1
我有4個NSMutableArray，啓動時它們已正確初始化。在我的代碼的一部分中，我將這些數組的內容寫入各個plist文件，並且這些plist文件已創建並添加到項目中。我有4個寫入文件的實例，出於某種原因，只有前2個寫入才能成功（didWrite和didWrite2），但寫入3和寫入4卻始終返回「nope」，這意味着寫入失敗。下面是初始化和的applicationDidFinishLaunching分配數組的代碼：爲什麼我在嘗試寫入plist文件時出現故障
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *DataPath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"Data.plist"];
NSString *inkDatesPath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"inkDates.plist"];
NSString *inkFontPath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"inkFont.plist"];
NSString *inkColorPath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"inkColor.plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: DataPath])
{
inks=[[NSMutableArray alloc] init ];
NSLog(@"initialized inks as new");
}
else inks=[[NSMutableArray alloc] initWithContentsOfFile:DataPath];
if (![fileManager fileExistsAtPath: inkDatesPath])
{
inkDates=[[NSMutableArray alloc] init ];
}
else inkDates=[[NSMutableArray alloc] initWithContentsOfFile:inkDatesPath];
if (![fileManager fileExistsAtPath: inkFontPath])
{
inkFont=[[NSMutableArray alloc] init ];
}
else inkFont=[[NSMutableArray alloc] initWithContentsOfFile:inkFontPath];
if (![fileManager fileExistsAtPath: inkColorPath])
{
inkColor=[[NSMutableArray alloc] init ];
NSLog(@"initialized inkColor as new");
}
else {
inkColor=[[NSMutableArray alloc] initWithContentsOfFile:inkColorPath];
NSLog(@"initialized inkColor as copy");
當應用程序第一次啓動時，我得到「初始化inkColor如新」，但我還是得到了不寫。墨水和墨水日期正確寫入，但另外兩個不。這裏是我的代碼，試圖寫入的plist文件：
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //1
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"Data.plist"]; //3
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: path])
{
NSString *bundle=[[NSBundle mainBundle] pathForResource:@"Data" ofType:@"plist"];
[fileManager copyItemAtPath:bundle toPath: path error:&error]; //6
}
NSString *pathDates = [documentsDirectory stringByAppendingPathComponent:@"inkDates.plist"]; //3
NSFileManager *fileManagerDates = [NSFileManager defaultManager];
if (![fileManagerDates fileExistsAtPath: pathDates])
{
NSString *bundle=[[NSBundle mainBundle] pathForResource:@"inkDates" ofType:@"plist"];
[fileManagerDates copyItemAtPath:bundle toPath: pathDates error:&error]; //6
}
NSFileManager *fileManagerFont = [NSFileManager defaultManager];
NSString *pathFont = [documentsDirectory stringByAppendingPathComponent:@"inkFont.plist"];
if (![fileManagerFont fileExistsAtPath: pathFont])
{
NSString *bundle=[[NSBundle mainBundle] pathForResource:@"inkFont" ofType:@"plist"];
[fileManagerFont copyItemAtPath:bundle toPath: pathFont error:&error]; //6
}
NSFileManager *fileManagerColor = [NSFileManager defaultManager];
NSString *pathColor = [documentsDirectory stringByAppendingPathComponent:@"inkColor.plist"];
if (![fileManagerFont fileExistsAtPath: pathColor])
{
NSString *bundle=[[NSBundle mainBundle] pathForResource:@"inkColor" ofType:@"plist"];
[fileManagerColor copyItemAtPath:bundle toPath: pathColor error:&error]; //6
}
NSDate *date = [NSDate date];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"EEEE, MMMM d, YYYY"];
NSString *dateString = [dateFormat stringFromDate:date];
[dateFormat release];
[appDelegate.inks addObject:[inkTextField text]];
[appDelegate.inkDates addObject:dateString];
[appDelegate.inkFont addObject:[inkTextField font]];
[appDelegate.inkColor addObject:[inkTextField textColor]];
NSLog(@"inkColor count: %i", [appDelegate.inkColor count]);
NSLog(@"Wrote to new index");
BOOL didWrite=[appDelegate.inks writeToFile: path atomically:YES];
if(didWrite==YES)
NSLog(@"didWrite");
else NSLog(@"nope");
BOOL didWrite2;
didWrite2=[appDelegate.inkDates writeToFile: pathDates atomically:YES];
if(didWrite2==YES)
NSLog(@"didWrite");
else NSLog(@"nope");
BOOL didWrite3;
didWrite3=[appDelegate.inkFont writeToFile: pathFont atomically:YES];
if(didWrite3==YES)
NSLog(@"didWrite");
else NSLog(@"nope");
BOOL didWrite4;
didWrite4=[appDelegate.inkColor writeToFile: pathColor atomically:YES];
if(didWrite4==YES)
NSLog(@"didWrite");
else NSLog(@"nope");