以前發表過一篇博客「IOS開發之新浪圍脖」,在編寫代碼的時候太偏重功能的實現了,寫完基本功能後看着代碼有些彆扭,特別是用到的四種cell的類,重複代碼有點多,因此今天花點時間把代碼重構一下。爲了減小代碼的重複編寫把cell中相同的部分抽象成父類,而後繼承。不過也是結合着storyboard作的。在優化時轉發的View和評論的View類似,因而就作了個重用。在原來的代碼上就把cell的代碼進行了重寫,因此本篇做爲補充,關鍵代碼還得看以前的博客。html
1.第一種cell,只有微博內容,沒有圖片,效果以下:ios
cell對應的代碼以下:post
TextTableViewCell.h優化
1 #import <UIKit/UIKit.h> 2 3 //TableView要回調的block,用於把cell中的按鈕的tag傳給TableView 4 typedef void (^MyCellBlock) (UITableViewCell * cell, int tag); 5 6 @interface TextTableViewCell : UITableViewCell 7 //接收block塊 8 -(void)setMyCellBlock:(MyCellBlock) block; 9 10 //接收字典 11 -(void) setDic:(NSDictionary *)dic; 12 13 @end
TextTableViewCell.m(帶圖片的cell繼承於這個cell)atom
1 #import "TextTableViewCell.h" 2 3 @interface TextTableViewCell() 4 5 @property (strong, nonatomic) IBOutlet UIImageView *headImage; 6 @property (strong, nonatomic) IBOutlet UILabel *nameLabel; 7 @property (strong, nonatomic) IBOutlet UILabel *dateLabel; 8 @property (strong, nonatomic) IBOutlet UILabel *weiboTextLabel; 9 10 @property (strong, nonatomic) NSDictionary *dic; 11 @property (strong, nonatomic) MyCellBlock block; 12 13 @end 14 15 @implementation TextTableViewCell 16 17 //獲取傳入的block塊 18 -(void)setMyCellBlock:(MyCellBlock)block 19 { 20 self.block = block; 21 } 22 23 //獲取傳入的參數,用於給咱們的cell中的標籤賦值 24 -(void) setDic:(NSDictionary *)dic 25 { 26 27 //設置頭像 28 [self.headImage setImageWithURL:[NSURL URLWithString:dic[@"user"][@"profile_image_url"]]]; 29 30 //設置暱稱 31 self.nameLabel.text = dic[@"user"][@"name"]; 32 33 //設置時間 34 NSDateFormatter *iosDateFormater=[[NSDateFormatter alloc]init]; 35 iosDateFormater.dateFormat=@"EEE MMM d HH:mm:ss Z yyyy"; 36 37 //必須設置,不然沒法解析 38 iosDateFormater.locale=[[NSLocale alloc]initWithLocaleIdentifier:@"en_US"]; 39 NSDate *date=[iosDateFormater dateFromString:dic[@"created_at"]]; 40 41 //目的格式 42 NSDateFormatter *resultFormatter=[[NSDateFormatter alloc]init]; 43 [resultFormatter setDateFormat:@"MM月dd日 HH:mm"]; 44 self.dateLabel.text = [resultFormatter stringFromDate:date]; 45 46 //設置微博博文 47 self.weiboTextLabel.text = dic[@"text"]; 48 49 } 50 51 52 //經過block回調來返回按鈕的tag 53 - (IBAction)tapCellButton:(id)sender { 54 UIButton *button = sender; 55 self.block(self, button.tag); 56 } 57 58 - (void)awakeFromNib 59 { 60 // Initialization code 61 } 62 63 - (void)setSelected:(BOOL)selected animated:(BOOL)animated 64 { 65 [super setSelected:selected animated:animated]; 66 67 // Configure the view for the selected state 68 } 69 70 @end
二、上面的代碼有點多,若是咱們再加第二個cell(原微博帶圖片的)就簡單多了,能夠繼承與上面的cellurl
ImageTableViewCell.m的代碼以下:(只把要添加的東西加上便可,是否是代碼少多了)spa
@interface ImageTableViewCell() @property (strong, nonatomic) IBOutlet UIImageView *contentImage; @end @implementation ImageTableViewCell -(void)setDic:(NSDictionary *)dic { [super setDic:dic]; [self.contentImage setImageWithURL:[NSURL URLWithString:dic[@"thumbnail_pic"]]]; } @end
