WebView运用

WebView使用:

Java代码??

1. /**?Called?when?the?activity?is?first?created.?*/??
2. ????@Override??
3. ????public?void?onCreate(Bundle?savedInstanceState)?{??
4. ????????super.onCreate(savedInstanceState);??
5. ??
6. ????????//?在标题栏上显示进度??
7. ????????getWindow().requestFeature(Window.FEATURE_PROGRESS);??
8. ??
9. ????????//?定义WebView??
10. ????????webview?=?new?WebView(this);??
11. ????????setContentView(webview);??
12. ??
13. ????????//?滚动条风格??
14. ????????webview.setScrollBarStyle(0);??
15. ??
16. ????????//?设置JS可用??
17. ????????webview.getSettings().setJavaScriptEnabled(true);??
18. ??
19. ????????final?Activity?activity?=?this;??
20. ??
21. ????????/*?
22. ?????????*?WebChromeClient类:用来辅助WebView处理JavaScript的对话框,网站图标,网站Title,加载进度等?
23. ?????????*?通过setWebChromeClient调协WebChromeClient类?
24. ?????????*/??
25. ????????webview.setWebChromeClient(new?WebChromeClient()?{??
26. ????????????//?加载进度中,100时停止??
27. ????????????public?void?onProgressChanged(WebView?view,?int?progress)?{??
28. ????????????????activity.setProgress(progress?*?100);??
29. ????????????}??
30. ??
31. ????????????@Override??
32. ????????????public?void?onReceivedTitle(WebView?view,?String?title)?{??
33. ????????????????activity.setTitle(title);??
34. ????????????}??
35. ??
36. ????????});??
37. ??
38. ????????/*?
39. ?????????*?WebViewClient类:?用来辅助WebView处理各种通知,请求等事件的类?
40. ?????????*?通过setWebViewClient设置WebViewClient类?
41. ?????????*/??
42. ????????webview.setWebViewClient(new?WebViewClient()?{??
43. ????????????//?页面加载失败??
44. ????????????public?void?onReceivedError(WebView?view,?int?errorCode,??
45. ????????????????????String?description,?String?failingUrl)?{??
46. ????????????????Toast.makeText(activity,?"异常:!?"?+?description,??
47. ????????????????????????Toast.LENGTH_LONG).show();??
48. ????????????}??
49. ??
50. ????????});??
51. ????????webview.loadUrl(Url);??
52. ??
53. ????}??
54. ??
55. ????/*?
56. ?????*?通过WebView的goBack(),goForward()方法设置其前进和后退?
57. ?????*/??
58. ????@Override??
59. ????public?boolean?onKeyDown(int?keyCode,?KeyEvent?event)?{??
60. ????????//?TODO?Auto-generated?method?stub??
61. ????????if?(keyCode?==?KeyEvent.KEYCODE_BACK?&&?webview.canGoBack())?{??
62. ????????????//?返回前一个页面??
63. ????????????webview.goBack();??
64. ????????????return?true;??
65. ????????}??
66. ????????return?super.onKeyDown(keyCode,?event);??
67. ????}??

layout:

添加权限:

<uses-permission android:name="android.permission.INTERNET"/>

?

转载至：http://www.cnblogs.com/jdsjlzx/archive/2011/07/25/2116355.html