IOS学习之路十四(用TableView做的新闻客户端展示页面)
2013-09-09 22:01 Lves Li 阅读(1245) 评论(0) 编辑 收藏 举报最近做的也个项目,要做一个IOS的新闻展示view(有图有文字,不用UIwebview,因为数据是用webservice解析的到的json数据),自己一直没有头绪,可后来听一个学长说可以用listview.。但我查了查ios好像没有listview。于是就用UITableView和自定义cell解决了这个问题。
效果图如下:
UITableView:
- //
- // NewsDetailViewController.h
- // SildToDo
- //
- // Created by WildCat on 13-8-18.
- // Copyright (c) 2013年 wildcat. All rights reserved.
- //
- #import <UIKit/UIKit.h>
- @interface NewsDetailViewController : UITableViewController
- @property (nonatomic,copy) NSArray *dataArray;
- @property (nonatomic, strong)
- UISwipeGestureRecognizer *swipeGestureRecognizer;
- @end
- //
- // NewsDetailViewController.m
- // SildToDo
- //
- // Created by WildCat on 13-8-18.
- // Copyright (c) 2013年 wildcat. All rights reserved.
- //
- #import "NewsDetailViewController.h"
- #import "MyTableViewImageCell.h"
- #define FONT_SIZE 14.0f
- #define TITLE_FONT_SIZE 18.0f
- #define CELL_CONTENT_WIDTH 320.0f
- #define CELL_CONTENT_MARGIN 12.0f
- @interface NewsDetailViewController ()
- @property NSInteger lableCount;
- @end
- @implementation NewsDetailViewController
- @synthesize dataArray;
- @synthesize lableCount;
- @synthesize swipeGestureRecognizer;
- - (id)initWithStyle:(UITableViewStyle)style
- {
- self = [super initWithStyle:style];
- if (self) {
- }
- return self;
- }
- - (void)viewDidLoad
- {
- [super viewDidLoad];
- UIImage *myimage1=[UIImage imageNamed:@"3.jpeg"];
- UIImage *myimage2=[UIImage imageNamed:@"2.jpg"];
- self.dataArray=[NSArray arrayWithObjects:@"小米手机-HAXLR8on硬件黑客马拉松 开团了!",@" 2 由小米手机独家冠名,CSDN、Seeed Studio、HAXLR8R联合举办的硬件黑客马拉松“小米手机-HAXLR8on”,将于8月24日至8月25日在深圳贝塔咖啡举行。你希望做一个手机拍照的控制器?还是高端一点,做一个由脑波控制的小设备?这些在这里都能实现!本次比赛设有一等奖一个、二等奖两个、三等奖三个以及参与奖若干。一等奖获得者可赢取由小米独家提",myimage2,@" 3 供的10000元奖金和一部小米手机,而且每一位参赛者也都由小米手机独家冠名,CSDN、Seeed Studio、HAXLR8R联合举办的硬件黑客马拉松“小米",myimage1,@" 4 手机-HAXLR8on”,将于8月24日至8月25日在深圳贝塔咖啡举行。你希望做一个手机拍照的控制器?还是高端一点,做一个由脑波控制的小设备?这些在这里都能实现!本次比赛设有一等奖一个、二等奖两个、三等奖三个以及参与奖若干。一等奖获得者可赢取由小米独家提供的10000元奖金和一部小米手机,而且每一位参赛者也都将获得由小米独家提供小米盒子一台。", nil];
- //手势识别
- self.swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc]
- initWithTarget:self action:@selector(handleSwipes:)];
- /* Swipes that are performed from right to left are to be detected */
- self.swipeGestureRecognizer.direction=UISwipeGestureRecognizerDirectionRight;
- self.swipeGestureRecognizer.direction=UISwipeGestureRecognizerDirectionDown;
- /* Just one finger needed */
- self.swipeGestureRecognizer.numberOfTouchesRequired = 1;
- /* Add it to the view */
- [self.tableView addGestureRecognizer:self.swipeGestureRecognizer];
- self.tableView.bounces=NO;
- }
- - (void)viewDidUnload
- {
- [super viewDidUnload];
- self.swipeGestureRecognizer = nil;
- }
- //手势识别处理方法
- - (void) handleSwipes:(UISwipeGestureRecognizer *)paramSender{
- if (paramSender.direction & UISwipeGestureRecognizerDirectionDown){ NSLog(@"Swiped Down.");
- }
- if (paramSender.direction & UISwipeGestureRecognizerDirectionLeft){
- NSLog(@"Swiped Left."); }
- if (paramSender.direction & UISwipeGestureRecognizerDirectionRight){ NSLog(@"Swiped Right.");
- }
- if (paramSender.direction & UISwipeGestureRecognizerDirectionUp){
- NSLog(@"Swiped Up."); }
- }
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation == UIInterfaceOrientationPortrait);
- }
- #pragma mark - Table view data source
- - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
- {
- return 1;
- }
- - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
- {
- return [self.dataArray count];
- }
- - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
- {
- static NSString *CellIdentifier = @"Cell";
- static NSString *ImageCellIdentifier = @"MyTableViewImageCell";
- UILabel *label = nil;
