NSString *plistPath = [[NSBundle mainBundle]pathForResource:@"Pc_sdk" ofType:@"plist"];

    NSLog(@"plistPath:%@",plistPath);

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

    NSLog(@"data:%@",data);

    id aa= [data objectForKey:@"SdkArray"];

    NSLog(@"aaff:%@",aa);

    //aa = [self pcinit];

    //把从配置文件里读到的string 转化成类名

    Class class = NSClassFromString([data objectForKey:@"SdkArray"]);

    Pctest *ctest = [(Pctest*)[class alloc]init];

    //[ctest pc_init];

    NSLog(@"ctesttt:%@",ctest);

    //Pctest 里的方法名要与配置文件里的.a 方法名要一致

    [ctest pcInit];