【移动应用开发技术】iOS开发常用的宏

【移动应用开发技术】iOS开发常用的宏

作为一名开发人员，在开发过程中如果将常用的代码收集起来，添加到Xcode的代码片库里，通过快捷键直接使用，从而提高开发效率；或者封装为宏或封装在一个类中，可提高代码的复用性。1）将常用代码片段封装成一个类里

当一个代码片在一个或多个工程之中经常出现时，把他封装在一个类里面，在使用时候直接传参即可实现对应功能，或者直接把这个类放到另一个工程中同样使用。#defineNavigationBar_HEIGHT44

#defineSCREEN_WIDTH([UIScreenmainScreen].bounds.size.width)

#defineSCREEN_HEIGHT([UIScreenmainScreen].bounds.size.height)

#defineSAFE_RELEASE(x)[xrelease];x=nil

#defineIOS_VERSION[[[UIDevicecurrentDevice]systemVersion]floatValue]

#defineCurrentSystemVersion([[UIDevicecurrentDevice]systemVersion])

#defineCurrentLanguage([[NSLocalepreferredLanguages]objectAtIndex:0])

#defineBACKGROUND_COLOR[UIColorcolorWithRed:242.0/255.0green:236.0/255.0blue:231.0/255.0alpha:1.0]

//usedlogtoprintwhileindebugmodel

#ifdefDEBUG

#defineDLog(fmt,...)NSLog((@"%s[Line%d]"fmt),__PRETTY_FUNCTION__,__LINE__,##__VA_ARGS__);

#else

#defineDLog(...)

#endif

#defineisRetina([UIScreeninstancesRespondToSelector:@selector(currentMode)]?CGSizeEqualToSize(CGSizeMake(640,960),[[UIScreenmainScreen]currentMode].size):NO)

#defineiPhone5([UIScreeninstancesRespondToSelector:@selector(currentMode)]?CGSizeEqualToSize(CGSizeMake(640,1136),[[UIScreenmainScreen]currentMode].size):NO)

#defineisPad(UI_USER_INTERFACE_IDIOM()==UIUserInterfaceIdiomPad)

#ifTARGET_OS_IPHONE

//iPhoneDevice

#endif

#ifTARGET_IPHONE_SIMULATOR

//iPhoneSimulator

#endif

//ARC

#if__has_feature(objc_arc)

//compilingwithARC

#else

//compilingwithoutARC

#endif

//G－C－D

#defineBACK(block)dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0),block)

#defineMAIN(block)dispatch_async(dispatch_get_main_queue(),block)

#defineUSER_DEFAULT[NSUserDefaultsstandardUserDefaults]

#defineImageNamed(_pointer)[UIImagep_w_picpathNamed:[UIUtilp_w_picpathName:_pointer]]

#pragmamark-commonfunctions

#defineRELEASE_SAFELY(__POINTER){[__POINTERrelease];__POINTER=nil;}

#pragmamark-degrees/radianfunctions

#definedegreesToRadian(x)(M_PI*(x)/180.0)

#defineradianToDegrees(radian)(radian*180.0)/(M_PI)

#pragmamark-colorfunctions

#defineRGBCOLOR(r,g,b)[UIColorcolorWithRed:(r)/255.0fgreen:(g)/255.0fblue:(b)/255.0falpha:1]

#defineRGBACOLOR(r,g,b,a)[UIColorcolorWithRed:(r)/255.0fgreen:(g)/255.0fblue:(b)/255.0falpha:(a)]

#defineITTDEBUG

#defineITTLOGLEVEL_INFO10

#defineITTLOGLEVEL_WARNING3

#defineITTLOGLEVEL_ERROR1

#ifndefITTMAXLOGLEVEL

#ifdefDEBUG

#defineITTMAXLOGLEVELITTLOGLEVEL_INFO

#else

#defineITTMAXLOGLEVELITTLOGLEVEL_ERROR

#endif

#endif

//Thegeneralpurposelogger.Thisignoreslogginglevels.

#ifdefITTDEBUG

#defineITTDPRINT(xx,...)NSLog(@"%s(%d):"xx,__PRETTY_FUNCTION__,__LINE__,##__VA_ARGS__)

#else

#defineITTDPRINT(xx,...)((void)0)

#endif

//Printsthecurrentmethod'sname.

#defineITTDPRINTMETHODNAME()ITTDPRINT(@"%s",__PRETTY_FUNCTION__)

//Log-levelbasedloggingmacros.

