UIScrollView，UITableView的简单使用

UIScrollView的简单使用

 

1，创建对象

2，设置滑动区域

3，创建滑动的View

4，将滑动的view添加到ScrollView上显示

5，释放对象

   CGRect screenBounds = [ [UIScreen mainScreen]bounds];//返回的是带有状态栏的Rect
    
//    CGRect rect = [ [UIScreen mainScreen]application Frame];//不包含状态栏的Rect

    //创建ScrollViewiew
    UIScrollView *scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0.0f, 0.0f, 500.0f, 500.0f)];
    scrollView.frame=screenBounds;
    scrollView.backgroundColor=[UIColor redColor];
    
    //设置ScollView的滑动区域
    scrollView.contentSize=CGSizeMake(500, 1100);
    
    UIImageView *myImageView= [[UIImageView alloc] initWithFrame: CGRectMake( 0, 0, 500, 1100)];
    
    
    [myImageView setImage:[UIImage imageNamed:@"bk.jpg"]];
    //img添加到Scollview
    [scrollView addSubview:myImageView];
    //scollView添加到View
    [self.view addSubview:scrollView];
    [scrollView release];
    [myImageView release];

 

 

2，UITableView的简单使用，由于最近在做金融相关的开发大量使用到了table相关的控件，android的控件都要自己实现，ios确实自带的效果，想想就有点操蛋 ，，，谁叫ios比android要简单呢？

 

 

 

1，定义标题数据

2，定义标题分别对应的数据

3，实现数据源代理和表格代理（UITableViewDataSource,UITableViewDelegate）

4，创建TableView

5，实现相关的方法

#import "TableViewController.h"

@interface TableViewController (){

    UITableView *table;
}

@property(strong,nonatomic)NSMutableArray *arrayList1; //数据源
@property (strong,nonatomic)NSMutableArray *arrayTitle;//标题
@property(strong,nonatomic)NSMutableArray *arrayList2;

@end

@implementation TableViewController

@synthesize arrayList1;
@synthesize arrayTitle;
@synthesize arrayList2;


- (void)viewDidLoad {
    [super viewDidLoad];
    
    // Uncomment the following line to preserve selection between presentations.
//     self.clearsSelectionOnViewWillAppear = NO;
    
    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
     self.navigationItem.rightBarButtonItem = self.editButtonItem;
    
    table=[[UITableView alloc]initWithFrame:CGRectMake(0, 0, 430, 600)];
    //
    table.dataSource=self;
    table.delegate=self;
    
    if (arrayList1==nil) {
        arrayList1 =[[NSMutableArray alloc]initWithObjects:@"美元／日元",@"美元／韩元",@"韩元／日元",@"港币／日元",@"美元／欧元",@"美元／英镑",@"美元／新加坡元",@"美元／澳元",@"美元／卢布",@"泰铢／日元",@"英镑／泰铢",@"新加坡元／澳门元",@"美元／港币",@"港币／台币",@"台币／越南盾",@"美元／韩元", nil];
        arrayTitle=[[NSMutableArray alloc]initWithObjects:@"自选",@"交叉", nil];
        
        arrayList2=[[NSMutableArray alloc]initWithObjects:@"美元／港币",@"韩元／日元", nil];
      
    }
    
    
    
  
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


//设置标题
-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    
    return [arrayTitle objectAtIndex:section];
}


#pragma mark - Table view data source
//指定多少分区，根据arrayTitle计算
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
#warning Incomplete implementation, return the number of sections
    return [arrayTitle count];
}

//设置数据
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
#warning Incomplete implementation, return the number of rows
    //1,根据当前点击的区域设置数据
    switch (section) {
        case 0:
            
            return [arrayList1 count];
        case 1:
            return [arrayList2 count];
            
        default:
            break;
    }
    
    
    return 0;
    
}

//绘制数据  cellForRowAtINdexPath
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
//    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
    static NSString * string = @"cell";
    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:string];
    if(cell ==  nil)
    {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:string];
    }
    
    //根据分区操作
    switch (indexPath.section) {
        case 0:
            [[cell textLabel] setText:[arrayList1 objectAtIndex:indexPath.row]];
            break;
            
        case 1:
            [[cell textLabel] setText:[arrayList2 objectAtIndex:indexPath.row]];
            
            break;
        default:
            break;
    }
    
    return cell;
}


// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}



// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}



// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}



// Override to support conditional rearranging of the 

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}



#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}


@end

 

1，titleForHeaderInSection  设置数据

2，numberOfSectionsInTableView 根据标题数目进行分区

 

3，numberOfRowsInSection 指定区域数据的条数

 

4，cellForRowAtIndexPath 绘制数据、

    创建cell

  

    static NSString * string = @"cell";
    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:string];
    if(cell ==  nil)
    {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:string];
    }