\u5c06\u4e00\u4e2a\u7f51\u7ad9\u505a\u6210APP\u53ef\u80fd\u6709\u591a\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff0c\u4f46\u6700\u5e38\u89c1\u7684\u662f\u901a\u8fc7WebView\u5c06\u7f51\u7ad9\u5d4c\u5165APP\u4e2d\u3002WebView\u662fAndroid\u5f00\u53d1\u4e2d\u5e38\u7528\u7684\u63a7\u4ef6\uff0c\u53ef\u4ee5\u5728APP\u4e2d\u663e\u793a\u7f51\u9875\u5185\u5bb9\uff0c\u5e76\u4e14\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c\u63a5\u53e3\uff0c\u5982\u63a7\u5236\u7f51\u9875\u7684\u524d\u8fdb\/\u540e\u9000\uff0c\u83b7\u53d6\u7f51\u9875\u6807\u9898\u3001URL\u7b49\u3002\u4ee5\u4e0b\u662f\u5c06\u7f51\u7ad9\u505a\u6210APP\u7684\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n
\u7b2c\u4e00\u6b65\uff1a\u521b\u5efaAndroid Studio\u9879\u76ee<\/p>\n
\u9996\u5148\u5728Android Studio\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u9879\u76ee\uff0c\u9009\u62e9Empty Activity\u4f5c\u4e3a\u9879\u76ee\u6a21\u677f\u3002\u7136\u540e\u5728\u8be5\u9879\u76ee\u4e2d\u521b\u5efa\u4e00\u4e2aWebView\u63a7\u4ef6\u7528\u4e8e\u627f\u8f7d\u7f51\u7ad9\u5185\u5bb9\u3002<\/p>\n
\u7b2c\u4e8c\u6b65\uff1a\u5728WebView\u4e2d\u663e\u793a\u7f51\u7ad9\u5185\u5bb9<\/p>\n
\u5728Activity\u4e2d\u6253\u5f00WebView\uff0c\u7136\u540e\u8ba9\u5176\u8f7d\u5165\u76ee\u6807\u7f51\u7ad9\u7684URL\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
“`java<\/p>\n
WebView webView = findViewById(R.id.webview);<\/p>\n
webView.loadUrl(“http:\/\/www.example.com”);<\/p>\n
“`<\/p>\n
\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u52a0\u8f7d\u7f51\u7edc\u8d44\u6e90\u9700\u8981\u4e00\u5b9a\u7684\u65f6\u95f4\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u5728WebView\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u8fdb\u5ea6\u6761\u4ee5\u63d0\u793a\u7528\u6237\u7f51\u9875\u6b63\u7f51\u9875\u505aapp<\/a>\u5728\u52a0\u8f7d\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
ProgressBar progressBar = findViewById(R.id.pr<\/p>\n
ogress_bar);<\/p>\n
webView.setWebChromeClient(new WebChromeClient() {<\/p>\n
@Override<\/p>\n
public void onProgressChanged(WebView view, int newProgress) {<\/p>\n
if (newProgress != 100) {<\/p>\n
progressBar.setVisibility(View.VISIBLE);<\/p>\n
progressBar.setProgress(newProgress);<\/p>\n
} else {<\/p>\n
progressBar.setVisibility(View.GONE);<\/p>\n
}<\/p>\n
}<\/p>\n
});<\/p>\n
“`<\/p>\n
\u7b2c\u4e09\u6b65\uff1a\u5904\u7406\u7f51\u7ad9\u4e2d\u7684\u94fe\u63a5<\/p>\n
\u5f53\u7528\u6237\u5728WebView\u4e2d\u70b9\u51fb\u7f51\u9875\u4e2d\u7684\u94fe\u63a5\u65f6\uff0cWebView\u9ed8\u8ba4\u4f1a\u6253\u5f00\u7cfb\u7edf\u6d4f\u89c8\u5668\u6765\u663e\u793a\u8be5\u94fe\u63a5\u5185\u5bb9\u3002\u4f46\u5728APP\u4e2d\uff0c\u6211\u4eec\u5e0c\u671b\u7528\u6237\u59cb\u7ec8\u5728APP\u5185\u90e8\u6d4f\u89c8\u7f51\u9875\uff0c\u56e0\u6b64\u9700\u8981\u62e6\u622aWebView\u4e2d\u7684\u94fe\u63a5\u3002\u5728WebView\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\u6765\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd\uff1a<\/p>\n
