Fragment webView for Button（呼叫或拨号）[Android Studio]

Posted 2023-04-15

【中文标题】Fragment webView for Button（呼叫或拨号）[Android Studio]

【英文标题】：Fragment webView for Button (to call or dial a number) [Android Studio]

【发布时间】：2020-05-11 10:26:36

【问题描述】：

我已成功将WebView 添加到片段中，以加载网站。但是，网站上的某些元素（例如按钮）链接到tel= 方案，导致按下时出现err_unknown_url_scheme 错误。我该如何支持？

这是我的代码：

fragment_notification.xml

android:layout_
android:layout_>

<WebView
    android:layout_
    android:id="@+id/webView3"
    android:layout_>
</WebView>

NotificationsFragment.java

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import com.alidmisli.gcsdriver.R;


public class NotificationsFragment extends Fragment 

    public NotificationsFragment() 

    

    public View onCreateView(@NonNull LayoutInflater inflater,
                             ViewGroup container, Bundle savedInstanceState) 

        View v = inflater.inflate(R.layout.fragment_notifications, container, false );

        WebView webView= (WebView)v.findViewById(R.id.webView3);
        webView.getSettings().setjavascriptEnabled(true);
        webView.setWebViewClient(new WebViewClient());
        webView.loadUrl("http://gcs-bn.com/sos.html/");

        return v;
    

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.alidmisli.gcsdriver">

    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
    <uses-permission android:name="android.permission.CALL_PHONE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

【参考方案1】：

这样设置webviewclient

webView.setWebViewClient(new CustomWebViewClient());

String TELPREFIX = "tel:"

class CustomWebViewClient extends WebViewClient 
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) 
            if(url.startsWith(TELPREFIX)) 
                Intent intent = new Intent(Intent.ACTION_DIAL);
                intent.setData(Uri.parse(url));
                startActivity(intent);
                return true;
            
            return super.shouldOverrideUrlLoading(view, url);