iOS UITableView
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时间：2015年06月11日
1 .h文件 2 #import <UIKit/UIKit.h> 3 4 @interface EXTVV2ViewController : UIViewController<UITableViewDelegate,UITableViewDataSource> 5 6 @end 7 // 8 // EXTVV2ViewController.m 9 // ExerciseTableViewV2 10 // 11 // Created by hxl on 13-5-20. 12 // Copyright (c) 2013年 xiaolei.hu. All rights reserved. 13 // 14 .m文件 15 /* 16 UITableView 17 Tasks 18 19 //初始化UITableView对象 20 Initializing a UITableView Object 21 22 – initWithFrame:style: 23 - (id)initWithFrame:(CGRect)frame style:(UITableViewStyle)style 24 25 26 //配置UITableView 27 Configuring a Table View 28 29 //tableView的style 30 //UITableViewStylePlain或者UITableViewStyleGrouped，2者选1 31 style property 32 @property(nonatomic, readonly) UITableViewStyle style 33 34 //当前section有多少行（此方法必须实现） 35 – numberOfRowsInSection: 36 - (NSInteger)numberOfRowsInSection:(NSInteger)section 37 //当前section的标示 38 39 40 //当前tableView里有多少section，默认为1 41 – numberOfSections 42 - (NSInteger)numberOfSections 43 44 45 //行高 46 rowHeight property 47 48 49 separatorStyle property 50 separatorColor property 51 //tableview的背景 52 backgroundView property 53 54 55 56 //创建cell 57 Creating Table View Cells 58 – registerNib:forCellReuseIdentifier: 59 – registerClass:forCellReuseIdentifier: 60 – dequeueReusableCellWithIdentifier:forIndexPath: 61 – dequeueReusableCellWithIdentifier: 62 63 64 65 66 Accessing Header and Footer Views 67 – registerNib:forHeaderFooterViewReuseIdentifier: 68 – registerClass:forHeaderFooterViewReuseIdentifier: 69 – dequeueReusableHeaderFooterViewWithIdentifier: 70 tableHeaderView property 71 tableFooterView property 72 sectionHeaderHeight property 73 sectionFooterHeight property 74 – headerViewForSection: 75 – footerViewForSection: 76 Accessing Cells and Sections 77 – cellForRowAtIndexPath: 78 – indexPathForCell: 79 – indexPathForRowAtPoint: 80 – indexPathsForRowsInRect: 81 – visibleCells 82 – indexPathsForVisibleRows 83 Scrolling the Table View 84 – scrollToRowAtIndexPath:atScrollPosition:animated: 85 – scrollToNearestSelectedRowAtScrollPosition:animated: 86 Managing Selections 87 – indexPathForSelectedRow 88 – indexPathsForSelectedRows 89 – selectRowAtIndexPath:animated:scrollPosition: 90 – deselectRowAtIndexPath:animated: 91 allowsSelection property 92 allowsMultipleSelection property 93 allowsSelectionDuringEditing property 94 allowsMultipleSelectionDuringEditing property 95 Inserting, Deleting, and Moving Rows and Sections 96 – beginUpdates 97 – endUpdates 98 – insertRowsAtIndexPaths:withRowAnimation: 99 – deleteRowsAtIndexPaths:withRowAnimation: 100 – moveRowAtIndexPath:toIndexPath: 101 – insertSections:withRowAnimation: 102 – deleteSections:withRowAnimation: 103 – moveSection:toSection: 104 Managing the Editing of Table Cells 105 editing property 106 – setEditing:animated: 107 Reloading the Table View 108 – reloadData 109 – reloadRowsAtIndexPaths:withRowAnimation: 110 – reloadSections:withRowAnimation: 111 – reloadSectionIndexTitles 112 Accessing Drawing Areas of the Table View 113 – rectForSection: 114 – rectForRowAtIndexPath: 115 – rectForFooterInSection: 116 – rectForHeaderInSection: 117 Managing the Delegate and the Data Source 118 dataSource property 119 delegate property 120 Configuring the Table Index 121 sectionIndexMinimumDisplayRowCount property 122 sectionIndexColor property 123 sectionIndexTrackingBackgroundColor property 124 125 */ 126 127 #import "EXTVV2ViewController.h" 128 129 @interface EXTVV2ViewController () 130 @property (nonatomic) NSMutableArray *listData; 131 @property (nonatomic) IBOutlet UITableView* myTableView;//在xib中与tableview控件关联 132 @property (nonatomic) IBOutlet UISwitch* mySwitch;//在xib中与switch控件关联 133 -(IBAction)switchEditModel:(UISwitch*)sender;//在xib中与switch控件的事件关联 134 @end 135 136 @implementation EXTVV2ViewController 137 @synthesize listData; 138 @synthesize myTableView; 139 @synthesize mySwitch; 140 141 - (void)viewDidLoad 142 { 143 [superviewDidLoad]; 144 145 // Do any additional setup after loading the view, typically from a nib. 146 [selfsetListData:[selfcreateData:26sectionRowLength:10stringLength:6]]; 147 } 148 149 - (void)didReceiveMemoryWarning 150 { 151 [superdidReceiveMemoryWarning]; 152 // Dispose of any resources that can be recreated. 