我知道iOS模拟器每次运行时都会在不同的目录中找到它。考虑到这一点,我有这段代码可以给出Core Data sqlite文件目录:
// find current directory for saori.sqlite
NSFileManager *fileManager = [NSFileManager defaultManager];
NSURL *documentDirectory = [[fileManager URLsForDirectory:NSLibraryDirectory inDomains:NSUserDomainMask]firstObject];
NSString *sqliteFilePath = [[documentDirectory URLByAppendingPathComponent:@"Application Support/SalonBook/saori.sqlite"] absoluteString];
if ([fileManager fileExistsAtPath:sqliteFilePath])
[MagicalRecord cleanUp]; // set stack, etc to 'nil'
else {
NSLog(@"\n\n-->sqlite files not found"); // log message "unable to find sqlite files
return;
}
这是sqliteFilePath对象的打印输出:
Printing description of sqliteFilePath:
file:///Users/rolfmarsh/Library/Developer/CoreSimulator/Devices/1EE69744-255A-45CD-88F1-63FEAD117B32/data/Containers/Data/Application/C8FF20F0-41E4-4F26-AB06-1F29936C2208/Library/Application%20Support/SalonBook/saori.sqlite
这是Finder中文件的图像:
问题在于:我进入sqliteFilePath,确实存在saori.sqlite文件!为什么-fileExistsAtPath会失败呢?