1:ZIP文件压缩跟解压,使用ZipArchive
创建/添加一个zip包 ZipArchive* zipFile = [[ZipArchive alloc] init]; //次数得zipfilename需要一个完整得路径，例如***/Documents/demo.zip [zipFile CreateZipFile2:@"zipfilename"]; //有两种可选得方式进行创建压缩包，带密码和不带密码的 [[zipFile CreateZipFile2:@"zipfilename" Password:@"your password"]; //接下来就是将需要压缩的文件添加到这个压缩包中 //这里第一个参数需要完整的路径,例如:***/Documents/a.txt newname是指文件在压缩包中的名字,不需要路径，只是一个名称 [zipFile addFileToZip:@"fullpath of the file" newname:@"new name of the file without path"]; //如果需要将多个文件进行压缩,即压缩文件夹，重复addFileToZip方法即可 [zipFile CloseZipFile2]; 解压zip包： ZipArchive* zipFile = [[ZipArchive alloc] init]; [zipFile UnzipOpenFile:@"zip file name"]; //同样，对应的就有两种打开zip包的方式，带密码和不带密码 [zipFile UnzipOpenFile:@"zip file name" Password:@"password" ]; //压缩包释放到的位置，需要一个完整路径 [zipFile UnzipFileTo:@"output path" overwrite:YES]; [zipFile UnzipCloseFile]; [zipFile release]; //记得释放
. 压缩:ZipArchive可以压缩多个文件,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] > ) ? [paths objectAtIndex:] : 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 = @"";
} . 解压缩: ZipArchive* zip = [[ZipArchive alloc] init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentpath = ([paths count] > ) ? [paths objectAtIndex:] : nil; //路径地址要注意 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传值
UIImageView *imageView =[[UIImageView alloc]initWithFrame:CGRectMake(, , , )];
imageView.image=[UIImageimageNamed:@"filter_laozhaopian_a.png"];
imageView.tag = ; //可以通过这样来给下边的点击事件传值
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 - ));
} 3:自定义self.navigationItem.titleView视图
UIView *titleView=[[UIView alloc] initWithFrame:CGRectMake(, , SCREEN_WIDTH, KTitleViewHeight)];
//最新定义左边的按键
UIButton *leftItemButton=[UIButton buttonWithType:UIButtonTypeCustom];
leftItemButton.frame=CGRectMake(, , 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();
make.size.equalTo(CGSizeMake(KLeftItemButtonWidth, KLeftItemButtonHeight));
}];
UILabel *titleLabel=[UILabel new];
titleLabel.textAlignment=NSTextAlignmentCenter;
titleLabel.font=[UIFont systemFontOfSize:];
titleLabel.text=@"厦山中华公园广场";
[titleView addSubview:titleLabel];
[titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerY.equalTo(titleView);
make.left.equalTo(titleView.mas_left).with.offset((SCREEN_WIDTH-KTitleViewTitleWidte-)/);
}];
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(-);
make.centerY.equalTo(titleView);
make.size.equalTo(CGSizeMake(KTitleViewButtonWidth, KTitleViewButtonHeight));
}];
UILabel *proLabel=[UILabel new];
proLabel.font=[UIFont systemFontOfSize:];
proLabel.textColor=[UIColor colorWithHexString:KWitTourism_AppTextColor];
proLabel.textAlignment=NSTextAlignmentRight;
proLabel.text=@"正在下载";
[titleView addSubview:proLabel];
[proLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.equalTo(downButton.mas_left).with.offset(-);
make.centerY.equalTo(titleView);
make.size.equalTo(CGSizeMake(KTitleViewLabelWidth, KTitleViewLabelHeight));
}];
self.navigationItem.titleView=titleView;4:实现无限滚动的uiscrollview
对滚动的图片数组头尾各增加一张，头则在其前面增加一张尾部的，尾部则插入一张第一张；并在滚动事件中进行处理，改变其位置；主体代码如下（若不自写也可以找相应插件，已封装）： /**
* @author wujunyang, 15-06-05 13:06:12
*
* @brief 头部滚动视图布局
*/
-(void)setupScrollView
{
int imgCount=self.imgdatalist.count; //如果没有值时 用一张默认的图片替换显示
if (imgCount==) {
UIImageView *featureImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"thirdEmpty"]];
featureImageView.frame=self.headerImageView.frame;
[self.headerImageView addSubview:featureImageView];
}
else{
//实际的图片个数
_actualImgNum=self.imgdatalist.count;
//为实现无限滚动 首先在第一个前面插入一个元素 此元素为最后一个
[self.imgdatalist insertObject:[self.imgdatalist objectAtIndex:([self.imgdatalist count]-)] atIndex:];
//在第后一个增加一个原先的第一个 由于上面已被插入一个值 所以原先的第一个变成第二个 所以此处为1
[self.imgdatalist addObject:[self.imgdatalist objectAtIndex:]];
//增加后的个数 用于处理定义滚动视图内容的总宽度
int imagDataListCount=self.imgdatalist.count; _scrollView=[[UIScrollView alloc]init];
_scrollView.frame=self.headerImageView.frame; for (int i=; i<self.imgdatalist.count; i++) {
AroundImgBean* aroundimgbean=[self.imgdatalist objectAtIndex:i];
// 获取图片
NSString *featureImageName = aroundimgbean.aroundimgurl;
UIImageView *featureImageView = [[UIImageView alloc] init];
