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打开官网,找到WebView的文档(模拟器不支持)javascript
鸿蒙webview的开发指南(原始连接,方便你们识别并点击):https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ui-java-component-webview-0000001092715158html
2. 建立一个Page Ability,把基本布局弄好java
下面是代码web
<?xml version="1.0" encoding="utf-8"?> <DirectionalLayout xmlns:ohos="http://schemas.huawei.com/res/ohos" ohos:height="match_parent" ohos:width="match_parent" ohos:orientation="vertical"> <DirectionalLayout ohos:height="30vp" ohos:width="match_parent" ohos:orientation="horizontal"> <TextField ohos:id="$+id:text_webView_Url" ohos:height="match_content" ohos:width="match_parent" ohos:background_element="$graphic:background_ability_simple_web_view" ohos:focus_border_enable="true" ohos:hint="请输入网址" ohos:max_text_lines="1" ohos:multiple_lines="false" ohos:scrollable="true" ohos:text="www.harmonyos.com" ohos:text_size="50" ohos:weight="1" /> <Button ohos:id="$+id:button_webview_surf" ohos:height="match_content" ohos:width="60vp" ohos:background_element="$graphic:button_element" ohos:text="跳转" ohos:text_size="50"/> </DirectionalLayout> <ProgressBar ohos:id="$+id:other_webView_progressBar" ohos:height="10vp" ohos:width="match_parent" ohos:visibility="hide"> </ProgressBar> <ohos.agp.components.webengine.WebView ohos:id="$+id:webview_webview_webview" ohos:height="match_parent" ohos:width="match_parent" ohos:weight="1"> </ohos.agp.components.webengine.WebView> <DirectionalLayout ohos:height="30vp" ohos:width="match_parent" ohos:orientation="horizontal"> <DirectionalLayout ohos:height="match_content" ohos:width="match_parent" ohos:orientation="horizontal" ohos:weight="1"> <Button ohos:id="$+id:button_webview_back" ohos:height="match_content" ohos:width="match_parent" ohos:background_element="$graphic:button_element" ohos:layout_alignment="horizontal_center" ohos:text="向后" ohos:text_size="50" > </Button> </DirectionalLayout> <DirectionalLayout ohos:height="match_content" ohos:width="match_parent" ohos:orientation="horizontal" ohos:weight="1"> <Button ohos:id="$+id:button_webview_refresh" ohos:height="match_content" ohos:width="match_parent" ohos:background_element="$graphic:button_element" ohos:layout_alignment="horizontal_center" ohos:text="刷新" ohos:text_size="50"> </Button> </DirectionalLayout> <DirectionalLayout ohos:height="match_content" ohos:width="match_parent" ohos:orientation="horizontal" ohos:weight="1"> <Button ohos:id="$+id:button_webview_forward" ohos:height="match_content" ohos:width="match_parent" ohos:background_element="$graphic:button_element" ohos:layout_alignment="horizontal_center" ohos:text="向前" ohos:text_size="50"> </Button> </DirectionalLayout> </DirectionalLayout> </DirectionalLayout>
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把基本的按钮事件弄好json
序号 按钮 功能 1 跳转 把文本框中的网址打开 2 后退 在webview中点了新连接后,想回去看一看 3 刷新 之前的人在网络很差,美女图片出不来的时候用,如今通常是发了一篇帖子后,做者会没事点一下,看看有没有人点赞 4 前进 跟后退是关联用的,就是点了新连接,回去看了看后,仍是以为新连接更好看,就又要前进. 代码api
Component.ClickedListener clickedListener = new Component.ClickedListener() { @Override public void onClick(Component component) { int componentId = component.getId(); switch (componentId) { case ResourceTable.Id_button_webview_surf: { urlAddress = textWebViewUrl.getText(); if (urlAddress.isEmpty()) { return; } if (!urlAddress.startsWith(FinalValue.URL_HTTPS)) { urlAddress = FinalValue.URL_HTTPS + urlAddress; } webView.load(urlAddress); } break; case ResourceTable.Id_button_webview_back: { if (webView.getNavigator().canGoBack()) { webView.getNavigator().goBack(); } } break; case ResourceTable.Id_button_webview_refresh: { webView.reload(); } break; case ResourceTable.Id_button_webview_forward: { if (webView.getNavigator().canGoForward()) { webView.getNavigator().goForward(); } } break; default: { System.out.println("没有选择任何的页面"); } break; } } };
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把WebView照文档上面的要求弄好浏览器
没啥好说的,就是规定.我加在了调用load方法打开网址那行代码后面,我还弄了一个跟进度条关联的功能网络
