11、iphone中變數值是否等於字串的判斷方法:
objective-c**
[string1 isequaltostring:@
"123 "
];
12、iphone的framework的目錄:
mac---developer---platforms---iphoneos.platform---developer---sdks---iphoneos3.1.3.sdk---system---library---frameworks
13、在iphone中設定googlemap的經緯度:
objective-c**
cllocationcoordinate2d centercoordinate;
centercoordinate.latitude = 39.9097;
centercoordinate.longitude = 105.3476;
mkcoordinatespan span;
span.latitudedelta = 30;
span.longitudedelta = 30;
mkcoordinateregion region;
region.center = centercoordinate;
region.span = span;
[mapview setregion:region animated:true];
14、翻頁過渡效果:
objective-c**
- (ibaction)backtomenus:(id)sender
15、fathercontroller的寫法:
objective-c**
在.h中:
#import "databasevc.h"
@class
databasevc;
databasevc *databasevc;
在.m中:
databasevc = [[databasevc alloc] init];
16、將nsdata型別的資料轉換成nsstring:
objective-c**
nsstring *thexml = [[nsstring alloc] initwithbytes: [webdata mutablebytes] length:[webdata length] encoding:nsutf8stringencoding];
//webdata為nsdata型別
17、將nsstring型別的資料轉換成nsdata:
objective-c**
nsdata *webdata = [nsmutabledata datawithbytes:[thexml utf8string] length:[thexml length]];;
//thexml為nsstring型別
18、將特殊字元轉義:
objective-c**
nsstring *str2 = [str1 stringbyaddingpercentescapesusingencoding:nsutf8stringencoding];
objective-c**
在p-list中新增如下內容:
sbusesnetwork 3
objective-c**
nsdateformatter *formatter = [[nsdateformatter alloc] init];
[formatter setdateformat:@"yyyymmddhhmmss"
];
nsstring *locationstring=[formatter stringfromdate: [nsdate date]];
iphone開發筆記
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11 iphone中變數值是否等於字串的判斷方法 objective c string1 isequaltostring 123 12 iphone的framework的目錄 mac developer platforms iphoneos.platform developer sdks iphon...