Question

我有一个问题，我无法在iOS 8中保存，而它在iOS 7中工作正常。请问我的问题在哪里？

.h       
    NSMutableArray *selected;


.m
    - (void)saveSelected
    {
        if (![selected writeToFile:[SettingVO toFullPath:@"selected"] atomically:YES])
        {
            NSLog(@"Could not save selected!!! %@", selectedParitems);
        }
    }

更新：我已经包含了toFullPath方法并对其进行了调试。我发现在iOS 7中，如果fileMgr没有通过抛出，并且在iOS 8下工作正常则返回nil。我希望这会有所帮助。

+ (NSString *)toFullPath:(NSString *)path
{
    NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
    NSURL *url = [NSURL fileURLWithPath:bundlePath];
    NSMutableArray *components = [NSMutableArray arrayWithArray:[url pathComponents]];
    [components removeLastObject];
    [components addObject:@"Documents"];
    [components addObject:@"data"];

    NSString *fullPath = [NSString pathWithComponents:components];

    NSFileManager *fileMgr = [NSFileManager defaultManager];
    if ( ![fileMgr fileExistsAtPath:fullPath isDirectory:NULL] )
    {
        if ([fileMgr createDirectoryAtPath:fullPath withIntermediateDirectories:NO attributes:nil error:nil])
        {
            //--N-SLog(@"+ Items directory created.");
        }
        else
        {
            //--N-SLog(@"- Couldn't create Items directory!!!");
            return nil;
        }
    }

    return [fullPath stringByAppendingPathComponent:path];
}

Answer 1

如果要查找可写位置，请不要使用捆绑路径。这指向应用程序，它是只读的。

使用...

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [paths firstObject];
if (path) {
    //  ...
}

...获取基本文档路径。

在iOS 8问题中无法写入ToFile toFullPath

1 个答案: