博客园_Kaixuan

iOS设备内存及分辨率

2012-05-04T09:44:00Z

列举了iOS设备(iPhone, iPad, iTouch)的内存及分辨率配置，记下方便以后查看。

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测试显示GitHub的Gist

2012-04-17T09:24:00Z

2012-04-17T09:24:00Z2012-04-17T09:24:00Z1901http://www.cnblogs.com/kaixuan/

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使用GTMBase64编码解码字符串

2012-04-10T04:40:00Z

使用GTMBase64需要在工程中加入三个文件

GTMDefines.h
GTMBase64.h
GTMBase64.m

你可以在这里找到这三个文件
http://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/?r=87

示例代码：

#import "GTMBase64.h"

- (void)testExample
{
NSData *data = [@"HelloWorld" dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSString* encoded = [[NSString alloc] initWithData:[GTMBase64 encodeData:data] encoding:NSUTF8StringEncoding];
NSLog(@"encoded:%@", encoded);
NSString* decoded = [[NSString alloc] initWithData:[GTMBase64 decodeString:encoded] encoding:NSUTF8StringEncoding];
NSLog(@"decoded:%@", decoded);
[encoded release];
[decoded release];
}

输出：

2012-04-10 12:13:10.121 fs_test[7370:b603] encoded:SGVsbG9Xb3JsZA==
2012-04-10 12:13:10.122 fs_test[7370:b603] decoded:HelloWorld

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颜色转换工具

2011-06-29T12:25:00Z

最近在做Objective-C的开发，发现在Objective-C中使用UIColor生成颜色需要的参数不是我们一般使用的0-255和十六进制表示方法，而是0-1的小数表示方式(如：UIColor* color = [UIColor colorWithRed:0.79 green:0.87 blue:0.91 alpha:1];)，很不习惯，所以用flash写了个转换的小工具放上来以便有需要的朋友使用。

补发两个在Objective-C中取颜色的宏：

//RGB color macro
#define UIColorFromRGB(rgbValue) [UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \
green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \
blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

//RGB color macro with alpha
#define UIColorFromRGBWithAlpha(rgbValue,a) [UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \
green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \
blue:((float)(rgbValue & 0xFF))/255.0 alpha:a]

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先随便记一下

2011-06-15T04:32:00Z

/** ===== NSString ===== */
NSString* string = @"hello, 1901";
NSLog(@"string retainCount: %lu", [string retainCount]);
// output: string retainCount: 1152921504606846975

NSString* string = [[NSString alloc] initWithString:@"hello, 1901"];
NSLog(@"string retainCount: %lu", [string retainCount]);
// output: string retainCount: 1152921504606846975

NSString* string = [[NSString alloc] initWithFormat:@"%@", @"hello, 1901"];
NSLog(@"string retainCount: %lu", [string retainCount]);
// output: string retainCount: 1

NSString* string = [[NSString alloc] initWithUTF8String:"hello, 1901"];
NSLog(@"string retainCount: %lu", [string retainCount]);
// output: string retainCount: 1

/** ===== NSMutableArray & NSArray ===== */
NSMutableArray* array = [[NSMutableArray alloc] init];
NSLog(@"array retainCount: %lu", [array retainCount]);
// array retainCount: 1

NSArray* array = [[NSArray alloc] init];
NSLog(@"array retainCount: %lu", [array retainCount]);
// output: array retainCount: 2

NSArray* array = [[NSArray alloc] initWithObjects:@"hello, 1901", nil];
NSLog(@"array retainCount: %lu", [array retainCount]);
// output: array retainCount: 1

NSArray* array1 = [[NSArray alloc] init];
NSLog(@"array1 retainCount: %p", array1);
NSArray* array2 = [[NSArray alloc] init];
NSLog(@"array2 retainCount: %p", array2);
NSArray* array3 = [[NSArray alloc] init];
NSLog(@"array3 retainCount: %p", array3);
/*
output:
array1 retainCount: 0x10010d050
array2 retainCount: 0x10010d050
array3 retainCount: 0x10010d050
*/