153 } 154 155 //指定有多少个分区(Section)，默认为1 156 /* 157 1.此处根据二维数组外层的count获取section数量 158 此时已有count个section被创建 159 */ 160 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 161 return [self.listDatacount]; 162 } 163 164 165 //指定各个分区中有多少行，默认为1。 166 /* 167 2.此处根据1设置的section数量获取数组二维内层长度（row数量）ps：section会根据你设置的最大值自动递增 168 此时section对应的count个cell被创建 169 */ 170 - (NSInteger) tableView: (UITableView *) tableView 171 numberOfRowsInSection: (NSInteger) section { 172 NSInteger rowCount = 0; 173 //NSLog(@"section = %d",section);0/1/2 174 if (section < self.listData.count) { 175 rowCount = [self.listData[section]count]; 176 } 177 return rowCount; 178 } 179 180 //设置每行调用的cell 181 /* 182 3.此处根据1设置的section数量,和2设置的row数量获取数组内容并填充cell 183 对1、2创建的容器进行填充，section和row就是二维数组的下标 184 */ 185 - (UITableViewCell *) tableView: (UITableView *) tableView 186 cellForRowAtIndexPath: (NSIndexPath *) indexPath 187 { 188 /* 189 indexPath 索引路径 190 property： 191 row：table view 中 192 item：collection view中 193 section：table/collection view中 194 method 195 //collection view中 196 + (NSIndexPath *)indexPathForItem:(NSInteger)item inSection:(NSInteger)section 197 //table view 中 198 + (NSIndexPath *)indexPathForRow:(NSInteger)row inSection:(NSInteger)section 199 200 */ 201 202 //产生一个静态标示（每个cell形式相同可用） 203 //static NSString * TableSampleIdentifier = @ "TableSampleIdentifier"; 204 //每个cell形式不相同需要不同标示 205 NSString * TableSampleIdentifier = [[NSStringalloc]initWithFormat:@"CMainCell%d", indexPath.row]; 206 207 //通过标示符获取一个cell对象(dequeueReusableCellWithIdentifier=>系统请求的回调函数) 208 UITableViewCell * cell = [tableViewdequeueReusableCellWithIdentifier: 209 TableSampleIdentifier]; 210 //如果未获取到cell对象，创建新的cell对象，并赋予标示符 211 if (cell == nil) { 212 cell = [[UITableViewCellalloc] 213 initWithStyle:UITableViewCellStyleDefault 214 reuseIdentifier: TableSampleIdentifier]; 215 } 216 NSString* cellText = nil; 217 if (indexPath.section <self.listData.count) { 218 NSArray* rowArray = self.listData[indexPath.section]; 219 if ([indexPath row] < rowArray.count) { 220 cellText = rowArray[indexPath.row]; 221 } 222 } 223 cell.textLabel.text = cellText; 224 return cell; 225 } 226 227 //设置每个section显示的Title 228 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section 229 { 230 NSString* title = nil; 231 if (section < self.listData.count) { 232 NSArray* rowArray = self.listData[section]; 233 if (rowArray.count >0) { 234 //将每个section的第一行作为title是惯例 235 title = rowArray[0]; 236 } 237 } 238 //截取首字母 239 return [titlesubstringToIndex:1]; 240 } 241 242 //设置tableview每行的title(右侧索引) 243 - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{ 244 //initWithCapacity初始化数组时候指定长度 245 NSMutableArray* indexTitleArray = [[NSMutableArrayalloc]initWithCapacity:[self.listDatacount]]; 246 //循环外围数组（section个数） 247 for (UInt16 i =0; i < [self.listDatacount]; i++) { 248 NSArray* rowArray = self.listData[i]; 249 //判断section下的数据行是否大于0 250 if (rowArray.count >0) { 251 NSString* titleStr = rowArray[0]; 252 //title长度超过3截取字符串 253 if (titleStr.length >1) { 254 titleStr = [titleStr substringToIndex:1]; 255 } 256 [indexTitleArray addObject:titleStr]; 257 } 258 } 259 //arrayWithArray产生一个新数组并释放原来的数组 260 return [NSArrayarrayWithArray:indexTitleArray]; 261 } 262 263 //点击右侧索引时响应跳转到那个section的事件 264 - (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index 265 { 266 return index; 267 } 268 269 270 //设置选中Cell的响应事件 271 /* 272 -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 273 { 274 [tableView deselectRowAtIndexPath:indexPath animated:YES];//选中后的反显颜色即刻消失 