iOS實現微信朋友圈與搖一搖功能_IOS

本Demo為練手小項目，主要是熟悉目前主流APP的架構模式.此項目中採用MVC設計模式,純程式碼和少許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,字型和渲染顏色等設定.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.發現介面和我的介面

利用UITableViewController和Plist檔案實現介面的展示.實現過程中有採用資料模型或直接利用字典等方式.這裡的實現比較簡單,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

這裡面主要的痛點在於朋友圈首頁的下拉重新整理效果的實現,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.

朋友圈首頁的下拉重新整理效果: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);}]; }

其中照片的展示是採用UICollectionViewController來實現的.沒有直接調用系統的相簿,因此加大了難度.自訂了cell,並採用了代理方式來實作類別與類之間的通訊.

@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.痛點在於動畫效果.其實這裡的動畫效果也不是很難.主要是計算有點複雜.可能是我在網上搜尋到的素材有點不合適.導致要考慮各個控制項的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;     //彈出搜尋方塊    [self showSearchView];    [self.searchViewperformSelector:@selector(removeFromSuperview)withObject:nilafterDelay:2.4];  }]; }];}//搖一搖結束後- (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協助，也希望大家多多支援雲棲社區。