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UITableView的一些常用设置和代理方法

2015-04-22 09:49 211 查看
- (void)viewDidLoad {

[super viewDidLoad];

tableview = [[UITableView alloc]initWithFrame:CGRectMake(0, 0,self.view.bounds.size.width,self.view.bounds.size.height)style:UITableViewStyleGrouped];

// UITableViewStylePlain,

// UITableViewStyleGrouped

tableview.delegate =self;//不要忘写了这两句话哟调用delegate*/

tableview.dataSource=self;

/*改变 UITableViewStyleGrouped 样式的 背景色 */

tableview.backgroundView = [[UIView alloc]init];

tableview.backgroundColor = [UIColor clearColor];

[self.view addSubview:tableview];

NSMutableArray *arrayValue = [[NSMutableArray alloc]init];

NSMutableArray *arrayImageValue = [[NSMutableArray alloc]init];

NSMutableArray *arrayImageValue2 = [[NSMutableArray alloc]init];

for (int i = 1; i<= 5; i++)

{

NSString *value = [NSString stringWithFormat:@"%d",i];

NSString *imageName = [NSString stringWithFormat:@"image%@.png",value];

UIImage *image = [UIImage imageNamed:imageName];

// NSLog(@"imageName == %@",imageName);

[arrayValue addObject:value];

[arrayImageValue addObject:image];

}

for (int i = 6;i<=10; i++ )

{

NSString *value = [NSString stringWithFormat:@"%d",i];

NSString *imageName = [NSString stringWithFormat:@"image%@.png",value];

UIImage *image = [UIImage imageNamed:imageName];

[arrayImageValue2 addObject:image];

}

array1 = arrayValue;

arrayImage = arrayImageValue;

arrayImage1 =arrayImageValue2;

/*

//添加一个BarButton用来控制cell的移动

UIBarButtonItem *moveButton = [[UIBarButtonItem alloc]

initWithTitle:@"移动"

style:UIBarButtonItemStylePlain

target:self

action:@selector(toggleMove)];

self.navigationItem.rightBarButtonItem = moveButton;

//默认设置cell不可编辑

[tableview setEditing:tableview.editing=NO];

*/

}

/**

*explain:事件响应toggleMove

*/

//-(void)toggleMove

//{

// //设置cell编辑模式取反

// [tableview setEditing:!tableview.editing];

//

// //初始话时默认不可编辑 点击事件的时候取反 为真!可编辑

//

// if (self.tableview.editing)

// {

// [self.navigationItem.rightBarButtonItem setTitle:@"完成"];

// }else

// {

// [self.navigationItem.rightBarButtonItem setTitle:@"移动"];

// }

//

//}

/**

*explain:设置cell是否可以移动(滑动)

*/

//- (BOOL)tableView:(UITableView *)tableView

//canMoveRowAtIndexPath:(NSIndexPath *)indexPath

//{

// return YES; //可以移动

//}

///**

// *explain:设置cell的插入和删除位置

// */

//- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {

// NSUInteger fromRow = [fromIndexPath row]; //要移动的那个cell integer

// NSUInteger toRow = [toIndexPath row]; //要移动位置的那个clell integer

// //arrayValue 添加数据的那个可变数组

// id object = [_arrayValue objectAtIndex:fromRow]; // 获取数据

// [_arrayValue removeObjectAtIndex:fromRow]; //在当前位置删除

// [_arrayValue insertObject:object atIndex:toRow]; //插入的位置

//

//}

/**

*explain:设置编辑样式:editingStyle(三种)

typedef NS_ENUM(NSInteger, UITableViewCellEditingStyle) {

UITableViewCellEditingStyleNone, 只有移动

UITableViewCellEditingStyleDelete,滑动显示删除

UITableViewCellEditingStyleInsert,编辑模式和滑动

*/

-(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath

{

return UITableViewCellEditingStyleDelete; //滑动出现删除操作,出现的红色按钮(删除这个方法默认是这个模式)

}

/*改变删除按钮的title*/

-(NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath

{

return @"删除"; //默认返回“delete”,这里我们改为中文

}

/*删除cell用到的函数*/

-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath

{

if (editingStyle == UITableViewCellEditingStyleDelete)

{

[_arrayValue removeObjectAtIndex:[indexPath row]]; //删除数组里的数据

//删除对应数据的cell,[这里没有做更新数据的操作]

[tableview deleteRowsAtIndexPaths:[NSMutableArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

