iOS一些实用的技巧

迷南。 2022-08-20 09:18 211阅读 0赞

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 <UIWebViewDelegate>
    
     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:@"<html><center><font size=+5 color='red'>AnError Occurred;<br>%@</font></center></html>",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;