[featureImageView sd_setImageWithURL:[NSURL URLWithString:featureImageName] placeholderImage:[UIImage imageNamed:@"thirdEmpty"]]; // 设置图片尺寸位置
CGFloat featureWidth = SCREEN_WIDTH;
CGFloat featureHeight = self.headerImageView.frame.size.height;
CGFloat featureX = SCREEN_WIDTH * i;
CGFloat featureY = ;
featureImageView.frame = CGRectMake(featureX, featureY, featureWidth, featureHeight);
[_scrollView addSubview:featureImageView];
} // 设置scrollView功能属性
_scrollView.userInteractionEnabled = YES;
_scrollView.bounces=NO;
_scrollView.scrollEnabled = YES; // 支持滚动
_scrollView.contentSize = CGSizeMake(self.headerImageView.frame.size.width * imagDataListCount, ); // 只需要水平滚动
_scrollView.pagingEnabled = YES; // 支持分页
_scrollView.showsHorizontalScrollIndicator = NO; // 隐藏水平滚动条 // 设置代理
_scrollView.delegate = self; // 添加
[self.headerImageView addSubview:_scrollView];
}
} //滚动事件
- (void)scrollViewDidScroll:(UIScrollView *)myscrollView {
if ([myscrollView isEqual:_scrollView]) {
// 四舍五入，让图片滚动超过中线的时候改变页码
if (self.imgdatalist.count>) {
CGFloat pageWidth = _scrollView.frame.size.width;
int page = floor((_scrollView.contentOffset.x - pageWidth / ) / pageWidth) + ;
_currentPageIndex=page; //当前页数要是没有超过实际的值时
if (_currentPageIndex<_actualImgNum) {
_imageCount=[NSString stringWithFormat:@"%d/%d",_currentPageIndex+,_actualImgNum];
}
else
{
_imageCount=[NSString stringWithFormat:@"%d/%d",,_actualImgNum];
} self.imageLabel.text=_imageCount;
}
else
{
_imageCountView.hidden=YES;
_imageLabel.hidden=YES;
}
}
} /**
* @author wujunyang, 15-06-05 11:06:06
*
* @brief 滚动事件处理 无限滚动 修改滚动的当前位置
* @param myscrollView <#myscrollView description#>
*/
- (void)scrollViewDidEndDecelerating:(UIScrollView *)myscrollView
{
if ([myscrollView isEqual:_scrollView]) {
if (_currentPageIndex==) { [_scrollView setContentOffset:CGPointMake(([self.imgdatalist count]-)*myscrollView.frame.size.width, )];
}
if (_currentPageIndex==([self.imgdatalist count]-)) { [_scrollView setContentOffset:CGPointMake(myscrollView.frame.size.width, )];
}
}
}
5：IOS开发实现歌词自动滚动功能一种实现方式
_timer = [NSTimer scheduledTimerWithTimeInterval:0.09f target:self selector:@selector(rollLyc) userInfo:nil repeats:YES]; - (void)rollLyc
{
CGFloat currentTime = _audio.currentTime;
CGFloat lycTime = [_lycList[currentLine + ][@"time"] floatValue];//_lycList是存储有每句歌词和对应的时间的字典集合 currentLine设置为成员变量，在ViewDidLoad中初始为0 NSLog(@"%f --- %f ",currentTime,lycTime); if (currentTime >= lycTime) {
currentLine = currentLine + ;
}
NSIndexPath *indexpath = [NSIndexPath indexPathForRow:currentLine inSection:];
[self.tableView selectRowAtIndexPath:indexpath animated:YES scrollPosition:UITableViewScrollPositionMiddle];
}
6:iOS 从url中获取文件名以及后缀
//这里有一个模拟器沙盒路径(完整路径)
NSString* index=@"/Users/junzoo/Library/Application Support/iPhone Simulator/7.0.3/Applications/63925F20-AF97-4610-AF1C-B6B4157D1D92/Documents/DownLoad/books/2013_50.zip";
对路径截取的9种操作
NSLog(@"1=%@",[index lastPathComponent]);
NSLog(@"2=%@",[index stringByDeletingLastPathComponent]);
NSLog(@"3=%@",[index pathExtension]);
NSLog(@"4=%@",[index stringByDeletingPathExtension]);
NSLog(@"5=%@",[index stringByAbbreviatingWithTildeInPath]);
NSLog(@"6=%@",[index stringByExpandingTildeInPath]);
NSLog(@"7=%@",[index stringByStandardizingPath]);
NSLog(@"8=%@",[index stringByResolvingSymlinksInPath]);
NSLog(@"9=%@",[[index lastPathComponent] stringByDeletingPathExtension]);
对应结果
=2013_50.zip
=/Users/junzoo/Library/Application Support/iPhone Simulator/7.0./Applications/63925F20-AF97--AF1C-B6B4157D1D92/Documents/DownLoad/books
=zip
=/Users/junzoo/Library/Application Support/iPhone Simulator/7.0./Applications/63925F20-AF97--AF1C-B6B4157D1D92/Documents/DownLoad/books/2013_50
=~/Documents/DownLoad/books/2013_50.zip
=/Users/junzoo/Library/Application Support/iPhone Simulator/7.0./Applications/63925F20-AF97--AF1C-B6B4157D1D92/Documents/DownLoad/books/2013_50.zip
=/Users/junzoo/Library/Application Support/iPhone Simulator/7.0./Applications/63925F20-AF97--AF1C-B6B4157D1D92/Documents/DownLoad/books/2013_50.zip
=/Users/junzoo/Library/Application Support/iPhone Simulator/7.0./Applications/63925F20-AF97--AF1C-B6B4157D1D92/Documents/DownLoad/books/2013_50.zip
=2013_50