【iOS开发】数据持久化之plist存储

**plist文件其实就是XML文档，只是后缀名为plist。

如果对象是NSString、NSDictionary、NSArray、NSData、NSNumber等类型，就可以使用writeToFile:atomically:方法直接将对象写到属性列表文件中

**

关于plist文件的写入

- (void)saveArray
{
    // 1.获得沙盒根路径
    NSString *home = NSHomeDirectory();

    // 2.document路径
    NSString *docPath = [home stringByAppendingPathComponent:@"Documents"];

    // 3.新建数据
    NSArray *data = @[@"jack", @10, @"ffdsf"];

    NSString *filepath = [docPath stringByAppendingPathComponent:@"data.plist"];

    [data writeToFile:filepath atomically:YES];
}

关于plist文件的读取

- (IBAction)read {
    // 1.获得沙盒根路径
    NSString *home = NSHomeDirectory();

    // 2.document路径
    NSString *docPath = [home stringByAppendingPathComponent:@"Documents"];

    // 3.文件路径
    NSString *filepath = [docPath stringByAppendingPathComponent:@"data.plist"];

    // 4.读取数据
    NSArray *data = [NSArray arrayWithContentsOfFile:filepath];
    NSLog(@"%@", data);
}