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小莫唐尼
139 lines
3.7 KiB
Markdown
139 lines
3.7 KiB
Markdown
# cover-image
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## Instructions
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覆盖在原生组件上的图片视图。可覆盖的原生组件同 cover-view ，支持嵌套在 cover-view 里。
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平台差异说明
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属性说明
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### Syntax
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- 使用 `<cover-image />`（或 `<cover-image></cover-image>`，当需要包裹子节点时）。
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- 遇到平台差异时，建议使用条件编译（`#ifdef / #endif`）显式处理。
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#### Properties
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| 属性名 | 类型 | 默认值 | 说明 | 平台差异说明 |
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| --- | --- | --- | --- | --- |
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| src | String | | 图标路径。支持本地路径、网络路径。不支持 base64 格式。 | |
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#### Events
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| 事件名 | 类型 | 默认值 | 说明 | 平台差异说明 |
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| --- | --- | --- | --- | --- |
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| @load | eventhandle | | 图片加载成功时触发 | 微信小程序 2.1.0、百度小程序、QQ小程序、快手小程序、京东小程序 |
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| @error | eventhandle | | 图片加载失败时触发 | 微信小程序 2.1.0、百度小程序、QQ小程序、快手小程序、京东小程序 |
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#### Platform Compatibility
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See official docs for platform support table: `https://doc.dcloud.net.cn/uni-app-x/component/cover-image.html`
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### Examples
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### Example (Example 1)
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```vue
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<!-- 本示例未包含完整css，获取外链css请参考上文，在hello uni-app项目中查看 -->
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<template>
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<view class="page">
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<video class="video" id="demoVideo" :controls="false" :enable-progress-gesture="false" :show-center-play-btn="true" src="https://img.cdn.aliyun.dcloud.net.cn/guide/uniapp/%E7%AC%AC1%E8%AE%B2%EF%BC%88uni-app%E4%BA%A7%E5%93%81%E4%BB%8B%E7%BB%8D%EF%BC%89-%20DCloud%E5%AE%98%E6%96%B9%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B@20181126-lite.m4v">
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<cover-view class="controls-title">简单的自定义 controls</cover-view>
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<cover-image class="controls-play img" @click="play" src="/static/play.png"></cover-image>
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<cover-image class="controls-pause img" @click="pause" src="/static/pause.png"></cover-image>
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</video>
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</view>
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</template>
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```
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### Example (Example 2)
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```vue
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<!-- 本示例未包含完整css，获取外链css请参考上文，在hello uni-app项目中查看 -->
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<template>
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<view class="page">
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<video class="video" id="demoVideo" :controls="false" :enable-progress-gesture="false" :show-center-play-btn="true" src="https://img.cdn.aliyun.dcloud.net.cn/guide/uniapp/%E7%AC%AC1%E8%AE%B2%EF%BC%88uni-app%E4%BA%A7%E5%93%81%E4%BB%8B%E7%BB%8D%EF%BC%89-%20DCloud%E5%AE%98%E6%96%B9%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B@20181126-lite.m4v">
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<cover-view class="controls-title">简单的自定义 controls</cover-view>
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<cover-image class="controls-play img" @click="play" src="/static/play.png"></cover-image>
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<cover-image class="controls-pause img" @click="pause" src="/static/pause.png"></cover-image>
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</video>
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</view>
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</template>
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```
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### Example (Example 3)
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```vue
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<script>
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export default {
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data() {
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return {}
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},
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mounted() {
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this.videoCtx = uni.createVideoContext('demoVideo')
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},
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methods: {
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play(event) {
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this.videoCtx.play();
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uni.showToast({
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title: '开始播放',
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icon: 'none'
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});
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},
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pause(event) {
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this.videoCtx.pause();
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uni.showToast({
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title: '暂停播放',
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icon: 'none'
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});
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}
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}
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}
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</script>
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```
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### Example (Example 4)
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```vue
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<style>
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.page {
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display: flex;
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justify-content: center;
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}
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.video {
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position: relative;
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}
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cover-view,
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cover-image {
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display: inline-block;
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}
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.img {
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position: absolute;
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width: 100rpx;
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height: 100rpx;
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top: 50%;
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margin-top: -50rpx;
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}
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.controls-play {
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left: 50rpx;
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}
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.controls-pause {
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right: 50rpx;
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}
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.controls-title {
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width: 100%;
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text-align: center;
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color: #FFFFFF;
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}
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</style>
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```
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Reference: [Official Documentation](https://doc.dcloud.net.cn/uni-app-x/component/cover-image.html)
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