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How To Detect Div Tag From Html File?

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I am loading html page in web view. In html there is a button; on click of that, I have to start a new activity. I have displayed html file but how to detect the click of button ?

Solution 1:

use this :

Html:

<divid="button"onclick="Helper.methodeone()"><ul><li><atitle="Forming a Habit"href="Forming_Habit.html">
         More
         <spanclass="arrows">&nbsp;&#187;</span></a></li></ul>

on java :

    webView.setWebViewClient(newMyWebViewClient());
    WebSettingswebSetting= webView.getSettings();
    webSetting.setJavaScriptEnabled(true);
    webSetting.setPluginState(WebSettings.PluginState.ON_DEMAND);
    //webSetting.setBuiltInZoomControls(true);
    webSetting.setAllowContentAccess(true);
    web.addJavascriptInterface(newSamlplejavaconect(), "Helper");//NEW LINE
    webSetting.setDefaultTextEncodingName("utf-8");
    webView.loadUrl("file:///android_asset/"+htmlFile);

And in below class you can manage activity :

publicclassSamlplejavaconect {
    publicvoidmethodeone() {
        Toast.makeText(this, "Hi", Toast.LENGTH_LONG).show();//FOR EXAMPLE
    }
}

Solution 2:

Try this

MainActivity.java

publicclassMainActivityextendsActivity {
WebView webView;
JavaScriptInterface jsInterface;

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    webView = (WebView) findViewById(R.id.webView1);
    WebSettingswebSettings= webView.getSettings();
    // enable JavaScript
    webView.getSettings().setJavaScriptEnabled(true);
    webView.setWebChromeClient(newWebChromeClient() {
    });
    jsInterface = newJavaScriptInterface(MainActivity.this, webView);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.addJavascriptInterface(jsInterface, "AndroidFunction");
    webView.loadUrl("file:///android_asset/book.html");
}

publicclassJavaScriptInterface {
    private Activity activity;
    WebView wb;

    publicJavaScriptInterface(Activity activiy, WebView wb) {
        this.activity = activiy;
        this.wb = wb;
    }
    @JavascriptInterfacepublicvoidactivity() {
        try {
            Classactivity= Class.forName("com.example.classname");
            IntentmyIntent=newIntent(getApplicationContext(), activity);
            startActivity(myIntent);
            finish();

        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

}

}

book.html

<!DOCTYPE html><html><body><buttontype="button"onclick="startactivity()">Click Me!</button><script>functionstartactivity() {
   AndroidFunction.activity();
}
</script></body></html>

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