1 First is how to use the Web page in your own app, so that you can quickly update the interface without having to upgrade the client, the method is as follows:
XML file:
<WebView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/web_v" />
2 binding Web pages in activity:
public class MainActivity extends ActionBarActivity {
private WebView web;
@Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView (R.layout.activity_main);
web = (WebView) findViewById (R.id.web_v);
// equivalent to the browser
WebSettings webset = web.getSettings ();
// Can set web properties
webset.setJavaScriptEnabled (true);
// The following is the method called by the javascript in the webpage, that is, the demo is the class name that defines the anonymous inside, which implements the javascript in the webpage
// method to call
web.addJavascriptInterface (new Object () {// Provide the use interface for JavaScript code in the web control
@JavascriptInterface // pay attention to this
public void callous ()
{
System.out.println ("hahahahaha");
Intent intent = new Intent ();
intent.setAction (Intent.ACTION_CALL);
intent.setData (Uri.parse ("tel:" + "123123"));
startActivity (intent);
}
}
, "demo");
String url = new String ("http://192.168.61.173:8080/myweb/zp.html");
// Load the web page into the web control
web.loadUrl (url);
}
}
3, the page inside the button to use the hyperlink, the method is as follows:
<p><a onclick= "window.demo.callous ()" > Contact Us </a></p>
Where the demo is the class name, callous is the method of the demo class, the front window is the tag, plus not so-called. If there is href= "" then open this page by default, the browser will start, so do not href= "" this property.
4. How to invoke JavaScript functions in Java code to display the original hidden content:
(1) First add a control to the app:
<LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" android: layout_width = "match_parent" android: layout_height = "match_parent" android: orientation = "vertical" tools: context = "com.example.appdemo.MainActivity $ PlaceholderFragment" android: gravity = "center_horizontal" > <WebView android: layout_weight = "1" android: layout_width = "fill_parent" android: layout_height = "fill_parent" android: id = "@ + id / web_v" /> <Button android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: id = "@ + id / bt" android: text = "Get Password" android: layout_weight = "0" android: onClick = "getpassword" /> </ LinearLayout>
(2) Then the page body is written in the following code, that is, the content of the Click event response, that is, the ID for content display password,<content> can be placed in any location of the Web page
<script> function fillContent(){ document.getElementById("content").innerHTML="隐藏密码为：1234567890" } </script> <body> <p id="content"></p>
(3) Add the following code to the activity's Click event
public void getpassword(View v) { web.loadUrl("javascript:fillContent()"); }}
Shown below: 1 after running, 2 is click on "Get password after page:"
How to use a Web page to develop your own app, a button in a Web page that binds to your own Java code to implement a call that JavaScript code calls Java code, and Java code to invoke JavaScript code
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