数据库存存储 xml属性列表_plist

属性列表是xml格式的文件,扩展名为plist NSString、NSDictionary

如果对象是 NSString、NSDictionary,NSData,NSNumber等类型,就可以使⽤writToFile:atomically:法直接将对象写⼊入到属性列表⽂文件中

 

//代码示例

//写入Plist文件
 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    NSString *plist_path = [path stringByAppendingPathComponent:@"MyFile.plist"];
//将数据封装成字典
NSMutableDictionary *dict = [NSMutableDictionary dictionary]; [dict setObject:@"13166666666" forKey:@"phone"];
[dict setObject:@"27" forKey:@"age"];
// 将字典持久化到Documents/MyFile.plist⽂文件中
[dict writeToFile:plist_path atomically:YES];

//添加数据
[dict setObject:@"test" forKey:@"test"]; [dict writeToFile:plist_path atomically:YES]; 

[dict writeToFile:plist_path atomically:YES]; 
 

//获取Documents目录
 

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
    NSString *path = [paths objectAtIndex:0];
    NSString *plist_path = [path
stringByAppendingPathComponent:@"MyFile.plist"];
//读取Documents/MyFile.plist的内容,实例化NSDictionary
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:plist_path]; NSLog(@"phone:%@", [dict objectForKey:@"phone"]);
NSLog(@"age:%@", [dict objectForKey:@"age"]);