//容许javascript交互 WebConfig webConfig = webView.getWebConfig(); webConfig.setDataAbilityPermit(true); webConfig.setJavaScriptPermit(true); webConfig.setLoadsImagesPermit(true); webConfig.setMediaAutoReplay(true); webConfig.setLocationPermit(true); webConfig.setSecurityMode(WebConfig.SECURITY_SELF_ADAPTIVE); webView.setWebAgent(new WebAgent() { @Override public void onLoadingPage(WebView webView, String url, PixelMap favicon) { super.onLoadingPage(webView, url, favicon); // 这儿我加了一个更新网址文本框中新页面url的功能 if (url != urlAddress) { textWebViewUrl.setText(url); } } @Override public void onPageLoaded(WebView webView, String url) { super.onPageLoaded(webView, url); // 页面加载结束后自定义处理 } @Override public void onLoadingContent(WebView webView, String url) { super.onLoadingContent(webView, url); // 加载资源时自定义处理 } @Override public void onError(WebView webView, ResourceRequest request, ResourceError error) { super.onError(webView, request, error); // 发生错误时自定义处理 } }); webView.setBrowserAgent(new BrowserAgent(SimpleWebViewAbilitySlice.this) { @Override public void onTitleUpdated(WebView webView, String title) { super.onTitleUpdated(webView, title); // 标题变动时自定义处理 } @Override public void onProgressUpdated(WebView webView, int newProgress) { super.onProgressUpdated(webView, newProgress); if (newProgress < FinalValue.PROGRESS_BAR_FINISHED) { otherWebViewProgressBar.setVisibility(Component.VISIBLE); otherWebViewProgressBar.setProgressValue(newProgress); } else if (newProgress == FinalValue.PROGRESS_BAR_FINISHED) { otherWebViewProgressBar.setVisibility(Component.HIDE); } // 加载进度变动时自定义处理 } });
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完事?or完了还有事?app
从上面拷代码的话,估计完事了.可是,我是用的回忆,可是代码却没有回退,因此我仍是有必要在这儿把步骤中的问题说一说,方便不拷代码的同窗也能跑出一个界面.主要体现以下:dom
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权限配置,很少说
"reqPermissions": [ { "name": "ohos.permission.INTERNET" } ]
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xml中的WebView要带包名
<ohos.agp.components.webengine.WebView ohos:id="$+id:webview_webview_webview" ohos:height="match_parent" ohos:width="match_parent" ohos:weight="1"> </ohos.agp.components.webengine.WebView>
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不按上面包名写的话:
- 真机运行后没有WebView的界面.哪怕weight=1,也不行
- 点击跳转按钮后,PageAbility会闪退,回到首屏(调用它的页面)
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完整代码
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布局
序号为2的步骤中贴全了
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按钮背景
<?xml version="1.0" encoding="UTF-8" ?> <shape xmlns:ohos="http://schemas.huawei.com/res/ohos" ohos:shape="rectangle"> <corners ohos:radius="20"/> <solid ohos:color="#70dbdb"/> </shape>
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java代码
package com.javaaier.family.huawei.slice; import com.javaaier.family.huawei.ResourceTable; import com.javaaier.family.huawei.common.FinalValue; import ohos.aafwk.ability.AbilitySlice; import ohos.aafwk.content.Intent; import ohos.agp.components.*; import ohos.agp.components.webengine.*; import ohos.media.image.PixelMap; /** * @Author JavaAIer * @Description : webview控件例子1:用于简单的测试webview的用法 <br/> * 001 简单webview示例 * @Date: 2021/4/16 */ public class SimpleWebViewAbilitySlice extends AbilitySlice { String urlAddress; ProgressBar otherWebViewProgressBar; TextField textWebViewUrl; Button buttonWebViewSurf, buttonWebViewBack, buttonWebViewRefresh, buttonWebViewForward; WebView webView; Component.ClickedListener clickedListener = new Component.ClickedListener() { @Override public void onClick(Component component) { int componentId = component.getId(); switch (componentId) { case ResourceTable.Id_button_webview_surf: { urlAddress = textWebViewUrl.getText(); if (urlAddress.isEmpty()) { return; } if (!urlAddress.startsWith(FinalValue.URL_HTTPS)) { urlAddress = FinalValue.URL_HTTPS + urlAddress; } webView.load(urlAddress); //容许javascript交互 WebConfig webConfig = webView.getWebConfig(); webConfig.setDataAbilityPermit(true); webConfig.setJavaScriptPermit(true); webConfig.setLoadsImagesPermit(true); webConfig.setMediaAutoReplay(true); webConfig.setLocationPermit(true); webConfig.setSecurityMode(WebConfig.SECURITY_SELF_ADAPTIVE); webView.setWebAgent(new WebAgent() { @Override public void onLoadingPage(WebView webView, String url, PixelMap favicon) { super.onLoadingPage(webView, url, favicon); // 页面开始加载时自定义处理 if (url != urlAddress) { textWebViewUrl.setText(url); } } @Override public void onPageLoaded(WebView webView, String url) { super.onPageLoaded(webView, url); // 页面加载结束后自定义处理 } @Override public void onLoadingContent(WebView webView, String url) { super.onLoadingContent(webView, url); // 加载资源时自定义处理 } @Override public void onError(WebView webView, ResourceRequest request, ResourceError error) { super.onError(webView, request, error); // 发生错误时自定义处理 } }); webView.setBrowserAgent(new BrowserAgent(SimpleWebViewAbilitySlice.this) { @Override public void onTitleUpdated(WebView webView, String title) { super.onTitleUpdated(webView, title); // 标题变动时自定义处理 } @Override public void onProgressUpdated(WebView webView, int newProgress) { super.onProgressUpdated(webView, newProgress); if (newProgress < FinalValue.PROGRESS_BAR_FINISHED) { otherWebViewProgressBar.setVisibility(Component.VISIBLE); otherWebViewProgressBar.setProgressValue(newProgress); } else if (newProgress == FinalValue.PROGRESS_BAR_FINISHED) { otherWebViewProgressBar.setVisibility(Component.HIDE); } // 加载进度变动时自定义处理 } }); } break; case ResourceTable.Id_button_webview_back: { if (webView.getNavigator().canGoBack()) { webView.getNavigator().goBack(); } } break; case ResourceTable.Id_button_webview_refresh: { webView.reload(); } break; case ResourceTable.Id_button_webview_forward: { if (webView.getNavigator().canGoForward()) { webView.getNavigator().goForward(); } } break; default: { System.out.println("没有选择任何的页面"); } break; } } }; /** * @Author JavaAIer * @Description : * @Date: 2021/4/16 14:46 * * @param intent */ @Override public void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_ability_simple_web_view); otherWebViewProgressBar = (ProgressBar) findComponentById(ResourceTable.Id_other_webView_progressBar); textWebViewUrl = (TextField) findComponentById(ResourceTable.Id_text_webView_Url); buttonWebViewSurf = (Button) findComponentById(ResourceTable.Id_button_webview_surf); buttonWebViewSurf.setClickedListener(clickedListener); buttonWebViewBack = (Button) findComponentById(ResourceTable.Id_button_webview_back); buttonWebViewBack.setClickedListener(clickedListener); buttonWebViewRefresh = (Button) findComponentById(ResourceTable.Id_button_webview_refresh); buttonWebViewRefresh.setClickedListener(clickedListener); buttonWebViewForward = (Button) findComponentById(ResourceTable.Id_button_webview_forward); buttonWebViewForward.setClickedListener(clickedListener); webView = (WebView) findComponentById(ResourceTable.Id_webview_webview_webview); } @Override public void onActive() { super.onActive(); } @Override public void onForeground(Intent intent) { super.onForeground(intent); } } /* * 这一截卡哇伊大喵在config.json用了,我发现用不用没啥区别啊 * https://blog.csdn.net/qq_33259323/article/details/115596296 * "default": { "network": { "cleartextTraffic": true, "securityConfig": { "domainSettings": { "cleartextPermitted": true, "domains": [ { "subdomains": true, "name": "www.harmonyos.com" } ] } } } } * * */
- config.json
``` json
{
"app": {
"bundleName": "com.javaaier.family.huawei",
"vendor": "javaaier",
"version": {
"code": 1,
"name": "1.0"
},
"apiVersion": {
"compatible": 5,
"target": 5,
"releaseType": "Beta1"
}
},
"deviceConfig": {
},
"module": {
"package": "com.javaaier.family.huawei",
"name": ".MyApplication",
"deviceType": [
"phone"
],
"distro": {
"deliveryWithInstall": true,
"moduleName": "entry",
"moduleType": "entry"
},
"abilities": [
{
"skills": [
{
"entities": [
"entity.system.home"
],
"actions": [
"action.system.home"
]
}
],
"orientation": "unspecified",
"name": "com.javaaier.family.huawei.MainAbility",
"icon": "$media:icon",
"description": "$string:mainability_description",
"label": "$string:app_name",
"type": "page",
"launchType": "standard"
},
{
"orientation": "unspecified",
"name": "com.javaaier.family.huawei.SimpleWebViewAbility",
"icon": "$media:icon",
"description": "$string:simplewebviewability_description",
"label": "$string:app_name",
"type": "page",
"launchType": "standard"
}
],
"reqPermissions": [
{
"name": "ohos.permission.INTERNET"
}
]
}
}
做者：人工智能姬
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