Comments (2)
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;
}
})}
/>);
}
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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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