IOS学习 UITableView 单元格风格和修改单元格背景

@implementation HomeViewController

- (void)viewDidLoad {

[super
viewDidLoad];

// Do any additional setup after loading the view.

self.title =
@"UITabelViewCell";

_listArray =
@[@"单元格样式",@"定制单元格背景"];

_tableView = [[UITableView
alloc]initWithFrame:self.view.bounds
style:UITableViewStylePlain];

[self.view
addSubview:_tableView];

//设置数据源

_tableView.dataSource =
self;

//设置委托

_tableView.delegate =
self;

}

- (void)viewWillAppear:(BOOL)animated{

[super viewWillAppear:animated];

//获得当前表视图选中的单元格

NSIndexPath *indexPath = [_tableView
indexPathForSelectedRow];

//取消当前表视图的选中状态

[_tableView
deselectRowAtIndexPath:indexPath animated:YES];

}

#pragma mark - UITableView DataSource

//表视图中存在section的个数，默认为1

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

return 1;

}

//section中包含row的数量

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

return
_listArray.count;

}

//创建单元格

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *cellIndentifier =
@"cell";

UITableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:cellIndentifier];

if (cell == nil) {

cell = [[UITableViewCell
alloc]initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:cellIndentifier];

}

cell.textLabel.text =
_listArray[indexPath.row];

return cell;

}

#pragma mark - UITableView delegate

//当用户选择某一行时

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

DetaiViewController *detaiVC = [[DetaiViewController
alloc]init];

//获取选择的内容

detaiVC.isBaseCell = indexPath.row ?
NO : YES ;

[self.navigationController
pushViewController:detaiVC animated:YES];

}

#import <UIKit/UIKit.h>

#import "HomeViewController.h"

@interface DetaiViewController :
UIViewController<UITableViewDelegate,UITableViewDataSource>{

NSArray *array;

NSMutableArray *tempArray;

NSMutableArray *fontArray;

UITableViewStyle style;

UITableViewCell *cell;

}

@property (nonatomic,assign)
BOOL isBaseCell;

@end

@implementation DetaiViewController

- (void)viewDidLoad {

[super
viewDidLoad];

// Do any additional setup after loading the view.

array = [UIFont
familyNames];

if (!self.isBaseCell)

{

self.title =
@"Modify Cell BG Type";

style =
UITableViewStyleGrouped;

fontArray = [[NSMutableArray
alloc]init];

for (int i =
0; i<array.count; i++)

{

//取出字体

NSString *font =
array[i];

//将5整除的时候，创建tempArray数据，添加至fontArray中

if (i %5 ==
0) {

tempArray = [[NSMutableArray
alloc]init];

[fontArray
addObject:tempArray];

}

[tempArray
addObject:font];

}

}else

{

self.title =
@"Cell Base Type";

style =
UITableViewStylePlain;

}

UITableView *detaiTV = [[UITableView
alloc]initWithFrame:self.view.bounds
style:style];

[self.view
addSubview:detaiTV];

detaiTV.delegate =
self;

detaiTV.dataSource =
self;

}

#pragma mark - UITableView DataSource

//表视图中存在section的个数，默认为1

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

if (_isBaseCell) {

return 1;
//选中第一行时

}else{

return fontArray.count;}

}

//section中包含row的数量

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

if (_isBaseCell) {

return 4;

}else{

return [fontArray[section]
count];}

}

//创建单元格

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

if (_isBaseCell) {

//只有一页，无需重用

cell = [[UITableViewCell
alloc]initWithStyle:indexPath.row
reuseIdentifier:nil];

/*
单元格风格 Style : indexPath.row

* 0 UITableViewCellStyleDefault

* 1 UITableViewCellStyleValue1

* 2 UITableViewCellStyleValue2

* 3 UITableViewCellStyleSubtitle */

switch (indexPath.row) {

case 0:

cell.textLabel.text =
@"这是一个默认的风格";

cell.detailTextLabel.text =
@"这是副标题";//不显示

cell.imageView.image = [UIImage
imageNamed:@"photo"];

cell.accessoryType =
UITableViewCellAccessoryDisclosureIndicator;
//箭头

break;

case 1:

cell.textLabel.text =
@"这是一个Value1的风格";

cell.detailTextLabel.text =
@"这是副标题";

cell.imageView.image = [UIImage
imageNamed:@"photo"];

cell.accessoryType =
UITableViewCellAccessoryCheckmark; //打勾

break;

case 2:

cell.textLabel.text =
@"这是一个Value2的风格";

cell.detailTextLabel.text =
@"这是副标题";

cell.imageView.image = [UIImage
imageNamed:@"photo"];
//不显示

cell.accessoryType =
UITableViewCellAccessoryDetailDisclosureButton;
//按钮+箭头

break;

case 3:

cell.textLabel.text =
@"这是一个subTitle的风格";
//副标题在下方

cell.detailTextLabel.text =
@"这是副标题";

cell.imageView.image = [UIImage
imageNamed:@"photo"];

cell.accessoryType =
UITableViewCellAccessoryDetailButton;//按钮

break;

default:

break;

}

}else

{

static NSString *cellIndentifier =
@"cell";

cell = [tableView
dequeueReusableCellWithIdentifier:cellIndentifier];

if (cell ==
nil)

{

cell = [[UITableViewCell
alloc]initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:cellIndentifier];

}

cell.textLabel.text = [[fontArray
objectAtIndex:indexPath.section]
objectAtIndex:indexPath.row];

//设置选中背景的风格

// cell.selectionStyle = UITableViewCellSelectionStyleBlue;

//设置背景图片

UIImageView *imageView = [[UIImageView
alloc]init];

imageView.image = [UIImage
imageNamed:@"bg_balance"];

cell.backgroundView = imageView;

UIImageView *selectionView = [[UIImageView
alloc]init];

selectionView.backgroundColor = [UIColor
yellowColor];

cell.selectedBackgroundView = selectionView;

}

return
cell;

}

//设置section头部视图的title
此方法与自定义的头部视图不能并存

- (nullable NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{

if (_isBaseCell) {

return nil;

}else{

NSString *title = [NSString
stringWithFormat:@"第%ld个section",(long)section+1];

return title;}

}

#pragma mark - UITableView Delegate

//设置section头部的高度

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{

if (_isBaseCell) {

return 0;

}return 25;

}