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大部分的时候NSString的属性都是copy,那copy与strong的情况下到底有什么区别呢? 比如: @property (retain,nonatomic) NSString *rStr; @property (copy, nonatomic) NSString *cStr; - (void)test: { NSMutableString *mStr = [NSMutableStrin...

你的基本类型,假设 NSInteger dcm = 10; 相应的字符串为 NSString *str = [NSString stringWithFormat:@"zd%",dcm];

代码如下: NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateStyle:NSDateFormatterMediumStyle]; [dateFormatter setTimeStyle:NSDateFormatterNoStyle]; [dateFormatter setTimeZone:GTMzone]; NSDa...

NSURL *url ... NSString *urlStr = url.absoluteString;

NSString *string = @"qwer"; NSMutableString *newString = [[NSMutableString alloc] initWithCapacity:string.length]; for (int i = string.length - 1; i >=0 ; i --) { unichar ch = [string characterAtIndex:i]; [newString appendForma...

1、NSData 转NSString NSString *result =[[ NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; 2、字符串转Data NSString *str =@"jesfds"; NSData *data =[str dataUsingEncoding:NSUTF8StringEncoding];

iOS 7 containsstring的实现方法如下: - (BOOL)containsString:(NSString *)aString NS_AVAILABLE(10_10, 8_0){ if (IS_BLANK_STRING(aString)) { return NO; } if ([self rangeOfString:aString].location != NSNotFound) { return YES; } ret...

/*! * @brief 把格式化的JSON格式的字符串转换成字典 * @param jsonString JSON格式的字符串 * @return 返回字典 */+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString { if (jsonString == nil) { return nil; } NSData *json...

1, 创建一个NSString对象 简单方法: NSString *aString = @"我是个NS字符串!"; //除了引号外加@, 没别的区别不需要操心内存管理 NSString *aString = [[NSString alloc] initWithFormat:@"这也是个NS字符串!"];//要去retain和release这个字符...

假设要查询的字符串味: NSString *searchStr = @"a string with substr"; 查询(是否)被包含的字符串为@"substr",则通过下面的判断: if ([searchStr rangeOfString:@"substr"].location != NSNotFound) { //条件为真,表示字符串searchStr包...

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