi *api = AddTaskApi.new;
                        //如果在没有task的列添加新的task，t_sort传0
                        api.t_sort = @(0);
                        //都上传0
                        api.t_taskContent = textView.text;
                        api.t_projectId = @(_project_id.integerValue);
                        //当前列的id
                        api.t_panel_id = @(listTableView.model.id.integerValue);
                        NSLog(@"<><>%@",_project_id);
                        //判断是否有网
                        [GLobalRealReachability reachabilityWithBlock:^(ReachabilityStatus status) {
                            switch (status)
                            {
                                case RealStatusNotReachable:
                                {
                                    NewTasklistModel *model = [[NewTasklistModel alloc]init];
                                    model.unloading = YES;
                                    model.t_taskContent = textView.text;
                                    textView.text = nil;
                                    model.t_sort = @"0";
                                    model.t_id = [_project_id integerValue];
                                    model.t_panel_id = listTableView.model.id;
                                    model.page = idx;
                                    
                                    [listTableView.model.task addObject:model];
                                    [self.unNetArr addObject:model];
                                    NSLog(@"%ld",(unsigned long)self.unNetArr.count);
                                    //插入行
                                    [listTableView insertRow:(listTableView.model.task.count-1)inSection:0 withRowAnimation:
                                     UITableViewRowAnimationBottom];
                                    
                                    //计算rowHeight
                                    CGFloat rowHeight = [self tableView:listTableView heightForRowAtIndexPath:[NSIndexPath indexPathForRow:listTableView.model.task.count-1 inSection:0]];
                                    //根据当前列高度和rowHeight决定列高度是否增加
                                    //updateConstraints:方法更新autolayout
                                    [listView updateConstraints:^(MASConstraintMaker *make) {
                                        //增加新的rowHeight后list超出允许最大高度，之前不满最大高度
                                        if (listTableView.cellTotalHeight > (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44) && (listTableView.cellTotalHeight-rowHeight) < (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)) {
                                            make.height.equalTo(listView.yyHeight+((kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)-(listTableView.cellTotalHeight-rowHeight)));
                                        }
                                        //增加新的rowHeight后list没有超过允许最大高度
                                        if (listTableView.cellTotalHeight <= (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)) {
                                            make.height.equalTo(listView.yyHeight+rowHeight);
                                        }
                                    }];
                                    //tableView滚动到最底部，显示新添加行
                                    [listTableView scrollToRow:listTableView.model.task.count-1 inSection:0 atScrollPosition:UITableViewScrollPositionBottom animated:NO];
                                    //autolayout动画
                                    [self layoutIfNeeded];
                                    //                                               [listTableView reloadRow:listTableView.model.task.count-1 inSection:0 withRowAnimation:UITableViewRowAnimationBottom];
                                    
                                    
                                    //改变原列的标题数量
                                    UITextField *sourceListTableHeaderTF=(UITextField *)[self viewWithTag:[listTableView.model.id integerValue]];
                                    sourceListTableHeaderTF.text=[NSString stringWithFormat:@"%@ %ld",listTableView.model.name,(unsigned long)listTableView.model.task.count];
                                    break;
                                }
                                case RealStatusUnknown:
                                {
                                    NewTasklistModel *model = [[NewTasklistModel alloc]init];
                                    model.unloading = YES;
                                    model.t_taskContent = textView.text;
                                    textView.text = nil;
                                    model.t_sort = @"0";
                                    model.t_id = [_project_id integerValue];
                                    model.t_panel_id = listTableView.model.id;
                                    model.page = idx;
                                    
                                    [listTableView.model.task addObject:model];
                                    [self.unNetArr addObject:model];
                                    
                                    //插入行
                                    [listTableView insertRow:(listTableView.model.task.count-1)inSection:0 withRowAnimation:
                                     UITableViewRowAnimationBottom];
                                    
