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349989153 avatar 349989153 commented on August 19, 2024
renderActiveIndicator() {
    return (<View
      style={[
        this.indicatorStyle,
        styles.activePoint,
        {backgroundColor: this.props.activeIndicatorColor, zIndex: 9 },
      ]}
      ref={(ref) => {
        this.activeIndicator = ref
      }}
      // 测算左边距长度
      onLayout={() => this.activeIndicator.measure((x, y, width, height, pageX, pageY) => {
        if (!this.initActiveIndicatorX) {
          this.initActiveIndicatorX = x;
        }
      })}
    />);
  }

from better-banner.

349989153 avatar 349989153 commented on August 19, 2024

看了一眼源码,在renderActiveIndicator下面加了个zIndex: 9,把层级提高了,就有了。

这种写代码思路是没碰到过的,我以为所有的dot会一起渲染,然后区分active和inactive,去渲染颜色。

没想到是inactive写一行,然后active的dot是absolute,覆盖在上面。为什么要这么写?

from better-banner.

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