#ifITTLOGLEVEL_ERROR<=ITTMAXLOGLEVEL

#defineITTDERROR(xx,...)ITTDPRINT(xx,##__VA_ARGS__)

#else

#defineITTDERROR(xx,...)((void)0)

#endif

#ifITTLOGLEVEL_WARNING<=ITTMAXLOGLEVEL

#defineITTDWARNING(xx,...)ITTDPRINT(xx,##__VA_ARGS__)

#else

#defineITTDWARNING(xx,...)((void)0)

#endif

#ifITTLOGLEVEL_INFO<=ITTMAXLOGLEVEL

#defineITTDINFO(xx,...)ITTDPRINT(xx,##__VA_ARGS__)

#else

#defineITTDINFO(xx,...)((void)0)

#endif

#ifdefITTDEBUG

#defineITTDCONDITIONLOG(condition,xx,...){if((condition)){\

ITTDPRINT(xx,##__VA_ARGS__);\

}\

}((void)0)

#else

#defineITTDCONDITIONLOG(condition,xx,...)((void)0)

#endif

#defineITTAssert(condition,...)\

do{\

if(!(condition)){\

[[NSAssertionHandlercurrentHandler]\

handleFailureInFunction:[NSStringstringWithUTF8String:__PRETTY_FUNCTION__]\

file:[NSStringstringWithUTF8String:__FILE__]\

lineNumber:__LINE__\

description:__VA_ARGS__];\

}\

}while(0)

会员：鸡累基类鸡肋

#defineLOADIMAGE(file,ext)[UIImagep_w_picpathWithContentsOfFile:[[NSBundlemainBundle]pathForResource:fileofType:ext]]

读取本地图片的和p_w_picpathNamed一样，但是性能比后者要强很多，两个参数，前面一个是文件名，后面一个是类型

例如p_w_picpathView.p_w_picpath=LOADIMAGE(@"文件名",@"png");

会员：anglepro

#defineWIDTH[[UIScreenmainScreen]bounds].size.width

#defineHEIGHT[[UIScreenmainScreen]bounds].size.height

会员：l20061642

#defineVIEWWITHTAG(_OBJECT,_TAG)[_OBJECTviewWithTag:_TAG]

会员：pri_est

#defineMyLocal(x,...)NSLocalizedString(x,nil)

这样就不需要填默认的参数了.对于需要反复使用的方法比较方便。

比如说MyLocal(@"0094")代替了NSLocalizedString(@"0094",nil)

会员：oopp

引用第1楼鸡累基类鸡肋于2013-03-2614:58发表的:

#defineLOADIMAGE(file,ext)[UIImagep_w_picpathWithContentsOfFile:[[NSBundlemainBundle]pathForResource:fileofType:ext]]

读取本地图片的和p_w_picpathNamed一样，但是性能比后者要强很多，两个参数，前面一个是文件名，后面一个是类型

例如p_w_picpathView.p_w_picpath=LOADIMAGE(@"文件名",@"png");

在资源不吃紧的情况下,这种反而是个累赘,因为没有缓存.

p_w_picpathnamed只是说要缓存,而且无法手动清空而已.缓存是好是坏,只能自己判定.

会员：beyondvincent

//rgb颜色转换（16进制->10进制）

#defineUIColorFromRGB(rgbValue)[UIColorcolorWithRed:((float)((rgbValue&0xFF0000)>>16))/255.0green:((float)((rgbValue&0xFF00)>>8))/255.0blue:((float)(rgbValue&0xFF))/255.0alpha:1.0]

[2013.6.9更新]

会员：favormm检查系统版本

我也来一个我用过的，检查系统版本的

1.

2.#defineSYSTEM_VERSION_EQUAL_TO(v)([[[UIDevicecurrentDevice]systemVersion]compare:voptions:NSNumericSearch]==NSOrderedSame)

3.#defineSYSTEM_VERSION_GREATER_THAN(v)([[[UIDevicecurrentDevice]systemVersion]compare:voptions:NSNumericSearch]==NSOrderedDescending)

4.#defineSYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)([[[UIDevicecurrentDevice]systemVersion]compare:voptions:NSNumericSearch]!=NSOrderedAscending)

5.#defineSYSTEM_VERSION_LESS_THAN(v)([[[UIDevicecurrentDevice]systemVersion]compare:voptions:NSNumericSearch]==NSOrderedAscending)

6.#defineSYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)([[[UIDevicecurrentDevice]systemVersion]compare:voptions:NSNumericSearch]!=NSOrderedDescending)

会员：linux_fay

//清除背景色

#defineCLEARCOLOR[UIColorclearColor]

//定义UIImage对象

#defineIMAGE(A)[UIImagep_w_picpathWithContentsOfFile:[[NSBundlemainBundle]pathForResource:AofType:nil]]

//带有RGBA的颜色设置

#defineCOLOR(R,G,B,A)[UIColorcolorWithRed:R/255.0green:G/255.0blue:B/255.0alpha:A]

//方正黑体简体字体定义

#defineFONT(F)[UIFontfontWithName:@"FZHTJW--GB1-0"size:F]

//安全删除对象

#defineSAFE_DELETE(P)if(P){[Prelease],P=nil;}

//接口API

#defineAPIURL@"http://xxxxx/"

//登录

#defineAPILogin[APIURLstringByAppendingString:@"Login"]//登录API

会员：tmxk12388

//获取RGB颜色

#defineRGBA(r,g,b,a)[UIColorcolorWithRed:r/255.0fgreen:g/255.0fblue:b/255.0falpha:a]

#defineRGB(r,g,b)RGBA(r,g,b,1.0f)

会员：legnaflow