iOS 数据存储

一、plist文件

项目中新建的plist文件读取

    NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"address" ofType:@"plist"];
    NSDictionary *data = [NSDictionary dictionaryWithContentsOfFile:plistPath];

代码添加的plist文件

    NSString *componentPath = @"demo.plist";
    
    NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *path = [pathArray.firstObject stringByAppendingPathComponent:componentPath];
    
    //增
    NSMutableDictionary *data = [NSMutableDictionary dictionary];
    [data setObject:@"对象1" forKey:@"关键字1"];
    [data setValue:@"对象2" forKey:@"关键字2"];
    [data setValue:@"对象3" forKeyPath:@"关键字3"];
    
    [data writeToFile:path atomically:YES];
    
    //删
    data = [NSMutableDictionary dictionaryWithContentsOfFile:path];
    [data removeObjectForKey:@"关键字1"];
    [data writeToFile:path atomically:YES];
    
    //改
    
    //查
    NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithContentsOfFile:path];