占位图的显示模式无法修改

[TmacCL0523]

在 SDCycleScrollView.m文件里面

    if (!self.backgroundImageView) {
        UIImageView *bgImageView = [UIImageView new];
        /// bgImageView.contentMode = UIViewContentModeScaleToFill;
       需要这样修改下
        bgImageView.contentMode = self.bannerImageViewContentMode;

        [self insertSubview:bgImageView belowSubview:self.mainView];
        self.backgroundImageView = bgImageView;
    }