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前言

视图的组成部分为：

标题
编辑区域
字符限制：iOS文本长度计算规则：中文占1，英文等能转ascii的占0.5

实现思路：自定义cell

应用场景：用于备注信息编辑/街道地区信息的填写。

I 用法

// 编辑详细地区视图模型

// 编辑详细地区视图模型
    
    self.viewModel.delivery.tvModel =  [QCTTextViewModel new];

    //        //
    self.viewModel.delivery.tvModel.Labtitle = QCTLocal(@"ERP_Detailed_area");
    
    self.viewModel.delivery.tvModel.wordMaxCount = 200;
    self.viewModel.delivery.tvModel.titlePlaceholder = QCTLocal(@"ERP_Street_no");
    
    
//
//
    self.viewModel.delivery.tvModel.placeholderLabfont =  kTextFont(14);
    self.viewModel.delivery.tvModel.placeholderLabtextColor =  rgb(198,198,200);
//

创建一个分组

    /**
     详细地区
     */
    ERPChageAddreeVCViewSectionType4Reason,

分组个数1

        case ERPChageAddreeVCViewSectionType4Reason:{
            
            return 1;
            
            
            
        }
            break;

创建 cell

            case ERPChageAddreeVCViewSectionType4Reason:
            {
                ERPQCTMarkAddress200TableViewCell *cell = [ERPQCTMarkAddress200TableViewCell tableViewCellWithTableView:tableView block:^(id  _Nonnull sender) {
                    
                    
                    
                } models:self.viewModel.delivery];
                
                
                return cell;
                
            }
                break;

II 实现

思路：自定义cell

2.1 cell实现

头文件

#import <UIKit/UIKit.h>
#import "ERPQCTMarkAddress200TableViewCellView.h"


NS_ASSUME_NONNULL_BEGIN

@interface ERPQCTMarkAddress200TableViewCell : UITableViewCell


@property (nonatomic, strong) id models;
@property (nonatomic, copy) void (^block)(id sender);
+ (instancetype) tableViewCellWithTableView:(UITableView *) tableView   block:(void (^)(id sender))block  models:(id) models ;
+ (instancetype) tableViewCellWithTableView:(UITableView *) tableView;

@property (nonatomic,weak) ERPQCTMarkAddress200TableViewCellView *cellView;

实现文件


#import "ERPQCTMarkAddress200TableViewCell.h"

@implementation ERPQCTMarkAddress200TableViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        
        self.selectionStyle = UITableViewCellSelectionStyleNone;//去掉选中效果
        
        
        [self selfInit];
        [self createSubView];
        [self bindViewModel];
        
        
    }
    return self;
}

- (void)bindViewModel {
}

- (void)selfInit{
    
    self.contentView.backgroundColor = kcellColor;
    
}

- (void)createSubView {
    [self cellView];
}


static NSString *identifier = @"ERPQCTMarkAddress200TableViewCell";//QCTCheckOutViewcellSection4topTableViewCell
+ (instancetype) tableViewCellWithTableView:(UITableView *) tableView{
    
    ERPQCTMarkAddress200TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
    if (cell == nil) {// ------并不会执行
        
        cell = [[ERPQCTMarkAddress200TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
        
    }
    return cell;
}

+ (instancetype) tableViewCellWithTableView:(UITableView *) tableView   block:(void (^)(id sender))block  models:(id) models {
    ERPQCTMarkAddress200TableViewCell *cell  = [self  tableViewCellWithTableView:tableView];
    
    if (block) {
        cell.block = block;
    }
    cell.models = models;
    return cell;
    
}

#pragma mark - ******** model

- (void)setModels:( id)models{
    _models =models;
    
        self.cellView.models = models;
}


- (ERPQCTMarkAddress200TableViewCellView *)cellView{
    if (nil == _cellView) {
        ERPQCTMarkAddress200TableViewCellView *tmpView = [[ERPQCTMarkAddress200TableViewCellView alloc]init];
        _cellView = tmpView;
        
        [tmpView setBackgroundColor:kcellColor];
        
        [self.contentView addSubview:_cellView];
        
        __weak __typeof__(self) weakSelf = self;
        [_cellView mas_makeConstraints:^(MASConstraintMaker *make) {
            
            make.left.equalTo(weakSelf.contentView).offset(kAdjustRatio(25));
            make.right.equalTo(weakSelf.contentView).offset(- kAdjustRatio(25));
            make.top.equalTo(weakSelf.contentView).offset(kAdjustRatio(0));
            
            make.bottom.equalTo(weakSelf.contentView).offset(kAdjustRatio(0));
            
            
        }];
        
        [_cellView setBlock:^(id  _Nonnull sender) {
           
            if(weakSelf.block){
                weakSelf.block(sender);
            }
        }];
    }
    return _cellView;
}


@end

2.2 cellV的实现

ERPQCTMarkAddress200TableViewCellView.h


#import <UIKit/UIKit.h>
#import "QCTERPOrderDeliveryDto.h"
NS_ASSUME_NONNULL_BEGIN

@interface ERPQCTMarkAddress200TableViewCellView : UIView

@property (nonatomic, strong) QCTERPOrderDeliveryDto* models;

@property (nonatomic, copy) void (^block)(id sender);
//view

@property (nonatomic,weak) UILabel *titleLab;
@property (nonatomic,weak) QCTContentView *contentView;