- UITableViewCell *cell=nil;
- MyTableViewImageCell *imageCell=nil;
- //判断对象的类型
- if ([[self.dataArray objectAtIndex:[indexPath row]] isKindOfClass:[NSString class]]) { //如果是文字
- cell= [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
- CGSize size;
- if (cell == nil)
- {
- cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
- label = [[UILabel alloc] initWithFrame:CGRectZero];
- [label setLineBreakMode:UILineBreakModeWordWrap];
- [label setNumberOfLines:0];
- [label setTag:1];
- [[cell contentView] addSubview:label];
- }
- NSString *text = [self.dataArray objectAtIndex:[indexPath row]];
- if (!label){ label = (UILabel*)[cell viewWithTag:1];}
- CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
- if (indexPath.row==0) { //如果是文章标题
- [label setFont:[UIFont boldSystemFontOfSize:TITLE_FONT_SIZE]];
- [label setMinimumFontSize:TITLE_FONT_SIZE];
- size = [text sizeWithFont:[UIFont boldSystemFontOfSize:TITLE_FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
- }else{
- [label setFont:[UIFont systemFontOfSize:FONT_SIZE]];
- [label setMinimumFontSize:FONT_SIZE];
- size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
- }
- [label setText:text];
- [label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];
- }else if([[self.dataArray objectAtIndex:[indexPath row]] isKindOfClass:[UIImage class]]){ //如果是图片
- imageCell= [tableView dequeueReusableCellWithIdentifier:ImageCellIdentifier];
- if (cell==nil) {
- cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ImageCellIdentifier];
- }
- imageCell.myImageView.image=[self.dataArray objectAtIndex:[indexPath row]];
- imageCell.selectionStyle = UITableViewCellSelectionStyleNone;//不能被选择
- return imageCell;
- }
- cell.selectionStyle = UITableViewCellSelectionStyleNone;//不能被选择
- return cell;
- }
- -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
- NSString *text;
- CGFloat lastHeight=0.f;
- if ([[self.dataArray objectAtIndex:indexPath.row] isKindOfClass:[NSString class]]) {
- text = [self.dataArray objectAtIndex:indexPath.row];
- CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
- CGSize size;
- if (indexPath.row==0) {
- size = [text sizeWithFont:[UIFont boldSystemFontOfSize:TITLE_FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
- }else{
- size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
- }
- CGFloat height = MAX(size.height, 44.0f);
- lastHeight=height + (CELL_CONTENT_MARGIN * 2);
- }else{
- if ([[self.dataArray objectAtIndex:indexPath.row] size].height>112.f) {
- lastHeight=112.f;
- }else{
- lastHeight=[[self.dataArray objectAtIndex:indexPath.row] size].height;
- }
- }
- return lastHeight;
- }
- #pragma mark - Table view delegate
- - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
- {
- }
- @end
UItableViewCell:
- // MyTableViewImageCell.h
- // SildToDo
- //
- // Created by WildCat on 13-8-18.
- // Copyright (c) 2013年 wildcat. All rights reserved.
- //
- #import <UIKit/UIKit.h>
- @interface MyTableViewImageCell : UITableViewCell
- @property (weak, nonatomic) IBOutlet UIImageView *myImageView;
- @end
- // MyTableViewImageCell.m
- // SildToDo
- //
- // Created by WildCat on 13-8-18.
- // Copyright (c) 2013年 wildcat. All rights reserved.
- //
- #import "MyTableViewImageCell.h"
- @implementation MyTableViewImageCell
- @synthesize myImageView;
- - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
- {
- self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
- if (self) {
- // Initialization code
- }
- return self;
- }
- - (void)setSelected:(BOOL)selected animated:(BOOL)animated
- {
- [super setSelected:selected animated:animated];
- // Configure the view for the selected state
- }
- @end
StoryBoard:
具体操作我就不说了挺简单,想知道的可以到新浪微博@我。