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首先必须将文件加入Xcode工程的Resources目录。然后可以如下访问文件,假设文件为MyFile.txt: NSString *filePath = [[NSBundle mainBundle] pathForResource:@"MyFile" ofType:@"txt"]; NSData *myData = [NSData dataWithContentsOfFile:filePath]; if (myData) { // do something useful }    一段将help文本文件读 ...
- (void) applicationDidFinishLaunching: { NSTimer *_timer = [[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(onTimer) userInfo:nil repeats:YES] retain]; } // call function when time is up (in this exemple :1 second. to change it, change scheduledTimerWithTimeInterval ...

UIApplication

1, statusBar //to obtain the statusBar frame [[UIApplication sharedApplication] statusBarFrame]; //hidden statusBar [[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO]; //when you app will run at crosswise ,if you want hidden statusBar, you must do this ...
// // ActivityView.h // // Copyright 2010. All rights reserved. // #import <UIKit/UIKit.h> #define kAnimationDurationStart 2 #define kAnimationDurationEnd 1 @interface ActivityView : NSObject { IBOutlet UILabel *messageLabel; IBOutlet UIView *view; BOOL isShow; } ...
UIButton *BackBtn = [[UIButton alloc] initWithFrame:CGRectMake(0.0, 100.0, 62.0, 29.0)]; [BackBtn setImage:[UIImage imageNamed:@"BackBtn.png"] forState:UIControlStateNormal]; [BackBtn addTarget:self action:@selector(BackAction:) forControlEvents:UIControlEventTouchUpInside]; UIBarBut ...
NavigationBar.topItem.title = @""; NavigationBar.topItem.leftBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(BtnPressed:)] autorelease];  
//navigationBar通常只有左、右两个按钮,但可以 //通过添加UISegmentedControl来增加控制按钮 UINavigationBar* _navBar; UISegmentedControl* _SegCtl; _navBar = [[UINavigationBar alloc] initWithFrame: CGRectMake(0.0f, 0.0f, 320.0f, 40.0f)]; [_navBar showButtonsWithLeftTitle: @"Done" rightTitle:NULL leftBack: TRUE] ...
UIImage *image = [UIImage imageNamed:@"历史标题.png"]; UIImageView *imageView = [[UIImageView alloc] initWithImage:image]; [self.navigationController.navigationBar addSubview:ImageView];  
更改cell选中的背景   Java代码 //创建一个UIView对象     UIView *myview = [[UIView alloc] init];    //设置UIView对象的外观大小     myview.frame = CGRectMake(0, 0, 320, 47);     //设置UIView对象的背景色。 [UIColor colorWithPatternImage:[UIImage imageNamed:@"0006.png"]] 从图片中创建颜色        myview.backgroun ...
今天在做开发的时候,忽然发现在视图的viewWillAppear:方法中添加: [self.tableView reloadData];  不起作用,viewWillAppear:这个方法根本没有调用 后来发现原来用了UINavigationController后,viewWillAppear方法是没有效果的,要用UINavigationControllerDelegate的– navigationController:willShowViewController:animated:方法才可以达到这个目的。 所以要做到这个,你必须做以下几步: 1. 设置代理类 nav.deleg ...
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