3.第三種cell,是轉發微博不帶圖片的,以下:3d
ReTextTableViewCell也是繼承於TextTableViewCell. ReTextTableViewCell.m的代碼以下:code
1 @interface ReTextTableViewCell () 2 @property (strong, nonatomic) IBOutlet UILabel *weiboTextLabel; 3 @property (strong, nonatomic) IBOutlet NSLayoutConstraint *textHeightConstraint; 4 5 @property (strong, nonatomic) IBOutlet UITextView *reTextView; 6 7 @end 8 9 @implementation ReTextTableViewCell 10 11 -(void)setDic:(NSDictionary *)dic 12 { 13 [super setDic:dic]; 14 //移除約束 15 [self removeConstraint:self.textHeightConstraint]; 16 17 //給據text的值求出textLabel的高度 18 NSString *text = dic[@"text"]; 19 NSDictionary * dic1 = @{NSFontAttributeName: [UIFont systemFontOfSize:14]}; 20 21 CGRect frame = [text boundingRectWithSize:CGSizeMake(260, 1000) options:NSStringDrawingUsesLineFragmentOrigin attributes:dic1 context:nil]; 22 23 //建立新的約束 24 NSString *heightValue = [NSString stringWithFormat:@"V:[_weiboTextLabel(%lf)]",frame.size.height+10]; 25 NSArray *constraint = [NSLayoutConstraint constraintsWithVisualFormat:heightValue options:0 metrics:nil views:NSDictionaryOfVariableBindings(_weiboTextLabel)]; 26 27 self.textHeightConstraint = constraint[0]; 28 [self addConstraint:self.textHeightConstraint]; 29 30 self.weiboTextLabel.text = text; 31 32 self.reTextView.text = dic[@"retweeted_status"][@"text"]; 33 34 } 35 @end
4.第四種cell就是轉發帶圖片的啦,效果以下:orm
由於第四種cell只比第三種cell多啦張圖片,因此繼承於第三種cell便可,代碼以下:
#import "ReImageTableViewCell.h" @interface ReImageTableViewCell() @property (strong, nonatomic) IBOutlet UIImageView *contentImageView; @end @implementation ReImageTableViewCell -(void)setDic:(NSDictionary *)dic { [super setDic:dic]; [self.contentImageView setImageWithURL:[NSURL URLWithString:dic[@"retweeted_status"][@"thumbnail_pic"]]]; } @end
來看一下最終的運行效果:
由上面的界面能夠清楚的看到轉發和評論的界面是基本一致的,因此咱們在代碼中能夠用一個ViewController來控制這個視圖,經過點擊不一樣的按鈕來拼接不一樣的url. 選擇的業務邏輯以下:
1 if ([self.tag isEqualToValue:@2]) 2 { 3 [self post:comments_create Content:@"comment"]; 4 } 5 if ([self.tag isEqualToValue:@1]) 6 { 7 [self post:repost_test Content:@"status"]; 8 }
在轉發頁面中用到啦一個TextView, 咱們給鍵盤上添加了一個Toolbar來進行鍵盤的回收,代碼以下:
1 //TextView的鍵盤定製回收按鈕 2 UIToolbar * toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)]; 3 4 UIBarButtonItem * item1 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(tapDone:)]; 5 UIBarButtonItem * item2 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; 6 UIBarButtonItem * item3 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; 7 toolBar.items = @[item2,item1,item3]; 8 9 self.commentsTextView.inputAccessoryView =toolBar;
在要回調的方法中回收鍵盤:
1 - (IBAction)tapDone:(id)sender { 2 [self.commentsTextView resignFirstResponder]; 3 }