01 2014 档案

ios 导航栏遮盖控件问题
摘要：【问题现象】导航栏推进到某个ViewController，该ViewController的view的顶部控件被导航栏遮盖。需要对导航栏设置，使ViewController的View坐标自动进行Y偏移，如下：- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{ self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; UIViewC. 阅读全文

posted @ 2014-01-21 14:01 trako 阅读(455) 评论(0) 推荐(0)

ios 导航栏按钮添加与隐藏
摘要：在文件xxxViewController.m中，// 添加前进按钮UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Forward2" style:UIBarButtonItemStylePlain target:self action:@selector(forwardButtonPressed:)];self.navigationItem.rightBarButtonItem = rightButton; // 隐藏返回按钮UIBarButtonItem *leftButton 阅读全文

posted @ 2014-01-17 16:50 trako 阅读(842) 评论(0) 推荐(0)

ios 移除子视图方法
摘要：移除子视图两种方法方法1：for (int loop = 0; loop < [subViews count]; loop++){ UIView *subView = [subViews objectAtIndex:loop]; [subView removeFromSuperview];}方法2：NSArray *subViews = [subView subviews];if([subViews count] != 0){ [subViews makeObjectsPerformSelector:@selector(removeFromSuperview)];} 阅读全文

posted @ 2014-01-17 14:13 trako 阅读(461) 评论(0) 推荐(0)

ios 日期时间打印
摘要：NSDateFormatter *format = [[NSDateFormatter alloc] init];[format setDateFormat:@"yyyy-mm-dd hh:mm:ss"];NSString *strDate = [format stringFromDate:[NSDate date]];DLog(@"%@", strDate);其中DLog定义#ifdef DEBUG #define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCT 阅读全文

posted @ 2014-01-15 09:32 trako 阅读(253) 评论(0) 推荐(0)

ios Storyboard doesn't contain a view controller with identifier
摘要：【问题现象】创建自定义storyboard，添加ViewController之后通过instantiateViewControllerWithIdentifier方法创建ViewController异常。【问题分析】原始代码：- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{ // Override point for customization after application launch. self.window = [ 阅读全文

posted @ 2014-01-14 15:57 trako 阅读(1211) 评论(0) 推荐(0)

ios webview加载html提示101错误问题解决
摘要：使用UIWebView显示html，提示：err is Error Domain=WebKitErrorDomain Code=101 “The operation couldn’t be completed. (WebKitErrorDomain error 101.)”NSString *path = [[NSBundle mainBundle] pathForResource:@"vhugo" ofType:@"epub"];NSURL *url = [NSURL URLWithString:[path stringByAddingPercentE 阅读全文

posted @ 2014-01-10 13:11 trako 阅读(788) 评论(0) 推荐(0)

ios 自定义UIView绘制时文字上下颠倒问题解决
摘要：- (void)drawRect:(CGRect)rect{ [self showPage:m_currentPageIndex];}- (void)showPage:(int)pageIndex{ CGContextRef cntxRef = UIGraphicsGetCurrentContext(); CGPDFPageRef page = CGPDFDocumentGetPage (m_docRef, pageIndex);// 2 // Quartz画图得坐标系统是以左下角为开始点，但iphone视图是以左上角为开始点 CGContextTranslateCTM(cntxRef, 0. 阅读全文

posted @ 2014-01-10 13:07 trako 阅读(460) 评论(0) 推荐(0)

ios log打印
摘要：当使用NSLog打印时，不论是Debug模式还是Release模式，均会打印出来，并且无法找到是哪个类哪个方法，如下方式可参考解决这两个问题。#ifdefDEBUG#defineDLog(fmt,...)NSLog((@"%s[Line%d]"fmt),__PRETTY_FUNCTION__,__LINE__,##__VA_ARGS__);#else#defineDLog(fmt,...)#endif测试，在CViewController.m文件中代码：DLog(@"load %d", 3);打印结果：2014-01-0809:25:11.589Prot 阅读全文

posted @ 2014-01-08 09:26 trako 阅读(178) 评论(0) 推荐(0)

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