01.package com.myapp;
02.
03.import android.app.Activity;
04.import android.content.Context;
05.import android.os.Bundle;
06.import android.view.Menu;
07.import android.webkit.WebView;
08.import android.widget.Toast;
09.
10.
11.public class MainActivity extends Activity{
12.
13. @Override
14. public void onCreate(Bundle savedInstanceState) {
15. super.onCreate(savedInstanceState);
16. setContentView(R.layout.activity_main);
17.
18.
19. WebView WebViw = (WebView) findViewById(R.id.webView1);
20. WebViw.getSettings().setJavaScriptEnabled(true);
21. WebViw.addJavascriptInterface(new JavaScriptInterface(this), "Android");
22.
23. StringBuilder html = new StringBuilder();
24. html.append("<html><body><h2>Test WebView</h2>");
25. html.append("<input type=\"text\" id=\"txtName\" />");
26. html.append("<input type=\"button\" value=\"Say hello\" onClick=\"showAndroidToast(document.getElementById('txtName').value)\" />");
27.
28. html.append("<script type=\"text/javascript\">");
29. html.append(" function showAndroidToast(toast) {");
30. html.append(" Android.showToast(toast);");
31. html.append(" }");
32. html.append("</script>");
33.
34. WebViw.loadData(html.toString(), "text/html", "UTF-8");
35.
36. }
37.
38. public class JavaScriptInterface {
39. Context mContext;
40.
41.
42. JavaScriptInterface(Context c) {
43. mContext = c;
44. }
45.
46.
47. public void showToast(String toast) {
48. Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
49. }
50. }
51.
52. @Override
53. public boolean onCreateOptionsMenu(Menu menu) {
54. getMenuInflater().inflate(R.menu.activity_main, menu);
55. return true;
56. }
57.
58.}
ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน 
