plist文件的存放在程序的bundle目录下和沙盒目录下

//长时间不用的知识很容易忘，所以正如小学教体育的语文老师所说：“好记性不如烂笔头”//

存放在bundle目录下的文件只可以读，不可以写

//存放在sandbox下的可读可写

bundle目录下读取：

NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"city" ofType:@"plist"];//获取文件路径方式一

NSString *plistPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"city.plist"];//获取文件路径方式二

NSDictionary *cityDic = [NSDictionary dictionaryWithContentsOfFile:plistPath];//获取数据

沙盒目录下读取：

//沙盒获取路径

NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *path = [pathArray objectAtIndex:0];

//获取文件的完整路径

NSString *plistPath = [path stringByAppendingPathComponent:@"city.plist"];

NSFileManager *fileManager = [NSFileManager defaultManager];

if(![fileManager fileExistsAtPath:plistPath])  {

NSString *dataPath = [[NSBundle mainBundle]pathForResource:@"city" ofType:@"plist"];;

NSError *error;

//拷贝文件到沙盒的document下

if([fileManager copyItemAtPath:dataPath toPath:plistPath error:&error]) {

NSLog(@"copy success");

} else{

NSLog(@"%@",error);

}

}

NSMutableDictionary *dataDic = [[NSMutableDictionary alloc]initWithContentsOfFile:plistPath];

沙盒目录下写入：

NSMutableDictionary *dataDic = [[NSMutableDictionary alloc]initWithContentsOfFile:plistPath];

dataDic[@"beijing"] = @“首都”; //更改内容

[dataDic writeToFile:plistPath atomically:YES]; //写入