从 Android 中的 HTML 页面拨打电话号码时获取 net::ERR_UNKNOWN_URL_SCHEME
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Getting net::ERR_UNKNOWN_URL_SCHEME while calling telephone number from HTML page in Android
提问by Karthik
I am getting "net::ERR_UNKNOWN_URL_SCHEME" while calling a telephone number option from an HTML page in Android. Do I need to add any permission(s) in the manifest to get this working? I haven't added anything in the manifest so far. Here's the HTML Code:
我在从 Android 的 HTML 页面调用电话号码选项时收到“net::ERR_UNKNOWN_URL_SCHEME”。我是否需要在清单中添加任何权限才能使其正常工作？到目前为止，我还没有在清单中添加任何内容。这是 HTML 代码：
<a href="tel:+1800229933">Call us free!</a>
<a href="tel:+1800229933">Call us free!</a>
回答by David M
The following should work and not require any permissions in the manifest (basically override shouldOverrideUrlLoading and handle links separately from tel, mailto, etc.):
以下应该可以工作并且不需要清单中的任何权限（基本上覆盖 shouldOverrideUrlLoading 并处理与 tel、mailto 等分开的链接）：
mWebView = (WebView) findViewById(R.id.web_view);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.setWebViewClient(new WebViewClient(){
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if( url.startsWith("http:") || url.startsWith("https:") ) {
return false;
}
// Otherwise allow the OS to handle things like tel, mailto, etc.
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity( intent );
return true;
}
});
mWebView.loadUrl(url);
Also, note that in the above snippet I am enabling JavaScript, which you will also most likely want, but if for some reason you don't, just remove those 2 lines.
另外，请注意，在上面的代码段中，我启用了 JavaScript，您也很可能需要它，但如果由于某种原因您不这样做，只需删除这 2 行。
回答by Sly_cardinal
I had this issue occurring with mailto:and tel:links inside an iframe (in Chrome, not a webview). Clicking the links would show the grey "page not found" page and inspecting the page showed it had a ERR_UNKNOWN_URL_SCHEME error.
我在iframe（在 Chrome 中，而不是 webview 中）中出现了这个问题mailto:和tel:链接。单击链接将显示灰色的“找不到页面”页面，检查该页面会显示它有一个 ERR_UNKNOWN_URL_SCHEME 错误。
Adding target="_blank", as suggested by this discussion of the issuefixed the problem for me.
添加target="_blank"，正如对问题的讨论所建议的那样为我解决了这个问题。
回答by Haresh Chhelana
Try this way,hope this will help you to solve your problem.
试试这个方法，希望这能帮助你解决你的问题。
main.xml
主文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
MyActivity.java
我的活动.java
public class MyActivity extends Activity {
private WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView) findViewById(R.id.webView);
webView.loadData("<a href=\"tel:+1800229933\">Call us free!</a>", "text/html", "utf-8");
}
}
Please add this permission in AndroidManifest.xml
请在 AndroidManifest.xml 中添加此权限
<uses-permission android:name="android.permission.CALL_PHONE"/>
