[英]NSArray or NSDictionary from plist file
In a method I need to read a NSArray
or NSDictionary
from a plist
file. 在一种方法中,我需要从plist
文件读取NSArray
或NSDictionary
。
Here is my problem : How can I create a NSArray
OR a NSDictionary
from a plist
file when I don't know if it's an array or dictionary in it ? 这是我的问题:不知道其中是数组还是字典时,如何从plist
文件创建NSArray
或NSDictionary
?
I know I can make : 我知道我可以做到:
NSArray *myArray = [NSArray arrayWithContentsOfFile:filePath];
or 要么
NSDictionary *myDico = [NSDictionary dictionaryWithContentsOfFile:filePath];
But I don't know if filePath contains a NSArray
or a NSDictionary
. 但是我不知道filePath是否包含NSArray
或NSDictionary
。 I would like something like : 我想要类似的东西:
id myObject = [... ...WithContentOfFile:filePath];
Can somebody help me and give me the best way to do this ? 有人可以帮助我,给我最好的方法吗?
Here's how 这是如何做
NSData *data = [NSData dataWithContentsOfFile:filePath];
id obj = [NSPropertyListSerialization propertyListWithData:data options:NSPropertyListImmutable format:NULL error:nil];
if([obj isKindOfClass:[NSDictionary class]]) {
//cast obj to NSDictionary
}
else if([obj isKindOfClass:[NSArray class]]) {
//cast obj to NSArray
}
You can use isKindOfClass method to detect which class is that. 您可以使用isKindOfClass方法检测该类。 You will have to load .plist file using: 您将必须使用以下方式加载.plist文件:
NSString *rootPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
plistPath = [rootPath stringByAppendingPathComponent:@"Data.plist"];
if (![[NSFileManager defaultManager] fileExistsAtPath:plistPath]) {
plistPath = [[NSBundle mainBundle] pathForResource:@"Data" ofType:@"plist"];
}
NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:plistPath];
id objectFromPlist = [NSPropertyListSerialization
propertyListWithData:plistXML
options:0
format:&format
errorDescription:&errorDesc];
And you can check here: 您可以在这里查看:
if([objectFromPlist isKindOfClass:[NSArray class]])
{
NSArray* plistArray = (NSArray*) classFromPlist;
}
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