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获取触摸的点- (CGPoint)locationInView:(UIView *)view;- (CGPoint)previousLocationInView:(UIView *)view; 自动适应父视图大小 self.view.autoresizesSubviews = YES;    self.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 把plist文件中的数据赋给数组 NSString *path = [[NSBundle mainBundle] pathForResource:@"States" ofType:@"plist"];NSArray *array = [NSArray arrayWithContentsOfFile:path]; 从plist中获取数据赋给字典 NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"book" ofType:@"plist"];NSDictionary *dictionary = [NSDictionary dictionaryWithContentsOfFile:plistPath]; 获取Documents目录 NSString *documentsDirectory = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0]; 获取tmp目录 NSString *tmpPath = NSTemporaryDirectory(); 汉字转码 NSString *oriString = @"测试";NSString *escapedString = [oriString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 利用UIWebView显示pdf文件，网页等等 
   
     UIWebView *webView = [[UIWebView alloc]initWithFrame:self.view.bounds];webView.delegate = self;webView.scalesPageToFit = YES;webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;[webView setAllowsInlineMediaPlayback:YES];[self.view addSubview:webView];NSString *pdfPath = [[NSBundle mainBundle] pathForResource:@"book" ofType:@"pdf"];NSURL *url = [NSURL fileURLWithPath:pdfPath];NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:(NSURLRequestUseProtocolCachePolicy) timeoutInterval:5];[webView loadRequest:request]; UIWebView和html的简单交互 myWebView = [[UIWebView alloc]initWithFrame:self.view.bounds];[myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]]];NSError *error;NSString *errorString = [NSString stringWithFormat:@"
    
     AnError Occurred;
%@
    ",error];[myWebView loadHTMLString:errorString baseURL:nil];//页面跳转了以后，停止载入-(void)viewWillDisappear:(BOOL)animated {    if (myWebView.isLoading) {        [myWebView stopLoading];    }    myWebView.delegate = nil;    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;} 设置日期格式 dateFormatter = [[NSDateFormatter alloc]init];dateFormatter.locale = [NSLocale currentLocale];dateFormatter.calendar = [NSCalendar autoupdatingCurrentCalendar];dateFormatter.timeZone = [NSTimeZone defaultTimeZone];dateFormatter.dateStyle = NSDateFormatterShortStyle;NSLog(@"%@",[dateFormatter stringFromDate:[NSDate date]]); 设置UITableView的滚动条颜色 self.tableView.indicatorStyle = UIScrollViewIndicatorStyleWhite; 调用电话，短信，邮件 [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto:apple@mac.com?Subject=hello"]];sms://调用短信tel://调用电话itms://打开MobileStore.app 获取版本信息 UIDevice *myDevice = [UIDevice currentDevice];NSString *systemVersion = myDevice.systemVersion;
   

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