275 } 276 */ 277 278 //选中之前执行 279 -(NSIndexPath*)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath 280 { 281 return indexPath; 282 } 283 284 //设置划动cell是否出现del按钮 285 -(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath 286 { 287 return YES; 288 } 289 290 //设置删除时编辑状态 291 -(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath 292 { 293 //删除元素的操作 294 if (editingStyle ==UITableViewCellEditingStyleDelete) 295 { 296 //删除数据 297 [self.listData[indexPath.section]removeObjectAtIndex:indexPath.row]; 298 //删除元素 299 [tableView deleteRowsAtIndexPaths:[NSMutableArrayarrayWithObjects:indexPath,nil]withRowAnimation:UITableViewRowAnimationTop]; 300 301 } 302 } 303 304 //选中cell后触发的事件 305 -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 306 { 307 308 //设置选中的样式，4种风格 UITableViewCellAccessoryCheckmark UITableViewCellAccessoryDetailDisclosureButton 309 //UITableViewCellAccessoryDisclosureIndicator UITableViewCellAccessoryNone 310 UITableViewCell *cellView = [tableView cellForRowAtIndexPath:indexPath]; 311 if (cellView.accessoryType ==UITableViewCellAccessoryNone) { 312 cellView.accessoryType=UITableViewCellAccessoryCheckmark; 313 } 314 else { 315 cellView.accessoryType =UITableViewCellAccessoryNone; 316 [tableView deselectRowAtIndexPath:indexPathanimated:YES]; 317 } 318 319 //弹出框 320 NSString *cellSelected=[self.listData[indexPath.section]objectAtIndex:indexPath.row]; 321 //indexPath.row得到选中的行号，提取出在数组中的内容。 322 UIAlertView *myAlertView; 323 myAlertView = [[UIAlertViewalloc]initWithTitle:@"你选中了：" message:cellSelected delegate:selfcancelButtonTitle:@"ok"otherButtonTitles:nil]; 324 //点击后弹出该对话框。 325 [myAlertView show]; 326 327 } 328 329 //是否能移动 330 - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { 331 return YES; 332 } 333 334 //移动操作 335 - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath 336 { 337 if (sourceIndexPath != destinationIndexPath) { 338 id object = [self.listData[sourceIndexPath.section]objectAtIndex:sourceIndexPath.row]; 339 [self.listData[sourceIndexPath.section]removeObjectAtIndex:sourceIndexPath.row]; 340 if (destinationIndexPath.row > [self.listData[destinationIndexPath.section]count]) { 341 [self.listData[destinationIndexPath.section]addObject:object]; 342 } 343 else { 344 [self.listData[destinationIndexPath.section]insertObject:objectatIndex:destinationIndexPath.row]; 345 } 346 } 347 } 348 349 //单元格返回的编辑风格，包括删除 添加和默认 和不可编辑三种风格 350 //-(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath 351 //{ 352 //return UITableViewCellEditingStyleDelete; 353 //return UITableViewCellEditingStyleNone; 354 //return UITableViewCellEditingStyleInsert; 355 //} 356 357 //switc按钮事件 358 -(IBAction)switchEditModel:(UISwitch*)sender 359 { 360 //self.view.subview所有子视图，包括tableview等 361 //是否开启编辑模式 362 if(sender.on) { 363 [self.myTableViewsetEditing:YESanimated:YES]; 364 } else { 365 [self.myTableViewsetEditing:NOanimated:YES]; 366 } 367 368 } 369 370 371 //生成随机字符串 372 - (NSString *) createRandString:(NSInteger)stringLength perStr:(UInt16)pstr{ 373 UInt16 seed = 0; 374 //97-122小写英语 375 NSMutableString *str = [[NSMutableStringalloc]initWithFormat:@"%c", pstr]; 376 for(UInt16 i = 0; i < stringLength; i++) { 377 seed = (arc4random() % 26) + 97; 378 [str appendFormat:@"%c", seed]; 379 } 380 return [NSStringstringWithString:str]; 381 } 382 383 - (NSMutableArray *) createData:(NSInteger)sectionLength sectionRowLength:(NSInteger)row stringLength:(NSInteger)length{ 384 NSMutableArray *sectionData = [[NSMutableArrayalloc]initWithCapacity:sectionLength]; 385 for (UInt16 i =0; i < sectionLength ; i++) { 386 NSMutableArray* rowData = [[NSMutableArrayalloc]initWithCapacity:row]; 387 for (UInt16 j =0; j < row; j++) { 388 [rowData addObject:[selfcreateRandString:lengthperStr:i +97]]; 389 } 390 [sectionData addObject:rowData]; 391 } 392 return sectionData; 393 } 394 @end
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