NSString* string = [NSString stringWithUTF8String:"hello, 1901"];
NSArray* array1 = [[NSArray alloc] initWithObjects:string, nil];
NSLog(@"array1 retainCount: %p", array1);
NSArray* array2 = [[NSArray alloc] initWithObjects:string, nil];
NSLog(@"array2 retainCount: %p", array2);
/*
output:
array1 retainCount: 0x1001107c0
array2 retainCount: 0x100110840
*/

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iOS中获取程序相关的一些目录路径

2011-05-31T08:15:00Z

// 获取程序Documents目录路径
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

// 获取程序app文件所在目录路径
NSHomeDirectory();

// 获取程序tmp目录路径
NSTemporaryDirectory();

// 获取程序应用包路径
[[NSBundle mainBundle] resourcePath];
或
[[NSBundle mainBundle] pathForResource: @"info" ofType: @"txt"];

另外对于文件一些主要操作主要是通过NSFileManage 来完成，可以通过 [NSFileManger defaultManger] 得到它得实例。

如：创建目录、重命名文件、获取目录下的文件名、删除文件、删除目录等。

其他：

在使用的时候我准备向NSHomeDirectory()获取到的目录中写一个文件但是失败了。

后来写到Documents目录中了，不知道是iOS的限制还是什么，文件不能写到NSHomeDirectory()目录下。

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mac字典词库增加方法

2011-05-26T15:19:00Z

1、使用方法

http://mac.linsheng.me/archives/309.html

2、工具下载

http://code.google.com/p/mac-dictionary-kit/

3、词库下载

http://yeelou.com/huzheng/stardict-dic/zh_CN/

4、安装

使用方法一文中使用的是1.0版本的安装工具，具体安装方法可以参见此链接的文章。

我下载的是2.0的版本，安装方法很简单，将下载的词库(不用解压)直接拖入工具的窗口上，等待词库安装完毕即可。

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Google的Logo记现代舞先驱玛莎·葛兰姆117周年诞辰-Flash版

2011-05-12T06:07:00Z

Google的这个logo看着感觉很不错，google官方是用CSS+Javascript实现的，后来看博客园的很多朋友也照着实现了（其中一个），于是我用AS3实现了一个flash版的。其实我觉得牛的不是这个技术，而是这个动画的动作设计很棒。

效果预览：

图片下载：

直接另存为下载，如果链接失效，可从底部下载源码，源码中也包含此图片。

实现代码：

package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.geom.Point;
import flash.geom.Rectangle;

