本Demo為練手小項目，主要是熟悉目前主流APP的架構模式.此項目中采用MVC設計模式,純代碼和少許XIB方式實現.主要實現了朋友圈功能和搖一搖功能.
預覽效果:
主要重點
1.整體架構
利用UITabBarController和UINavigationController配合實現.其中要注意定義基類,方便整體上的管理,例如對UINavigationController頭部的顏色,字體和渲染顏色等設置.以及對UITabBarController的底部的渲染等.
[self.navigationBarsetBackgroundImage:[UIImageimageNamed:@"Dimensional-_Code_Bg"]forBarMetrics:UIBarMetricsDefault]; [self.navigationBarsetTitleTextAttributes:@{ NSForegroundColorAttributeName:[UIColor whiteColor] }]; [self.navigationBarsetTintColor:[UIColor whiteColor]];2.發現界面和我的界面
利用UITableViewController和Plist文件實現界面的展示.實現過程中有采用數據模型或直接利用字典等方式.這里的實現比較簡單,就不多說啦.
- (instancetype)initWithDict:(NSDictionary *)dict{ if (self = [super init]) { [selfsetValuesForKeysWithDictionary:dict];}return self;} + (instancetype)pictureWithDict:(NSDictionary *)dict{ return [[self alloc]initWithDict:dict];}3.朋友圈功能的實現
這里面主要的難點在于朋友圈首頁的下拉刷新效果的實現,和選擇照片頁的狀態重用問題,以及照片的傳遞和代理的實現等.
朋友圈首頁的下拉刷新效果:主要利用transform屬性和scrollview的多種滾動狀態.
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{ self.dragging = YES;}- (void)scrollViewDidScroll:(UIScrollView *)scrollView{ if (self.num == 0) { self.num ++; return;} CGFloat offsetY = scrollView.contentOffset.y; CGFloat angle = -offsetY* M_PI / 30; if (self.dragging == YES) { if (offsetY <= 110) { self.containerView.y = 10 + offsetY; } }else { if (self.currentY < 120) { self.containerView.y = 10 + offsetY; } }self.activityView.transform = CGAffineTransformMakeRotation(angle); }- (void)scrollViewDidEndDragging:(UIScrollView *)scrollViewwillDecelerate:(BOOL)decelerate{ self.dragging = NO; CGFloat currentY = self.containerView.y;self.currentY = currentY; } - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ [UIViewanimateWithDuration:0.25animations:^{ self.containerView.frame = CGRectMake(15, 120, 30, 30); self.activityView.transform = CGAffineTransformMakeRotation(2 * M_PI);}]; }其中照片的展示是采用UICollectionViewController來實現的.沒有直接調用系統的相冊,因此加大了難度.自定義了cell,并采用了代理方式來實現類與類之間的通信.
@protocol YYPictureCellDelegate @optional- (void)pictureCell:(YYPictureCell *)cellwithDidClickBtn:(UIButton *)btn; @end - (IBAction)clickSureBtn:(UIButton *)sender { if ([self.delegaterespondsToSelector:@selector(pictureCell:withDidClickBtn:)]) { [self.delegatepictureCell:selfwithDidClickBtn:sender];}} - (void)pictureCell:(YYPictureCell *)cellwithDidClickBtn:(UIButton *)btn{ if ((self.selectedBtn.count == 9) && (!btn.isSelected)) { UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nilmessage:@"最多選取9張照片哦,親!"delegate:nilcancelButtonTitle:@"確定"otherButtonTitles: nil]; [alertshow]; return;} btn.selected = !btn.isSelected; NSIndexPath *indexPath = [self.collectionViewindexPathForCell:cell]; YYPictureModel *model = self.dataArray[indexPath.row]; if (btn.isSelected) { model.clickedBtn = YES; [self.selectedBtnaddObject:btn]; [self.selImageArrayaddObject:model]; } else{ model.clickedBtn = NO; [self.selectedBtnremoveObject:btn]; [self.selImageArrayremoveObject:model];} if (self.selectedBtn.count > 0) { self.doneBtn.enabled = YES; self.doneBtn.selected = YES; self.previewBtn.enabled = YES; self.previewBtn.selected = YES;}else { self.doneBtn.enabled = NO; self.doneBtn.selected = NO; self.previewBtn.enabled = NO; self.previewBtn.selected = NO;} }4.搖一搖功能的實現
搖一搖功能的本身實現十分簡單,就是調用系統的兩個方法即可.難點在于動畫效果.其實這里的動畫效果也不是很難.主要是計算有點復雜.可能是我在網上搜索到的素材有點不合適.導致要考慮各個控件的frame問題…
//實現搖一搖功能- (void)motionBegan:(UIEventSubtype)motionwithEvent:(UIEvent *)event{ self.upLine.hidden = NO;self.downLine.hidden = NO;[UIViewanimateWithDuration:0.6animations:^{ self.upImageView.y -= 60; self.upLine.y -= 60; self.downImageView.y += 60; self.downLine.y += 60; }completion:^(BOOL finished) { [UIViewanimateWithDuration:0.6animations:^{ self.upImageView.y += 60; self.upLine.y += 60; self.downImageView.y -= 60; self.downLine.y -= 60; }completion:^(BOOL finished) { self.upLine.hidden = YES; self.downLine.hidden = YES; //彈出搜索框 [self showSearchView]; [self.searchViewperformSelector:@selector(removeFromSuperview)withObject:nilafterDelay:2.4]; }]; }];}//搖一搖結束后- (void)motionEnded:(UIEventSubtype)motionwithEvent:(UIEvent *)event{ }以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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