1、集合数组创建
NSMutableArray *bleDeviceArray = [[NSMutableArray alloc]initWithCapacity:0]
[bleDeviceArray addObject:@{@"name":@"device"}];
2、结构体创建
NSDictionary *data = @{
@"code":@"0",
@"result":@"",
};
3、判断是否有这个key
NSDictionary *data = @{
@"code":@"0",
@"result":@"",
};
if([[data allKeys] containsObject:@"second"]){
}
4、取值
NSDictionary *data = @{
@"code":@"0",
@"result":@"",
};
NSString *mac = [data objectForKey:@"code"]
