picker_start=[[UIDatePicker alloc]initWithFrame:CGRectMake(centerView.frame.size.width/-,centerView.frame.size.height/-, , )];

        [picker_start setDatePickerMode:UIDatePickerModeDate];

        NSLocale * locale = [[NSLocale alloc] initWithLocaleIdentifier:@"Chinese"];

        [picker_start setLocale:locale];

        [bg_view addSubview:picker_start];