UITableview 优化

目的就是简化代码：

将基本设置封装起来，将需要自定义的方案用代理到外部实现：

类DYTableDelegate,如下：

.h

////  DYTableDelegate.h//  DYTableDelegate////  Created by bqYang on 2017/8/22.//  Copyright © 2017年 drinye. All rights reserved.//#import <Foundation/Foundation.h>#import <UIKit/UIKit.h>@interface DYTableDelegate : NSObject<UITableViewDataSource,UITableViewDelegate>{    void(^cellClick)(NSIndexPath* indexpath);    void(^cellConfig)(id cell,id item);    void(^cellEdit)(id cell,id item);    CGFloat(^cellHieght)(id cell,id item);    UITableView* tabview;    NSString* cellIdentifierName;    BOOL isMultiSection;    BOOL isCellEdit;    Class cellClass;    CGFloat mCellHeight;    }@property(nonatomic,strong) id dataArr;-(id)initWithTableView: (UITableView*)tableview             cellClass:(Class)rowClass       cellIndentifier:(NSString*)cellIdentifier                useXib:(BOOL)useXib                height:(CGFloat)rowHeight                  data:(id)data          multiSection:(BOOL)isMulti             canScroll:(BOOL)isScroll                isEdit:(BOOL)isEdit                 click:(void(^)(NSIndexPath* indexpath))rowClick                config:(void(^)(id cell,id item))rowConfig                  edit:(void(^)(id cell,id item))rowEdit                  height:(CGFloat(^)(id cell,id item))rowHeight;@end

.m:

////  DYTableDelegate.m//  DYTableDelegate////  Created by bqYang on 2017/8/22.//  Copyright © 2017年 drinye. All rights reserved.//#import "DYTableDelegate.h"@implementation DYTableDelegate@synthesize dataArr;-(id)initWithTableView:(UITableView *)tableview cellClass:(Class)rowClass cellIndentifier:(NSString *)cellIdentifier useXib:(BOOL)useXib height:(CGFloat)mrowHeight data:(id)data multiSection:(BOOL)isMulti             canScroll:(BOOL)isScroll isEdit:(BOOL)isEdit click:(void (^)(NSIndexPath *))rowClick config:(void (^)(id, id))rowConfig edit:(void (^)(id, id))rowEdit height:(CGFloat(^)(id cell,id item))rowHeight{            if(self = [super init]){                tabview= tableview;        tabview.delegate = self;        tabview.dataSource = self;        [tableview setSeparatorStyle:UITableViewCellSeparatorStyleNone];        [tableview setScrollEnabled:isScroll];        [tableview setShowsVerticalScrollIndicator:NO];        cellIdentifierName = cellIdentifier;                if(rowClass){            cellClass = rowClass;        }else{            return NULL;        }        [tabview registerClass:cellClass forCellReuseIdentifier:cellIdentifierName];                if(rowConfig)            cellConfig = rowConfig;                        if(rowClick)            cellClick = rowClick;                if(rowEdit)            cellEdit = rowEdit;        if(rowHeight)            cellHieght = rowHeight;        if(data){            dataArr = data;        }                isMultiSection = isMulti;        mCellHeight = mrowHeight;        isCellEdit = isEdit;        if(useXib){            [tabview registerNib:[UINib nibWithNibName:cellIdentifierName bundle:nil] forCellReuseIdentifier:cellIdentifierName];        }            }        return self;}-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    NSInteger num=1;    if(isMultiSection){        num = [dataArr count];    }    return num;}-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    CGFloat height = mCellHeight;//    if(!(cellClass == [UITableViewCell class])){//        height+=50;//change your code//    }    if(mCellHeight==0){        UITableViewCell *cell = [[cellClass alloc]init];        id item = NULL;        if(isMultiSection)            item = dataArr[indexPath.section][indexPath.row];        else            item=dataArr[indexPath.row];//        height = cellHeight(cell,item);    }    return height;}-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    NSInteger num = 1;    if(isMultiSection){        num = [dataArr[section] count];    }else{        num = [dataArr count];    }    return num;}-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifierName];            if(cell == nil){        cell = [[cellClass alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifierName];    }        [cell setSelectionStyle:UITableViewCellSelectionStyleNone];        id item = NULL;    if(isMultiSection)        item = dataArr[indexPath.section][indexPath.row];    else        item=dataArr[indexPath.row];    cellConfig(cell,item);            return cell;}-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    [tableView deselectRowAtIndexPath:indexPath animated:NO];    cellClick(indexPath);}- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {    return isCellEdit;}- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{    id item = NULL;    if(isMultiSection)        item = dataArr[indexPath.section][indexPath.row];    else        item=dataArr[indexPath.row];    cellEdit(indexPath,item);}-(void)setDataArr:(id)dtArr{    dataArr =dtArr;    [tabview reloadData];}@end

在viewcontroller中使用：

#import "ViewController.h"#import "DYTableDelegate.h"@interface ViewController ()@property (strong,nonatomic) UITableView* tableview;@property (strong,nonatomic)  DYTableDelegate* delegate;@end@implementation ViewController@synthesize tableview,delegate;-(void)viewWillAppear:(BOOL)animated{    }- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        NSArray *arr1 = @[@"行-111",@"行-222",@"行-333"];    tableview= [[UITableView alloc]initWithFrame:CGRectMake(0, 0, 300, 400) style:UITableViewStyleGrouped];    [self.view addSubview:tableview];    delegate = [[DYTableDelegate alloc]initWithTableView:tableview cellClass:NULL cellIndentifier:@"cellTest" useXib:NO height:80 data:arr1 multiSection:NO                                               canScroll:(BOOL)NO isEdit:YES                                                   click:^(NSIndexPath *indexpath){        NSLog(@"click %ld row",indexpath.row);    } config:^(id cell, id item) {        UITableViewCell* mycell =cell;        NSString* str = item;        [mycell.textLabel setText:str];    } edit:^(id cell,id item){            } height:^CGFloat(id cell, id item) {        return 40;    }];    }@end