Objective-C 学习笔记 | Property List 格式

Objective-C 学习笔记 | Property List 格式

• Objective-C 学习笔记 | Property List 格式

Objective-C 学习笔记 | Property List 格式

Property List 文件可以由以下对象组成：

1. NSArray
2. NSDictionary
3. NSString
4. NSData
5. NSDate
6. NSNumber

以下是一个示例程序：

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSMutableArray *stocks = [[NSMutableArray alloc] init];
        NSMutableDictionary *stock;
        stock = [NSMutableDictionary dictionary];
        [stock setObject:@"AAPL" forKey:@"symbol"];
        [stock setObject: [NSNumber numberWithInt:200] forKey:@"shares"];
        [stocks addObject:stock];
        stock = [NSMutableDictionary dictionary];
        [stock setObject:@"G00G" forKey:@"symbol"];
        [stock setObject:[NSNumber numberWithInt:160] forKey:@"shares"];
        [stocks addObject: stock];
        [stocks writeToFile:@"/tmp/stocks.plist" atomically:YES];
    }
    return 0;
}

运行该程序，得到一个stocks.plist 文件。使用 Xcode 打开：

以文本编辑器打开：

	
		shares
		200
		symbol
		AAPL
	
	
		shares
		160
		symbol
		G00G
	

也可以读取该文件：

NSArray *stockList = [NSArray arrayWithContentsOfFile:@"/tmp/stocks.plist"];
for (NSDictionary *d in stockList)
		NSLog(@"I have %@ shares of %@", [d objectForKey:@"shares"], [d objectForKey:@"symbol"]);