为从Webview单击的每个列表项打开一个新活动

Question

I am loading html file from asset folder in a webview. There is an unordered list. I want to open a new activity when each list item is clicked. This is what I was trying so far. But it shows file not found error. I am attaching a picture of my desired scenario. Please have a look at that. It will help you understand my problem. Wanted Scenario

wv_topic_details = findViewById(R.id.wv_topic_details);

    wv_topic_details.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
            Intent intent = new Intent(TopicDetails.this, PrachinYug.class);
            startActivity(intent);
            return true;
        }
    });

    wv_topic_details.loadUrl(file_path);

    webSettings = wv_topic_details.getSettings();
    webSettings.setBuiltInZoomControls(true); //enable zoom facility
    webSettings.setDisplayZoomControls(false); //hide the zoom control switch

AndroidManifest.xml

<activity
        android:name=".TopicDetails"
        android:parentActivityName=".MainActivity">
        <intent-filter>
            <category android:name="android.intent.category.DEFAULT"/>
            <action android:name="android.intent.action.VIEW"/>
            <data android:scheme="prachin_yug"/>
        </intent-filter>
    </activity>
    <activity
        android:name=".PrachinYug"
        android:label="@string/prachin_yug"
        android:parentActivityName=".MainActivity" >
        <intent-filter>
            <category android:name="android.intent.category.DEFAULT"/>
            <action android:name="android.intent.action.VIEW"/>
            <data android:scheme="prachin_yug"/>
        </intent-filter>
    </activity>
<activity
        android:name=".MadhyaYug"
        android:label="@string/madhya_yug"
        android:parentActivityName=".MainActivity" >
        <intent-filter>
            <category android:name="android.intent.category.DEFAULT"/>
            <action android:name="android.intent.action.VIEW"/>
            <data android:scheme="madhya_yug"/>
        </intent-filter>
    </activity>

<activity
        android:name=".AdhunikYug"
        android:label="@string/adhunik_yug"
        android:parentActivityName=".MainActivity">
        <intent-filter>
            <category android:name="android.intent.category.DEFAULT"/>
            <action android:name="android.intent.action.VIEW"/>
            <data android:scheme="adhunik_yug"/>
        </intent-filter>
    </activity>

This is the html file. This file is in the TopicDetails class. I want to open PrachinYug, Madhyaug and AdhunikYug class when respective item is clicked in the list. The target classes are not webview. They are android listview.

<p>
    আনুমানিক ....... করা যায়। যথা-
</p>
<ul>
    <li><a href="prachin_yug">প্রাচীন যুগ</a></li>
    <li><a href="madhya_yug">মধ্যযুগ</a></li>
    <li><a href="adhunik_yug">আধুনিক যুগ</a></li>
</ul>

Answer 1

Main Activity:

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

        WebView webview = findViewById(R.id.webview);
        webview.loadUrl("file:///android_asset/yourfile.html");
        webview.setWebViewClient(new WebViewClient() {
            public boolean shouldOverrideUrlLoading(WebView view, String url{
                if (url.equals("Your URL inside yourfile.html")) {
                    startActivity(new Intent(this, YourActivity.class));
                }
                return true;
            }
        });
    }

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout   
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <WebView
        android:id="@+id/webview_contributors"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>