}

}

/* 这个函数是显示tableview的章节数*/

-(NSInteger)numberOfSectionsInTableView:(UITableView*)tableView

{

return 2;

}

/* 这个函数是指定显示多少cells*/

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

{

return [array1 count];//这个是指定加载数据的多少即显示多少个cell,如过这个地方弄错了会崩溃的哟

}

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

{

//定义个静态字符串为了防止与其他类的tableivew重复

static NSString *CellIdentifier =@"Cell";

//定义cell的复用性当处理大量数据时减少内存开销

UITableViewCell *cell = [tableview dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell ==nil)

{

// cell = [[UITableViewCell alloc]initWithStyle UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

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

cell.showsReorderControl =YES; //我们添加一个重新排序控件

if (indexPath.section == 0)

{

cell.imageView.image = [arrayImage objectAtIndex:[indexPath row]];

}

else

{

cell.imageView.image = [arrayImage1 objectAtIndex:[indexPath row]];

}

/*去掉方框 ,或者把view 换成imageview */

UIView *backView = [[UIView alloc]init];

[cell setBackgroundView:backView];

cell.backgroundColor = [UIColor clearColor];

cell.detailTextLabel.text = [array1 objectAtIndex:[indexPath row]];

cell.textLabel.text = [array1 objectAtIndex:[indexPath row]];

}

// 设置字体大小

cell.textLabel.font = [UIFont systemFontOfSize:15];

/* 问题三 如何改变字体的颜色?

解决方案:

设置字体颜色*/

cell.textLabel.textColor = [UIColor redColor];

/* 问题三 如何改变字体的靠左对齐还是右还是中?

解决方案:

设置字体对齐方式*/

cell.textLabel.textAlignment = NSTextAlignmentCenter;

//设置文字的label的坐标

cell.textLabel.frame = cell.frame;

//设置tag值

// cell.textLabel.tag =20;

/* //cell的样式1:右侧添加箭头,表示点击cell 可以pus 到下个viewcontrol

cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

*/

//cell的样式2:右侧添加箭头,和一个info按钮,系统自己定义的button

// 该样式会调用accessoryButtonTappedForRowWithIndexPath方法

cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;

/*

//cell的样式3:这个是选择数据时候 告诉我们选择了哪一行,会调用didSelectRowAtIndexPath方法

cell.accessoryType = UITableViewCellAccessoryCheckmark;

NSUInteger row = [indexPath row];

NSUInteger oldRow = [lastpath row];

//如何点击当前的cell 最右边就会出现一个对号 ,在点击其他的cell 对号显示当前,上一个小时

cell.accessoryType = (row==oldRow &&lastpath != nil)?UITableViewCellAccessoryCheckmark:UITableViewCellAccessoryNone;

*/

/*

//cell的样式4:自定义右侧的butten

mybutton = [UIButton buttonWithType:UIButtonTypeRoundedRect];

mybutton.frame = CGRectMake(0, 0, 100, 25);

[mybutton setTitle:@"myButton" forState:UIControlStateNormal];

[mybutton setBackgroundImage:[UIImage imageNamed:@"message"] forState:UIControlStateNormal];

[mybutton addTarget:self action:@selector(myBtnClick:event:) forControlEvents:UIControlEventTouchUpInside];

cell.accessoryView = mybutton;

*/

return cell;

}

/**

*explain:myBtnClick

*/

-(void)myBtnClick:(id)sender event:(id)event

{

NSSet *touches = [event allTouches]; // 把触摸的事件放到集合里

UITouch *touch = [touches anyObject]; //把事件放到触摸的对象了

CGPoint currentTouchPosition = [touch locationInView:self.tableview]; //把触发的这个点转成二位坐标

NSIndexPath *indexPath = [self.tableview indexPathForRowAtPoint:currentTouchPosition]; //匹配坐标点

if(indexPath !=nil)

{

[self tableView:self.tableview accessoryButtonTappedForRowWithIndexPath:indexPath];

}

}

/**

*explain:添加响应事件

*/

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

{

/* //这个表示点击选中的那个cell上的数据会弹出警告框

NSString *titileString = [array objectAtIndex:[indexPath row]];

//

UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示"message:titileString delegate:self cancelButtonTitle:@"OK"otherButtonTitles:nil];

[alert show];

*/

//点击选中的那个cell会给该行cell打勾

NSInteger newRow = [indexPath row];

