我有以下代碼來讀取.txt文件並將其放入一個字符串用於NSScanner。爲什麼我的NSString不能讀取我的.txt文件?
NSString *Period1String = [[NSBundle mainBundle] pathForResource: @"Period1String" ofType: @"txt"];
NSString *Period2String = [[NSBundle mainBundle] pathForResource: @"Period2String" ofType: @"txt"];
NSString *Period3String = [[NSBundle mainBundle] pathForResource: @"Period3String" ofType: @"txt"];
NSString *Period4String = [[NSBundle mainBundle] pathForResource: @"Period4String" ofType: @"txt"];
NSString *Period5String = [[NSBundle mainBundle] pathForResource: @"Period5String" ofType: @"txt"];
NSURL *requestTimetableURL = [NSURL URLWithString:@"http://www.dhsb.org/index.phtml?d=201435"];
NSLog(@"Loaded Timetable");
NSError *loaderror;
NSString *page = [NSString stringWithContentsOfURL:requestTimetableURL
encoding:NSASCIIStringEncoding
error:&loaderror];
[webView loadHTMLString:page baseURL:requestTimetableURL];
NSString* Period1;
NSScanner *htmlScanner = [NSScanner scannerWithString:page];
[htmlScanner scanUpToString:Period1String intoString:NULL];
[htmlScanner scanString:Period1String intoString:NULL];
[htmlScanner scanUpToString:@"</FONT>" intoString:&Period1];
period1label.text= Period1;
NSLog(@"Collected Period 1 Data: %@", Period1);
NSScanner *htmlScanner2 = [NSScanner scannerWithString:page];
NSString* Period2;
[htmlScanner2 scanUpToString:Period2String intoString:NULL];
[htmlScanner2 scanString:Period2String intoString:NULL];
[htmlScanner2 scanUpToString:@"</FONT>" intoString:&Period2];
period2label.text= Period2;
NSLog(@"Collected Period 2 Data: %@", Period2);
NSScanner *htmlScanner3 = [NSScanner scannerWithString:page];
NSString* Period3;
[htmlScanner3 scanUpToString:Period3String intoString:NULL];
[htmlScanner3 scanString:Period3String intoString:NULL];
[htmlScanner3 scanUpToString:@"</FONT>" intoString:&Period3];
period3label.text= Period3;
NSLog(@"Collected Period 3 Data: %@", Period3);
NSScanner *htmlScanner4 = [NSScanner scannerWithString:page];
NSString* Period4;
[htmlScanner4 scanUpToString:Period4String intoString:NULL];
[htmlScanner4 scanString:Period4String intoString:NULL];
[htmlScanner4 scanUpToString:@"</FONT>" intoString:&Period4];
period4label.text= Period4;
NSLog(@"Collected Period 4 Data: %@", Period4);
NSScanner *htmlScanner5 = [NSScanner scannerWithString:page];
NSString* Period5;
[htmlScanner5 scanUpToString:Period5String intoString:NULL];
[htmlScanner5 scanString:Period5String intoString:NULL];
[htmlScanner5 scanUpToString:@"</FONT>" intoString:&Period5];
period5label.text = Period5;
NSLog(@"Collected Period 5 Data: %@", Period5);
但是,當按鈕被按下時,所有這些都會發生,所有的字符串(空)。每個文本文件 應該完全正常工作,因爲他們已經爲我的應用程序的其他部分工作。
有沒有更好的方法,我應該這樣做,或者我可以改進目前的這種方法來獲得我期待的結果?
感謝
如果我爲Period1Label,Period2Label,Period3Label,Period4Label和Period5Label做一個NSLog語句 - 那麼這會發生什麼:http://pastie.org/2951134 – pixelbitlabs