iOS Development Basics-Fragmentation 14

1:zip file compression with decompression, using ziparchive

Create/Add a Zip package ziparchive* zipfile = [[Ziparchive alloc] init];//times zipfilename requires a complete path, such as ***/documents/demo.zip[ ZipFile createzipfile2:@ "Zipfilename"]; There are two alternative ways to create a compressed package, with a password and without a password [[ZipFile createzipfile2:@] zipfilename "password:@" Your Password "];// The next step is to add the files that need to be compressed into the compressed package//Here The first parameter requires a complete path, for example: ***/documents/a.txt  newname is the name of the file in the compressed package, no path required, just a name [ZipFile addfiletozip:@ "FullPath of the file" newname:@ "new name of the file without path"];//if you need to compress multiple files, that is, compress the folder, Repeat Addfiletozip method can be [ZipFile CloseZipFile2]; Unzip the ZIP package: ziparchive* zipfile = [[Ziparchive alloc] init]; [ZipFile unzipopenfile:@ "ZIP file name"]; Similarly, there are two ways to open the zip package, with a password and without a password [zipfile unzipopenfile:@ "ZIP file name" password:@ "Password"];//the location of the compressed package, need a full path [ ZipFile unzipfileto:@ "Output path" overwrite:yes]; [ZipFile Unzipclosefile]; [ZipFile release];//Remember to release

1. Compression: Ziparchive can compress multiple files, only need to addfiletozip the file one by one. 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:i Mage2 newname:@ "Image2.jpg"];if (![  Zip CloseZipFile2]) {l_zipfile = @ ""; } 2. Decompression: ziparchive* zip = [[Ziparchive alloc] init]; Nsarray *paths = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES); NSString *documentpath = ([Paths count] > 0)?  [Paths objectatindex:0]: nil; The path address should be noted nsstring* l_zipfile = [Documentpath stringbyappendingstring:@ "/test.zip"]; nsstring* Unzipto = [documentpath stringbyappendingstring:@ "/test"]; if ([Zip Unzipopenfile:l_zipfile]) {BOOL ret = [Z   IP unzipfileto:unzipto Overwrite:yes]; if (No==ret) {} [zip Unzipclosefile]; }

2:uitapgesturerecognizer Pass Value

Uiimageview *imageview =[[uiimageview alloc]initwithframe:cgrectmake (N, A, ())];    imageview.image=[uiimageimagenamed:@ "Filter_laozhaopian_a.png"];    Imageview.tag = 10000;  You can pass this to the bottom of the Click event value    imageview.userinteractionenabled = YES;    UITapGestureRecognizer *singletap = [[Uitapgesturerecognizeralloc] Initwithtarget:selfaction: @selector (UesrClicked :)];    [ImageView Addgesturerecognizer:singletap];    [Self.view addsubview:imageview];-(void) uesrclicked: (UITapGestureRecognizer *) recognizer{   

3: Custom Self.navigationItem.titleView View

UIView *titleview=[[uiview alloc] Initwithframe:cgrectmake (0, 0, Screen_width, ktitleviewheight)];    Latest definition left button 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];    [email protected] "Ha Shan Zhonghua Park Plaza";    [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;[email protected] "downloading";        [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: Uiscrollview for unlimited scrolling

The scroll of the picture array to add a head and tail, the header of the front to add a tail, the tail is inserted into the first sheet, and in the scrolling event to process, change its position; The main code is as follows (if not self-written can also find the corresponding plug-in, encapsulated):/** * @author Wujunyang,        15-06-05 13:06:12 * * @brief head scrolling view layout */-(void) setupscrollview{int imgcount=self.imgdatalist.count; If there is no value, replace the display if (imgcount==0) {Uiimageview *featureimageview = [[Uiimageview alloc] with a default picture initwithimage:[uii        Mage imagenamed:@ "Thirdempty"];        Featureimageview.frame=self.headerimageview.frame;    [Self.headerimageview Addsubview:featureimageview];        } else{//actual number of pictures _actualimgnum=self.imgdatalist.count;  To achieve infinite scrolling first insert an element in front of this element for the last [self.imgdatalist insertobject:[self.imgdatalist objectatindex: ([self.imgdatalist        COUNT]-1)] atindex:0];         In the latter one, add a previous first one because the above has been inserted a value so the first one becomes the second so here is 1 [self.imgdatalist addobject:[self.imgdatalist objectatindex:1];        The added number is used to process the total width of the defined scrolling view content 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];            Get picture NSString *featureimagename = Aroundimgbean.aroundimgurl;            Uiimageview *featureimageview = [[Uiimageview alloc] init]; [Featureimageview sd_setimagewithurl:[nsurl Urlwithstring:featureimagename] Placeholderimage:[uiimage imageNamed:@                        "Thirdempty"];            Set picture size position 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];        }//Set ScrollView function Property _scrollview.userinteractionenabled = YES;       _scrollview.bounces=no; _scrollview.scrollenabled = YES; Support scrolling _scrollview.contentsize = Cgsizemake (self.headerImageView.frame.size.width * imagdatalistcount, 0); Only need to scroll horizontally _scrollview.pagingenabled = YES; Support paging _scrollview.showshorizontalscrollindicator = NO;                Hide horizontal scroll bar//set proxy _scrollview.delegate = self;    Add [Self.headerimageview Addsubview:_scrollview]; }}//scrolling Event-(void) Scrollviewdidscroll: (Uiscrollview *) Myscrollview {if ([Myscrollview Isequal:_scrollview]) {//rounding        , let the picture scroll over the midline when changing the page number if (self.imgdatalist.count>0) {cgfloat pagewidth = _scrollview.frame.size.width;        int page = Floor ((_SCROLLVIEW.CONTENTOFFSET.X-PAGEWIDTH/2)/pagewidth) + 1;        _currentpageindex=page; If the current page does not exceed the actual value 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 scrolling event handling infinite scrolling Modify the current position of scrolling * @param Myscrollview < #myscroll View 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:cgpoi        Ntmake (myscrollView.frame.size.width, 0)]; }    }}

iOS Development Basics-Fragmentation 14