NSInteger oldRow = (lastpath != nil) ? [lastpath row] : -1;

if (newRow != oldRow) {

UITableViewCell *newCell = [tableView cellForRowAtIndexPath:

indexPath];

newCell.accessoryType = UITableViewCellAccessoryCheckmark;

UITableViewCell *oldCell = [tableView cellForRowAtIndexPath:

lastpath];

oldCell.accessoryType = UITableViewCellAccessoryNone;

lastpath = indexPath;

}

// 取消选择(打勾)状态

[tableView deselectRowAtIndexPath:indexPath animated:YES];

}

/**

*explain:当cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;时调用

*/

-(void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath

{

NSString *titileString = [NSString stringWithFormat:@"你点击了按钮%@",[array1 objectAtIndex:[indexPath row]]];

UIAlertView *alert = [[ UIAlertView alloc]initWithTitle:@"提示" message:titileString delegate:self cancelButtonTitle:@"OK"otherButtonTitles: nil];

[alert show];

}

/*设置标题头的宽度*/

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

{

return 20;

}

/*设置标题尾的宽度*/

-(CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section

{

return 20;

}

/*设置标题头的名称*/

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

{

if (section == 0) {

return @"我是头一";

}

else{

UILabel *label2=[[UILabel alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];

label2.text=@"我是程序员";

label2.backgroundColor =[UIColor blueColor];

return label2.text;

}

}

/*设置标题脚的名称*/

-(NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section

{

if (section == 0)

{

return @"我是脚一";

}

else

{

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

[button setTitle:@"我是button 2" forState:UIControlStateNormal ];

return button.titleLabel.text;

}

}

/*设置cell 的宽度 */

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

return 50;

}

/**

*explain:我想把第一个cell显示的数据 向后缩进10个像素其他的cell不变怎么办呢

*/

-(NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath

{

//让第一行缩进10个像素,其他的cell不变

if (indexPath.row ==0) {

return 10;

}

return 0;

}

/**

*explain: 屏蔽指定的cell 的触发事件(对自定义按钮无效,针对系统自带),会用到这个函数

*/

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

//我让第一个cell 点击的时候没有反应

if (indexPath.row ==0) {

return nil;

}

return indexPath;

}

/**

*explain:允许Menu菜单(给 tableview 加个长按快捷菜单)

*/

-(BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath

{

return YES;

}

//每个cell都可以点击出现Menu菜单

-(BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender

{

//1只显示 copy,不显示其他

/* if (action == @selector(cut)){

return NO;

} else if(action == @selector(copy:)){

return YES;

}

else if(action == @selector(paste:)){

return NO;

}

else if(action == @selector(select:)){

return NO;

}

else if(action == @selector(selectAll:)){

return NO;

} else {

return [super canPerformAction:action withSender:sender];

}

*/

// 2直接返回yes,表示全部显示

return YES;

}

-(void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender

{

if (action ==@selector(copy:)) {

//复制到剪切板

NSString *str=[array1 objectAtIndex:[indexPath row]];

[[UIPasteboard generalPasteboard] setPersistent:YES];

[[UIPasteboard generalPasteboard] setValue:str forPasteboardType:[UIPasteboardTypeListString objectAtIndex:0]];

}

if (action ==@selector(cut:)) {

//复制到剪切板

NSString *str=[array1 objectAtIndex:[indexPath row]];

[[UIPasteboard generalPasteboard] setPersistent:YES];

[[UIPasteboard generalPasteboard] setValue:str forPasteboardType:[UIPasteboardTypeListString objectAtIndex:0]];

//剪切完成以后清空

[_arrayValue replaceObjectAtIndex:indexPath.row withObject:@""];

//刷新cell

[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]withRowAnimation:UITableViewRowAnimationNone];

}

if (action ==@selector(paste:)) {

NSString *copystr=[array1 objectAtIndex:[indexPath row]];

NSString *pasteString = [UIPasteboard generalPasteboard].string;

NSLog(@"pasteString:%@",pasteString);

NSString *tmpString = [NSString stringWithFormat:@"%@%@",copystr,pasteString];

NSLog(@"tmpString:%@",tmpString);

#warning <#message#>

[_arrayValue replaceObjectAtIndex:[indexPath row] withObject:tmpString];

// [array se]

[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]withRowAnimation:UITableViewRowAnimationNone];

}

}

/**

*explain:给 tableview 添加索引

*/

-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView

{

return array1;

}
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