Android WebView err_unknown_url_scheme [英] Android WebView err_unknown_url_scheme

问题描述

使用下面的简单代码，我可以正确加载我的url，但是，当我尝试点击以 mailto开头的html链接时，我收到了ERR_UNKNOWN_URL_SCHEME： whatsapp： >和 tg：（电报）。

任何人都可以帮我解决这个问题吗？不幸的是我根本不知道Java：（$ / b>

谢谢。

  import android.app.Activity; 
 import android.os.Bundle; 
 import android.webkit.WebSettings; 
 import android.webkit.WebView; 
 import android.webkit。 WebViewClient; 
 
 public class MainActivity extends Activity {
 
 private WebView mWebView; 
 $ b $ @Override 
 protected void onCreate（Bundle savedInstanceState）{ 
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_main）; 
 
 mWebView =（WebView）findViewById（R.id.activity_main_webview）; 
 
 //强制链接和重定向在WebView中而不是在浏览器中打开
 mWebView.setWebViewClient（新的WebViewClient（））; 
 
 //启用Javascript 
 WebSettings webSettings = mWebView.getSettings（）; 
 webSettings.setJavaScriptEnabled（true）; 
 
 //使用远程资源
 mWebView.loadUrl（ http://myexample.com）; 
 
 
 
 $ div $解析方案

你必须在webview中设置一个客户端并将它们传递给intent



  webView.setWebViewClient（new WebViewClient（）{
 @Override 
 public boolean shouldOverrideUrlLoading（WebView view，String url）{$ b $ if（URLUtil.isNetworkUrl（url））{
 return false; 
} 
 if（ appInstalledOrNot（url））{
 Intent intent = new Intent（Intent.ACTION_VIEW，Uri.parse（url））; 
 startActivity（intent）; 
} else {
 //如果未安装应用程序，请执行操作
} 
 return true; 
} 
 
}）; 
} 
  

您可以有一个方法来检查应用程序是否已安装

  private boolean appInstalledOrNot（String uri）{
 PackageManager pm = getPackageManager（）; 
尝试{
 pm.getPackageInfo（uri，PackageManager.GET_ACTIVITIES）; 
返回true; 
 catch（PackageManager.NameNotFoundException e）{
} 
 
 return false; 
} 
  




With the simple below code I can get my url loaded correctly, but, I get "ERR_UNKNOWN_URL_SCHEME" when trying to tap on html links that starts with mailto: whatsapp: and tg: (Telegram).

Anyone can help me to fix this please? Unfortunately I do not know Java at all :(

Thanks.

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends Activity {

    private WebView mWebView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mWebView = (WebView) findViewById(R.id.activity_main_webview);

        // Force links and redirects to open in the WebView instead of in a browser
        mWebView.setWebViewClient(new WebViewClient());

        // Enable Javascript
        WebSettings webSettings = mWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);

        // Use remote resource
        mWebView.loadUrl("http://myexample.com");
    }
}

解决方案

You have to set a client in the webview and pass these to an intent

webView.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            if( URLUtil.isNetworkUrl(url) ) {
                return false;
            }
            if (appInstalledOrNot(url)) {
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                startActivity( intent );
            } else {
                // do something if app is not installed
            }
            return true;
        }

    });
}

You can have a method to check if app is installed

private boolean appInstalledOrNot(String uri) {
        PackageManager pm = getPackageManager();
        try {
            pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
            return true;
        } catch (PackageManager.NameNotFoundException e) {
        }

        return false;
    }

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