[SWF(backgroundColor=0xffffff, width="420", height="160", frameRate="16")]
public class google_logo_20110511 extends Sprite
{
private var animationInfo:Array = [
[307,48,88,89,0,0],
[307,48,89,89,88,0],
[307,48,91,89,177,0],
[305,49,93,89,268,0],
[305,50,93,88,361,0],
[305,50,93,88,454,0],
[306,52,92,86,547,0],
[305,53,93,84,639,0],
[305,54,94,83,732,0],
[306,54,93,83,826,0],
[307,54,92,83,919,0],
[307,54,92,83,1011,0],
[308,54,90,83,1103,0],
[308,54,90,83,1193,0],
[306,53,91,84,1283,0],
[306,53,91,84,1374,0],
[308,53,90,84,1465,0],
[308,53,90,84,1555,0],
[305,53,92,84,1645,0],
[305,52,92,85,1737,0],
[306,52,91,85,1829,0],
[308,51,88,87,1920,0],
[308,50,88,88,0,89],
[308,49,88,88,88,89],
[307,49,89,88,176,89],
[307,50,89,87,265,89],
[308,51,89,86,354,89],
[307,54,90,83,443,89],
[307,57,90,80,533,89],
[306,58,92,79,623,89],
[306,58,92,79,715,89],
[305,60,92,77,807,89],
[302,61,95,76,899,89],
[302,63,95,74,994,89],
[302,51,96,86,1089,89],
[302,66,98,71,1185,89],
[304,67,96,69,1283,89],
[301,63,96,74,1379,89],
[301,58,93,79,1475,89],
[291,52,94,85,1568,89],
[288,50,71,88,1662,89],
[285,43,76,95,1733,89],
[285,37,70,101,1809,89],
[281,29,55,109,1879,89],
[278,20,58,119,1934,89],
[278,20,55,119,1992,89],
[277,12,121,127,0,208],
[271,2,122,138,121,208],
[267,1,126,139,243,208],
[264,0,136,140,369,208],
[260,0,141,140,505,208],
[255,0,148,140,646,208],
[252,0,151,140,794,208],
[249,2,121,138,945,208],
[247,3,123,137,1066,208],
[246,3,123,137,1189,208],
[246,2,124,137,1312,208],
[258,2,112,137,1436,208],
[263,2,106,137,1548,208],
[263,2,106,137,1654,208],
[262,2,103,137,1760,208],
[260,2,104,136,1863,208],
[260,2,104,137,1967,208],
[268,2,98,137,0,348],
[267,2,99,137,98,348],
[266,2,97,137,197,348],
[266,3,96,136,294,348],
[264,3,99,136,390,348],
[263,3,100,136,489,348],
[261,3,100,136,589,348],
[259,2,138,137,689,348],
[254,2,126,137,827,348],
[247,2,101,136,953,348],
[240,2,108,136,1054,348],
[238,1,110,137,1162,348],
[230,1,118,138,1272,348],
[220,15,128,124,1390,348],
[211,18,137,121,1518,348],
[205,43,102,96,1655,348],
[202,45,104,93,1757,348],
[200,38,97,101,1861,348],
[198,38,104,101,1958,348],
[197,39,107,100,0,486],
[197,39,112,100,107,486],
[213,39,94,110,219,486],
[212,40,95,111,313,486],
[211,41,97,111,408,486],
[209,42,99,112,505,486],
[209,43,98,112,604,486],
[213,43,87,112,702,486],
[213,42,83,113,789,486],
[211,40,86,109,872,486],
[211,38,86,103,958,486],
[211,37,88,112,1044,486],
[211,20,186,131,1132,486],
[213,27,167,122,1318,486],
[212,44,87,105,1485,486],
[210,44,88,98,1572,486],
[195,44,106,98,1660,486],
[189,44,110,98,1766,486],
[182,46,117,99,1876,486],
[173,44,118,96,1993,486],
[161,43,130,99,0,617],
[154,42,137,97,130,617],
[153,42,137,97,267,617],
[153,42,137,97,404,617],
[152,41,137,98,541,617],
[151,41,137,97,678,617],
[149,41,145,97,815,617],
[148,25,144,114,960,617],
[148,13,144,126,1104,617],
[141,12,153,127,1248,617],
[115,11,173,128,1401,617],
[108,7,180,133,1574,617],
[108,4,180,136,1754,617],
[108,3,176,137,1934,617],
[108,1,161,139,0,754],
[105,1,235,138,161,754],
[103,1,295,148,396,754],
[103,0,277,149,691,754],
[108,0,234,137,968,754],
[101,0,232,137,1202,754],
[99,0,135,139,1434,754],
[95,0,244,139,1569,754],
[81,0,152,139,1813,754],
[69,0,164,139,1965,754],
[66,0,169,139,0,903],
[65,0,170,139,169,903],
[63,0,168,138,339,903],
[61,0,159,138,507,903],
[35,0,304,139,666,903],
[19,0,189,140,970,903],
[18,11,138,129,1159,903],
[18,11,137,129,1297,903],
[18,11,137,128,1434,903],
[18,6,135,133,1571,903],
[7,4,146,136,1706,903],
[6,4,147,136,1852,903],
[3,4,150,136,1999,903],
[3,5,150,135,0,1043],
[3,8,150,132,150,1043],
[4,6,394,145,300,1043],
[12,6,388,145,694,1043],
[11,8,389,144,1082,1043],
[11,8,387,144,1471,1043],
[11,8,387,143,1858,1043],
[10,8,113,131,0,1188],
[11,8,111,131,113,1188],
[10,9,112,130,224,1188],
[12,9,116,130,336,1188],
[12,9,111,130,452,1188],
[12,9,111,130,563,1188],
[12,9,110,131,674,1188],
[12,34,113,106,784,1188],
[13,35,110,104,897,1188]
];

