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ios作品－东风标致408

2011-05-16T03:19:00Z

ios开发基础知识－ 2

2011-01-13T01:58:00Z

移动物体

CABasicAnimation *theAnimation;    
theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
theAnimation.duration=1;
theAnimation.repeatCount=2;
theAnimation.autoreverses=YES;
theAnimation.fromValue=[NSNumber numberWithFloat:0];
theAnimation.toValue=[NSNumber numberWithFloat:-60];
[view.layer addAnimation:theAnimation forKey:@"animateLayer"];

参考：

Field Key Path	Description
rotation.x	The rotation, in radians, in the x axis.
rotation.y	The rotation, in radians, in the y axis.
rotation.z	The rotation, in radians, in the z axis.
rotation	The rotation, in radians, in the z axis. This is identical to setting the rotation.z field.
scale.x	Scale factor for the x axis.
scale.y	Scale factor for the y axis.
scale.z	Scale factor for the z axis.
scale	Average of all three scale factors.
translation.x	Translate in the x axis.
translation.y	Translate in the y axis.
translation.z	Translate in the z axis.
translation	Translate in the x and y axis. Value is an NSSize or CGSize.

访问别的类的属性或者方法

myAppDelegate *appDelegate
     = (myAppDelegate *)[[UIApplication sharedApplication] delegate];
[[[appDelegate rootViewController] flipsideViewController] myMethod];

遍历子视图

for (UIImageView *anImage in [self.view subviews]) {
     if (anImage.tag == 1) {
          // do something
     }
}

播放音乐

// 设置音乐文件路径
path = [[NSBundle mainBundle] pathForResource:@"mani" ofType:@"mp3"];

	// 判断是否可以访问这个文件
if ([[NSFileManager defaultManager] fileExistsAtPath:path]) 
{    
		// 设置 player
	player = [[AVAudioPlayer alloc] initWithContentsOfURL:
			  [NSURL fileURLWithPath:path] error:nil];
	
		// 调节音量 (范围从0到1)
	player.volume = 0.4f;
	
		// 准备buffer，减少播放延时的时间      
	[player prepareToPlay];
	
		// 设置播放次数，0为播放一次，负数为循环播放
	[player setNumberOfLoops:-1];
	
	[player play];    
	
}

随机数

rand()

例：

[_cloud02 setFrame:CGRectMake(-1024+rand()%600, -768+rand()%300, 2048, 1536)];
[_cloud01 setFrame:CGRectMake(-1024+rand()%600, -768+rand()%300, 2048, 1536)];

Timer

每秒调用

[NSTimer scheduledTimerWithTimeInterval:1
     target:self
     selector:@selector(myMethod)
     userInfo:nil
     repeats:YES];

如果需要传递参数的话：

[NSTimer scheduledTimerWithTimeInterval:1     target:self
     selector:@selector(myMethod)
     userInfo:myObject
     repeats:YES];

-(void)myMethod:(NSTimer*)timer {
     // Now I can access all the properties and methods of myObject
     [[timer userInfo] myObjectMethod];
}

停止Timer

[myTimer invalidate]; 
myTimer = nil;

时间

CFAbsoluteTime myCurrentTime = CFAbsoluteTimeGetCurrent();

在模拟器里测试 App 的加速度感应功能

在模拟器里可以用鼠标点击模拟 iPhone 的触摸操作，但重力感应（比如用户倾斜机身来操控飞机/赛车）怎么模拟？按住 command 再按左右方向键，就能在电脑模拟器上测试加速度感应了。

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ios开发基础知识－ 1

2011-01-13T01:58:00Z

输出

command＋shift＋r

NSLog(@"log: %@ ", myString); 
NSLog(@"log: %f ", myFloat); 
NSLog(@"log: %i ", myInt);

显示图片

CGRect myImageRect = CGRectMake(0.0f, 0.0f, 320.0f, 100.0f); 
UIImageView *myImage = [[UIImageView alloc] initWithFrame:myImageRect]; 
[myImage setImage:[UIImage imageNamed:@"myImage.png"]]; 
[self.view addSubview:myImage]; 
[myImage release];

app frame 大小

CGRect bounds = [[UIScreen mainScreen] bounds];
CGRect frame = [UIScreen mainScreen].applicationFrame;

浏览器控件

CGRect webFrame = CGRectMake(0.0, 0.0, 320.0, 480.0);
UIWebView *webView = [[UIWebView alloc] initWithFrame:webFrame];
[webView setBackgroundColor:[UIColor clearColor]];
NSString *urlAddress = @"http://nasa.cnblogs.com";
NSURL *url = [NSURL URLWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webView loadRequest:requestObj];
[self addSubview:webView];
[webView release];

