android 使用html5作布局文件: webview跟javascript交互
- - 移动开发 - ITeye博客android 使用html5作布局文件 http://www.cnblogs.com/andgoo/archive/2011/10/11/2207936.html. Android中webview跟JAVASCRIPT中的交互 http://www.oschina.net/question/4873_27156.
package com.dazhuo.ui; import java.util.List; import org.json.JSONArray; import org.json.JSONObject; import com.dazhuo.domain.Person; import com.dazhuo.service.PersonService; import android.app.Activity; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.webkit.WebView; public class MainActivity extends Activity { private PersonService service; private WebView webview; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); service =new PersonService(); webview = (WebView) this.findViewById(R.id.webView);//android内置浏览器对象 webview.getSettings().setJavaScriptEnabled(true);//启用javascript支持 //添加一个js交互接口,方便html布局文件中的javascript代码能与后台java代码直接交互访问 webview.addJavascriptInterface(new PersonPlugin() , "Person");//new类名,交互访问时使用的别名 // <body onload="javascript:Person.getPersonList()"> webview.loadUrl("file:///android_asset/index.html");//加载本地的html布局文件 //其实可以把这个html布局文件放在公网中,这样方便随时更新维护 例如 webview.loadUrl("www.xxxx.com/index.html"); } //定义一个内部类,从java后台(可能是从网络,文件或者sqllite数据库) 获取List集合数据,并转换成json字符串,调用前台js代码 private final class PersonPlugin{ public void getPersonList(){ List<Person> list = service.getPersonList();//获得List数据集合 //将List泛型集合的数据转换为JSON数据格式 try { JSONArray arr =new JSONArray(); for(Person person :list) { JSONObject json =new JSONObject(); json.put("id", person.getId()); json.put("name", person.getName()); json.put("mobile",person.getMobile()); arr.put(json); } String JSONStr =arr.toString();//转换成json字符串 webview.loadUrl("javascript:show('"+ JSONStr +"')");//执行html布局文件中的javascript函数代码-- Log.i("MainActivity", JSONStr); } catch (Exception e) { // TODO: handle exception } } //打电话的方法 public void call(String mobile){ Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"+ mobile)); startActivity(intent); } } }
package com.dazhuo.domain; public class Person { private Integer id; public Integer getId() { return id; } public Person(Integer id, String name, String mobile) { super(); this.id = id; this.name = name; this.mobile = mobile; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getMobile() { return mobile; } public void setMobile(String mobile) { this.mobile = mobile; } private String name; private String mobile; }
package com.dazhuo.service; import java.util.ArrayList; import java.util.List; import com.dazhuo.domain.Person; public class PersonService { public List<Person> getPersonList() { List<Person> list =new ArrayList<Person>(); list.add(new Person(32, "aa", "13675574545")); list.add(new Person(32, "bb", "13698874545")); list.add(new Person(32, "cc", "13644464545")); list.add(new Person(32, "dd", "13908978877")); list.add(new Person(32, "ee", "15908989898")); return list; } }
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript"> function show(jsondata){ var jsonobjs = eval(jsondata); var table = document.getElementById("personTable"); for(var y=0; y<jsonobjs.length; y++){ var tr = table.insertRow(table.rows.length); //添加一行 //添加三列 var td1 = tr.insertCell(0); var td2 = tr.insertCell(1); td2.align = "center"; var td3 = tr.insertCell(2); td3.align = "center"; //设置列内容和属性 td1.innerHTML = jsonobjs[y].id; td2.innerHTML = jsonobjs[y].name; td3.innerHTML = "<a href='javascript:Person.call(\""+ jsonobjs[y].mobile+ "\")'>"+ jsonobjs[y].mobile+ "</a>"; } } </script> </head> <!-- js代码通过webView调用其插件中的java代码 --> <body onload="javascript:Person.getPersonList()"> <table border="0" width="100%" id="personTable" cellspacing="0"> <tr> <td width="20%">编号</td><td width="40%" align="center">姓名</td><td align="center">电话</td> </tr> </table> <a href="javascript:window.location.reload()">刷新</a> </body> /</html>