官网:https://uniapp.dcloud.io/api/media/image?id=previewimage
uniapp 实现图片预览 单图预览和多图预览
关键点就是调用
uni.previewImage({
current: index,
urls: photoList
});
如果是单图预览,current对应就是0,urls:必须是单个某一条传入。因为现在预览一张图片,你的current传死就是0.所以urls也必须是字符串形式
如果是多图预览,current,对应就是在循环图片数据的索引
,urls: 是数组形式传入。因为uni.previewImage 要根据 current的索引,来动态匹配urls里面的数据
下面代码演示
单图预览模式
previewImg(photoImg) {
let imgsArray = [];
imgsArray[0] = photoImg;
uni.previewImage({
current: 0,
urls: imgsArray
});
}
多图预览模式
<template>
<view>
<view>预览图片</view>
<view class="photosView">
<block v-for="(item, index) in photos" :key="index">
<view class="box"><image :src="item.src" mode="widthFix" @click="previewImage(index)"></image></view>
</block>
</view>
</view>
</template>
<script>
export default {
data() {
return {
photos: [
{
id: ‘1‘,
src:
‘https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1592807923709&di=dda3e0b4d055c8dfaaaa9168c570983a&imgtype=0&src=http%3A%2F%2F00.minipic.eastday.com%2F20170331%2F20170331113141_98c8105e504ff71e68d59a6eaa30bd7e_5.jpeg‘
},
{
id: ‘2‘,
src:
‘https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1592807923711&di=6b8dfec17f7be8213ae23db6e1b7719a&imgtype=0&src=http%3A%2F%2F00.minipic.eastday.com%2F20170509%2F20170509200320_7dacf48b2bcc4b4ab7a0412b333ccb99_6.jpeg‘
},
{
id: ‘3‘,
src:
‘https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1592807858562&di=262d91cfb1292942a257d17973a4843c&imgtype=0&src=http%3A%2F%2F00.minipic.eastday.com%2F20170303%2F20170303094555_7851ce3d965701f3201d4df2dde56592_8.jpeg‘
},
{
id: ‘4‘,
src:
‘https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1592807923711&di=61c1d93f123d6039af37727812c64456&imgtype=0&src=http%3A%2F%2F00.minipic.eastday.com%2F20170318%2F20170318103604_eea6fa2eab8da83f770158463b7201f7_2.jpeg‘
}
]
};
},
methods: {
previewImage(index) {
let photoList = this.photos.map(item => {
return item.src;
});
uni.previewImage({
current: index,
urls: photoList
});
}
}
};
</script>
<style scoped lang="less">
* {
margin: 0;
padding: 0;
}
.photosView {
display: flex;
justify-content: space-between;
flex-wrap: wrap;
.box {
width: 30%;
image {
width: 100%;
height: 100%;
}
}
}
</style>