[Embed(source="google_logo.png")]
private var logo:Class;
private var mcs:Array= [];
private var playIndex:int= 0;

public function google_logo_20110511()
{
this.stage.scaleMode = StageScaleMode.NO_SCALE;

var logoBitmap:Bitmap = new logo();

for each(var info:Array in animationInfo)
{
var bitmap:Bitmap = getBitmapFromBitmapData(logoBitmap.bitmapData,
info[4],
info[5],
info[2],
info[3]);

var mc:MovieClip = new MovieClip();
mc.addChild(bitmap);
mc.x = info[0];
mc.y = info[1];

mcs.push(mc);
}

this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
}

private function onEnterFrame(event:Event):void
{
if(playIndex < mcs.length)
{
var mc:MovieClip = mcs[playIndex] as MovieClip;
addChild(mc);
playIndex++;
}
else
{
this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
}

private function getBitmapFromBitmapData(bitmapData:BitmapData, x:int, y:int, width:int, height:int):Bitmap
{
var bitmap:Bitmap = new Bitmap();
bitmap.bitmapData = new BitmapData(width, height);

bitmap.bitmapData.copyPixels(bitmapData,
new Rectangle(x, y, width, height),
new Point(0, 0));

return bitmap;
}
}
}

最后说明一下代码中数组的数据来源于: http://www.cnblogs.com/eric6/archive/2011/05/11/2043327.html

源码下载（源码中包含图片文件）

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关于flash加载flash时的缩放和位置问题

2011-04-12T07:30:00Z

在做flash开发的时候经常会遇到需要加载外部的其它flash，在加载的时候有可能会出现各种各样的问题，如加载进来的flash会自动缩放或者不会自动缩放或者缩放的方式不对，总之跟你想样的效果就是不一样。又或者加载进来的flash位置不始终不动，设置x和y坐标也不能把它定位到你想要的位置上。如果碰到以上问题时，建议看下下面两篇文章，相信你的疑惑会随之解除。

最后感谢下原文作者的经验分享。

Set Registration point in AS3
http://flashscript.ca/set-registration-as3.php

Stretch Your SWF with Stage.ScaleMode
http://active.tutsplus.com/tutorials/actionscript/quick-tip-stretch-your-swf-with-stage-scalemode/

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给力壁纸 for mac

2011-04-11T13:08:00Z

近日在小众软件得知到一个网站，http://www.wordsmotivate.me/，网站名字很有特点-给力壁纸。
他网站上的壁纸也的确很给力，每日以日志形式更新一副，每副壁纸上都有一句给力的文字。
并且在windows下提供了一个软件，可以自动检测更新并应用为桌面壁纸，linux也提供了一个脚本，唯独没有MAC版的。
所以自己写了个小工具，每天开机下载最新给力壁纸并设为桌面（已得到给力站长允许），然后软件自动退出，功能比较简单，就没有做任何界面。

这个小程序有以下三个特点：
1、因为这个程序每天的工作时间大概也就5秒钟，所以我没有做成常驻内存的程序，程序工作完后会自动退出。
2、因为程序工作完就会自动退出，所以你没法通过程序设置任何选项，因此程序本身没有开机启动功能。

3、因为程序没有任何设置选项，所以程序也没有任何界面。

4、壁纸保存路径在~/Pictures/1901/目录。

【附件下载】

建议通过MAC系统自带的登录项解决开机启动功能，如果哪天你不想用它了，直接从登录项中删除它即可。
不会设置开机启动就跟着下面图片的步骤操作吧！

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