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iphone 读取 一行文件内…

2013-12-20 13:00 295 查看
第一种:
NSStringEncoding encoder =
NSUTF8StringEncoding;
NSString *file = [NSString
stringWithContentsOfFile:@"/Users/bjimac/Desktop/528.edl"
usedEncoding:&encoder
error:nil];
NSRange line;
line.location = 0;
line.length = 1;
 
int length = [file length];
 
while (line.location
<= length)
{
NSRange newLine = [file
lineRangeForRange:line];
NSString *content = [file
substringWithRange:newLine];
line.length = 1;
line.location = newLine.location +
newLine.length + 1;
}
 
- (NSString
*)substringWithRange:(NSRange)aRange －－－－该函数会返回包含aRange的行
 
所以上面代码中content就得到每一行的内容了。
 
第二种:
 
 
读取一般性文档文件
 
NSString *tmp;
NSArray *lines;
lines = [[NSString  
 stringWithContentsOfFile:@"testFileReadLines.txt"]

componentsSeparatedByString:@"\n"];
 
NSEnumerator *nse = [lines
objectEnumerator];
 
//
读取<>里的内容
while(tmp = [nse nextObject]) {
NSString *stringBetweenBrackets =
nil;
NSScanner *scanner = [NSScanner
scannerWithString:tmp];
[scanner
scanUpToString:@"<" intoString:nil];
[scanner
scanString:@"<" intoString:nil];
[scanner
scanUpToString:@">"
intoString:&stringBetweenBrackets];
NSLog([stringBetweenBrackets
description]);
}

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