Android Development: The WebView of controls

How do I open a Web site in an android application? Google has provided us with a solution, now let's take a look at the WebView control.

In order to facilitate the summary, to achieve the following effect as the main line, to summarize:

First we look at its layout file, the entire interface is divided into two parts, the top is a similar to the title bar effect, it is composed of two button buttons and a TextView, the lower part is a WebView control, Remove the system title through Androidmanifest.xml (if you don't understand, check my previous blog: Android Common Properties), has reached the above image effect. To facilitate self-study, the following code:

2. <linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
4. Xmlns:tools= "Http://schemas.android.com/tools"
6. Android:layout_width= "Match_parent"
8. android:layout_height= "Match_parent"
10. android:orientation= "Vertical"
12. Tools:context= ". Mainactivity ">
16. <linearlayout
18. Android:layout_width= "Fill_parent"
20. android:layout_height= "Wrap_content"
22. android:weightsum= "1" >
24. <button
26. Android:id= "@+id/quit"
28. Android:layout_gravity= "left"
30. Android:layout_width= "Wrap_content"
32. android:layout_height= "Wrap_content"
34. android:text= "Back"/>
36. <textview
38. Android:id= "@+id/web"
40. android:layout_gravity= "Center"
42. android:gravity= "Center"
44. Android:layout_width= "222DP"
46. android:layout_height= "Wrap_content"
48. android:layout_weight= "1.13"/>
50. <button
52. Android:id= "@+id/news"
54. Android:layout_gravity= "Right"
56. Android:layout_width= "Wrap_content"
58. android:layout_height= "Wrap_content"
60. android:text= "Refresh"/>
62. </LinearLayout>
64. <webview
66. Android:id= "@+id/webview"
68. Android:layout_width= "Fill_parent"
70. android:layout_height= "Fill_parent"/>
74. </LinearLayout>

Finally we start writing our Mainactivity.java:

2. public class Mainactivity extends activity {
4. Private TextView Mtextview;
6. Private WebView Mwebview;
8. Private Button Mbreak;
10. Private Button mnews;
12. @Override
14. protected void OnCreate (Bundle savedinstancestate) {
16. Super.oncreate (savedinstancestate);
18. Setcontentview (R.layout.activity_main);
20. Init ();
22. }
24. public void init () {
26. Mtextview = (TextView) Findviewbyid (R.id.web);
28. Mwebview = (webview) Findviewbyid (R.id.webview);
30. Mbreak = (Button) Findviewbyid (r.id.quit);
32. Mnews = (Button) Findviewbyid (r.id.news);
34. Mbreak.setonclicklistener (New MyListener ());
36. Mnews.setonclicklistener (New MyListener ());
38. Mwebview.loadurl ("http://www.baidu.com/");/Set Open URLs
42. Mwebview.setwebchromeclient (New Webchromeclient () {
44. @Override
46. public void Onreceivedtitle (WebView view, String title) {
48. Super.onreceivedtitle (view, title);
50. Mtextview.settext (title);//Display open URL information
52. }
54. });
58. Mwebview.setwebviewclient (New Webviewclient () {
60. @Override
62. public boolean shouldoverrideurlloading (webview view, String URL) {
64. View.loadurl (URL);
66. Return super.shouldoverrideurlloading (view, URL);
68. }
70. });
72. }
76. button click event Monitor
78. Class MyListener implements view.onclicklistener{
80. @Override
82. public void OnClick (view view) {
84. Switch (View.getid ()) {
86. Case R.id.quit:
88. Finish ();
90. Break
92. Case R.id.news:
94. Mwebview.reload ();
96. Break
98. }
100. }
102. }

Finally, don't forget to add the use of the network statement in Androidmanifest.xml: <uses-permission android:name= "Android.permission.INTERNET"/>

Finished, our WebView preliminary introduction to this end.