1:Zip文件壓縮跟解壓,使用ZipArchive
創建/添加一個zip包ZipArchive* zipFile = [[ZipArchive alloc] init];//次數得zipfilename需要一個完整得路徑,例如***/Documents/demo.zip[zipFile CreateZipFile2:@"zipfilename"]; //有兩種可選得方式進行創建壓縮包,帶密碼和不帶密碼的[[zipFile CreateZipFile2:@"zipfilename" PassWord:@"your password"];//接下來就是將需要壓縮的文件添加到這個壓縮包中//這里第一個參數需要完整的路徑,例如:***/Documents/a.txt newname是指文件在壓縮包中的名字,不需要路徑,只是一個名稱[zipFile addFileToZip:@"fullpath of the file" newname:@"new name of the file without path"];//如果需要將多個文件進行壓縮,即壓縮文件夾,重復addFileToZip方法即可[zipFile CloseZipFile2]; 解壓zip包:ZipArchive* zipFile = [[ZipArchive alloc] init];[zipFile UnzipOpenFile:@"zip file name"]; //同樣,對應的就有兩種打開zip包的方式,帶密碼和不帶密碼[zipFile UnzipOpenFile:@"zip file name" Password:@"password" ];//壓縮包釋放到的位置,需要一個完整路徑 [zipFile UnzipFileTo:@"output path" overwrite:YES];[zipFile UnzipCloseFile];[zipFile release];//記得釋放
1. 壓縮:ZipArchive可以壓縮多個文件,只需要把文件一一addFileToZip即可.ZipArchive* zip = [[ZipArchive alloc] init];NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentpath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;NSString* l_zipfile = [documentpath stringByAppendingString:@"/test.zip"] ; NSString* image1 = [documentpath stringByAppendingString:@"/image1.jpg"] ;NSString* image2 = [documentpath stringByAppendingString:@"/image2.jpg"] ; BOOL ret = [zip CreateZipFile2:l_zipfile];ret = [zip addFileToZip:image1 newname:@"image1.jpg"];ret = [zip addFileToZip:image2 newname:@"image2.jpg"];if( ![zip CloseZipFile2] ) { l_zipfile = @""; } 2. 解壓縮:ZipArchive* zip = [[ZipArchive alloc] init];NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentpath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil; //路徑地址要注意 NSString* l_zipfile = [documentpath stringByAppendingString:@"/test.zip"] ;NSString* unzipto = [documentpath stringByAppendingString:@"/test"] ;if( [zip UnzipOpenFile:l_zipfile] ) { BOOL ret = [zip UnzipFileTo:unzipto overWrite:YES]; if( NO==ret ) { } [zip UnzipCloseFile]; }
2:UITapGestureRecognizer傳值
UIImageView *imageView =[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 200, 200)]; imageView.image=[UIImageimageNamed:@"filter_laozhaopian_a.png"]; imageView.tag = 10000; //可以通過這樣來給下邊的點擊事件傳值 imageView.userInteractionEnabled = YES; UITapGestureRecognizer *singleTap = [[UITapGestureRecognizeralloc] initWithTarget:selfaction:@selector(UesrClicked:)]; [imageView addGestureRecognizer:singleTap]; [self.view addSubview:imageView];- (void)UesrClicked:(UITapGestureRecognizer *)recognizer{ NSLog(@"%d",(recognizer.view.tag - 1000));}
3:自定義self.navigationItem.titleView視圖
UIView *titleView=[[UIView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, KTitleViewHeight)]; //最新定義左邊的按鍵 UIButton *leftItemButton=[UIButton buttonWithType:UIButtonTypeCustom]; leftItemButton.frame=CGRectMake(0, 0, KLeftItemButtonWidth, KLeftItemButtonHeight); [leftItemButton setBackgroundImage:[UIImage imageNamed:@"mapMarkNormal"] forState:UIControlStateNormal]; [leftItemButton setBackgroundImage:[UIImage imageNamed:@"mapMarkSelected"] forState:UIControlStateHighlighted]; [leftItemButton addTarget:self action:@selector(leftButtonAction) forControlEvents:UIControlEventTouchUpInside]; [titleView addSubview:leftItemButton]; [leftItemButton mas_makeConstraints:^(MASConstraintMaker *make) { make.centerY.equalTo(titleView); make.left.equalTo(titleView.mas_left).with.offset(5); make.size.equalTo(CGSizeMake(KLeftItemButtonWidth, KLeftItemButtonHeight)); }]; UILabel *titleLabel=[UILabel new]; titleLabel.textAlignment=NSTextAlignmentCenter; titleLabel.font=[UIFont systemFontOfSize:14]; titleLabel.text=@"廈山中華公園廣場"; [titleView addSubview:titleLabel]; [titleLabel mas_makeConstraints:^(MASConstraintMaker *make) { make.centerY.equalTo(titleView); make.left.equalTo(titleView.mas_left).with.offset((SCREEN_WIDTH-KTitleViewTitleWidte-10)/2); }]; UIButton *downButton=[UIButton new]; [downButton setImage:[UIImage imageNamed:@"FileDownload"] forState:UIControlStateNormal]; [titleView addSubview:downButton]; [downButton