未能複製ios8中文檔目錄中的可寫plist文件

Question

我試圖從應用程序包複製一個plist文件，該文件從應用程序包複製到文檔目錄，但只有ios8中的消息「NSInternalInconsistencyException」失敗，原因如下： '操作無法完成（可可錯誤4）'。'「。它在ios7中正常工作。請指導可能的原因。

//To get the plist file path within app 
-(NSString *)ogPath 
{ 
    NSString *str = [[NSBundle mainBundle] bundlePath]; 
    str = [str stringByAppendingPathComponent:@"configUrl.plist"]; 
    return str; 
} 
//To get the plist file path within documents directory 
-(NSString *)documentPath 
{ 
    NSString *str = [[[NSBundle mainBundle] bundlePath] stringByDeletingLastPathComponent]; 
    str = [str stringByAppendingFormat:@"/Documents/configUrl.plist"]; 
    return str; 
} 
//to copy plist file within app to documents directory 
-(void)copytheplistfile 
{ 
    NSString *plistpath = [self ogPath]; 
    NSString *docpath = [self documentPath]; 
    NSFileManager *file = [NSFileManager defaultManager]; 
    BOOL fileexist = [file fileExistsAtPath:docpath]; 
    if(!fileexist) 
    { 
     NSError *err; 
     BOOL copyResult=[file copyItemAtPath:plistpath toPath:docpath error:&err]; 
     NSLog(@"error:%@",[err localizedDescription]); 
     if(!copyResult) 
      NSAssert1(0, @"Failed to create writable plist file with message '%@'.", [err localizedDescription]); 
    } 
} 

Answer 1

在iOS 8中，應用程序容器的文件系統佈局已更改。應用程序及其內容不再存儲在一個根目錄中。

-(NSString *)documentPath 
{ 
    NSString *str=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 
    str = [str stringByAppendingFormat:@"/configUrl.plist"]; 

    return str; 
}