-
打开官网,找到WebView的文档(模拟器不支持)
鸿蒙webview的开发指南(原始链接,方便大家识别并点击):https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ui-java-component-webview-0000001092715158
![001 - 使用鸿蒙WebView创建简单浏览器 step 1]()
2. 创建一个Page Ability,把基本布局弄好
![001 - 使用鸿蒙WebView创建简单浏览器 step 1]()
下面是代码
<?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
| 序号 |
按钮 |
功能 |
| 1 |
跳转 |
把文本框中的网址打开 |
| 2 |
后退 |
在webview中点了新链接后,想回去看一看 |
| 3 |
刷新 |
以前的人在网络不好,美女图片出不来的时候用,现在一般是发了一篇帖子后,作者会没事点一下,看看有没有人点赞 |
| 4 |
前进 |
跟后退是关联用的,就是点了新链接,回去看了看后,还是觉得新链接更好看,就又要前进. |
代码
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
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
//允许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);
// 标题变更时自定义处理
}
@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);
}
// 加载进度变更时自定义处理
}
});
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完事?or完了还有事?
从上面拷代码的话,估计完事了.但是,我是用的回忆,但是代码却没有回退,所以我还是有必要在这儿把步骤中的问题说一说,方便不拷代码的同学也能跑出一个界面.主要体现如下:
-
权限配置,不多说
"reqPermissions": [
{
"name": "ohos.permission.INTERNET"
}
]
-
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>
-
-
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)
完事效果:https://www.bilibili.com/video/BV1tK4y1o7Hz/
-
完整代码
-
布局
序号为2的步骤中贴全了
-
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>
-
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);
//允许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);
// 标题变更时自定义处理
}
@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);
}
// 加载进度变更时自定义处理
}
});
}
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"
}
]
}
}
作者：人工智能姬
想了解更多内容，请访问51CTO和华为合作共建的鸿蒙社区：https://harmonyos.51cto.com#kyzg