@property (strong, nonatomic) QCTTextViewModel *tvModel;


@end

NS_ASSUME_NONNULL_END

实现

//
//  ERPQCTMarkAddress200TableViewCellView.m
//  retail
//
//  Created by mac on 2020/2/20.
//  Copyright © 2020 QCT. All rights reserved.
//

#import "ERPQCTMarkAddress200TableViewCellView.h"

@implementation ERPQCTMarkAddress200TableViewCellView

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/


- (QCTTextViewModel *)tvModel{
    if (nil == _tvModel) {
        QCTTextViewModel *tmpView = [[QCTTextViewModel alloc]init];
        _tvModel = tmpView;
        
        
    }
    return _tvModel;
}

//- (QCTERPOrderDeliveryDto *)delivery{

- (void)setModels:(QCTERPOrderDeliveryDto *)models{
    _models = models;
    
    if(![NSStringQCTtoll isBlankString:models.address] ){
        
        self.tvModel.content = models.address;
        
        if(models.tvModel){
            
            models.tvModel.content = models.address;

        }
        
        
        
    }
    
    if(models.tvModel){
        
//        models.tvModel.content = models.address;
        
        self.tvModel = models.tvModel;

        
        if(![NSStringQCTtoll isBlankString: models.tvModel.Labtitle]){
            
            
            _titleLab.text = models.tvModel.Labtitle;
            
            
//            QCTLocal(@"ERP_Detailed_area");

        }

        
    }

    
    //"ERP_Detailed_area"="详细地区";

    
    

    
    
    [self.contentView updateModel:self.tvModel];

    
}

- (instancetype)init
{
    self = [super init];
    if (self) {
        [self titleLab];
        [self contentView];
        
        
        // 默认设置
        self.tvModel.wordMaxCount = 200;
        self.tvModel.titlePlaceholder = QCTLocal(@"store_return_goods_choose_to_fill_in_limited_200_words");
        
        
        
        
        self.tvModel.placeholderLabfont =  kTextFont(14);
        self.tvModel.placeholderLabtextColor = rgb(204,204,204);
        
        [self.contentView updateModel:self.tvModel];

        

    }
    return self;
}

- (UILabel *)titleLab{
    if (!_titleLab) {
        UILabel *tmp = [[UILabel alloc]init];
        _titleLab = tmp;
        _titleLab.font = kPingFangFont(15);
        _titleLab.textAlignment = NSTextAlignmentLeft;
        
        //"ERP_Detailed_area"="详细地区";

        _titleLab.text = QCTLocal(@"store_return_goods_remarks");
        
        _titleLab.textColor = rgb(51,51,51);
        [self addSubview:_titleLab];
        
        __weak __typeof__(self) weakSelf = self;
        
        [_titleLab mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.equalTo(weakSelf).offset(kAdjustRatio(0));//18
            make.top.equalTo(weakSelf).offset(kAdjustRatio(10));
            
            
            
            
        }];
        
        
        
    }
    return _titleLab;
}



- (UIView*)contentView{
    if (!_contentView) {
        QCTContentView *tmp = [QCTContentView new];
        
        _contentView = tmp;
        
        [self addSubview:_contentView];
        
        __weak __typeof__(self) weakSelf = self;
        
        [_contentView mas_makeConstraints:^(MASConstraintMaker *make) {
            
            
            make.top.equalTo(weakSelf.titleLab.mas_bottom).offset(kAdjustRatio(0));
            
            make.left.bottom.right.equalTo(weakSelf);
            make.height.mas_equalTo(kAdjustRatio(150));
            
            
            
            
        }];
        
        _contentView.block = ^(id  _Nonnull sender) {
            
            
            NSLog(@"详细地址：%@",sender);
            
            if(weakSelf.block){
                weakSelf.block(sender);
                
            }
            //QCTeditReturnedItemTableViewCellModel
            weakSelf.models.address = sender;
            
        };
        
    }
    return _contentView;
}



@end

III 处理UITextView的占位符

监听文本的变化

- (void)textViewDidChange:(UITextView *)textView{
    
    
        if (textView.text.length == 0) {
            
            self.placeholderLab.hidden = NO;
            
        }else{
            
            self.placeholderLab.hidden = YES;
            
        }

    
    
}

监听删除键

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{
    

    if (![text isEqualToString:@""]){
        
        _placeholderLab.hidden = YES;
        
    }
   else  if (([text isEqualToString:@""] && range.location == 0 && range.length == 1) || ([text isEqualToString:@"\n"] && [text isEqualToString:@""] && range.location == 0 && range.length == 1)){
       
        _placeholderLab.hidden = NO;
    }
   else  if ([text isEqualToString:@"\n"]){
        
        
        [textView endEditing:YES];
        
        return NO;
    }
    
    
    
        return YES;

    
    
}

iOS小技能：封装textView 为一个cell，用于备注信息编辑/街道地区信息的填写。

前言

I 用法

II 实现

2.1 cell实现

2.2 cellV的实现

III 处理UITextView的占位符

see also

iOS小技能： 封装textView 为一个cell，用于备注信息编辑/街道地区信息的填写。

前言

I 用法

II 实现

2.1 cell实现

2.2 cellV的实现

III 处理UITextView的占位符

see also

iOS小技能：封装textView 为一个cell，用于备注信息编辑/街道地区信息的填写。