爲什麼不能將數據寫入文件

我正在嘗試將數據寫入文件，然後再次讀出。它看起來像我有正確的結構來寫它，但是當我讀它時沒有出現。有人可以看看我是否缺少一些東西。這裏是代碼片段爲什麼不能將數據寫入文件

NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 

//LOADING TITLE ONTO DEVICE/////// 
NSString *title =[NSString stringWithFormat:@"%@_title.txt",[[prodlist objectAtIndex:indexPath.row] objectForKey:@"appSKU"]]; 
DLog(@"Title = %@",title); 
NSString *titlePath = [docDir stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@",title]]; //add our title to the path 
DLog(@"Path = %@",titlePath); 
if(![[NSFileManager defaultManager] fileExistsAtPath:titlePath]) { 
    DLog(@"Content = %@",product.localizedTitle); 
    [product.localizedTitle writeToFile:descripPath atomically:NO]; 

} 
////////////////////////////////// 
//cell.AppTitle.text = product.localizedTitle; 
    DLog(@"Path1 = %@",titlePath); 
    DLog(@"Content1 = %@",[NSString stringWithContentsOfFile:titlePath encoding:NSUTF8StringEncoding error:nil]); 
cell.AppTitle.text = [NSString stringWithContentsOfFile:titlePath encoding:NSUTF8StringEncoding error:nil];

我的日誌文件指示至少對我來說，我有正確的路徑在這兩個嘗試，雖然沒有什麼似乎返回

2013-06-02 09:15:15.698 IMOB[35034:907] <MasterViewController.m:(144)> Title = app_0101_title.txt 
2013-06-02 09:15:15.699 IMOB[35034:907] <MasterViewController.m:(146)> Path = /var/mobile/Applications/1C1ACE22-25ED-47A8-98D0-50AFA0C4415E/Documents/app_0101_title.txt 
2013-06-02 09:15:15.700 IMOB[35034:907] <MasterViewController.m:(148)> Content = Relax Sleep Well Full 
2013-06-02 09:15:15.707 IMOB[35034:907] <MasterViewController.m:(161)> Path1 = /var/mobile/Applications/1C1ACE22-25ED-47A8-98D0-50AFA0C4415E/Documents/app_0101_title.txt 
2013-06-02 09:15:15.709 IMOB[35034:907] <MasterViewController.m:(162)> Content1 = (null) 
2013-06-02 09:15:15.725 IMOB[35034:907] <MasterViewController.m:(144)> Title = app_0102_title.txt 
2013-06-02 09:15:15.726 IMOB[35034:907] <MasterViewController.m:(146)> Path = /var/mobile/Applications/1C1ACE22-25ED-47A8-98D0-50AFA0C4415E/Documents/app_0102_title.txt 
2013-06-02 09:15:15.728 IMOB[35034:907] <MasterViewController.m:(148)> Content = Lose Weight Now 
2013-06-02 09:15:15.735 IMOB[35034:907] <MasterViewController.m:(161)> Path1 = /var/mobile/Applications/1C1ACE22-25ED-47A8-98D0-50AFA0C4415E/Documents/app_0102_title.txt 
2013-06-02 09:15:15.738 IMOB[35034:907] <MasterViewController.m:(162)> Content1 = (null)

來源

2013-06-02 Jeff Janes

我認爲你的'writeToFile'方法引用了一個變量'descripPath'，它應該是'titlePath'？ – Graham

好吧我是盲目的謝謝你額外的眼睛是今天早上2點，當我寫這明顯睡眠沒有讓我看到任何更好的地方作爲一個答案，我會接受它。 –

@格拉漢姆看起來像你有答案... –

我認爲你將writeToFile方法指的是應該是titlePath的變量descripPath？

來源

2013-06-02 17:33:13 Graham

謝謝格雷厄姆打開我的眼睛 –

爲什麼不能將數據寫入文件

回答

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