                                    //计算rowHeight
                                    CGFloat rowHeight = [self tableView:listTableView heightForRowAtIndexPath:[NSIndexPath indexPathForRow:listTableView.model.task.count-1 inSection:0]];
                                    //根据当前列高度和rowHeight决定列高度是否增加
                                    //updateConstraints:方法更新autolayout
                                    [listView updateConstraints:^(MASConstraintMaker *make) {
                                        //增加新的rowHeight后list超出允许最大高度，之前不满最大高度
                                        if (listTableView.cellTotalHeight > (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44) && (listTableView.cellTotalHeight-rowHeight) < (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)) {
                                            make.height.equalTo(listView.yyHeight+((kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)-(listTableView.cellTotalHeight-rowHeight)));
                                        }
                                        //增加新的rowHeight后list没有超过允许最大高度
                                        if (listTableView.cellTotalHeight <= (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)) {
                                            make.height.equalTo(listView.yyHeight+rowHeight);
                                        }
                                    }];
                                    //tableView滚动到最底部，显示新添加行
                                    [listTableView scrollToRow:listTableView.model.task.count-1 inSection:0 atScrollPosition:UITableViewScrollPositionBottom animated:NO];
                                    //autolayout动画
                                    [self layoutIfNeeded];
                                    
                                    
                                    
                                    //改变原列的标题数量
                                    UITextField *sourceListTableHeaderTF=(UITextField *)[self viewWithTag:[listTableView.model.id integerValue]];
                                    sourceListTableHeaderTF.text=[NSString stringWithFormat:@"%@ %ld",listTableView.model.name,(unsigned long)listTableView.model.task.count];
                                    break;
                                }
                                    
                                    
                                default:
                                    //发起请求
                                    [api startWithCompletionBlockWithSuccess:^(YTKBaseRequest *request) {
                                        SLog(@"<><>>>%@",request);
                                        NewTasklistModel *model = request.responseModel;
                                        model.unloading = NO;
                                        
                                        //存在即失败（接口定义，只在失败时才返回status值）
                                        if (model.status) {
                                            
                                        }
                                        else { //添加成功
                                            textView.text = nil;
                                            //更新数据源
                                            [listTableView.model.task addObject:model];
                                            //插入行
                                            [listTableView insertRow:(listTableView.model.task.count-1)inSection:0 withRowAnimation:
                                             UITableViewRowAnimationBottom];
                                            //计算rowHeight
                                            CGFloat rowHeight = [self tableView:listTableView heightForRowAtIndexPath:[NSIndexPath indexPathForRow:listTableView.model.task.count-1 inSection:0]];
                                            
                                            
                                            //根据当前列高度和rowHeight决定列高度是否增加
                                            //updateConstraints:方法更新autolayout
                                            
                                            [listView updateConstraints:^(MASConstraintMaker *make) {
                                                //增加新的rowHeight后list超出允许最大高度，之前不满最大高度
                                                if (listTableView.cellTotalHeight > (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44) && (listTableView.cellTotalHeight-rowHeight) < (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)) {
                                                    make.height.equalTo(listView.yyHeight+((kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)-(listTableView.cellTotalHeight-rowHeight)));
                                                }
                                                
                                                //增加新的rowHeight后list没有超过允许最大高度
                                                if (listTableView.cellTotalHeight <= (kTotalCellMaxHeight+NavAndStatusBarHeight-_keyboardHeight-44)) {
                                                    make.height.equalTo(listView.yyHeight+rowHeight);
                                                }
                                            }];
                                            //tableView滚动到最底部，显示新添加行
                                            [listTableView scrollToRow:listTableView.model.task.count-1 inSection:0 atScrollPosition:UITableViewScrollPositionBottom animated:NO];
                                            [self layoutIfNeeded];
                                            //autolayout动画
                                            
                                            
                                            //改变原列的标题数量
                                            UITextField *sourceListTableHeaderTF=(UITextField *)[self viewWithTag:[listTableView.model.id integerValue]];
                                            sourceListTableHeaderTF.text=[NSString stringWithFormat:@"%@ %ld",listTableView.model.name,(unsigned long)listTableView.model.task.count];
                                            
