All geek questions in one place

Android Studio - How to download HTML5 content from a local path using Webview?

On the official Android developer page theres this topic Creating Web Applications in WebView http://developer.android.com/guide/webapps/webview.html

I would like to know how to proceed if the content is loaded from a local html folder saved in src folder

I could not find any sample code or sample to download.

Im using android studio

+4
source share
2 answers

Call JavaScript inside WebView from Android activity.

http://android-er.blogspot.com/2011/10/call-javascript-inside-webview-from.html

It is very good!

/assets/mypage.html

<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width; user-scalable=0;" /> <title>My HTML</title> </head> <body> <h1>MyHTML</h1> <p id="mytext">Hello!</p> <input type="button" value="Say hello" onClick="showAndroidToast('Hello Android!')" /> <input type="button" value="Open Dialog" onClick="openAndroidDialog()" /> <script language="javascript"> function showAndroidToast(toast) { AndroidFunction.showToast(toast); } function openAndroidDialog() { AndroidFunction.openAndroidDialog(); } function callFromActivity(msg){ document.getElementById("mytext").innerHTML = msg; } </script> </body> </html>

main.xml

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <EditText android:id="@+id/msg" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/sendmsg" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Msg to JavaScript" /> <WebView android:id="@+id/mybrowser" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout>

Main code:

 import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.os.Bundle; import android.view.View; import android.webkit.WebView; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class AndroidHTMLActivity extends Activity { WebView myBrowser; EditText Msg; Button btnSendMsg; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myBrowser = (WebView)findViewById(R.id.mybrowser); final MyJavaScriptInterface myJavaScriptInterface = new MyJavaScriptInterface(this); myBrowser.addJavascriptInterface(myJavaScriptInterface, "AndroidFunction"); myBrowser.getSettings().setJavaScriptEnabled(true); myBrowser.loadUrl("file:///android_asset/mypage.html"); Msg = (EditText)findViewById(R.id.msg); btnSendMsg = (Button)findViewById(R.id.sendmsg); btnSendMsg.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub String msgToSend = Msg.getText().toString(); myBrowser.loadUrl("javascript:callFromActivity(\""+msgToSend+"\")"); }}); } public class MyJavaScriptInterface { Context mContext; MyJavaScriptInterface(Context c) { mContext = c; } public void showToast(String toast){ Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show(); } public void openAndroidDialog(){ AlertDialog.Builder myDialog = new AlertDialog.Builder(AndroidHTMLActivity.this); myDialog.setTitle("DANGER!"); myDialog.setMessage("You can do what you want!"); myDialog.setPositiveButton("ON", null); myDialog.show(); } } }
+9
source

Paste the html files into the resource folder created (or found) in the project root directory

Accessing them using loadUrl ():

 webView.loadUrl("file:///android_asset/index.htm");

where index.htm is the name of the file.

+1
source

Source: https://habr.com/ru/post/1500400/

More articles:


All Articles