“`java<\/p>\n
webView.setWebViewClient(new WebViewClient() {<\/p>\n
@Override<\/p>\n
public boolean shouldOverrideUrlLoading(WebView view, String url) {<\/p>\n
view.loadUrl(url);<\/p>\n
return true;<\/p>\n
}<\/p>\n
});<\/p>\n
“`<\/p>\n
\u8fd9\u6bb5\u4ee3\u7801\u4e2d\u7684shouldOverrideUrlLoading()\u65b9\u6cd5\u4f1a\u5728\u7528\u6237\u70b9\u51fb\u94fe\u63a5\u65f6\u88ab\u8c03\u7528\uff0c\u5c06\u76ee\u6807\u94fe\u63a5\u52a0\u8f7d\u5230\u5f53\u524d\u7684WebView\u4e2d\u3002<\/p>\n
\u7b2c\u56db\u6b65\uff1a\u6dfb\u52a0\u4e0a\u4e0b\u6587\u83dc\u5355<\/p>\n
\u4e0e\u7f51\u9875\u76f8\u6bd4\uff0cAPP\u7684\u7528\u6237\u4f53\u9a8c\u66f4\u52a0\u91cd\u89c6\u4ea4\u4e92\u548c\u64cd\u4f5c\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u4e3aWebView\u6dfb\u52a0\u4e0a\u4e0b\u6587\u83dc\u5355\uff0c\u4ee5\u65b9\u4fbf\u7528\u6237\u8fdb\u884c\u4e00\u4e9b\u5e38\u7528\u64cd\u4f5c\uff0c\u5982\u590d\u5236\u94fe\u63a5\u6216\u7f51\u9875\u5185\u5bb9\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
“`java<\/p>\n
webView.setOnLongClickListener(new View.OnLongClickListener() {<\/p>\n
@Override<\/p>\n
public boolean onLongClick(View v) {<\/p>\n
HitTestResult result = webView.getHitTestResult();<\/p>\n
if (result.getType() == HitTestResult.SRC_ANCHOR_TYPE) {<\/p>\n
final String url = result.getExtra();<\/p>\n
AlertDialog dialog = new AlertDialog.Builder(MainActivity.this)<\/p>\n
.setMessage(url)<\/p>\n
.setPositiveButton(“\u590d\u5236\u94fe\u63a5”, new DialogInterface.OnClickListener() {<\/p>\n
@Override<\/p>\n
public void onClick(DialogInterface dialog, int which) {<\/p>\n
ClipboardManager cm = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);<\/p>\n
cm.setPrimaryClip(ClipData.newPlainText(null, url));<\/p>\n
}<\/p>\n
\u7f51\u7ad9\u505aapp<\/a> })<\/p>\n
.setNegativeButton(“\u53d6\u6d88”, null)<\/p>\n
\u7b2c\u4e94\u6b65\uff1a\u5904\u7406\u7f51\u7ad9\u4e2d\u7684\u56fe\u7247\u7b49\u8d44\u6e90<\/p>\n
webView.setWebViewClient(new WebViewClient() {<\/p>\n
public void onPageFinished(WebView view, String url) {<\/p>\n
super.onPageFinished(view, url);<\/p>\n
new DownloadTask().execute(url); <\/p>\n
class DownloadTask extends AsyncTask {<\/p>\n
protected Void doInBackground(String… urls) {<\/p>\n
Document doc = Jsoup.connect(url).get();<\/p>\n
Elements elements = doc.getElementsByTag(“img”);<\/p>\n
for (Element element : elements) {<\/p>\n
String imgUrl = element.absUrl(“src”);<\/p>\n
if (!imgUrl.startsWith(“http”)) {<\/p>\n
String fileName = Paths.get(imgUrl).getFileName().toString();<\/p>\n
File file = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), fileName);<\/p>\n
URLConnection conn = new URL(imgUrl).openConnection();<\/p>\n
InputStream in = conn.getInputStream();<\/p>\n
OutputStream out = new FileOutputStream(file);<\/p>\n
byte[] buffer = new byte[4096];<\/p>\n
while ((len = in.read(buffer)) > 0) {<\/p>\n
out.write(buffer, 0, len);<\/p>\n