在状态栏显示网络状态

UIApplication* app = [UIApplication sharedApplication];
app.networkActivityIndicatorVisible = YES;

播放序列动画

NSArray *myImages = [NSArray arrayWithObjects:
					 [UIImage imageNamed:@"myImage1.png"],
					 [UIImage imageNamed:@"myImage2.png"],
					 [UIImage imageNamed:@"myImage3.png"],
					 [UIImage imageNamed:@"myImage4.gif"],
					 nil];

UIImageView *myAnimatedView = [UIImageView alloc];
[myAnimatedView initWithFrame:[self bounds]];
myAnimatedView.animationImages = myImages;
myAnimatedView.animationDuration = 0.25; // 秒
myAnimatedView.animationRepeatCount = 0; // 0 = 无限
[myAnimatedView startAnimating];
[self addSubview:myAnimatedView];
[myAnimatedView release];

提示筐

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Alert!"          
						delegate:self cancelButtonTitle:@"OK" 
									  otherButtonTitles:nil];
[alert show];
[alert release];

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iTunes Contact无Manage Your In App Purchases链接

2010-11-17T02:04:00Z

iTunes Contact如果无Manage Your In App Purchases链接，很大的可能是你没有完善个人的银行信息。

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为UINavigationBar添加自定义背景

2010-11-08T10:21:00Z

@implementation UINavigationBar (UINavigationBarCategory)
- (void)drawRect:(CGRect)rect {
	//颜色填充
//	UIColor *color = [UIColor redColor];
//	CGContextRef context = UIGraphicsGetCurrentContext();
//	CGContextSetFillColor(context, CGColorGetComponents( [color CGColor]));
//	CGContextFillRect(context, rect);
//	self.tintColor = color;
	//图片填充
	UIColor *color = [UIColor colorWithRed:46.0f/255.0f green:87.0f/255.0f blue:29.0f/255.0f alpha:1.0f];
	UIImage *img	= [UIImage imageNamed: @"bg.png"];
	[img drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
	self.tintColor = color;
}
@end

图示：

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windows phone 7 之 7分钟教学视频

2010-10-18T03:40:00Z

整理自 http://www.msdev.com/

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UITextView自动滚动的解决方案

2010-10-14T08:40:00Z

思路：UIView加载完成3后，用NSTimer结合setContentOffset将UITextView向下滚动1像素。在滚动到底部的时候停止NSTimer。每当手动滚动UITextView前销毁NSTimer，滚动后重新创建NSTimer。

NSTimer *timer;
- (void)viewDidLoad {
	[self performSelector:@selector(resetText) withObject:nil afterDelay:3.0f];
}

- (void)resetText {	
	[timer invalidate];
	timer = nil;
	timer = [NSTimer scheduledTimerWithTimeInterval: 0.06
											 target: self
										   selector:@selector(onTick:)
										   userInfo: nil repeats:YES];
}

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
	[timer invalidate];
	timer = nil;
	NSLog(@"scrollViewWillBeginDragging");
	[self performSelector:@selector(resetText) withObject:nil afterDelay:3.0f];
}
- (void) onTick:(NSTimer*)theTimer {
	CGPoint pt = [textView contentOffset];
	CGFloat n = pt.y + 1;
	[textView setContentOffset:CGPointMake(pt.x, n)];	
	if (n> (textView.contentSize.height-textView.bounds.size.height)) {
		[theTimer invalidate];
		theTimer = nil;
		[timer invalidate];
		timer = nil;
	}
}

最后不要忘了实现

UIScrollViewDelegate

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UIScrollView无法响应touches的解决方法

2010-10-14T08:29:00Z

自定义一个类继承UIScrollView，将touchesEnded事件发送出去。

#import <Foundation/Foundation.h>


@interface PageScrollView : UIScrollView {

}

@end

#import "PageScrollView.h"


@implementation PageScrollView
- (void) touchesEnded: (NSSet *) touches withEvent: (UIEvent *) event {
	
	if (!self.dragging) {
		[self.nextResponder touchesEnded: touches withEvent:event]; 
	}		
	[super touchesEnded: touches withEvent: event];
}

@end

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TheFWA上的silverlight酷站

2010-09-21T00:39:00Z

FWA全称Favourite Website Awards，是一个世界著名的互动多媒体网站收录平台，于2000年5月建立，目的是展示世界上最优秀、最前沿的网络媒体艺术设计作品。FWA一直被列为世界上最顶级、最具有精英意义的评价网络媒体交互艺术创作的权威机构，其收录的作品也不断成为备受追捧的创意科技标杆。　　

FWA每日收录一个互动站点，月度年度评选最佳。凡是被收录的站点都会被光荣的授以FWA角标，这是国内外无数设计师与互动网站开发机构梦寐以求的标识。

网址：http://www.rememberreach.com/

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