Question

这段代码可以在iPhone模拟器上运行但不在设备上运行，虽然我正在寻找一个已经写在文件目录中的磁盘上的文件

NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filepath = [documentsDirectory stringByAppendingString:@"notificationScheduled.plist"];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filepath];
if (fileExists) {
    NSMutableArray *array = [NSMutableArray arrayWithContentsOfFile:filepath];
    NSLog(@"%@", array);
    [array addObject:date];
    [array writeToFile:filepath atomically:YES];
} else {
    NSMutableArray *array = [NSMutableArray arrayWithObject:date];
    [array writeToFile:filepath atomically:YES];
}

Answer 1

是。要保存属性列表：这可能有助于你

如果不是留下这个，因为它可以帮助别人

NSString * error;
NSData * data = [NSPropertyListSerialization dataFromPropertyList:yourPlist format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];
[data writeToFile:pathToYourFile atomically:YES];

yourPlist必须是NSData，NSString，NSNumber，NSDate，NSArray或NSDictionary个对象

阅读你的房产清单。

NSString * error;
NSData * data = [NSData dataWithContentsOfFile:pathToYourFile];
yourPlist = [NSPropertyListSerialization propertyListFromData:data mutabilityOption:NSPropertyListImmutable format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];

Answer 2

找到答案，而不是

NSString *filepath = [documentsDirectory stringByAppendingString:@"notificationScheduled.plist"];

使用

NSString *filepath = [documentsDirectory stringByAppendingPathComponent:@"notificationScheduled.plist"];

.plist在设备上写错误

2 个答案: