iOS：将两个NSMutableArray存储在.plist文件中 [英] iOS: store two NSMutableArray in a .plist file
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问题描述
我想存储两个我在AppDelegate中用作全局数组的NSMutableArray。这两个数组也与NSUserDefaults一起存储。现在我想知道如何创建这个文件，以及每次修改它们时如何存储这两个数组。你能帮帮我吗？
I want to store two NSMutableArray that I use as global array in AppDelegate. These two array are also store with NSUserDefaults. Now I want to know how I must create this file and how can I store these two array everytime I modify them. Can You help me?
推荐答案
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创建一个包含两个NSMutableArrays的NSArray。
Create an NSArray containing your two NSMutableArrays.
NSArray *array = [NSArray arrayWithObjects:<#(id), ...#>, nil];
将数组写入文件。
Write the array to a file.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *libraryDirectory = [paths objectAtIndex:0];
NSString *location = [libraryDirectory stringByAppendingString:@"/somefilename.plist"];
[array writeToFile:location atomically:YES];
从文件加载数组。
Load the array from the file.
NSString *path = [bundle pathForResource:@"file" ofType:@"plist"];
NSArry *array = (path != nil ? [NSArray arrayWithContentsOfFile:location] : nil);
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