mas_makeConstraints:^(MASConstraintMaker *make) { make.right.equalTo(titleView.mas_right).with.offset(-2); make.centerY.equalTo(titleView); make.size.equalTo(CGSizeMake(KTitleViewButtonWidth, KTitleViewButtonHeight)); }]; UILabel *PRoLabel=[UILabel new]; proLabel.font=[UIFont systemFontOfSize:10]; proLabel.textColor=[UIColor colorWithHexString:KWitTourism_APPTextColor]; proLabel.textAlignment=NSTextAlignmentRight; proLabel.text=@"正在下載"; [titleView addSubview:proLabel]; [proLabel mas_makeConstraints:^(MASConstraintMaker *make) { make.right.equalTo(downButton.mas_left).with.offset(-5); make.centerY.equalTo(titleView); make.size.equalTo(CGSizeMake(KTitleViewLabelWidth, KTitleViewLabelHeight)); }]; self.navigationItem.titleView=titleView;
4:實現無限滾動的uiscrollview
對滾動的圖片數組頭尾各增加一張,頭則在其前面增加一張尾部的,尾部則插入一張第一張;并在滾動事件中進行處理,改變其位置;主體代碼如下(若不自寫也可以找相應插件,已封裝):/** * @author wujunyang, 15-06-05 13:06:12 * * @brief 頭部滾動視圖布局 */-(void)setupScrollView{ int imgCount=self.imgdatalist.count; //如果沒有值時 用一張默認的圖片替換顯示 if (imgCount==0) { UIImageView *featureImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"thirdEmpty"]]; featureImageView.frame=self.headerImageView.frame; [self.headerImageView addSubview:featureImageView]; } else{ //實際的圖片個數 _actualImgNum=self.imgdatalist.count; //為實現無限滾動 首先在第一個前面插入一個元素 此元素為最后一個 [self.imgdatalist insertObject:[self.imgdatalist objectAtIndex:([self.imgdatalist count]-1)] atIndex:0]; //在第后一個增加一個原先的第一個 由于上面已被插入一個值 所以原先的第一個變成第二個 所以此處為1 [self.imgdatalist addObject:[self.imgdatalist objectAtIndex:1]]; //增加后的個數 用于處理定義滾動視圖內容的總寬度 int imagDataListCount=self.imgdatalist.count; _scrollView=[[UIScrollView alloc]init]; _scrollView.frame=self.headerImageView.frame; for (int i=0; i<self.imgdatalist.count; i++) { AroundImgBean* aroundimgbean=[self.imgdatalist objectAtIndex:i]; // 獲取圖片 NSString *featureImageName = aroundimgbean.aroundimgurl; UIImageView *featureImageView = [[UIImageView alloc] init]; [featureImageView sd_setImageWithURL:[NSURL URLWithString:featureImageName] placeholderImage:[UIImage imageNamed:@"thirdEmpty"]]; // 設置圖片尺寸位置 CGFloat featureWidth = SCREEN_WIDTH; CGFloat featureHeight = self.headerImageView.frame.size.height; CGFloat featureX = SCREEN_WIDTH * i; CGFloat featureY = 0; featureImageView.frame = CGRectMake(featureX, featureY, featureWidth, featureHeight); [_scrollView addSubview:featureImageView]; } // 設置scrollView功能屬性 _scrollView.userInteractionEnabled = YES; _scrollView.bounces=NO; _scrollView.scrollEnabled = YES; // 支持滾動 _scrollView.contentSize = CGSizeMake(self.headerImageView.frame.size.width * imagDataListCount, 0); // 只需要水平滾動 _scrollView.pagingEnabled = YES; // 支持分頁 _scrollView.showsHorizontalScrollIndicator = NO; // 隱藏水平滾動條 // 設置代理 _scrollView.delegate = self; // 添加 [self.headerImageView addSubview:_scrollView]; }}//滾動事件- (void)scrollViewDidScroll:(UIScrollView *)myscrollView { if ([myscrollView isEqual:_scrollView]) { // 四舍五入,讓圖片滾動超過中線的時候改變頁碼 if (self.imgdatalist.count>0) { CGFloat pageWidth = _scrollView.frame.size.width; int page = floor((_scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1; _currentPageIndex=page; //當前頁數要是沒有超過實際的值時 if (_currentPageIndex<_actualImgNum) { _imageCount=[NSString stringWithFormat:@"%d/%d",_currentPageIndex+1,_actualImgNum]; } else { _imageCount=[NSString stringWithFormat:@"%d/%d",1,_actualImgNum]; } self.imageLabel.text=_imageCount; } else { _imageCountView.hidden=YES; _imageLabel.hidden=YES; } }}/** * @author wujunyang, 15-06-05 11:06:06 * * @brief 滾動事件處理 無限滾動 修改滾動的當前位置 * @param myscrollView <#myscrollView description#> */- (void)scrollViewDidEndDecelerating:(UIScrollView *)myscrollView{ if ([myscrollView isEqual:_scrollView]) { if (_currentPageIndex==0) { [_scrollView setContentOffset:CGPointMake(([self.imgdatalist count]-2)*myscrollView.frame.size.width, 0)]; } if (_currentPageIndex==([self.imgdatalist count]-1)) { [_scrollView setContentOffset:CGPointMake(myscrollView.frame.size.width, 0)]; } }}
新聞熱點
疑難解答