鸿蒙WebView的使用方式.zip

package com.liyuanjinglyj.javacarddemo.slice; import com.liyuanjinglyj.javacarddemo.ResourceTable; import ohos.aafwk.ability.AbilitySlice; import ohos.aafwk.content.Intent; import ohos.agp.components.Button; import ohos.agp.components.Component; import ohos.agp.components.webengine.*; import ohos.agp.utils.TextTool; import ohos.agp.window.dialog.ToastDialog; import ohos.global.resource.Resource; import ohos.hiviewdfx.HiLog; import ohos.hiviewdfx.HiLogLabel; import ohos.utils.net.Uri; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.net.URLConnection; public class MainAbilitySlice extends AbilitySlice { HiLogLabel TAG = new HiLogLabel(HiLog.LOG_APP, 0x00201, "TAG"); private WebView webView; private Button button; @Override public void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_ability_main); this.webView=(WebView)findComponentById(ResourceTable.Id_ability_main_webview); this.button=(Button)findComponentById(ResourceTable.Id_ability_main_button); this.webView.setWebAgent(new WebAgent(){ @Override public boolean isNeedLoadUrl(WebView webView, ResourceRequest request) { return super.isNeedLoadUrl(webView, request); } @Override public ResourceResponse processResourceRequest(WebView webView, ResourceRequest request) { final String authority = "example.com"; final String rawFile = "/rawfile/"; final String local = "/local/"; Uri requestUri = request.getRequestUrl(); if (authority.equals(requestUri.getDecodedAuthority())) { String path = requestUri.getDecodedPath(); if (TextTool.isNullOrEmpty(path)) { return super.processResourceRequest(webView, request); } if (path.startsWith(rawFile)) { // 根据自定义规则访问资源文件 String rawFilePath = "entry/resources/rawfile/" + path.replace(rawFile, ""); String mimeType = URLConnection.guessContentTypeFromName(rawFilePath); try { Resource resource = getResourceManager().getRawFileEntry(rawFilePath).openRawFile(); ResourceResponse response = new ResourceResponse(mimeType, resource, null); return response; } catch (IOException e) { HiLog.info(TAG, "open raw file failed"); } } if (path.startsWith(local)) { // 根据自定义规则访问本地文件 String localFile = getContext().getFilesDir() + path.replace(local, "/"); HiLog.info(TAG, "open local file " + localFile); File file = new File(localFile); if (!file.exists()) { HiLog.info(TAG, "file not exists"); return super.processResourceRequest(webView, request); } String mimeType = URLConnection.guessContentTypeFromName(localFile); try { InputStream inputStream = new FileInputStream(file); ResourceResponse response = new ResourceResponse(mimeType, inputStream, null); return response; } catch (IOException e) { HiLog.info(TAG, "open local file failed"); } } } return super.processResourceRequest(webView, request); } }); this.webView.getWebConfig().setJavaScriptPermit(true); this.webView.load("https://example.com/rawfile/example.html"); this.button.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) { webView.executeJs("javascript:aAddb(5,5)", new AsyncCallback<String>() { @Override public void onReceive(String msg) { new ToastDialog(getContext()) .setText("a+b="+msg) .show(); } }); } }); final String jsName = "JsCallbackToApp"; webView.addJsCallback(jsName, new JsCallback() { @Override public String onCallback(String msg) { new ToastDialog(getContext()) .setText(msg) .show(); return "jsResult"; } }); } @Override public void onActive() { super.onActive(); } @Override public void onForeground(Intent intent) { super.onForeground(intent); } }