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POCalling javascript functions in a webview from activity class
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2013-04-06T19:14:41.310
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2011-10-27T13:34:14.720
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2011-11-07T12:04:10.220
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2011-11-07T12:04:10.220
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Edit: This snipped worked in the end. I had been trying this before but was actually experiencing a scoping issue with my javascript. I had appBack() defined in document.onready. Simply re-scoping that function to *window.*appBack = function(). Done the business. Hope this helps someone. <pre><code>public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { WebView.loadUrl("javascript:appBack()"); return true; } return super.onKeyDown(keyCode, event); } </code></pre> <hr> Within a webview application the back navigation is handled with a custom JS function appBack() I've been trying to figure out a way to intercept the android physical back button and call that javascript function instead. Here is my activity file. Its very basic, sets up a webview and listens for the back button click. Currently when the user clicks this physical back button it runs mWebView.goBack(). Which is where I would like to perform javascript:appBack() <pre><code>package com.stgeorgeplc.app; import android.app.Activity; import android.os.Bundle; import android.view.KeyEvent; import android.webkit.WebView; public class StGeorgePLCliteActivity extends Activity { /** Called when the activity is first created. */ WebView mWebView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mWebView = (WebView) findViewById(R.id.webview); mWebView.getSettings().setJavaScriptEnabled(true); mWebView.getSettings().setBuiltInZoomControls(true); mWebView.loadUrl("file:///android_asset/www/index.html"); } public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { mWebView.goBack(); return true; } return super.onKeyDown(keyCode, event); } } </code></pre>
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<javascript><android><interface><webview><onkeydown>
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Calling javascript functions in a webview from activity class
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