                                        }
                                    } failure:^(YTKBaseRequest *request) {
                                        
                                    }];
                                    break;
                            }
                        }];
                        
                        
                        
                        
                        
                    }else{
                        self.yesOrNo = YES;
                        
                        [footer updateConstraints:^(MASConstraintMaker *make) {
                            make.height.equalTo(44);
                        }];
                        //list减去footer增加的高度(在这里做是为了动效)
                        [listView updateConstraints:^(MASConstraintMaker *make) {
                            make.height.equalTo(listView.yyHeight-44);
                        }];
                        //tableView的contentInset还原
                        listTableView.contentInset = UIEdgeInsetsMake(46, 0, 44, 0);
                        //隐藏textView
                        textView.alpha = 0;
                        
                        [UIView animateWithDuration:0.25 animations:^{
                            //cancel隐藏
                            view.alpha = 0;
                            
                            //add隐藏
                            self.cancel.alpha = 0;
                            //addCard显示
                            addCard.alpha = 1;
                            [self.viewController.navigationController setNavigationBarHidden:NO animated:YES];
                            [self layoutIfNeeded];
                        }];
                        [textView resignFirstResponder];
                        
                    }
                }];
                view;
            });
            self.addView = add;
            //初始化cancel按钮
            UIView *cancel = ({
                UIButton *view = [UIButton new];
                view.contentHorizontalAlignment=UIControlContentHorizontalAlignmentCenter;
                [view setTitle:NSLocalizedString(@"cancel", nil) forState:UIControlStateNormal];
                [view setTitleColor:Global_trelloBlue forState:UIControlStateNormal];
                [view.titleLabel setFont:[UIFont fontWithName:@"Arial-Bold" size:18]];
                [view setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
                [view setTitleEdgeInsets:UIEdgeInsetsMake(0, -80, 0, -40)];
                view.titleLabel.font = [UIFont systemFontOfSize:15];
                [footer addSubview:view];
                [view makeConstraints:^(MASConstraintMaker *make) {
                    make.left.equalTo(0);
                    make.bottom.equalTo(-1);
                    make.width.equalTo(120);
                }];
                [view sizeToFit];
                view.alpha = 0;
                [self layoutIfNeeded];
                //cancel点击事件
                @weakify(self, view, textView, footer, listView, add, addCard)
                [[view rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x)
                 {
                     @strongify(self, view, textView, footer, listView, add, addCard)
                     //footer高度还原
                     self.yesOrNo = YES;
                     [textView resignFirstResponder];
                     // list减去footer增加的高度(在这里做是为了动效)
                     [footer updateConstraints:^(MASConstraintMaker *make) {
                         make.height.equalTo(44);
                     }];
                     [listView updateConstraints:^(MASConstraintMaker *make) {
                         make.height.equalTo(listView.yyHeight);
                     }];
                     //  tableView的contentInset还原
                     listTableView.contentInset = UIEdgeInsetsMake(46, 0, 44, 0);
                     // 隐藏textView
                     textView.alpha = 0;
                     [UIView animateWithDuration:0.5 animations:^{
                         //cancel隐藏
                         view.alpha = 0;
                         //add隐藏
                         add.alpha = 0;
                         //addCard显示
                         addCard.alpha = 1;
                         [self.viewController.navigationController setNavigationBarHidden:NO animated:NO];
                         [self layoutIfNeeded];
                     }];
                 }];
                view;

Answer 1

Bagaimana anda membaca kod yang begitu panjang?
Jika ini adalah masalah, anda harus melihat di mana ia mengambil masa yang lama. Kemudian selesaikannya.
Secara peribadi, saya rasa jika tableView dimuat semula terlalu banyak, ia akan menjejaskan prestasi Anda boleh menyemak sama ada kaedah proksi tableView sedang dipanggil sepanjang masa?

Answer 2

。。。。。。

Answer 3

Cara kod ditulis sangat canggih sehingga saya tidak dapat memahaminya...

Answer 4

Masalah akhirnya selesai, terima kasih

Answer 5

Pengaturcaraan reaktif?